CN111690395B - Polymer viscosity loss inhibitor, and preparation method, use method and application thereof - Google Patents
Polymer viscosity loss inhibitor, and preparation method, use method and application thereof Download PDFInfo
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- CN111690395B CN111690395B CN202010727364.5A CN202010727364A CN111690395B CN 111690395 B CN111690395 B CN 111690395B CN 202010727364 A CN202010727364 A CN 202010727364A CN 111690395 B CN111690395 B CN 111690395B
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- inhibitor
- polymer
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- medicament
- water
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- 229920000642 polymer Polymers 0.000 title claims abstract description 55
- 239000003112 inhibitor Substances 0.000 title claims abstract description 41
- 238000000034 method Methods 0.000 title claims abstract description 13
- 238000002360 preparation method Methods 0.000 title abstract description 7
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 31
- 238000002156 mixing Methods 0.000 claims abstract description 8
- 230000008569 process Effects 0.000 claims abstract description 6
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims abstract description 5
- 229910052804 chromium Inorganic materials 0.000 claims abstract description 5
- 239000011651 chromium Substances 0.000 claims abstract description 5
- 238000010790 dilution Methods 0.000 claims abstract description 5
- 239000012895 dilution Substances 0.000 claims abstract description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 25
- 239000003814 drug Substances 0.000 claims description 19
- 229910000402 monopotassium phosphate Inorganic materials 0.000 claims description 9
- 235000019796 monopotassium phosphate Nutrition 0.000 claims description 9
- VWDWKYIASSYTQR-UHFFFAOYSA-N sodium nitrate Chemical group [Na+].[O-][N+]([O-])=O VWDWKYIASSYTQR-UHFFFAOYSA-N 0.000 claims description 8
- 229910002651 NO3 Inorganic materials 0.000 claims description 6
- MEFBJEMVZONFCJ-UHFFFAOYSA-N molybdate Chemical group [O-][Mo]([O-])(=O)=O MEFBJEMVZONFCJ-UHFFFAOYSA-N 0.000 claims description 6
- NHNBFGGVMKEFGY-UHFFFAOYSA-N nitrate group Chemical group [N+](=O)([O-])[O-] NHNBFGGVMKEFGY-UHFFFAOYSA-N 0.000 claims description 6
- 229910019142 PO4 Inorganic materials 0.000 claims description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 5
- 239000010452 phosphate Substances 0.000 claims description 5
- GNSKLFRGEWLPPA-UHFFFAOYSA-M potassium dihydrogen phosphate Chemical compound [K+].OP(O)([O-])=O GNSKLFRGEWLPPA-UHFFFAOYSA-M 0.000 claims description 5
- LWIHDJKSTIGBAC-UHFFFAOYSA-K potassium phosphate Substances [K+].[K+].[K+].[O-]P([O-])([O-])=O LWIHDJKSTIGBAC-UHFFFAOYSA-K 0.000 claims description 5
- PJNZPQUBCPKICU-UHFFFAOYSA-N phosphoric acid;potassium Chemical group [K].OP(O)(O)=O PJNZPQUBCPKICU-UHFFFAOYSA-N 0.000 claims description 4
- NPNNCIRCAHVPAZ-UHFFFAOYSA-N sodium molybdate heptahydrate Chemical group O.O.O.O.O.O.O.[Na+].[Na+].[O-][Mo]([O-])(=O)=O NPNNCIRCAHVPAZ-UHFFFAOYSA-N 0.000 claims description 4
- 235000010344 sodium nitrate Nutrition 0.000 claims description 4
- 239000004317 sodium nitrate Substances 0.000 claims description 4
- 238000013329 compounding Methods 0.000 claims description 2
- 239000007787 solid Substances 0.000 claims description 2
- 230000002401 inhibitory effect Effects 0.000 claims 1
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims 1
- 239000003921 oil Substances 0.000 abstract description 10
- 238000002347 injection Methods 0.000 abstract description 7
- 239000007924 injection Substances 0.000 abstract description 7
- 239000010779 crude oil Substances 0.000 abstract description 4
- 238000011084 recovery Methods 0.000 abstract description 4
- 239000010865 sewage Substances 0.000 abstract description 4
- 125000002467 phosphate group Chemical class [H]OP(=O)(O[H])O[*] 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 6
- 239000000126 substance Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 230000009467 reduction Effects 0.000 description 4
- 238000006073 displacement reaction Methods 0.000 description 3
- 239000012530 fluid Substances 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000009395 breeding Methods 0.000 description 1
- 230000001488 breeding effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 238000005303 weighing Methods 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
- C09K8/588—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids characterised by the use of specific polymers
