CN104312559A - Silicate plugging agent for water plugging in oilfields - Google Patents
Silicate plugging agent for water plugging in oilfields Download PDFInfo
- Publication number
- CN104312559A CN104312559A CN201410649172.1A CN201410649172A CN104312559A CN 104312559 A CN104312559 A CN 104312559A CN 201410649172 A CN201410649172 A CN 201410649172A CN 104312559 A CN104312559 A CN 104312559A
- Authority
- CN
- China
- Prior art keywords
- water
- agent
- silicate
- plugging
- blocking agent
- 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.)
- Pending
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 51
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 25
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 title claims abstract description 24
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 24
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 13
- 239000006004 Quartz sand Substances 0.000 claims abstract description 11
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 11
- 239000002994 raw material Substances 0.000 claims abstract description 10
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical class [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 10
- 229920003169 water-soluble polymer Polymers 0.000 claims abstract description 9
- 239000003002 pH adjusting agent Substances 0.000 claims abstract description 7
- 239000002981 blocking agent Substances 0.000 claims description 32
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 claims description 16
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 9
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 9
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 6
- LWIHDJKSTIGBAC-UHFFFAOYSA-K tripotassium phosphate Chemical compound [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 6
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 3
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 3
- 229910000404 tripotassium phosphate Inorganic materials 0.000 claims description 3
- 235000019798 tripotassium phosphate Nutrition 0.000 claims description 3
- 238000002347 injection Methods 0.000 abstract description 8
- 239000007924 injection Substances 0.000 abstract description 8
- 230000004048 modification Effects 0.000 abstract description 4
- 238000012986 modification Methods 0.000 abstract description 4
- 230000007547 defect Effects 0.000 abstract 2
- 239000000203 mixture Substances 0.000 description 6
- 239000003129 oil well Substances 0.000 description 5
- 239000000499 gel Substances 0.000 description 4
- 150000003839 salts Chemical class 0.000 description 4
- 229920000642 polymer Polymers 0.000 description 3
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- 230000015556 catabolic process Effects 0.000 description 2
- 238000006731 degradation reaction Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 235000012239 silicon dioxide Nutrition 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 1
- 230000002599 biostatic effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 229910052804 chromium Inorganic materials 0.000 description 1
- 239000011651 chromium Substances 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 229920006037 cross link polymer Polymers 0.000 description 1
- 238000004090 dissolution Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000008398 formation water Substances 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 229920000592 inorganic polymer Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000002906 microbiologic effect Effects 0.000 description 1
- 239000002332 oil field water Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 150000004760 silicates Chemical class 0.000 description 1
- RMAQACBXLXPBSY-UHFFFAOYSA-N silicic acid Chemical compound O[Si](O)(O)O RMAQACBXLXPBSY-UHFFFAOYSA-N 0.000 description 1
- 239000000377 silicon dioxide Substances 0.000 description 1
- 229960001866 silicon dioxide Drugs 0.000 description 1
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
Abstract
The invention provides a silicate plugging agent for water plugging in oilfields. The silicate plugging agent is characterized by being prepared by the following raw materials in percentage by weight: 35-45 % of quartz sand, 10-20 % of modified sodium silicate, 10-20 % of a pH adjuster and 20-40 % of a gelatinizing agent. The gelatinizing agent is obtained by mixing a polyacrylamide water-soluble polymer and ethanol. The silicate plugging agent for water plugging in the oilfields, provided by the invention, has the following advantages: a high-strength and high temperature resistant inorganic multifunctional profile modification system is formed; defects of poor temperature-tolerance performance and low plugging strength of an organic profile modification system are overcome; defects that the conventional inorganic profile modification systems are tightly and closely plugged are made up through the special technical scheme of the system; the water injection profile is adjusted; the swept volume is enlarged; the water injection efficiency is increased. The various properties of the silicate plugging agent for water plugging in the oilfields, provided by the invention, are tested; the test results are as follows: the use temperature is 90-110 DEG C, the water plugging efficiency is higher than 92.0 % and the breakthrough pressure is 1.5-2.0 MPa/m.
