CN101724386B - Low-temperature filling sand control agent - Google Patents
Low-temperature filling sand control agent Download PDFInfo
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- CN101724386B CN101724386B CN 200810230523 CN200810230523A CN101724386B CN 101724386 B CN101724386 B CN 101724386B CN 200810230523 CN200810230523 CN 200810230523 CN 200810230523 A CN200810230523 A CN 200810230523A CN 101724386 B CN101724386 B CN 101724386B
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- sand control
- control agent
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- filling sand
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses a low-temperature filling sand control agent, which is prepared from raw materials of oil well cement, a reinforcing agent, sodium bentonite, diesel, ammonium carbonate and a retarder in a weight ration of (0.65-0.7): (0.18-0.22): (0.003-0.006): (0.1-0.15): (0.001-0.0015): (0.003-0.006). The sand control agent forms a permeable artificial borehole wall in a near wellbore zone through the self-consolidation and the consolidation with formation sand in a formation, and then stops and consolidates the formation sand in the formation after steam injection for improving the consolidation strength so as to achieve the aim of preventing oil wells from producing sand. At the same time, the artificial borehole wall has adjustable permeability, and can meet the requirement of the permeability of different formations according to the physical property of an oil layer; and the sand control agent has the advantages of good effect, low cost, and high temperature resistance, and can be widely applied to sand control of thermal production wells.
Description
Technical field
The present invention relates to a kind of sand control agent, relate in particular to a kind of high temperature resistant for the oil-field thick-oil thermal recovery well, have an infiltrative low-temperature filling type sand control agent.
Background technology
Steam stimulation is one of major way of domestic and international heating exploitation viscous crude, adopt in this kind mode heavy crude producing process, because injection is adopted by force, oil well shakes out in process of production in a large number, oil well operation is frequent, efficient is low when causing production, is seriously restricting the whole development level in oil field and the raising of benefit.In order to alleviate the contradiction of exploitation and sand production, improve production timeliness and the development effectiveness of oil well, realize that output is steadily increasing, adopt oil well is carried out sand control, also can guarantee that oil reservoir injury minimum is one of important measures that improve development effectiveness.At present, the high temperature sand-fixing agent sand control life commonly used is about 90 days, and efficient is about 30%, administers short, the efficient whole control that has had a strong impact on thick oil thermal extraction such as low of validity period, and the viscous crude productivity effect is poor.
Summary of the invention
The object of the present invention is to provide that a kind of heat resistance is good, sand control intensity is high, efficient high low-temperature filling sand control agent.
To achieve these goals, technical scheme of the present invention has adopted a kind of low-temperature filling sand control agent, be that raw material is prepared from by oil well cement, calcium sulfate, sodium bentonite, diesel oil, volatile salt and borax, wherein the weight proportion of each component is oil well cement: calcium sulfate: sodium bentonite: diesel oil: volatile salt: borax=(0.65 ∽ 0.70): (0.18 ∽ 0.22): (0.003 ∽ 0.006): (0.10 ∽ 0.15): (0.001 ∽ 0.0015): (0.003 ∽ 0.006).
Described calcium sulfate is the commercial sulphuric acid calcium powder.
Described borax is preferably the borax powder.
Described oil well cement strength grade 〉=42.5MPa.
Described commercial sulphuric acid calcium powder granularity≤0.04mm is separated into colloidal in water.
Sand control mechanism of the present invention is: this product water preparation, be dispersed in the water, be not more than at reservoir temperature under 80 ℃ the condition, after pump pumps into the stratum, by the solidifying agent oil well cement in the component, the swelling agent volatile salt) and permeate agent diesel oil, the retardant borax, the prepared sand control agent of the present invention that forms of toughener commercial sulphuric acid calcium powder and dispersion agent sodium bentonite reaches with reservoir sand fixed by self in the stratum, form the artificial borehole wall with permeability in the immediate vicinity of wellbore, behind steam injection raising consolidation strength, in the stratum, stop and consolidating stratum sand, reach the purpose that prevents sand production.Simultaneously, the artificial borehole wall perviousness is adjustable, can satisfy according to reservoir physical property the requirement of the rate of permeation of Different Strata, and sand control agent of the present invention is effective, and cost is low and high temperature resistant, and the sand control that can be widely used in thermal recovery well is administered.