-
- 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
- C09K8/58—Compositions for enhanced recovery methods for obtaining hydrocarbons, i.e. for improving the mobility of the oil, e.g. displacing fluids
-
- 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
- C09K8/60—Compositions for stimulating production by acting on the underground formation
- C09K8/84—Compositions based on water or polar solvents
- C09K8/845—Compositions based on water or polar solvents containing inorganic compounds
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B43/00—Methods or apparatus for obtaining oil, gas, water, soluble or meltable materials or a slurry of minerals from wells
- E21B43/16—Enhanced recovery methods for obtaining hydrocarbons
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Physics & Mathematics (AREA)
- Geochemistry & Mineralogy (AREA)
- Inorganic Chemistry (AREA)
- Fluid Mechanics (AREA)
- Environmental & Geological Engineering (AREA)
- Activated Sludge Processes (AREA)
Abstract
The invention discloses a polymer viscosity loss inhibitor, a preparation method, a use method and application thereof, wherein the polymer viscosity loss inhibitor comprises the following components: a first agent, a second agent and a third agent, wherein the first agent comprises chromium tetroxide; the second agent comprises [ Cu (NH)3）4]SO4(ii) a The third agent comprising a phosphate salt; and the application of the polymer viscosity loss inhibitor in the polymer injection-blending process of the oil field pollution-blending sewage dilution for controlling the polymer viscosity loss; the problem that the crude oil recovery rate is influenced due to polymer viscosity loss in the existing polymer injection allocation process with oil field pollution and sewage dilution is solved.
Description
Technical Field
The invention relates to a polymer viscosity loss inhibitor for controlling polymer viscosity loss in an oilfield polymer injection preparation process.
Background
The polymer flooding is to add a small amount of water-soluble high molecular polymer into the injected water, improve the fluidity ratio and increase the sweep coefficient by increasing the viscosity of the water phase and reducing the permeability of the water phase, thereby increasing the oil recovery rate of crude oil. Macroscopically, it is mainly by increasing the viscosity of the displacement fluid and reducing the mobility ratio of the displacement fluid and the displaced fluid, thereby enlarging the swept volume. In the microcosmic aspect, the polymer generates a stretching effect on an oil film or oil drops in the flowing process due to the inherent viscoelasticity of the polymer, so that the carrying force is increased, and the microcosmic oil washing efficiency is improved.
During the preparation and injection of the polymer solution, the polymer solution is degraded by mechanical shear, chemical and other reasons, so that the viscosity of the polymer solution is reduced in the production process, which is called the viscosity loss of the polymer.
The viscosity of the polymer solution is used as an important measurement standard of the oil displacement effect of the polymer, and the oil-water fluidity ratio and swept volume can be influenced by the viscosity value, so that the recovery rate of crude oil is influenced. It is important to avoid viscosity loss of the polymer solution because it is necessary to stabilize or increase the viscosity of the polymer solution in order to ensure the mining effect.
Disclosure of Invention
In view of the above, the invention provides a polymer viscosity loss inhibitor, which solves the problem that the crude oil recovery rate is affected due to polymer viscosity loss in the existing polymer injection allocation process of oil field pollution and sewage dilution.
In a first aspect, the present invention provides a polymer damage inhibitor, comprising:
a first agent, a second agent, and a third agent,
the first agent comprising chromium tetroxide;
the second agent comprises [ Cu (NH)3)4]SO4；
The third agent, comprising phosphate.
Further, the first medicament, further comprising an inhibitor and water;
the inhibitor is a nitrate.
Further, the nitrate is sodium nitrate;
further, the first medicament consists of 20 percent of chromium tetroxide, 5 percent of nitrate and the balance of water by mass percentage.
Further, the second medicament, further comprising an inhibitor and water;
the inhibitor is a molybdate.
Further, the molybdate is sodium molybdate heptahydrate.