Description
Technical field
The present invention relates to a kind of silicate blocking agent for Water in Water Shutoff in Oil Field, belong to oilfield chemistry articles for use field.
Background technology
The inhomogeneity on stratum makes injection water charge into oil well along most permeable zone; Inject water and the inhomogeneity that improve stratum is washed away for a long time to most permeable zone, thus make that injection water is easier charges into oil well along most permeable zone.In order to improve oil recovery factor, must these most permeable zones of shutoff.Profile control and water plugging is the method for the shutoff most permeable zone that oil field is commonly used.During from water injection well shutoff most permeable zone, the intake profile of adjustable water filling interval, is called Profile Control in Injection Well; During from oil well plugging most permeable zone, oil well can be reduced and produce water, be called oilwell water shutoff.Blocking agent can be divided into organic blocking agent and inorganic blocking agent, wherein organic blocking agent is as chromium gel, inorganic blocking agent as silicic acid gel, clay and cement, but, at high temperature (>90 DEG C), high salt (salinity >8.0 × 10
4mgL
-1) etc. under mal-condition most of organic blocking agent can not be suitable for, if HPAM etc. is due to can only at temperature <95 DEG C, salinity <3.0 × 10
4mgL
-1reservoir condition under apply, and gelation by various factors impact and to sensitivities such as salinity, temperature, shearing and biological high temperature degradations, the performance of blocking agent is reduced, and inorganics and inorganic polymer then show the one side of its excellent performance.
The most of oil field of current China enters development late stage, water plugging and profiling technology has become the important technique measure of domestic and international high water cut oil field improving ecology effect, producing formation is more and more darker simultaneously, temperature is more and more higher, formation water salinity is also more and more higher, therefore study heatproof, salt tolerant blocking agent more and more important.Mostly the cross-linked polymer gel blocking agent of existing relative heatproof, anti-salt is to improve on middle low temperature gel plugging agent basis, and most blocking agent is only applicable to temperature 120 DEG C, salinity 8 × 10
4mgL
-1following oil reservoir, and the feature of inorganic blocking agent to be intensity large, good stability comprises to shear stable (can shear degradation unlike polymers soln), to thermally-stabilised (can be used for any high-temperature stratum), chemically stable (being very stable material mostly during Individual existence) and Biostatic (not being subject to microbiological effect) etc.Therefore for high temperature, high salt, deep-well or ultra deep well, the condition such as hypotonic, by the inorganic blocking agent of development of new to address these problems.
Summary of the invention
In order to solve the problem, the invention provides the silicate blocking agent of a kind of applicable high temperature, high salt and deep well oilfield water blockoff, particularly relate to a kind of silicate blocking agent for Water in Water Shutoff in Oil Field.The technical scheme that the present invention can realize is as described below:
For a silicate blocking agent for Water in Water Shutoff in Oil Field, be made up of following raw material, its weight percent is: quartz sand 35 ~ 45%, modified sodium silicate 10 ~ 20%, pH adjusting agent 10 ~ 20%, gelatinizing agent 20% ~ 40%.
As improvement project of the present invention, a kind of silicate blocking agent for Water in Water Shutoff in Oil Field, be made up of following raw material, its weight percent is: quartz sand 40%, modified sodium silicate 15%, pH adjusting agent 15%, gelatinizing agent 30%.
Described pH adjusting agent be in hydrochloric acid, phosphoric acid, Tripotassium phosphate, potassium hydroxide, saleratus, sodium hydroxide any one.Wherein hydrochloric acid, phosphoric acid oxytropism pH regulator, and Tripotassium phosphate, potassium hydroxide, saleratus, sodium hydroxide regulate to alkaline pH.
Described gelatinizing agent is that polyacrylamide water-soluble polymers and ethanol mix, and both mass percents are 20 ~ 30:70 ~ 80.
The massfraction 20% ~ 50% of described ethanol, because polyacrylamide polymer is water-soluble, therefore the concentration of ethanol should not be too high, otherwise polyacrylamide polymer can not dissolve.
