CA2231734A1 - Improved oil-based drilling fluid - Google Patents

Improved oil-based drilling fluid

Info

Publication number
CA2231734A1
CA2231734A1 CA002231734A CA2231734A CA2231734A1 CA 2231734 A1 CA2231734 A1 CA 2231734A1 CA 002231734 A CA002231734 A CA 002231734A CA 2231734 A CA2231734 A CA 2231734A CA 2231734 A1 CA2231734 A1 CA 2231734A1
Authority
CA
Canada
Prior art keywords
drilling fluid
based drilling
improved oil
oleaginous
filter cake
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CA002231734A
Other languages
French (fr)
Other versions
CA2231734C (en
Inventor
Arvind D. Patel
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
MI LLC
Original Assignee
M-I L.L.C.
Arvind D. Patel
M-I Drilling Fluids L.L.C.
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US08/880,266 external-priority patent/US5888944A/en
Application filed by M-I L.L.C., Arvind D. Patel, M-I Drilling Fluids L.L.C. filed Critical M-I L.L.C.
Publication of CA2231734A1 publication Critical patent/CA2231734A1/en
Application granted granted Critical
Publication of CA2231734C publication Critical patent/CA2231734C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH DRILLING; MINING
    • E21B—EARTH DRILLING, e.g. DEEP DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B21/00—Methods or apparatus for flushing boreholes, e.g. by use of exhaust air from motor
    • E21B21/06—Arrangements for treating drilling fluids outside the borehole
    • E21B21/068—Arrangements for treating drilling fluids outside the borehole using chemical treatment
    • 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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • 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
    • C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
    • C09K8/36—Water-in-oil emulsions
    • 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
    • C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
    • 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
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/18—Bridging agents, i.e. particles for temporarily filling the pores of a formation; Graded salts
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S507/00—Earth boring, well treating, and oil field chemistry
    • Y10S507/925—Completion or workover fluid

Abstract

A method of removing the filter cake formed from invert emulsion compositions including an oleaginous, a non-oleaginous and an acid sensitive surfactant to an oil and gas well are disclosed. The acid sensitive surfactant is selected so that the invert emulsion can be broken and residual filter cake solids made water-wet upon the addition of an acidic wash fluid to the well.
CA002231734A 1996-08-02 1997-07-31 Improved oil-based drilling fluid Expired - Fee Related CA2231734C (en)

Applications Claiming Priority (7)

Application Number Priority Date Filing Date Title
US2304396P 1996-08-02 1996-08-02
US60/023,043 1996-08-02
US08/862,201 1997-05-23
US08/862,201 US6218342B1 (en) 1996-08-02 1997-05-23 Oil-based drilling fluid
US08/880,266 US5888944A (en) 1996-08-02 1997-06-23 Oil-based drilling fluid
US08/880,266 1997-06-23
PCT/US1997/013574 WO1998005734A1 (en) 1996-08-02 1997-07-31 Improved oil-based drilling fluid

Publications (2)

Publication Number Publication Date
CA2231734A1 true CA2231734A1 (en) 1998-02-12
CA2231734C CA2231734C (en) 2008-03-11

Family

ID=26696660

Family Applications (2)

Application Number Title Priority Date Filing Date
CA002231734A Expired - Fee Related CA2231734C (en) 1996-08-02 1997-07-31 Improved oil-based drilling fluid
CA002231555A Expired - Fee Related CA2231555C (en) 1996-08-02 1997-07-31 Improved oil-based drilling fluid

Family Applications After (1)

Application Number Title Priority Date Filing Date
CA002231555A Expired - Fee Related CA2231555C (en) 1996-08-02 1997-07-31 Improved oil-based drilling fluid

Country Status (8)

Country Link
US (2) US6218342B1 (en)
EP (2) EP0920484B1 (en)
AT (2) ATE271112T1 (en)
AU (1) AU724271B2 (en)
CA (2) CA2231734C (en)
DE (2) DE69729872T2 (en)
NO (2) NO327459B1 (en)
WO (2) WO1998005734A1 (en)