Further, the second medicament is calculated by 80 mass percent [ Cu (NH)3)4]SO41% molybdate and the balance water.
Further, the phosphate is monopotassium phosphate.
Further, the third agent, further comprising an inhibitor and water;
the inhibitor is potassium dihydrogen phosphate.
Further, the third medicament consists of 50% of phosphate, 1% of monopotassium phosphate and the balance of water in percentage by mass.
Further, the mass ratio of the first medicament, the second medicament and the third medicament is 1: 8: 1.
in a second aspect, a method of preparing a polymer pick-up inhibitor, comprising:
the polymer pick-up inhibitor according to the first aspect,
and adding the solid components in the first medicament, the second medicament and the third medicament into the water and uniformly mixing.
In a third aspect, a method of using a polymer pick-up inhibitor, comprising adding amounts of:
the addition amount is 25-100 ppm.
In a fourth aspect, the use of a polymer viscosity loss inhibitor for controlling polymer viscosity loss in a polymer injection compounding process for oilfield fouling drainage.
The invention has the following beneficial effects:
the polymer viscosity loss inhibitor disclosed by the invention can be used on site, the average viscosity loss rate of a well mouth can be reduced by 1.25% compared with that before dosing, and the integral viscosity reduction phenomenon of the well mouth does not occur during dosing, so that the polymer viscosity loss inhibitor disclosed by the invention can be used for better solving the polymer viscosity reduction problem occurring in a polymer injection preparation process of oil field pollution and dilution.
Detailed Description
The present invention will be described below based on examples, but it should be noted that the present invention is not limited to these examples. In the following detailed description of the present invention, certain specific details are set forth. However, the present invention may be fully understood by those skilled in the art for those parts not described in detail.
Also, unless the context clearly requires otherwise, throughout the description and the claims, the words "comprise", "comprising", and the like are to be construed in an inclusive sense as opposed to an exclusive or exhaustive sense; that is, the meaning of "includes but is not limited to".
Examples
The composition and content of the polymer sticking loss inhibitor of this example:
a first agent: the water-based paint is prepared from 20% of chromic tetroxide, 5% of sodium nitrate and the balance of water by mass percent.
A second agent: calculated according to mass percent, from 80% [ Cu (NH)3)4]SO41% sodium molybdate heptahydrate and the balance of water. Wherein, [ Cu (NH)3)4]SO4Purchased from environmental protection, Guangzhou, China.
A third agent: calculated according to the mass percentage, 50 percent of monopotassium phosphate, 1 percent of monopotassium phosphate and the balance of water.
Preparation of the polymer pick-up inhibitor of this example:
a first agent: adding the weighed chromium tetroxide and sodium nitrate into water according to the proportion, and uniformly mixing;
a second agent: according to the above-mentioned mixing ratio, weighing [ Cu (NH)3)4]SO4Adding sodium molybdate heptahydrate into water, and uniformly mixing;
a third agent: adding the weighed potassium dihydrogen phosphate into water according to the proportion, and uniformly mixing;
the first, second, and third agents were mixed to obtain the polymer adhesion loss inhibitor of the present example.
Examples of the experiments
Performing field test on a polymer injection allocation station in a certain oil field in 2018, 11-2019 and 4 months, wherein the field sewage amount is 1000m per day3The polymer viscosity loss inhibitor of this example was dosed at 50ppm for a 6 month test period. The effects are as follows:
TABLE 1 Change in wellhead viscosity loss after viscosity inhibitor addition
As can be seen from the table 1, before adding the chemicals, the average viscosity loss rate of the well head reaches 21.25%, after adding the chemicals, the average viscosity loss rate is 20.0%, which is reduced by 1.25% compared with that before adding the chemicals, and the overall viscosity reduction phenomenon of the well head does not occur during the adding of the chemicals, which proves that the viscosity inhibitor can better solve the problem of viscosity reduction caused by bacterial breeding.
