WO2006091562A1 - Additive for reducing torque on a drill string - Google Patents
Additive for reducing torque on a drill string Download PDFInfo
- Publication number
- WO2006091562A1 WO2006091562A1 PCT/US2006/006030 US2006006030W WO2006091562A1 WO 2006091562 A1 WO2006091562 A1 WO 2006091562A1 US 2006006030 W US2006006030 W US 2006006030W WO 2006091562 A1 WO2006091562 A1 WO 2006091562A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- composition
- fluid
- solid particles
- solid
- barite
- Prior art date
Links
- 239000000654 additive Substances 0.000 title description 9
- 230000000996 additive effect Effects 0.000 title description 5
- 239000012530 fluid Substances 0.000 claims abstract description 159
- 239000002245 particle Substances 0.000 claims abstract description 118
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims abstract description 108
- 239000007787 solid Substances 0.000 claims abstract description 88
- 239000010428 baryte Substances 0.000 claims abstract description 86
- 229910052601 baryte Inorganic materials 0.000 claims abstract description 86
- 229920000642 polymer Polymers 0.000 claims abstract description 67
- 239000000203 mixture Substances 0.000 claims abstract description 48
- 239000002270 dispersing agent Substances 0.000 claims abstract description 46
- 238000005553 drilling Methods 0.000 claims abstract description 38
- 238000000034 method Methods 0.000 claims abstract description 34
- 239000011343 solid material Substances 0.000 claims abstract description 32
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 22
- 239000000463 material Substances 0.000 claims abstract description 20
- UBXAKNTVXQMEAG-UHFFFAOYSA-L strontium sulfate Chemical compound [Sr+2].[O-]S([O-])(=O)=O UBXAKNTVXQMEAG-UHFFFAOYSA-L 0.000 claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 15
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 11
- 239000011019 hematite Substances 0.000 claims abstract description 10
- 229910052595 hematite Inorganic materials 0.000 claims abstract description 10
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000010459 dolomite Substances 0.000 claims abstract description 9
- 229910000514 dolomite Inorganic materials 0.000 claims abstract description 9
- YDZQQRWRVYGNER-UHFFFAOYSA-N iron;titanium;trihydrate Chemical compound O.O.O.[Ti].[Fe] YDZQQRWRVYGNER-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000010450 olivine Substances 0.000 claims abstract description 9
- 229910052609 olivine Inorganic materials 0.000 claims abstract description 9
- 229910021646 siderite Inorganic materials 0.000 claims abstract description 9
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 9
- 239000003921 oil Substances 0.000 claims description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 23
- 230000001050 lubricating effect Effects 0.000 claims description 20
- -1 fatty acid carboxylic acids Chemical class 0.000 claims description 12
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 8
- 239000000194 fatty acid Substances 0.000 claims description 8
- 229930195729 fatty acid Natural products 0.000 claims description 8
- 239000002283 diesel fuel Substances 0.000 claims description 7
- 150000002148 esters Chemical class 0.000 claims description 7
- 229920006395 saturated elastomer Polymers 0.000 claims description 7
- HPALAKNZSZLMCH-UHFFFAOYSA-M sodium;chloride;hydrate Chemical compound O.[Na+].[Cl-] HPALAKNZSZLMCH-UHFFFAOYSA-M 0.000 claims description 7
- 239000012267 brine Substances 0.000 claims description 6
- 239000002480 mineral oil Substances 0.000 claims description 6
- 235000010446 mineral oil Nutrition 0.000 claims description 6
- 229920013639 polyalphaolefin Polymers 0.000 claims description 5
- 238000000227 grinding Methods 0.000 abstract description 19
- 230000008569 process Effects 0.000 abstract description 17
- 239000011236 particulate material Substances 0.000 abstract description 6
- 239000003795 chemical substances by application Substances 0.000 description 32
- 239000000314 lubricant Substances 0.000 description 15
- 238000000518 rheometry Methods 0.000 description 12
- 239000002002 slurry Substances 0.000 description 12
- 238000007792 addition Methods 0.000 description 11
- 239000004033 plastic Substances 0.000 description 11
- 229920003023 plastic Polymers 0.000 description 11
- 238000012360 testing method Methods 0.000 description 11
- 239000000178 monomer Substances 0.000 description 10
- 239000002253 acid Substances 0.000 description 9
- 238000009472 formulation Methods 0.000 description 9
- 239000000047 product Substances 0.000 description 9
- 150000003839 salts Chemical class 0.000 description 7
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 description 6
- 239000000356 contaminant Substances 0.000 description 6
- 229920001577 copolymer Polymers 0.000 description 6
- 238000009826 distribution Methods 0.000 description 6
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- OHBKNWDVVSUTRV-UHFFFAOYSA-N 1-(prop-2-enoylamino)propane-2-sulfonic acid Chemical compound OS(=O)(=O)C(C)CNC(=O)C=C OHBKNWDVVSUTRV-UHFFFAOYSA-N 0.000 description 5
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 5
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 5
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 5
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 5
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 5
- XTXRWKRVRITETP-UHFFFAOYSA-N Vinyl acetate Chemical compound CC(=O)OC=C XTXRWKRVRITETP-UHFFFAOYSA-N 0.000 description 5
- 230000032683 aging Effects 0.000 description 5
- 239000011324 bead Substances 0.000 description 5
- IZRICFNDFRWBBG-UHFFFAOYSA-N ethenesulfonic acid;3-hydroxypropyl prop-2-enoate Chemical compound OS(=O)(=O)C=C.OCCCOC(=O)C=C IZRICFNDFRWBBG-UHFFFAOYSA-N 0.000 description 5
- 229920001519 homopolymer Polymers 0.000 description 5
- XJRBAMWJDBPFIM-UHFFFAOYSA-N methyl vinyl ether Chemical compound COC=C XJRBAMWJDBPFIM-UHFFFAOYSA-N 0.000 description 5
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 5
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000001914 filtration Methods 0.000 description 4
- 239000010419 fine particle Substances 0.000 description 4
- 238000005755 formation reaction Methods 0.000 description 4
- 229910052500 inorganic mineral Inorganic materials 0.000 description 4
- 239000007788 liquid Substances 0.000 description 4
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 4
