CN1177053A - Single liquid method combined with two liquid method for water sealing in borehole - Google Patents
Single liquid method combined with two liquid method for water sealing in borehole Download PDFInfo
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- CN1177053A CN1177053A CN 97118381 CN97118381A CN1177053A CN 1177053 A CN1177053 A CN 1177053A CN 97118381 CN97118381 CN 97118381 CN 97118381 A CN97118381 A CN 97118381A CN 1177053 A CN1177053 A CN 1177053A
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Abstract
The present invention relates to a kind of method combining single liquid method and double liquid method. It uses two kinds of working liquid, each of them possesses plugging capability, when they contact, reaction will take place and form into a plugging matter. Said method is used as a plugging system to pour into the stratum, after the medicament in the stratum goes to a specific distance said two kinds of working liquid will contact each other and produce the plugging matter to avoid the unreacted medicament further enter to the deep portion of the stratum and diluted by the stratum fluid. The uncontacted portion of two kinds of working liquid will either gel or expanding which possess plugging capability itself and avoid the waste of medicanment.
Description
The invention belongs to the oilfield chemistry water plugging and profiling technology in the petroleum works, the water plugging and profile controlling method of particularly a kind of single-fluid process, two-fluid process combination.
In field produces, be used for the chemical water shutoff of oil well and water injection well and adjust water blockoff, the profile control method that injectivity profile is adopted when uneven, according to the difference of chemical reaction mode, usually be divided into two kinds of single-fluid process and two-fluid processes.Single-fluid process is with a kind of working solution and injects the stratum, reacts under formation temperature conditions or contact generation physics, chemical reaction with water, becomes the shutoff material with shut-off capacity; Two-fluid process is to use two kinds of different working solutions, separates with insulating liquid, alternately injects the stratum, and through be extrapolated to certain distance in the stratum after, two kinds of working solution contacts chemical reaction take place produce the shutoff material.These two kinds of methods in actual applications, have the following disadvantages: the liquid of single-fluid process is easily diluted, during the negative pressure stratum of especially being in a terrible debt on the stratum, medicament can be brought into earth formation deep and diluted more severe, may cause intensity at underground formation shutoff material to reduce or be difficult to form the shutoff material: two kinds of medicaments in the two-fluid process only meet in the stratum and just chemical reaction can take place after the contact, produce the shutoff material, and two kinds of working solutions can not all contact or even contact seldom in the stratum, have caused a large amount of wastes of medicament; Also make the plugging effect variation.
The objective of the invention is to adopt the water plugging and profile controlling method of single-fluid process, two-fluid process combination, with the shutoff possibility of raising single-fluid process and the medicament utilization rate of two-fluid process.
The object of the present invention is achieved like this, in water plugging and profile controlling, use two kinds of working solutions, make each hydraulic fluid itself all have shut-off capacity, the single-fluid process that forms the shutoff material, the water plugging and profile controlling method of two-fluid process combination can react again during two kinds of working solution contacts.
The present invention adopts water glass (being silicate of soda) conduct a kind of working solution wherein commonly used in the water plugging and profile controlling job execution, its preparation is become water glass acid gel or the water glass base gel of knowing, the concentration of water glass solution is 5--30%, preferably concentration is 8--20%, and wherein the modulus of water glass (mol ratio of silica and sodium oxide molybdena in the silicate of soda molecule) is 2.8--3.4.Acid gel can select for use hydrochloric acid, sulfuric acid etc. as activator, and controlling its gel time is 3--8h.
Water glass can also use activators such as NaOH, sulfuric acid amine, ammonium chloride, formaldehyde as working solution, makes it produce gel solidification, and like this, first kind of working solution water glass itself can produce shut-off capacity.
Employed second kind of working solution is the chemical agent that can produce the shutoff material with first kind of working solution effect, use calcium chloride or the magnesium chloride solution of 5--20%, carry polyacrylamide three-dimensional polymer or acrylic acid in the solution, acrylamide build copolymer or acrylic acid, acrylamide, dimethyl diallyl ammonium chloride ternary build copolymer colloid particle, the volume expansion type polyacrylamide, above-mentioned several working concentrations that are carried material are 3--12%, preferably concentration is 5--9%, is carried material colloidal solid self or water-swellable in the stratum and plays plugging action.
Aforesaid two kinds of working solutions inject the stratum according to the two-fluid process mode, and chemical reaction can take place in contact in the stratum, generates the shutoff material, promptly is water glass-calcium chloride two-fluid process of knowing.