The technical performance index of sand control agent of the present invention is as follows:
| Title | Index |
| Outward appearance | The grey powder |
| Presetting period | 40℃>12h；70℃>6h |
| Temperature tolerance | >300℃ |
| Consolidation strength | ≥3.5MPa |
| Rate of permeation | ≥1dc |
In technical performance index detection method of the present invention, outward appearance, presetting period, temperature tolerance, consolidation strength, infiltrative detection method are:
(1) preparation of low-temperature filling sand control agent
Take by weighing the sand control agents that oil well cement, sulfuric acid calcium powder, sodium bentonite, diesel oil, volatile salt, borax powder are mixed with 500 grams with table balance by proportion speed, clear water 350 grams.In beaker, be mixed with uniform suspension sand control agent.
(2) sand control agent suspension is poured into respectively in two Plastic Bottles, tightened bottle cap, post label, put into temperature and be 70 ℃ water-bath, one is used for minute, and one is used for measuring ultimate compression strength.
(3) presetting period is measured: measure the presetting period by the method for stipulating among the GB/T19139-2003.
(4) compressive strength determination: the maintenance 72 hours under 70 ℃ of conditions of fixed sand control agent sample, make the square of length of side 5cm, survey antigen ultimate compression strength at the pressure experiment machine.
(5) permeability determination: press the SY/T5336-1996 regulation after sand-fixing agent is fixed and measure.
Sand control agent field experiment situation of the present invention: nearly 100 wells time are used in field experiment, technique success ratio 100%, and measure is efficient 86%, and 35000 tons of stimulations have good economic benefit and social benefit.
Embodiment
Embodiment 1
Low-temperature filling sand control agent of the present invention is prepared from by the component of following parts by weight: every group takes by weighing 700 parts of oil well cements, 181 parts of commercial sulphuric acid calcium, 3 parts of sodium bentonites, 100 parts of diesel oil, 1.5 parts of volatile salts, 5 parts of boraxs by weight, stirred 8 minutes with agitator, it is mixed prepare sand control agent of the present invention.
Embodiment 2
Low-temperature filling sand control agent of the present invention is prepared from by the component of following parts by weight: take by weighing by weight 650 parts of oil well cements, 220 parts of commercial sulphuric acid calcium powders, 5 parts of sodium bentonites, 120 parts of diesel oil, 1.5 parts of volatile salts, 5 parts of boraxs, stirred 10 minutes with agitator, it is mixed prepare sand control agent of the present invention.
Embodiment 3
Low-temperature filling sand control agent of the present invention is prepared from by the component of following parts by weight: every group takes by weighing 680 parts of oil well cements, 200 parts of commercial sulphuric acid calcium, 5 parts of sodium bentonites, 100 parts of diesel oil, 1.5 parts of volatile salts, 5 parts in borax powder by weight, stirred 5 minutes with agitator, it is mixed prepare sand control agent of the present invention.
It should be noted last that: above embodiment is only in order to explanation, and unrestricted technical scheme of the present invention, although with reference to above-described embodiment the present invention is had been described in detail, those of ordinary skill in the art is to be understood that, such as the replacement that is equal to each raw material, and not breaking away from any modification or partial replacement of the spirit and scope of the present invention, it all should be encompassed in the middle of the claim scope of the present invention.
Claims (6)
1. a reservoir temperature is not more than 80 degrees centigrade filling sand control agent, it is characterized in that: be that raw material is prepared from by oil well cement, toughener, sodium bentonite, diesel oil, volatile salt and retardant, wherein the weight proportion of each component is oil well cement: toughener: sodium bentonite: diesel oil: volatile salt: retardant=(0.65 ∽ 0.7): (0.18 ∽ 0.22): (0.003 ∽ 0.006): (0.1 ∽ 0.15): (0.001 ∽ 0.0015): (0.003 ∽ 0.006); Wherein, described toughener is calcium sulfate; Described retardant is borax.
2. reservoir temperature according to claim 1 is not more than 80 degrees centigrade filling sand control agent, it is characterized in that: described calcium sulfate is commercial sulphuric acid calcium.