The above-mentioned embodiments are merely embodiments for expressing the invention, and the description is specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for those skilled in the art, various changes, substitutions of equivalents, improvements and the like can be made without departing from the spirit of the invention, and these are all within the scope of the invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (8)
1. A polymer pick inhibitor comprising:
a first agent, a second agent, and a third agent,
the first agent comprising chromium tetroxide;
the second agent comprises [ Cu (NH)3）4]SO4；
The third agent comprising a phosphate salt;
the first agent, further comprising an inhibitor and water;
the inhibitor is a nitrate;
the second agent, further comprising an inhibitor and water;
the inhibitor is a molybdate;
the third agent, further comprising an inhibitor and water;
the inhibitor is potassium dihydrogen phosphate.
2. The polymer pick inhibitor of claim 1, wherein:
the nitrate is sodium nitrate;
and/or the presence of a gas in the interior of the container,
the first medicament consists of 20 percent of chromic tetroxide, 5 percent of nitrate and the balance of water by mass percentage.
3. The polymer pick inhibitor of claim 2, wherein:
the molybdate is sodium molybdate heptahydrate;
and/or the presence of a gas in the interior of the container,
the second medicament is calculated by the mass percent of 80% [ Cu (NH ]3）4]SO41% of molybdate and the balance of water;
and/or the presence of a gas in the interior of the container,
the phosphate is potassium dihydrogen phosphate.
4. The polymer pick inhibitor of any of claim 3, wherein:
the third agent consists of 50% of phosphate, 1% of monopotassium phosphate and the balance of water by mass percentage.
5. The polymer pick inhibitor of claim 4, wherein:
the mass ratio of the first medicament to the second medicament to the third medicament is 1: 8: 1.
6. a method of preparing a polymer pick-up inhibitor, comprising:
the polymer damage-inhibiting agent according to any one of claims 2 to 5,
and adding the solid components in the first medicament, the second medicament and the third medicament into the water and uniformly mixing.
7. A method of using the polymer pick inhibitor of claim 5, wherein:
the addition amount of the polymer viscosity loss inhibitor is 25-100 ppm.
8. Use of the polymer viscosity loss inhibitor of claim 5 in a polymer injection-compounding process for oilfield fouling release dilution to control polymer viscosity loss.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727364.5A CN111690395B (en) | 2020-07-27 | 2020-07-27 | Polymer viscosity loss inhibitor, and preparation method, use method and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010727364.5A CN111690395B (en) | 2020-07-27 | 2020-07-27 | Polymer viscosity loss inhibitor, and preparation method, use method and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111690395A CN111690395A (en) | 2020-09-22 |
| CN111690395B true CN111690395B (en) | 2022-04-26 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010727364.5A Active CN111690395B (en) | 2020-07-27 | 2020-07-27 | Polymer viscosity loss inhibitor, and preparation method, use method and application thereof |
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| Country | Link |
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| CN (1) | CN111690395B (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899818A (en) * | 1988-05-23 | 1990-02-13 | Mobil Oil Corporation | Method to improve use of polymers for injectivity profile control in enhanced oil recovery |
| CN101875839A (en) * | 2009-04-30 | 2010-11-03 | 中国石油天然气股份有限公司 | Multifunctional preparation for controlling biological corrosion and blockage of oil field production system |
| CN110724513A (en) * | 2019-10-17 | 2020-01-24 | 大庆石油管理局有限公司 | Polymer solution viscosity stabilizer for oil displacement and preparation method thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8282266B2 (en) * | 2007-06-27 | 2012-10-09 | H R D Corporation | System and process for inhibitor injection |
-
2020
- 2020-07-27 CN CN202010727364.5A patent/CN111690395B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4899818A (en) * | 1988-05-23 | 1990-02-13 | Mobil Oil Corporation | Method to improve use of polymers for injectivity profile control in enhanced oil recovery |
| CN101875839A (en) * | 2009-04-30 | 2010-11-03 | 中国石油天然气股份有限公司 | Multifunctional preparation for controlling biological corrosion and blockage of oil field production system |
| CN110724513A (en) * | 2019-10-17 | 2020-01-24 | 大庆石油管理局有限公司 | Polymer solution viscosity stabilizer for oil displacement and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 聚合物溶液粘度不稳定因素分析与治理;文凤余等;《胜利油田职工大学学报》;20060830;第20卷(第04期);第53-55页 * |
| 铁离子对配制聚合物溶液粘度的影响及其去除研究;王作华等;《工业用水与废水》;20170228;第48卷(第01期);第23-27页 * |
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| CN111690395A (en) | 2020-09-22 |
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