Families Citing this family (84)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20080064613A1 (en) * 2006-09-11 2008-03-13 M-I Llc Dispersant coated weighting agents
US6806233B2 (en) * 1996-08-02 2004-10-19 M-I Llc Methods of using reversible phase oil based drilling fluid
US6218342B1 (en) * 1996-08-02 2001-04-17 M-I Llc Oil-based drilling fluid
AU6165199A (en) 1998-10-12 2000-05-01 Dow Chemical Company, The Method for treating subterranean formations
US7034132B2 (en) 2001-06-04 2006-04-25 Anderson David W Therapeutic polypeptides, nucleic acids encoding same, and methods of use
GB2351098B (en) 1999-06-18 2004-02-04 Sofitech Nv Water based wellbore fluids
FR2817165B1 (en) * 2000-11-24 2003-09-26 Inst Francais Du Petrole ORGANIC DEEMULSIZING FORMULATION AND ITS USE IN THE TREATMENT OF DRAINS DRILLED IN OIL MUD
US6499546B1 (en) * 2001-07-20 2002-12-31 M-I, L.L.C. Buffered well fluids
US6608006B2 (en) * 2001-09-14 2003-08-19 Halliburton Energy Services, Inc. Methods of drilling well bores using invertible oil external-water internal drilling fluids
US7125826B2 (en) * 2001-09-14 2006-10-24 Halliburton Energy Services, Inc. Methods of using invertible oil external-water internal fluids in subterranean applications
US6776234B2 (en) 2001-12-21 2004-08-17 Edward L. Boudreau Recovery composition and method
BR0202361B1 (en) * 2002-06-21 2010-11-03 oil-based biodegradable drilling fluid compositions and oil and gas well drilling process.
US7067460B2 (en) * 2002-11-14 2006-06-27 Baker Hughes Incorporated Organofunctional compounds for shale stabilization of the aqueous dispersed phase of non-aqueous based invert emulsion drilling system fluids
EP1783188A1 (en) * 2003-01-24 2007-05-09 Halliburton Energy Services, Inc. Invertible well bore servicing fluid field of the invention
US7152697B2 (en) * 2003-02-03 2006-12-26 M-I Llc Delayed phase changing agent for invert emulsion drilling fluid
UA83655C2 (en) * 2003-02-26 2008-08-11 Ексонмобил Апстрим Рисерч Компани Method for drilling and completing of wells
US6883608B2 (en) * 2003-08-06 2005-04-26 Schlumberger Technology Corporation Gravel packing method
US7081437B2 (en) * 2003-08-25 2006-07-25 M-I L.L.C. Environmentally compatible hydrocarbon blend drilling fluid
US8342240B2 (en) 2003-10-22 2013-01-01 Baker Hughes Incorporated Method for providing a temporary barrier in a flow pathway
US7461699B2 (en) 2003-10-22 2008-12-09 Baker Hughes Incorporated Method for providing a temporary barrier in a flow pathway
US7222672B2 (en) * 2004-01-16 2007-05-29 Halliburton Energy Services, Inc. Wellbore fluids containing additives for removing a filter cake and methods of using the same
US8030252B2 (en) * 2004-03-12 2011-10-04 Halliburton Energy Services Inc. Polymer-based, surfactant-free, emulsions and methods of use thereof
US7507694B2 (en) * 2004-03-12 2009-03-24 Halliburton Energy Services, Inc. Surfactant-free emulsions and methods of use thereof
US7534745B2 (en) * 2004-05-05 2009-05-19 Halliburton Energy Services, Inc. Gelled invert emulsion compositions comprising polyvalent metal salts of an organophosphonic acid ester or an organophosphinic acid and methods of use and manufacture
US20060223714A1 (en) 2005-04-05 2006-10-05 M-L L.L.C. Invert emulsion based completion and displacement fluid and method of use
US8105989B2 (en) * 2005-04-05 2012-01-31 M-I L.L.C. Water based completion and displacement fluid and method of use
CA2527144C (en) * 2005-11-15 2014-04-29 Queen's University At Kingston Reversibly switchable surfactants and methods of use thereof