3. reservoir temperature according to claim 2 is not more than 80 degrees centigrade filling sand control agent, it is characterized in that: described commercial sulphuric acid calcium is preferably the commercial sulphuric acid calcium powder.
4. reservoir temperature according to claim 3 is not more than 80 degrees centigrade filling sand control agent, it is characterized in that: described commercial sulphuric acid calcium powder granularity≤0.04mm is separated into colloidal in water.
5. reservoir temperature according to claim 1 is not more than 80 degrees centigrade filling sand control agent, it is characterized in that: described borax is the borax powder.
6. reservoir temperature according to claim 1 is not more than 80 degrees centigrade filling sand control agent, it is characterized in that: the strength grade 〉=42.5MPa of described oil well cement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810230523 CN101724386B (en) | 2008-10-22 | 2008-10-22 | Low-temperature filling sand control agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200810230523 CN101724386B (en) | 2008-10-22 | 2008-10-22 | Low-temperature filling sand control agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101724386A CN101724386A (en) | 2010-06-09 |
| CN101724386B true CN101724386B (en) | 2013-02-27 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200810230523 Active CN101724386B (en) | 2008-10-22 | 2008-10-22 | Low-temperature filling sand control agent |
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| CN (1) | CN101724386B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102128016A (en) * | 2010-12-22 | 2011-07-20 | 中国石油天然气集团公司 | Method for improving resin sand curing strength by using stratum thermogenesis technology |
| CN107779185A (en) * | 2016-08-30 | 2018-03-09 | 中国石油天然气股份有限公司 | A kind of oil-water well sand-fixating agent and its preparation method and application |
| CN107129798B (en) * | 2017-04-12 | 2020-07-31 | 中国石油化工股份有限公司 | High-temperature-resistant permeable artificial well wall sand-preventing agent |
| CN108728071B (en) * | 2017-04-21 | 2020-11-10 | 中国石油化工股份有限公司 | Film-forming type scouring-resistant sand control agent emulsion |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1587638A (en) * | 2004-09-17 | 2005-03-02 | 辽河石油勘探局 | Profile control and sand fixing integrated technology for heat oil production well |
| EP1674434A1 (en) * | 2004-12-21 | 2006-06-28 | Services Petroliers Schlumberger | Fluid loss control agents and compositions for cementing oil and gas wells comprising said fluid loss control agent |
| CN1803968A (en) * | 2005-01-12 | 2006-07-19 | 新疆石油管理局钻井工艺研究院 | MTC well cementing liquid system |
| CN100339459C (en) * | 2005-11-07 | 2007-09-26 | 刘茂平 | Seal stoppage agent for oil-well |
| US7285166B2 (en) * | 2002-12-10 | 2007-10-23 | Halliburton Energy Services, Inc. | Zeolite-containing cement composition |
| CN101270278A (en) * | 2008-05-07 | 2008-09-24 | 东营市汇友石油新技术开发有限责任公司 | Netted sand prevention material |
-
2008
- 2008-10-22 CN CN 200810230523 patent/CN101724386B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7285166B2 (en) * | 2002-12-10 | 2007-10-23 | Halliburton Energy Services, Inc. | Zeolite-containing cement composition |
| CN1587638A (en) * | 2004-09-17 | 2005-03-02 | 辽河石油勘探局 | Profile control and sand fixing integrated technology for heat oil production well |
| EP1674434A1 (en) * | 2004-12-21 | 2006-06-28 | Services Petroliers Schlumberger | Fluid loss control agents and compositions for cementing oil and gas wells comprising said fluid loss control agent |
| CN1803968A (en) * | 2005-01-12 | 2006-07-19 | 新疆石油管理局钻井工艺研究院 | MTC well cementing liquid system |
| CN100339459C (en) * | 2005-11-07 | 2007-09-26 | 刘茂平 | Seal stoppage agent for oil-well |
| CN101270278A (en) * | 2008-05-07 | 2008-09-24 | 东营市汇友石油新技术开发有限责任公司 | Netted sand prevention material |
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| Publication number | Publication date |
|---|---|
| CN101724386A (en) | 2010-06-09 |
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