- 239000011976 maleic acid Substances 0.000 description 4
- FPYJFEHAWHCUMM-UHFFFAOYSA-N maleic anhydride Chemical compound O=C1OC(=O)C=C1 FPYJFEHAWHCUMM-UHFFFAOYSA-N 0.000 description 4
- 239000011707 mineral Substances 0.000 description 4
- 235000010755 mineral Nutrition 0.000 description 4
- 238000012552 review Methods 0.000 description 4
- 238000000926 separation method Methods 0.000 description 4
- 230000003068 static effect Effects 0.000 description 4
- 239000000725 suspension Substances 0.000 description 4
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 description 3
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 3
- 150000007513 acids Chemical class 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 238000005098 hot rolling Methods 0.000 description 3
- 239000001103 potassium chloride Substances 0.000 description 3
- 235000011164 potassium chloride Nutrition 0.000 description 3
- 230000001988 toxicity Effects 0.000 description 3
- 231100000419 toxicity Toxicity 0.000 description 3
- MYRTYDVEIRVNKP-UHFFFAOYSA-N 1,2-Divinylbenzene Chemical compound C=CC1=CC=CC=C1C=C MYRTYDVEIRVNKP-UHFFFAOYSA-N 0.000 description 2
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 235000011941 Tilia x europaea Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000012736 aqueous medium Substances 0.000 description 2
- 239000000440 bentonite Substances 0.000 description 2
- 229910000278 bentonite Inorganic materials 0.000 description 2
- 239000004927 clay Substances 0.000 description 2
- 238000011109 contamination Methods 0.000 description 2
- 238000005520 cutting process Methods 0.000 description 2
- 230000009977 dual effect Effects 0.000 description 2
- 230000007613 environmental effect Effects 0.000 description 2
- 150000004665 fatty acids Chemical class 0.000 description 2
- 239000003349 gelling agent Substances 0.000 description 2
- 239000010439 graphite Substances 0.000 description 2
- 229910002804 graphite Inorganic materials 0.000 description 2
- 230000005764 inhibitory process Effects 0.000 description 2
- 239000004571 lime Substances 0.000 description 2
- 230000007774 longterm Effects 0.000 description 2
- 239000010687 lubricating oil Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 238000003801 milling Methods 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 239000006174 pH buffer Substances 0.000 description 2
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- 239000000230 xanthan gum Substances 0.000 description 2
- 229920001285 xanthan gum Polymers 0.000 description 2
- 229940082509 xanthan gum Drugs 0.000 description 2
- 235000010493 xanthan gum Nutrition 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- IIZPXYDJLKNOIY-JXPKJXOSSA-N 1-palmitoyl-2-arachidonoyl-sn-glycero-3-phosphocholine Chemical compound CCCCCCCCCCCCCCCC(=O)OC[C@H](COP([O-])(=O)OCC[N+](C)(C)C)OC(=O)CCC\C=C/C\C=C/C\C=C/C\C=C/CCCCC IIZPXYDJLKNOIY-JXPKJXOSSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- 241000609240 Ambelania acida Species 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 208000037063 Thinness Diseases 0.000 description 1
- 150000001335 aliphatic alkanes Chemical class 0.000 description 1
- 229910052784 alkaline earth metal Inorganic materials 0.000 description 1
- 150000004996 alkyl benzenes Chemical class 0.000 description 1
- 150000008064 anhydrides Chemical class 0.000 description 1
- 239000007900 aqueous suspension Substances 0.000 description 1
- 239000010905 bagasse Substances 0.000 description 1
- 239000010427 ball clay Substances 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 150000007942 carboxylates Chemical class 0.000 description 1
- 150000001735 carboxylic acids Chemical class 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000004581 coalescence Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 229920001688 coating polymer Polymers 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 239000010696 ester oil Substances 0.000 description 1
- 239000012467 final product Substances 0.000 description 1
- 230000006870 function Effects 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000003112 inhibitor Substances 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 230000007794 irritation Effects 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000000787 lecithin Substances 0.000 description 1
- 229940067606 lecithin Drugs 0.000 description 1
- 235000010445 lecithin Nutrition 0.000 description 1
- 238000011068 loading method Methods 0.000 description 1
- 239000006249 magnetic particle Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 239000012188 paraffin wax Substances 0.000 description 1
- 239000003415 peat Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 150000003904 phospholipids Chemical class 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000003908 quality control method Methods 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000000344 soap Substances 0.000 description 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 1
- 159000000000 sodium salts Chemical class 0.000 description 1
- 239000003381 stabilizer Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-N sulfonic acid Chemical compound OS(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-N 0.000 description 1
- 239000004094 surface-active agent Substances 0.000 description 1
- 229920001059 synthetic polymer Polymers 0.000 description 1
- 206010048828 underweight Diseases 0.000 description 1
- 238000005303 weighing Methods 0.000 description 1
- 238000001238 wet grinding Methods 0.000 description 1
- 239000004711 α-olefin Substances 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/02—Well-drilling compositions
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M171/00—Lubricating compositions characterised by purely physical criteria, e.g. containing as base-material, thickener or additive, ingredients which are characterised exclusively by their numerically specified physical properties, i.e. containing ingredients which are physically well-defined but for which the chemical nature is either unspecified or only very vaguely indicated
- C10M171/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M173/00—Lubricating compositions containing more than 10% water
- C10M173/02—Lubricating compositions containing more than 10% water not containing mineral or fatty oils
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/06—Metal compounds