The method of single-fluid process of the present invention, two-fluid process combination, inject the stratum as a shutoff system, medicament on the stratum after being extrapolated to certain distance, two kinds of working solutions contact, promptly produced the shutoff material, avoided unreacted medicament to continue to enter earth formation deep, and the part that two kinds of working solutions do not contact or form gelinite or medicament expands and also has self shut-off capacity has been avoided the waste of medicament by the further dilution of formation fluid institute.Increase shut-off capacity like this, and improved the water plugging and profile controlling effect.
Embodiment is as follows:
Embodiment 1:
The water glass working solution adopts the water glass acid gel: as activator, concentration of sodium silicate is 12% (weight concentration: following concentration is all the weight percent concentration that medicine accounts for total component) with hydrochloric acid, and modulus is 3.2; The concentration of hydrochloric acid is 2%.The gel time 6h of working solution.
Second working solution adopts calcium chloride to carry ternary build copolymer micelle.Calcium chloride concentration is 9%, ternary build copolymer micelle is the three-dimensional polymer of using acrylic acid, acrylamide, dimethyl diallyl ammonium chloride copolymerization and forming with the methylene-bisacrylamide precursor reactant, wear into the particle size that is fit to the stratum with colloid mill when three-dimensional polymer uses, the application concentration of polyacrylamide three-dimensional polymer is 5%.
Embodiment 2:
The water glass working solution adopts sulfuric acid as activator, and concentration of sodium silicate is 12% (weight concentration; Following concentration is all the concentration expressed in percentage by weight that medicine accounts for total component), modulus is 3.2; The concentration of sulfuric acid is 3.5%, the gel time 8h of working solution.
Second working solution adopts calcium chloride to carry volume expansion type polyacrylamide (SAP) particle commonly used in the oil field.Calcium chloride concentration is 9%, and the volume expansion type polyacrylamide has been processed into the particle size that is suitable for the stratum when using, and the working concentration of volume expansion type polyacrylamide is 10%.
Claims (3)
1. the invention belongs to the oilfield chemistry water plugging and profiling technology in the petroleum works, the water plugging and profile controlling method of particularly a kind of single-fluid process, two-fluid process combination, adopt water glass conduct a kind of working solution wherein commonly used in the water plugging and profile controlling job execution, its preparation is become water glass acid gel or the water glass base gel of knowing, it is characterized in that: the concentration of water glass solution is 5--30%, preferably concentration is 8--20%, wherein the modulus of water glass (mol ratio of silica and sodium oxide molybdena in the silicate of soda molecule) is 2.8--3.4, and controlling its gel time is 3--8h; Water glass can use different activators as working solution, makes it produce gel solidification, and like this, first kind of working solution water glass itself can produce shut-off capacity; Calcium chloride or magnesium chloride solution that employed second kind of working solution is 5--20%, carry polyacrylamide three-dimensional polymer or acrylic acid in the solution, acryloyl ammonium build copolymer or acrylic acid, acrylamide, dimethyl diallyl ammonium chloride ternary build copolymer colloid particle, the volume expansion type polyacrylamide, above-mentioned several activities that are carried material are 3-12%, preferably concentration is 5--9%, be carried material colloidal solid self or water-swellable in the stratum and play plugging action, aforesaid two kinds of working solutions inject the stratum according to the two-fluid process mode, chemical reaction can take place in contact in the stratum, generates the shutoff material.
2. the water plugging and profile controlling method of single-fluid process according to claim 1, two-fluid process combination, it is characterized in that: the water glass working solution adopts the water glass acid gel: with hydrochloric acid as activator, concentration of sodium silicate is 12% (weight concentration: following concentration is all the weight percent concentration that medicine accounts for total component), and modulus is 3.2; The concentration of hydrochloric acid is 2%, the gel time 6h of working solution; Second working solution adopts calcium chloride to carry ternary build copolymer micelle, calcium chloride concentration is 9%, ternary build copolymer micelle is the three-dimensional polymer of using acrylic acid, acrylamide, dimethyl diallyl ammonium chloride copolymerization and forming with the methylene-bisacrylamide reaction, three-dimensional polymer has colloid mill to wear into the particle size that is fit to the stratum when using, the application concentration of polyacrylamide three-dimensional polymer is 5%.