MX2007009884A (en) * 2006-01-10 2007-09-26 Mi Llc Water absorbing polymers for treatment of brines and water-based drilling fluids.
CA2539418C (en) * 2006-03-13 2013-10-29 Queen's University At Kingston Switchable solvents and methods of use thereof
US7786052B2 (en) * 2006-06-09 2010-08-31 M-I L.L.C. Hydrophobically modified fluid loss additives and viscosifier products
US8178475B2 (en) * 2006-06-09 2012-05-15 M-I L.L.C Surfactant materials and coatings for weighting agents for use in oil based drilling fluids
US8114822B2 (en) * 2006-10-24 2012-02-14 Chemtura Corporation Soluble oil containing overbased sulfonate additives
US7661476B2 (en) * 2006-11-15 2010-02-16 Exxonmobil Upstream Research Company Gravel packing methods
US7754661B2 (en) * 2006-11-28 2010-07-13 Innovative Chemical Technologies Canada Ltd Recycling of oil-based drilling muds
US20080169103A1 (en) * 2007-01-12 2008-07-17 Carbajal David L Surfactant Wash Treatment Fluids and Associated Methods
US8220548B2 (en) * 2007-01-12 2012-07-17 Halliburton Energy Services Inc. Surfactant wash treatment fluids and associated methods
US8541347B2 (en) * 2007-01-26 2013-09-24 Halliburton Energy Services, Inc. Hydrocarbon-acid emulsion compositions and associated methods
WO2008103596A1 (en) * 2007-02-19 2008-08-28 M-I Llc Use of lamellar weighting agents in drilling muds
CA2677840C (en) 2007-02-19 2015-11-24 M-I L.L.C. Breaker and displacement fluid and method of use
US20080261836A1 (en) * 2007-04-20 2008-10-23 Filler Paul A Compositions for use in well servicing fluids
CO6030029A1 (en) * 2007-05-23 2009-04-30 Mi Llc USE OF DIRECT EPOXIC EMULSIONS FOR WELL HOLE STABILIZATION
CO6030030A1 (en) 2007-05-23 2009-04-30 Mi Llc USE OF REVERSE EPOXIC EMULSIONS FOR WELL HOLE STABILIZATION
US7527103B2 (en) 2007-05-29 2009-05-05 Baker Hughes Incorporated Procedures and compositions for reservoir protection
MX344966B (en) 2007-07-02 2017-01-12 M-I Llc Gravel-packing carrier fluid with internal breaker.
FR2918385B1 (en) * 2007-07-05 2009-09-04 Rhodia Operations Sas OIL FORMULATION FOR THE PREVENTION OF WATER COMES IN UNDERGROUND FORMATIONS
EA017950B1 (en) 2007-11-30 2013-04-30 Эм-Ай ЭлЭлСи Breaker fluids and methods of using the same
US7906464B2 (en) 2008-05-13 2011-03-15 Halliburton Energy Services, Inc. Compositions and methods for the removal of oil-based filtercakes
EP2154224A1 (en) * 2008-07-25 2010-02-17 Bp Exploration Operating Company Limited Method of carrying out a wellbore operation
US7833943B2 (en) 2008-09-26 2010-11-16 Halliburton Energy Services Inc. Microemulsifiers and methods of making and using same
US20100243242A1 (en) * 2009-03-27 2010-09-30 Boney Curtis L Method for completing tight oil and gas reservoirs
WO2010148226A2 (en) * 2009-06-17 2010-12-23 M-I L.L.C. Application of degradable fibers in invert emulsion fluids for fluid loss control
US8162056B2 (en) * 2009-06-17 2012-04-24 Schlumberger Technology Corporation Application of degradable fibers in invert emulsion fluids for kill pills
US8413745B2 (en) 2009-08-11 2013-04-09 Baker Hughes Incorporated Water-based mud lubricant using fatty acid polyamine salts and fatty acid esters
US20110036582A1 (en) * 2009-08-14 2011-02-17 Ladva Hemant K Solid incorporated reversible emulsion for a fracturing fluid
CA2683660C (en) 2009-10-28 2017-07-04 Queen's University At Kingston Switchable hydrophilicity solvents and methods of use thereof
US20110186293A1 (en) * 2010-02-01 2011-08-04 Gurmen M Nihat Use of reactive solids and fibers in wellbore clean-out and stimulation applications
EP2534106B1 (en) 2010-02-10 2019-10-16 Queen's University At Kingston Method for modulating ionic strength