- C10M2201/062—Oxides; Hydroxides; Carbonates or bicarbonates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/08—Inorganic acids or salts thereof
- C10M2201/084—Inorganic acids or salts thereof containing sulfur, selenium or tellurium
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2201/00—Inorganic compounds or elements as ingredients in lubricant compositions
- C10M2201/10—Compounds containing silicon
- C10M2201/102—Silicates
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10M—LUBRICATING COMPOSITIONS; USE OF CHEMICAL SUBSTANCES EITHER ALONE OR AS LUBRICATING INGREDIENTS IN A LUBRICATING COMPOSITION
- C10M2209/00—Organic macromolecular compounds containing oxygen as ingredients in lubricant compositions
- C10M2209/02—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
- C10M2209/08—Macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds containing monomers having an unsaturated radical bound to a carboxyl radical, e.g. acrylate type
- C10M2209/084—Acrylate; Methacrylate
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/04—Groups 2 or 12
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/14—Group 7
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2010/00—Metal present as such or in compounds
- C10N2010/16—Groups 8, 9, or 10
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2020/00—Specified physical or chemical properties or characteristics, i.e. function, of component of lubricating compositions
- C10N2020/01—Physico-chemical properties
- C10N2020/055—Particles related characteristics
- C10N2020/06—Particles of special shape or size
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2030/00—Specified physical or chemical properties which is improved by the additive characterising the lubricating composition, e.g. multifunctional additives
- C10N2030/06—Oiliness; Film-strength; Anti-wear; Resistance to extreme pressure
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2040/00—Specified use or application for which the lubricating composition is intended
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10N—INDEXING SCHEME ASSOCIATED WITH SUBCLASS C10M RELATING TO LUBRICATING COMPOSITIONS
- C10N2050/00—Form in which the lubricant is applied to the material being lubricated
- C10N2050/015—Dispersions of solid lubricants
Definitions
- drilling fluid formulations with a multitude of properties, including lubricity, are pumped down the well through the drill string and out through nozzles in the drill bit, so that the drilling fluid circulates upward through the annular space between the rotating drill string and the rock formation.
- the functions of these drilling fluids or "muds" are to cool and lubricate the bit and drill string, to carry the cuttings from the drilling process to the surface, to control and reduce fluid loss into the rock formations, and to support and protect the bore hole until the metal casing can be cemented in place (i.e., create a stable hole).
- Mud lubricity to achieve minimum torque and drag
- mud toxicity for wells in environmentally sensitive areas, such as offshore drilling
- Most drilling fluids may be grouped into two major categories: water-based or oleaginous-based.
- the majority of drilling fluids used today are water-based, i.e., they contain water as the continuous external phase.
- oleaginous-based drilling fluids including the so-called synthetic-based fluids do have performance advantages, drawbacks are higher costs and difficult environmental compliance in specific areas of the world.
- the lubricity of a drilling fluid is an important factor in the economics of well drilling and is measured by determining the effect of the fluid upon the coefficient of friction between a moving part, such as the drill string, and a surface in contact with the moving part. The lower the coefficient of friction, the greater the lubricity.
- the lubricity of a drilling fluid determines the fluid's ability to lower torque and drag forces during the drilling operation.
- micrometer-sized solid particles or beads may also be added to water-based drilling fluids to increase their lubricity.
- Some representative examples of this type of lubricant system are: (1) Abrasion- and fracture-resistant, thermally stable and chemically inert ceramic spheres; (2) Plastic beads, for example, those made from a copolymer of divinyl benzene and styrene; (3) Plastic-coated magnetic particles in bead form, to facilitate the removal and recycling of these bead compositions; (4) Chemically-resistant, lime-silica glass beads; (5) Resilient graphitic carbon particles; (6) Cellulose, peat or bagasse, containing absorbed oil-based liquid lubricants; (7) Mixtures of graphite, silicate and silicone materials.
- the present invention is generally directed to fluids useful in reducing the torque of drill string, as well as methods for making and methods of using such fluids.
- the fluids of the present invention include a polymer coated colloidal solid material that has been coated with a polymer added during the cominution (i.e. grinding) process for preparing the polymer coated colloidal solid material.
- One illustrative embodiment of the present invention includes a method of reducing the torque in a rotating drill string component.
- the method includes, injecting into the drilling fluid a composition including a base fluid, and a polymer coated colloidal solid material.
- the polymer coated colloidal solid material includes: a solid particle coated with a polymeric dispersing agent absorbed to the surface of the solid particle.
- the polymeric dispersing agent is absorbed to the surface of the solid particle during the cominution (i.e. grinding) process utilized to make the polymer coated colloidal solid material.
- the base fluid utilized in the above illustrative embodiment can be an aqueous fluid or an oleaginous fluid and preferably is selected from: water, brine, diesel oil, mineral oil, white oil, n-alkanes, synthetic oils, saturated and unsaturated poly(alpha-olef ⁇ ns), esters of fatty acid carboxylic acids and combinations and mixtures of these and similar fluids that should be apparent to one of skill in the art.
- Suitable and illustrative colloidal solids are selected such that the solid particles are composed of a material of specific gravity of at least 2.68 and preferably are selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate, combinations and mixtures of these and other suitable materials that should be well known to one of skill in the art.