3. the water plugging and profile controlling method of single-fluid process according to claim 1, two-fluid process combination is characterized in that: the water glass working solution adopts sulfuric acid as activator, and concentration of sodium silicate is 12%, and modulus is 3.2; The concentration of sulfuric acid is 3.5%, the gel time 8h of working solution; Second working solution adopts calcium chloride to carry volume expansion type polyacrylamide (SAP) particle commonly used in the oil field.Calcium chloride concentration is 9%, and the volume expansion type polyacrylamide has been processed into the particle size that is suitable for the stratum when using, and the working concentration of volume expansion type polyacrylamide is 10%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118381A CN1055329C (en) | 1997-10-21 | 1997-10-21 | Single liquid method combined with two liquid method for water sealing in borehole |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN97118381A CN1055329C (en) | 1997-10-21 | 1997-10-21 | Single liquid method combined with two liquid method for water sealing in borehole |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1177053A true CN1177053A (en) | 1998-03-25 |
| CN1055329C CN1055329C (en) | 2000-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN97118381A Expired - Fee Related CN1055329C (en) | 1997-10-21 | 1997-10-21 | Single liquid method combined with two liquid method for water sealing in borehole |
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| CN (1) | CN1055329C (en) |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079484C (en) * | 1999-08-19 | 2002-02-20 | 白云渡 | Section regulation process for interrupted water-injection depth of water injection well |
| CN102876304A (en) * | 2012-09-18 | 2013-01-16 | 中国石油化工股份有限公司 | Bottom water plugging agent system and process for horizontal well |
| CN103627376A (en) * | 2013-12-26 | 2014-03-12 | 中国石油天然气股份有限公司冀东油田分公司钻采工艺研究院 | Water glass inorganic gel plugging agent as well as preparation and using methods thereof |
| CN103806860A (en) * | 2014-03-06 | 2014-05-21 | 新疆克拉玛依市采丰实业有限责任公司 | Application of aqueous solution of sodium silicate in middle and later periods of oil field production |
| CN103865504A (en) * | 2014-03-10 | 2014-06-18 | 东北石油大学 | Gel double-solution plugging regulating agent of steam injection well for thermal recovery and plugging regulating method using gel double-solution plugging regulating agent |
| CN103865510A (en) * | 2014-03-10 | 2014-06-18 | 东北石油大学 | Thermal-recovery injection well gel single-liquid modifying and flooding agent and modifying and flooding method thereof |
| CN103865503A (en) * | 2014-03-10 | 2014-06-18 | 东北石油大学 | Novel high-temperature resistant inorganic particle-gel compound double-liquid blocking agent and blocking method thereof |
| CN104140796A (en) * | 2013-09-06 | 2014-11-12 | 中国石油化工股份有限公司 | Plugging agent system suitable for low temperature oil reservoirs and preparation method thereof |
| CN105754565A (en) * | 2016-03-23 | 2016-07-13 | 重庆科技学院 | Organic microsphere and inorganic silicate compounded type channeling sealing agent for thermal extraction of heavy oil and preparation method of channeling sealing agent |
| CN106543021A (en) * | 2015-09-17 | 2017-03-29 | 中国石油化工股份有限公司 | Amphoteric ion copolymer cationic monomer and preparation method thereof and amphoteric ion copolymer and its preparation method and application |
| CN107366519A (en) * | 2017-07-25 | 2017-11-21 | 中国石油天然气股份有限公司 | A kind of fine profile control method of chemistry |
| CN109868126A (en) * | 2017-12-01 | 2019-06-11 | 中国石油天然气股份有限公司 | A kind of water shutoff agent and its preparation method and application |
| CN111518529A (en) * | 2019-02-02 | 2020-08-11 | 中国石油天然气股份有限公司 | Inorganic gel type profile control agent and profile control method |
| CN115806808A (en) * | 2021-09-14 | 2023-03-17 | 中国石油化工股份有限公司 | Bridging leakage blocking method and application thereof |
| CN116445143A (en) * | 2023-04-27 | 2023-07-18 | 中国石油大学(华东) | Single-liquid plugging system and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1295422C (en) * | 2001-08-27 | 2007-01-17 | 石油大学(华东) | Edge water scheduling technique for oil field using edge water to displace oil |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1003048B (en) * | 1986-12-31 | 1989-01-11 | 胜利油田采油工艺研究院 | Zirconium gel water sealing agent |
| US5222557A (en) * | 1990-12-03 | 1993-06-29 | Mobil Oil Corporation | Sand control agent and process |