WO2012003356A2 (en) 2010-06-30 2012-01-05 M-I L.L.C. Breaker and displacement fluid
AU2011342287B2 (en) 2010-12-15 2015-09-17 Greencentre Canada Systems and methods for use of water with switchable ionic strength
US9045675B2 (en) * 2011-02-15 2015-06-02 Schlumberger Technology Corporation Non-aqueous, acid soluble, high-density completion fluids and process
US20140076635A1 (en) 2011-05-12 2014-03-20 Bp Exploration Operating Company Limited Method of carrying out a wellbore operation
DE102012003224A1 (en) 2012-02-20 2013-08-22 Sasol Germany Gmbh Drilling fluid, use and method using the drilling fluid
AU2013246410B2 (en) * 2012-04-09 2015-06-04 Halliburton Energy Services, Inc. Wellbore servicing fluid system and methods of use
US9115304B2 (en) 2012-04-09 2015-08-25 Halliburton Energy Services, Inc. Wellbore servicing fluid system and methods of use
US20130288933A1 (en) * 2012-04-30 2013-10-31 Chevron Phillips Chemical Company Lp Rheology Modifiers
US9701881B2 (en) * 2012-06-20 2017-07-11 Halliburton Energy Services, Inc. Oil absorbent oilfield materials as additives in oil-based drilling fluid applications
WO2014039467A1 (en) * 2012-09-10 2014-03-13 M-I L.L.C. Method for increasing density of brine phase in oil-based and synthetic-based wellbore fluids
US9133385B2 (en) * 2012-09-30 2015-09-15 Halliburton Energy Services, Inc. Method for improving high temperature rheology in drilling fluids
US9890321B2 (en) 2012-10-22 2018-02-13 Halliburton Energy Services, Inc. Wellbore servicing compositions and methods of making and using same
US8727005B1 (en) * 2012-10-30 2014-05-20 Halliburton Energy Services, Inc. Wellbore servicing compositions and methods of making and using same
US20150107349A1 (en) * 2013-10-17 2015-04-23 Schlumberger Technology Corporation Mud logging depth and composition measurements
WO2015080961A2 (en) * 2013-11-27 2015-06-04 Cabot Corporation Methods to separate brine from invert emulsions used in drilling and completion fluids
WO2015174974A1 (en) * 2014-05-15 2015-11-19 Halliburton Energy Services, Inc. Organo-clay free invert emulsion fluids
GB2562967B (en) * 2016-02-19 2022-05-18 Schlumberger Technology Bv Reversible oil-based mud
CN107663446B (en) * 2016-07-28 2020-08-07 中国石油化工股份有限公司 Blocking remover for oil-based drilling fluid and preparation method thereof
CA3053489A1 (en) * 2017-04-24 2018-11-01 Huntsman Petrochemical Llc Novel water-in-oil hydraulic fracturing fluid and method of using such
CN107603576B (en) * 2017-07-27 2020-11-24 中国海洋石油集团有限公司 Oil-based mud flushing fluid for well cementation and preparation and evaluation methods thereof
CA3079057A1 (en) * 2017-10-30 2019-05-09 Craig Nazzer Method for separating drill fluid from oily drill cuttings slurries
RU2700851C1 (en) * 2018-06-18 2019-09-23 Общество с ограниченной ответственностью "ВИ-ЭНЕРДЖИ" Method of selective treatment of bottom-hole formation zone
NO20210330A1 (en) * 2018-10-12 2021-03-12 Halliburton Energy Services Inc Acid sensitive emulsifier for use in subterranean treatment operations
CN111379541A (en) * 2018-12-28 2020-07-07 新疆中核天山铀业有限公司 Acid method underground leaching mountain land layer blockage removing method
CN110642739B (en) * 2019-08-08 2020-11-24 中国石油大学(北京) PH responsive soilless phase reversible emulsified drilling fluid and preparation and reversion method thereof
WO2021198770A1 (en) * 2020-03-31 2021-10-07 Q'max Solutions Inc. Methods and devices for maintaining emulsion stability of non-aqueous drilling fluids
US20230174841A1 (en) * 2021-12-08 2023-06-08 Halliburton Energy Services, Inc. Breakable Emulsifiers