- the polymer coated colloidal solid material has a weight average particle diameter (d 50 ) less than ten microns.
- Another preferred and illustrative embodiment is such that at least 50% of the solid particles have a diameter less than 2 microns and more preferably at least 80% of the solid particles have a diameter less than 5 microns.
- the particle diameter distribution in one illustratvie embodiment is such that greater than 25% of the solid particles have a diameter of less than 2 microns and more preferably greater than 50% of the solid particle have a diameter of less than 2 microns.
- the polymeric dispersing agent utilized in one illustrative and preferred embodiment is a polymer of molecular weight of at least 2,000 Daltons.
- the polymeric dispersing agent is a water soluble polymer is a homopolymer or copolymer of monomers selected from the group comprising: acrylic acid, itaconic acid, maleic acid or anhydride, hydroxypropyl acrylate vinylsulphonic acid, acrylamido 2-propane sulphonic acid, acrylamide, styrene sulphonic acid, acrylic phosphate esters, methyl vinyl ether and vinyl acetate, and wherein the acid monomers may also be neutralized to a salt.
- the present invention is also directed to a lubricating composition that includes a base fluid and a polymer coated colloidal solid material .
- the polymer coated colloidal solid material is formulated so as to include a solid particle coated with a polymeric dispersing agent absorbed to the surface of the colloidal solid particle.
- a new and novel aspect of the present invention is the dual role that the colloidal particles play in the drilling fluid. That is to say, the polymer coated colloidal particles may serve both as a weighting agent and lubricating agent.
- This dualistic view of the material is novel to the drilling industry because previously the functionality of weighing agent and lubricating agent were distinct.
- the solid lubricating agents noted above generally have a density less than conventionally used weighting agents.
- mineral derived graphite has a specific gravity of about 2.09 to 2.25.
- conventional weighting agents such as barite has a specific gravity of about 4.50
- hematite has a specific gravity of about 5.3.
- the lubricating / weighting agent of the present invention is formed of particles that are composed of a material of specific gravity of at least 2.68. In this way the particles can serve as a combination lubricating agent and weighting agent.
- weighting agents such as powdered barium sulfate (“barite”)
- barite powdered barium sulfate
- d 50 average particle diameter
- properties of conventional weighting agents, and barite in particular are subject to strict quality control parameters established by the American Petroleum Institute (API).
- API American Petroleum Institute
- a gellant or viscosifier such as bentonite for water based fluids, or organically modified bentonite for oil based fluids.
- Polymeric viscosifiers such as xanthan gum are typically added to slow the rate of the sedimentation of the conventional weighting agent. It is therefore very surprising that the products of this invention, which comprise solid colloidal particles that are coated with a polymeric defloculating agent or dispersing agent, provide fluids that contain high density solids that also reduce the torque in the rotating portions of the drill string without increasing sedimentation or sag.
- the additives of this invention comprise dispersed solid colloidal particles that are coated with a polymeric defloculating agent or dispersing agent.
- the fine particle size will generate suspensions or slurries that will show a reduced tendency to sediment or sag, whilst the polymeric dispersing agent on the surface of the particle control the inter-particle interactions. It is the combination of fine particle size and control of colloidal interactions that reconciles the two objectives of high density and increased lubricity.
- the polymeric dispersant is coated onto the surface of the particulate weighting during the grinding process utilized to form the colloidal particle. It is believed that during the course of the grinding process, newly exposed particle surfaces become polymer coated thus resulting in the properties exhibited by the colloidal solids of the present invention.
- Experimental data has shown that colloidal solid material created in the absence of the polymeric dispersant results in a concentrated slurry of small particles that is an unpumpable paste or gel.
- a polymeric dispersant is added during the grinding process. It is believed that this difference provides an advantageous improvement in the state of dispersion of the particles compared to post addition of the polymeric dispersant to fine particles.
- the polymeric dispersant is chosen so as it provides the suitable colloidal inter-particle interaction mechanism to make it tolerant to a range of common well bore contaminants, including salt saturated.
- a method of grinding a solid material to obtain the solid colloidal particle so of the present invention is well known for example from British Patent Specification No 1,472,701 or No 1,599,632.
- the mineral in an aqueous suspension is mixed with a polymeric dispersing agent and then ground within an agitated fluidized bed of a particulate grinding medium for a time sufficient to provide the required particle size distribution.
- An important preferred embodiment aspect of the present invention is the presence of the dispersing agent in the step of "wet" grinding the mineral. This prevents new crystal surfaces formed during the grinding step from forming agglomerates which are not so readily broken down if they are subsequently treated with a dispersing agent.
- a preferred embodiment of this invention is for the weight average particle diameter (d 50 ) of the colloidal solid particles to be less than ten microns.
- Another preferred and illustrative embodiment is such that at least 50% of the solid particles have a diameter less than 2 microns and more preferably at least 80% of the solid particles have a diameter less than 2 microns.
- the particle diameter distribution in one illustrative embodiment is such that greater than 25% of the solid particles have a diameter of less than 2 microns and more preferably greater than 50% of the solid particle have a diameter of less than 2 microns. This will enhance the suspension's characteristics in terms of sedimentation or sag stability without the viscosity of the fluid increasing so as to make it unpumpable.
- the polymer coated colloidal particles according the invention may be provided as a concentrated slurry either in an aqueous medium or an oleaginous liquid.
- the oleaginous liquid should have a kinematic viscosity of less than 10 centistokes (10 mm 2 /s) at 40 °C and, for safety reasons, a flash point of greater than 60 0 C.
- Suitable oleaginous liquids are for example diesel oil, mineral or white oils, n-alkanes or synthetic oils such as alpha-olefm oils, ester oils or poly(alpha-olefins).