Described quartz sand, is SiO
2>=90-99%, Fe
2o
3≤ 0.06-0.02%, other.
The invention has the advantages that: silicate blocking agent provided by the invention defines high strength, high temperature resistance inorganic multifunctional profile control system, overcome the shortcoming that organic profile control system heat-resisting property is poor, plugging strength is low, the process program of system uniqueness compensate for again that Inorganic Profile Modification system is in the past blocked up extremely, stifled shortcoming closely, adjustment water injection profile, expand swept volume, improve water-injection efficiency.This silicate blocking agent is white powder, and modulus is 2.00 ~ 2.20, wherein silicon-dioxide (SiO
2) 49.0 ~ 53.0%, sodium oxide (Na
2o) 24.0 ~ 27.0%, water-insoluble≤0.10%, density 0.50 ~ 0.80g/ml, dissolution rate < 90s, fineness (100 screen residue) < 5%.
Embodiment
Following Application Example is described further it, and the simple replacement or improvement etc. done the present invention those skilled in the art all belong within the technical scheme that the present invention protects.
Embodiment 1:
For a silicate blocking agent for Water in Water Shutoff in Oil Field, be made up of following raw material, its weight percent is: quartz sand 40%, modified sodium silicate 15%, hydrochloric acid 15%, gelatinizing agent 30%.Wherein gelatinizing agent is that polyacrylamide water-soluble polymers and 20% ethanol mix, and both mass percents are 20:80.
Embodiment 2:
For a silicate blocking agent for Water in Water Shutoff in Oil Field, be made up of following raw material, its weight percent is: quartz sand 40%, modified sodium silicate 15%, hydrochloric acid 15%, gelatinizing agent 30%.Wherein gelatinizing agent is that polyacrylamide water-soluble polymers and 30% ethanol mix, and both mass percents are 30:70.
Embodiment 3:
For a silicate blocking agent for Water in Water Shutoff in Oil Field, be made up of following raw material, its weight percent is: quartz sand 35%, modified sodium silicate 20%, hydrochloric acid 10%, gelatinizing agent 35%.Wherein gelatinizing agent is that polyacrylamide water-soluble polymers and 35% ethanol mix, and both mass percents are 20:80.
Embodiment 4:
For a silicate blocking agent for Water in Water Shutoff in Oil Field, be made up of following raw material, its weight percent is: quartz sand 45%, modified sodium silicate 15%, hydrochloric acid 10%, gelatinizing agent 30%.Wherein gelatinizing agent is that polyacrylamide water-soluble polymers and 25% ethanol mix, and both mass percents are 30:70.
Embodiment 5:
For a silicate blocking agent for Water in Water Shutoff in Oil Field, be made up of following raw material, its weight percent is: quartz sand 40%, modified sodium silicate 20%, hydrochloric acid 15%, gelatinizing agent 25%.Wherein gelatinizing agent is that polyacrylamide water-soluble polymers and 20% ethanol mix, and both mass percents are 25:75.
Test the properties of silicate blocking agent of the present invention, its use temperature 90 ~ 110 DEG C, water blockoff efficiency is greater than 92.0%, and breakthrough pressure is 1.5 ~ 2.0MPa/m.
Claims (6)
1. for a silicate blocking agent for Water in Water Shutoff in Oil Field, it is characterized in that, be made up of following raw material, its weight percent is: quartz sand 35 ~ 45%, modified sodium silicate 10 ~ 20%, pH adjusting agent 10 ~ 20%, gelatinizing agent 20% ~ 40%.
2. a kind of silicate blocking agent for Water in Water Shutoff in Oil Field according to claim 1, it is characterized in that, be made up of following raw material, its weight percent is: quartz sand 40%, modified sodium silicate 15%, pH adjusting agent 15%, gelatinizing agent 30%.
3. a kind of silicate blocking agent for Water in Water Shutoff in Oil Field according to claim 1 or 2, is characterized in that, described pH adjusting agent be in hydrochloric acid, phosphoric acid, Tripotassium phosphate, potassium hydroxide, saleratus, sodium hydroxide any one.