| US5257664A (en) * | 1990-12-03 | 1993-11-02 | Mobil Oil Corporation | Steam injection profile control agent and process |
| CN1089683A (en) * | 1993-01-05 | 1994-07-20 | 中国矿业大学 | Novel material for sealing borehole |
-
1997
- 1997-10-21 CN CN97118381A patent/CN1055329C/en not_active Expired - Fee Related
Cited By (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1079484C (en) * | 1999-08-19 | 2002-02-20 | 白云渡 | Section regulation process for interrupted water-injection depth of water injection well |
| CN104745158A (en) * | 2012-09-18 | 2015-07-01 | 中国石油化工股份有限公司 | Bottom water plugging agent system and bottom water plugging technology for horizontal well |
| CN102876304A (en) * | 2012-09-18 | 2013-01-16 | 中国石油化工股份有限公司 | Bottom water plugging agent system and process for horizontal well |
| CN102876304B (en) * | 2012-09-18 | 2015-05-20 | 中国石油化工股份有限公司 | Bottom water plugging agent system and process for horizontal well |
| CN104140796B (en) * | 2013-09-06 | 2017-02-22 | 中国石油化工股份有限公司 | Plugging agent system suitable for low temperature oil reservoirs and preparation method thereof |
| CN104140796A (en) * | 2013-09-06 | 2014-11-12 | 中国石油化工股份有限公司 | Plugging agent system suitable for low temperature oil reservoirs and preparation method thereof |
| CN103627376A (en) * | 2013-12-26 | 2014-03-12 | 中国石油天然气股份有限公司冀东油田分公司钻采工艺研究院 | Water glass inorganic gel plugging agent as well as preparation and using methods thereof |
| CN103627376B (en) * | 2013-12-26 | 2016-05-25 | 中国石油天然气股份有限公司冀东油田分公司钻采工艺研究院 | Waterglass inorganic gel plugging agent and preparation and application thereof |
| CN103806860A (en) * | 2014-03-06 | 2014-05-21 | 新疆克拉玛依市采丰实业有限责任公司 | Application of aqueous solution of sodium silicate in middle and later periods of oil field production |
| CN103865503B (en) * | 2014-03-10 | 2016-08-17 | 东北石油大学 | High temperature resistant inorganic granulated gel compounds double-liquid seal blocking agent and method for blocking thereof |
| CN103865503A (en) * | 2014-03-10 | 2014-06-18 | 东北石油大学 | Novel high-temperature resistant inorganic particle-gel compound double-liquid blocking agent and blocking method thereof |
| CN103865510A (en) * | 2014-03-10 | 2014-06-18 | 东北石油大学 | Thermal-recovery injection well gel single-liquid modifying and flooding agent and modifying and flooding method thereof |
| CN103865504A (en) * | 2014-03-10 | 2014-06-18 | 东北石油大学 | Gel double-solution plugging regulating agent of steam injection well for thermal recovery and plugging regulating method using gel double-solution plugging regulating agent |
| CN106543021A (en) * | 2015-09-17 | 2017-03-29 | 中国石油化工股份有限公司 | Amphoteric ion copolymer cationic monomer and preparation method thereof and amphoteric ion copolymer and its preparation method and application |
| CN105754565B (en) * | 2016-03-23 | 2019-03-15 | 重庆科技学院 | A kind of organic micro-spheres and inorganic silicate Compositional type heavy oil thermal recovery fleeing proof agent and preparation method thereof |
| CN105754565A (en) * | 2016-03-23 | 2016-07-13 | 重庆科技学院 | Organic microsphere and inorganic silicate compounded type channeling sealing agent for thermal extraction of heavy oil and preparation method of channeling sealing agent |
| CN107366519A (en) * | 2017-07-25 | 2017-11-21 | 中国石油天然气股份有限公司 | A kind of fine profile control method of chemistry |
| CN109868126A (en) * | 2017-12-01 | 2019-06-11 | 中国石油天然气股份有限公司 | A kind of water shutoff agent and its preparation method and application |
| CN109868126B (en) * | 2017-12-01 | 2021-09-28 | 中国石油天然气股份有限公司 | Water plugging agent and preparation method and application thereof |
| CN111518529A (en) * | 2019-02-02 | 2020-08-11 | 中国石油天然气股份有限公司 | Inorganic gel type profile control agent and profile control method |
| CN111518529B (en) * | 2019-02-02 | 2022-08-30 | 中国石油天然气股份有限公司 | Inorganic gel type profile control agent and profile control method |
| CN115806808A (en) * | 2021-09-14 | 2023-03-17 | 中国石油化工股份有限公司 | Bridging leakage blocking method and application thereof |
| CN116445143A (en) * | 2023-04-27 | 2023-07-18 | 中国石油大学(华东) | Single-liquid plugging system and preparation method thereof |
| CN116445143B (en) * | 2023-04-27 | 2024-04-26 | 中国石油大学(华东) | Single-liquid plugging system and preparation method thereof |
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| Publication number | Publication date |
|---|---|
| CN1055329C (en) | 2000-08-09 |
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