- the dispersing agent may be, for example, a water-soluble polymer of molecular weight of at least 2,000 Daltons.
- the polymer is a homopolymer or copolymer of any monomers selected from (but not limited to) the class comprising: acrylic acid, itaconic acid, maleic acid or anhydride, hydroxypropyl acrylate vinylsulphonic acid, acrylamido 2-propane sulphonic acid, acrylamide, styrene sulphonic acid, acrylic phosphate esters, methyl vinyl ether and vinyl acetate.
- the acid monomers may also be neutralized to a salt such as the sodium salt.
- intermediate molecular weight polymers in the range 10,000 to 200,000 for example
- Intermediate molecular weight dispersing agents are advantageously less sensitive to contaminants such as salt, clays, and therefore are well adapted to well bore fluids.
- the dispersing agent may be selected for example among carboxylic acids of molecular weight of at least 150 such as oleic acid and polybasic fatty acids, alkylbenzene sulphonic acids, alkane sulphonic acids, linear alpha-olefin sulphonic acid or the alkaline earth metal salts of any of the above acids, phospholipids such as lecithin, synthetic polymers such as Hypermer OM-I (trademark of ICI).
- carboxylic acids of molecular weight of at least 150 such as oleic acid and polybasic fatty acids, alkylbenzene sulphonic acids, alkane sulphonic acids, linear alpha-olefin sulphonic acid or the alkaline earth metal salts of any of the above acids, phospholipids such as lecithin, synthetic polymers such as Hypermer OM-I (trademark of ICI).
- the formation of the colloidal solid material by a high energy wet process in which API Barite of median particle size of 25-30 micron is reduced to a median particle size of less than 2 microns, is more efficient when the milling is done at high density, normally greater than 2.1 sg, preferably at 2.5sg.
- the volume or mass fraction of barite is very high.
- a specific gravity of 2.5 a lOOkgs of the final product contains about 78kgs is barite.
- the resulting slurry still remains fluid.
- the presence of the surface active polymer during the course of the cominution process is an important factor in achieving the results of the present invention.
- the surface active polymer is designed to adsorb onto surface sites of the barite particles.
- the polymer In the grinder, where there is a very high mass fraction of barite, the polymer easily finds it way onto the newly formed particle surfaces. Once the polymer 'finds' the barite - and in the environment of the grinder it has every chance to do so — a combination of the extremely high energy environment in the wet grinding mill (which can reach 85 to 90 C inside the mill), effectively ensures that the polymer is 'wrapped' around the colloidal size barite. As a result of this process it is speculated that no polymer 'loops' or 'tails' are hanging off the barite to get attached, snagged, or tangled up with adjacent particles. Thus it is speculated that the high energy and shear of the grinding process ensures the polymer remains on the barite permanently and thus the polymer doesn't desorb, or become detached.
- ground barite a standard grade of API barite, having a weight average particle diameter (D 50 ) of about 20 microns ; a untreated barite (M) having an average size of 3 -5 microns made by milling/grinding barite while in the dry state and in the absence of a dispersant, with and colloidal barite according the present invention with a polymeric dispersant included during a "wet" grinding process.
- D 50 weight average particle diameter
- M untreated barite
- M having an average size of 3 -5 microns made by milling/grinding barite while in the dry state and in the absence of a dispersant
- colloidal barite according the present invention with a polymeric dispersant included during a "wet" grinding process.
- FIG 1 A representative sample of particle size distributions are shown figure 1.
- the colloidal barite particles of the present invention have a particle size distribution that is very different from that of API barite. Specifically one should be able to determine that greater than about 90% (by volume) of the colloidal barite of the present invention has a particle diameter less than about 5 microns, hi contrast, less than 15 percent by volume of the particles in API specification barite have a particle diameter less than 5 microns.
- the polymeric dispersant is IDSPERSETM XT an anionic acrylic ter-polymer of molecular weight in the range 40,000-120,000 with carboxylate and other functional groups commercially available from M-I LLC. Houston, Texas. This preferred polymer is advantageously stable at temperature up to 200 °C, tolerant to a broad range of contaminant, gives good filtration properties and do not readily desorb off the particle surface.
- Example 1 illustrate the dual use of the lubricating agent as both weighting agent and as a lubricating agent, (i.e. reducing torque)
- Example 1 illustrate the dual use of the lubricating agent as both weighting agent and as a lubricating agent, (i.e. reducing torque)
- Fluid #3 exhibits an excellent, low, plastic viscosity.
- the presence of the dispersing polymer controls the inter-particle interactions, so making fluid #3 pumpable and not a gel. Also the much lower average particle size has stabilized the flow regime and is now laminar at 1000 s "1 demonstrated by the low plastic viscosity and positive yield point.
- Example 2
- a factor of 0.50 indicates zero solids separation and a no density variation throughout the fluid sample.
- a sag factor greater than 0.52 is normally considered unacceptable solids separation.
- two 13.0 ppg fluid formulations are compared, one weighted with conventional API barite and the second weighted with polymer coated colloidal barite (PCC barite) made in accordance with the teachings of the present invention, as a 2.2sg liquid slurry.
- PCC barite polymer coated colloidal barite
- Other additives in the formulation are included to provide additional control of pH, fluid loss, rheology, inhibition to reactive shale and claystones. These additives are available from M-I Drilling Fluids.
- the fluids were heat aged statically for 48 hrs at 104 0 F with the following exemplary results.
- Fluid A formulated with the polymer coated colloidal barite, had no solids separation with a sag factor of zero with a rheological profile much lower than a fluid weighted with conventional API barite.