4. a kind of silicate blocking agent for Water in Water Shutoff in Oil Field according to claim 1 or 2, is characterized in that, described gelatinizing agent is that polyacrylamide water-soluble polymers and ethanol mix.
5. a kind of silicate blocking agent for Water in Water Shutoff in Oil Field according to claim 4, it is characterized in that, described gelatinizing agent is the massfraction of polyacrylamide water-soluble polymers and ethanol is 20 ~ 30:70 ~ 80.
6., according to the silicate blocking agent for Water in Water Shutoff in Oil Field a kind of described in claim 4, it is characterized in that, the massfraction 20% ~ 50% of described ethanol.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649172.1A CN104312559A (en) | 2014-11-14 | 2014-11-14 | Silicate plugging agent for water plugging in oilfields |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410649172.1A CN104312559A (en) | 2014-11-14 | 2014-11-14 | Silicate plugging agent for water plugging in oilfields |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104312559A true CN104312559A (en) | 2015-01-28 |
Family
ID=52367881
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410649172.1A Pending CN104312559A (en) | 2014-11-14 | 2014-11-14 | Silicate plugging agent for water plugging in oilfields |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104312559A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143477A (en) * | 2019-06-28 | 2020-12-29 | 中国石油化工股份有限公司 | Silicate plugging agent system and application method thereof |
| CN114456783A (en) * | 2022-01-14 | 2022-05-10 | 西南石油大学 | Inorganic-organic composite profile control water shutoff agent and using method thereof |
Citations (5)
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|---|---|---|---|---|
| CN1223288A (en) * | 1998-01-13 | 1999-07-21 | 石家庄建设集团防水防腐公司 | Inorganic impervious leakage-blocking material |
| CN1434093A (en) * | 2003-01-28 | 2003-08-06 | 刘玉军 | Quick leakage-stopping agent |
| CN101880522A (en) * | 2010-06-12 | 2010-11-10 | 中国石油大学(华东) | Novel inorganic-organic ternary composite plugging agent for oil extraction and preparation method |
| CN102516961A (en) * | 2011-11-15 | 2012-06-27 | 中国石油大学(华东) | Organic/inorganic crosslinking system plugging agent applicable to high-temperature oil reservoir |
| CN103740341A (en) * | 2013-12-31 | 2014-04-23 | 东营泰尔石油技术有限公司 | Leaking stoppage pressure-bearing agent |
-
2014
- 2014-11-14 CN CN201410649172.1A patent/CN104312559A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1223288A (en) * | 1998-01-13 | 1999-07-21 | 石家庄建设集团防水防腐公司 | Inorganic impervious leakage-blocking material |
| CN1434093A (en) * | 2003-01-28 | 2003-08-06 | 刘玉军 | Quick leakage-stopping agent |
| CN101880522A (en) * | 2010-06-12 | 2010-11-10 | 中国石油大学(华东) | Novel inorganic-organic ternary composite plugging agent for oil extraction and preparation method |
| CN102516961A (en) * | 2011-11-15 | 2012-06-27 | 中国石油大学(华东) | Organic/inorganic crosslinking system plugging agent applicable to high-temperature oil reservoir |
| CN103740341A (en) * | 2013-12-31 | 2014-04-23 | 东营泰尔石油技术有限公司 | Leaking stoppage pressure-bearing agent |
Non-Patent Citations (1)
| Title |
|---|
| 宋小平: "《石油化学助剂及石油产品制造技术》", 31 October 2011, 科学技术文献出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112143477A (en) * | 2019-06-28 | 2020-12-29 | 中国石油化工股份有限公司 | Silicate plugging agent system and application method thereof |
| CN112143477B (en) * | 2019-06-28 | 2022-09-30 | 中国石油化工股份有限公司 | Silicate plugging agent system and application method thereof |
| CN114456783A (en) * | 2022-01-14 | 2022-05-10 | 西南石油大学 | Inorganic-organic composite profile control water shutoff agent and using method thereof |
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|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20150128 |
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| RJ01 | Rejection of invention patent application after publication |