Family Cites Families (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3125517A (en) * 1964-03-17 Chzchzoh
US2802531A (en) 1954-04-26 1957-08-13 Dow Chemical Co Well treatment
US2900337A (en) * 1956-12-20 1959-08-18 Gulf Research Development Co Weighting material
US2900336A (en) * 1956-12-20 1959-08-18 Gulf Research Development Co Drilling fluids
US3804760A (en) 1969-12-02 1974-04-16 Shell Oil Co Well completion and workover fluid
GB1438948A (en) * 1972-08-11 1976-06-09 Unilever Ltd Solvent type cleaners
CA1023239A (en) 1973-05-01 1977-12-27 Leroy L. Carney Water-in-oil emulsions and emulsifiers for preparing the same
US4040866A (en) * 1973-10-05 1977-08-09 N L Industries, Inc. Laundering of oil base mud cuttings
US4230586A (en) * 1978-08-07 1980-10-28 The Lubrizol Corporation Aqueous well-drilling fluids
GB8412053D0 (en) * 1984-05-11 1984-06-20 Shell Int Research Biopolymer formulations
ATE51012T1 (en) * 1983-09-09 1990-03-15 Shell Int Research BIOPOLYMER COMPOSITIONS AND METHODS OF MAKING SAME.
US4735731A (en) 1984-06-15 1988-04-05 The Dow Chemical Company Process for reversible thickening of a liquid
US4582543A (en) 1984-07-26 1986-04-15 The Lubrizol Corporation Water-based metal-containing organic phosphate compositions
US4615813A (en) 1984-07-26 1986-10-07 The Lubrizol Corporation Water-based metal-containing organic phosphate compositions
US4645608A (en) 1984-10-10 1987-02-24 Sun Drilling Products, Corp. Method of treating oil contaminated cuttings
GB8526454D0 (en) 1985-10-26 1985-11-27 Perchem Ltd Organic salt
GB8530271D0 (en) * 1985-12-09 1986-01-22 Shell Int Research Preparation of polysaccharide in oil dispersion
GB8623891D0 (en) 1986-10-04 1986-11-05 Perchem Ltd Additives
GB8630295D0 (en) 1986-12-18 1987-01-28 Shell Int Research Drilling fluid
GB8902762D0 (en) 1989-02-08 1989-03-30 Shell Int Research Surfactant composition
DE3903785A1 (en) 1989-02-09 1990-08-16 Henkel Kgaa OLEOPHILIC BASE AMINE COMPOUNDS AS ADDITIVES IN INVERT DRILLING CLOSURES
DE3903784A1 (en) 1989-02-09 1990-08-16 Henkel Kgaa MONOCARBONIC ACID METHYL ESTER IN INVERT DRILLING CLOSURE
US5254531A (en) 1989-02-09 1993-10-19 Henkel Kommanditgesellschaft Auf Aktien Oleophilic basic amine compounds as an additive for invert drilling muds
DE3907392A1 (en) 1989-03-08 1990-09-13 Henkel Kgaa ESTER OF CARBONIC ACIDS, MEDIUM CHAIN LENGTH, AS THE BEST NEEDLE PART OF THE OIL PHASE IN INVERT DRILL RINSE
US5189012A (en) 1990-03-30 1993-02-23 M-I Drilling Fluids Company Oil based synthetic hydrocarbon drilling fluid
US5162097A (en) 1990-07-10 1992-11-10 General Electric Company Steam cooled nuclear reactor with bi-level core
US5156686A (en) * 1990-11-30 1992-10-20 Union Oil Company Of California Separation of oils from solids
DZ1577A1 (en) * 1991-05-08 2002-02-17 Hoechst Ag Use of acetals.
DE4120041A1 (en) * 1991-06-18 1992-12-24 Henkel Kgaa USE OF SELECTED OLEOPHILIC COMPOUNDS WITH GREATER BIODEGRADILITY TO IMPROVE THE OILABILITY OF FINE-PARTICULAR SOLIDS AND THEIR USE AS FLUID-LOSS ADDITIVES
WO1993016145A1 (en) * 1992-02-12 1993-08-19 Exxon Chemical Patents Inc. Functional fluid
US5300323A (en) 1992-10-21 1994-04-05 Henkel Corporation Reducing or avoiding pinhole formation in autodeposition on zinciferous surfaces
US5403820A (en) 1992-12-24 1995-04-04 O'brien-Goins-Simpson & Associates Environmentally safe water base drilling fluid
US5634984A (en) * 1993-12-22 1997-06-03 Union Oil Company Of California Method for cleaning an oil-coated substrate
US6218342B1 (en) * 1996-08-02 2001-04-17 M-I Llc Oil-based drilling fluid