- Fluid A was formulated with the polymer coated colloidal barite of this invention.
- Fluid B was formulated with conventional API barite.
- Fluid C was formulated with a commercial grade of non coated colloidal barite, of median particle size of 1.6 microns available from Highwood Resources Ltd., Canada. Post grinding addition of the coating polymer of the invention are included in the formulation of Fluids B and C to maintain the fluid in a deflocculated condition.
- Samples of fluid A, B and C were purposely contaminated with bentonite to simulate the inclusion of naturally drilled solids in the formulation.
- the samples were heat aged dynamically at 150 0 F for 16 hrs. Exemplary and representative results after aging are shown below.
- the fluids were heat aged dynamically for 16 hrs at 15O 0 F.
- the following table presented exemplary results.
- VST Viscometer Sag Test
- ECF-614 additive is an organophilic clay additive available from M-I Drilling Fluids.
- the fluid was heat aged statically for 4 days at 35O 0 F.
- the following table provides exemplary results.
- OCMA Ocma clay, a fine particle ball clay commonly used to replicate drilled solids contamination acquired from shale sediments during drilling
- the weighting agents comprised a blend of 35% w/w new barite lubricating / weighting agent with 65% w/w API grade barite (Fluid #1) weighting agent and 100% API grade barite (fluid #2), both with 11.5 pound per barrel [32.8 kg/m 3 ] STAPLEX 500 (mark of Schlumberger, shale stabilizer), 2 pound per barrel [5.7 kg/m 3 ] IDCAP (mark of Schlumberger, shale inhibitor), and 3.5 pound per barrel [10 kg/m 3 ] potassium chloride.
- the other additives provide inhibition to the drilling fluid, but here demonstrate the capacity of the new formulation to cope with any subsequent polymer additions.
- the fluid was hot rolled to 200 ° F (93.3 0 C). Results are provided in table VIII. Table VIII
- Fluid #15 is based on synthetic oil (Ultidrill, Mark of Schlumberger, a linear alpha-olefm having 14 to 16 carbon atoms).
- Fluid #16 is a water-based mud and includes a viscosifier (0.5 ppb IDVIS, Mark of Schlumberger, a pure xanthan gum polymer) and a fluid loss control agent (6.6 ppb IDFLO Mark of Schlumberger). Fluid #15 was hot rolled at 200 0 F (93.3 0 C), fluid #16 at 250 °F (121.1 0 C). After hot rolling results are shown table IX. Table IX
- the lubricating / weighting agent is composed of the new colloidal barite according to the present invention with 50 pound per barrel [142.65 kg/m 3 ] standard API grade, calcium carbonate, which acts as bridging solids.
- the 18.6ppg [2.23 g/cm 3 ] fluid was formulated with 2 pound per barrel [5.7 kg/m 3 ] PTS 200 (mark of Schlumberger, pH buffer)
- the static aging tests were carried out at 400 0 F (204.4 0 C) for 72 hours.
- the results shown in the table below, before (BSA) and after (ASA) static aging reveal good stability to sedimentation and rheological profile.
- *free water is the volume of clear water that appears on top of the fluid. The remainder of the fluid has uniform density.
- the lubricating / weighting agent is composed of the new colloidal barite according to the present invention.
- the 16ppg [1.91 g/cm 3 ] fluid was formulated with caustic soda to adjust the pH to the required level, with the subsequent fluid rheology and API filtration tested.
- the results shown in the table below reveal good stability to pH variation and rheological profile.
- the lubricating / weighting agent is composed of the new colloidal barite according to the present invention, with 10 pounds per barrel [28.53 kg/m 3 ] CALOTEMP (mark of Schlumberger, fluid loss additive) and 1 pound per barrel [2.85 kg/m 3 ] PTS 200 (mark of Schlumberger, pH buffer).
- the 17p ⁇ g [2.04 g/m 3 ] and 18p ⁇ g [2.16 g/cm 3 ] fluids were static aged for 72 hours at 25O 0 F (121 0 C). The results shown in the table below reveal good stability to sedimentation and low rheological profile with the subsequent filtration tested.
- the fluid exhibited the following properties:
- the section was drilled with a mud weight of 13.2 lb/gal and an oil: water ratio of between 72:28 and 84:16. Water activity varied between 0.89 and 0.82 with the electrical stability controlled between 675 and 706 Volts. The observations were: no sag or settlement or change in the mud weight occurred; an aggressive (i.e. finer screen) solids separation program could be used; no differential sticking with 2,321 psi overbalance pressure in the lower part of the reservoir. The fluid system reduced the torque in the open hole by about 28% when compared to the offsets drilled with convention drilling fluids.
- fluids including the polymer dispersant coated colloidal barite of the present invention reduced the torque required to rotate the drilling string when compared to conventionally formulated fluids.
- one illustrative embodiment of the present invention includes a method of reducing the torque of a drill string utilized to drill subterranean wells.
- the method includes, injecting into the drilling fluid a composition including a base fluid, and a polymer coated colloidal solid material.
- the polymer coated colloidal solid material includes: a solid particle having an weight average particle diameter (d 5 o) of less than ten microns, and a polymeric dispersing agent absorbed to the surface of the solid particle during the course of the cominution process.
- the base fluid utilized in the above illustrative embodiment can be an aqueous fluid or an oleaginous fluid and preferably is selected from: water, brine, diesel oil, mineral oil, white oil, n-alkanes, synthetic oils, saturated and unsaturated poly(alpha-olefms), esters of fatty acid carboxylic acids and combinations and mixtures of these and similar fluids that should be apparent to one of skill in the art.
- Suitable and illustrative colloidal solids are selected such that the solid particles are composed of a material of specific gravity of at least 2.68 and preferably are selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate, combinations and mixtures of these and other suitable materials that should be well known to one of skill in the art.
- the polymer coated colloidal solid material has a weight average particle diameter (dso) less than 2.0 microns.
- Another illustrative embodiment contains at least 60% of the solid particles have a diameter less than 2 microns or alternatively more than 25% of the solid particles have a diameter less than 2 microns.
- the polymeric dispersing agent utilized in one illustrative and preferred embodiment is a polymer of molecular weight of at least 2,000 Daltons.
- the polymeric dispersing agent is a water soluble polymer is a homopolymer or copolymer of monomers selected from the group comprising: acrylic acid, itaconic acid, maleic acid or anhydride, hydroxypropyl acrylate vinylsulphonic acid, acrylamido 2-propane sulphonic acid, acrylamide, styrene sulphonic acid, acrylic phosphate esters, methyl vinyl ether and vinyl acetate, and wherein the acid monomers may also be neutralized to a salt.
- the present invention is also directed to a lubricating composition that includes a base fluid and a polymer coated colloidal solid material .
- the polymer coated colloidal solid material is formulated so as to include a solid particle having an weight average particle diameter (ds 0 ) of less than ten microns; and a polymeric dispersing agent coated onto the surface of the solid particle.
- One illustrative embodiment includes a base fluid that is either an aqueous fluid or an oleaginous fluid and preferably is selected from, water, brine, diesel oil, mineral oil, white oil, n-alkanes, synthetic oils, saturated and unsaturated poly(alpha-olefins), esters of fatty acid carboxylic acids, combinations and mixtures of these and other similar fluids that should be apparent to one of skill in the art.
- a base fluid that is either an aqueous fluid or an oleaginous fluid and preferably is selected from, water, brine, diesel oil, mineral oil, white oil, n-alkanes, synthetic oils, saturated and unsaturated poly(alpha-olefins), esters of fatty acid carboxylic acids, combinations and mixtures of these and other similar fluids that should be apparent to one of skill in the art.
- the solid particles are composed of a material of specific gravity of at least 2.68 and more preferably that the colloidal solid is selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate and combinations and mixtures of these and other similar solids that should be apparent to one of skill in the art.
- the polymer coated colloidal solid material utilized in one illustrative and preferred embodiment has a weight average particle diameter (d 50 ) less than 2.0 microns.
- Another illustrative embodiment contains at least 60% of the solid particles have a diameter less than 2 microns or alternatively more than 25% of the solid particles have a diameter less than 2 microns.
- a polymeric dispersing agent is utilized in a preferred and illustrative embodiment, and is selected such that the polymer preferably has a molecular weight of at least 2,000 Daltons.
- the illustrative polymeric dispersing agent may be a water soluble polymer is a homopolymer or copolymer of monomers selected from the group comprising: acrylic acid, itaconic acid, maleic acid or anhydride, hydroxypropyl acrylate vinylsulphonic acid, acrylamido 2-propane sulphonic acid, acrylamide, styrene sulphonic acid, acrylic phosphate esters, methyl vinyl ether and vinyl acetate, and wherein the acid monomers may also be neutralized to a salt.
- the present invention further includes a method of making the polymer coated colloidal solid material described above.
- Such an illustrative method includes grinding a solid particulate material and a polymeric dispersing agent for a sufficient time to achieve an weight average particle diameter (dso) of less than ten microns; and so that the polymeric dispersing agent is absorbed to the surface of the solid particle.
- the illustrative grinding process is carried out in the presence of a base fluid.
- the base fluid utilized in one illustrative embodiment is either an aqueous fluid or an oleaginous fluid and preferably is selected from, water, brine, diesel oil, mineral oil, white oil, n-alkanes, synthetic oils, saturated and unsaturated poly(alpha-olefins), esters of fatty acid carboxylic acids and combinations thereof.
- the solid particulate material is selected from materials having of specific gravity of at least 2.68 and preferably the solid particulate material is selected from barium sulfate (barite), calcium carbonate, dolomite, ilmenite, hematite, olivine, siderite, strontium sulfate, combinations and mixtures of these and other similar solids that should be apparent to one of skill in the art.
- the method of the present invention involves the grinding the solid in the presence of a polymeric dispersing agent.
- this polymeric dispersing agent is a polymer of molecular weight of at least 2,000 Daltons.
- the polymeric dispersing agent in one preferred and illustrative agent is a water soluble polymer that is a homopolymer or copolymer of monomers selected from the group comprising: acrylic acid, itaconic acid, nialeic acid or anhydride, hydroxypropyl acrylate vinylsulphonic acid, acrylamido 2-propane sulphonic acid, acrylamide, styrene sulphonic acid, acrylic phosphate esters, methyl vinyl ether and vinyl acetate, and wherein the acid monomers may also be neutralised to a salt.
- the product of the above illustrative process is considered part of the present invention.
- one such preferred embodiment includes the product of the above illustrative process in which the polymer coated colloidal solid material has a weight average particle diameter (d 50 ) less than 2.0 microns.