Also Published As

Publication number Publication date
NO981161L (en) 1998-05-15
US6218342B1 (en) 2001-04-17
AU724271B2 (en) 2000-09-14
WO1998005733A1 (en) 1998-02-12
NO322890B1 (en) 2006-12-18
NO981161D0 (en) 1998-03-16
EP0920484B1 (en) 2004-07-14
US20010051593A1 (en) 2001-12-13
EP0854897B1 (en) 2003-04-09
CA2231555C (en) 2008-01-15
DE69729872T2 (en) 2005-08-25
DE69729872D1 (en) 2004-08-19
ATE236968T1 (en) 2003-04-15
NO981159D0 (en) 1998-03-16
EP0920484A1 (en) 1999-06-09
WO1998005734A1 (en) 1998-02-12
ATE271112T1 (en) 2004-07-15
DE69720676T2 (en) 2004-05-19
DE69720676D1 (en) 2003-05-15
NO327459B1 (en) 2009-07-06
NO981159L (en) 1998-05-15
AU3904697A (en) 1998-02-25
CA2231734C (en) 2008-03-11
EP0854897A1 (en) 1998-07-29
US6790811B2 (en) 2004-09-14
CA2231555A1 (en) 1998-02-12

Similar Documents

Publication Publication Date Title
CA2231734A1 (en) Improved oil-based drilling fluid
GB2233577B (en) Method of separating oil,water,sand,and gas from produced fluids
FI905156A0 (en) Extraction of oil from oil deposits
AU625258B2 (en) Method of removing sludge from lubricating oils
NO885038L (en) PROCEDURE FOR THE REMOVAL OF WATER-SOLUBLE ORGANIC MATERIALS FROM OIL PROCESS WATER.
DE69408167T2 (en) SOLVENT SOAPS AND METHOD FOR USE THEREOF
CA2349300A1 (en) Method for removal of undesired fluids from a wellbore
HUP0102433A2 (en) Method for preventing deposits in oil extraction
ATE159919T1 (en) METHOD FOR SEPARATING OIL FROM FLUSHING WATER
WO2002024296A3 (en) Separator unit capable of less-dense solids and/or buoyant solids removal
NO177942C (en) Process of enhanced oil recovery from an underground formation
JPS51125961A (en) Treating method of oil-containing emulsified waste water
CA2159406A1 (en) Process for the Extraction of Crude Oil
WO2000054868A3 (en) A method for the extraction of oil by microemulsification
AU651069B2 (en) Method of removing hydroperoxides from lubricating oils
EP0337295A3 (en) Renin-inhibiting n-heterocyclic dipeptides
NO952867D0 (en) Aim for separating solids from drilling fluid
GB2196982A (en) Method of desulphuration of heavy oil residues
NO175737C (en) Device for preventing the drop of oil droplets when an oil / water stream is fed into an oil-from-water separator
IL92872A (en) Removal of oil from water
KR950031904A (en) Dehydration Method of Alumina Trihydrate
BG101768A (en) Method for clavulanic acid extraction
CA2289964A1 (en) Dehydration of drilling mud
AU546593B2 (en) Process of recovering oil from oil-containing minerals
AU549064B2 (en) Process of recovering oil from oil-containing minerals

Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed

Effective date: 20150731