- Another illustrative embodiment contains at least 60% of the solid particles have a diameter less than 2 microns or alternatively more than 25% of the solid particles have a diameter less than 2 microns.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
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CA2598123A CA2598123C (en) | 2005-02-22 | 2006-02-22 | Additive for reducing torque on a drill string |
MX2007010236A MX2007010236A (en) | 2005-02-22 | 2006-02-22 | Additive for reducing torque on a drill string. |
BRPI0607902-4A BRPI0607902A2 (en) | 2005-02-22 | 2006-02-22 | lubricant composition and method of reducing torque on a rotary drill string component |
EP06735616A EP1853685A4 (en) | 2005-02-22 | 2006-02-22 | Additive for reducing torque on a drill string |
US11/816,304 US20080167203A1 (en) | 2005-02-22 | 2006-02-22 | Additive For Reducing Torque On A Drill String |
CN2006800054062A CN101124307B (en) | 2005-02-22 | 2006-02-22 | Additive for reducing torque on a drill string |
EA200701078A EA011177B1 (en) | 2005-02-22 | 2006-02-22 | Additive for reducing torque on a drill string |
NO20074059A NO20074059L (en) | 2005-02-22 | 2007-08-07 | Additive to reduce the torque of a drill string |
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US65528805P | 2005-02-22 | 2005-02-22 | |
US60/655,288 | 2005-02-22 |
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US (1) | US20080167203A1 (en) |
EP (1) | EP1853685A4 (en) |
CN (1) | CN101124307B (en) |
BR (1) | BRPI0607902A2 (en) |
CA (1) | CA2598123C (en) |
EA (1) | EA011177B1 (en) |
MX (1) | MX2007010236A (en) |
NO (1) | NO20074059L (en) |
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EP1944348A1 (en) * | 2007-01-12 | 2008-07-16 | M-I Llc | Wellbore fluids for casing drilling |
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US20090186781A1 (en) * | 2008-01-17 | 2009-07-23 | Hallibruton Energy Services, Inc., A Delaware Corporation | Drilling fluids comprising sub-micron precipitated barite as a component of the weighting agent and associated methods |
US8252729B2 (en) | 2008-01-17 | 2012-08-28 | Halliburton Energy Services Inc. | High performance drilling fluids with submicron-size particles as the weighting agent |
US8324136B1 (en) * | 2010-01-06 | 2012-12-04 | Grinding & Sizing Company LLC | Synergistic bead lubricant and methods for providing improved lubrication to drilling fluids for horizontal drilling |
US8623790B2 (en) * | 2010-12-21 | 2014-01-07 | Newpark Drilling Fluids Llc | Method of drilling a subterranean well with crosslinked polyacrylic acid |
US9410065B2 (en) | 2013-01-29 | 2016-08-09 | Halliburton Energy Services, Inc. | Precipitated particles and wellbore fluids and methods relating thereto |
US9777207B2 (en) | 2013-01-29 | 2017-10-03 | Halliburton Energy Services, Inc. | Wellbore fluids comprising mineral particles and methods relating thereto |
US10407988B2 (en) | 2013-01-29 | 2019-09-10 | Halliburton Energy Services, Inc. | Wellbore fluids comprising mineral particles and methods relating thereto |
CN103396770B (en) * | 2013-07-16 | 2015-08-19 | 蔡修枝 | A kind of multifunctional drilling fluid additive |
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US7267291B2 (en) * | 1996-07-24 | 2007-09-11 | M-I Llc | Additive for increasing the density of an oil-based fluid and fluid comprising such additive |
GB2315505B (en) * | 1996-07-24 | 1998-07-22 | Sofitech Nv | An additive for increasing the density of a fluid and fluid comprising such additve |
US20030203822A1 (en) * | 1996-07-24 | 2003-10-30 | Bradbury Andrew J. | Additive for increasing the density of a fluid for casing annulus pressure control |
CN1132917C (en) * | 2001-01-05 | 2003-12-31 | 中国石油化工股份有限公司 | Additive for lubricant oil |
-
2006
- 2006-02-22 EA EA200701078A patent/EA011177B1/en not_active IP Right Cessation
- 2006-02-22 CA CA2598123A patent/CA2598123C/en not_active Expired - Fee Related
- 2006-02-22 EP EP06735616A patent/EP1853685A4/en not_active Withdrawn
- 2006-02-22 US US11/816,304 patent/US20080167203A1/en not_active Abandoned
- 2006-02-22 MX MX2007010236A patent/MX2007010236A/en unknown
- 2006-02-22 BR BRPI0607902-4A patent/BRPI0607902A2/en not_active Application Discontinuation
- 2006-02-22 WO PCT/US2006/006030 patent/WO2006091562A1/en active Application Filing
- 2006-02-22 CN CN2006800054062A patent/CN101124307B/en not_active Expired - Fee Related
-
2007
- 2007-08-07 NO NO20074059A patent/NO20074059L/en not_active Application Discontinuation
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
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US5314031A (en) * | 1992-10-22 | 1994-05-24 | Shell Oil Company | Directional drilling plug |
US5325922A (en) * | 1992-10-22 | 1994-07-05 | Shell Oil Company | Restoring lost circulation |
US5826669A (en) * | 1995-12-15 | 1998-10-27 | Superior Graphite Co. | Drilling fluid loss prevention and lubrication additive |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1944348A1 (en) * | 2007-01-12 | 2008-07-16 | M-I Llc | Wellbore fluids for casing drilling |
Also Published As
Publication number | Publication date |
---|---|
US20080167203A1 (en) | 2008-07-10 |
EA011177B1 (en) | 2009-02-27 |
EP1853685A4 (en) | 2011-11-30 |
CN101124307A (en) | 2008-02-13 |
WO2006091562A8 (en) | 2007-11-01 |
MX2007010236A (en) | 2007-11-06 |
BRPI0607902A2 (en) | 2009-10-20 |
EA200701078A1 (en) | 2007-10-26 |
CA2598123A1 (en) | 2006-08-31 |
CN101124307B (en) | 2011-04-20 |
CA2598123C (en) | 2013-11-12 |
EP1853685A1 (en) | 2007-11-14 |
NO20074059L (en) | 2007-11-19 |
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