CN103865510A - Thermal-recovery injection well gel single-liquid modifying and flooding agent and modifying and flooding method thereof - Google Patents
Thermal-recovery injection well gel single-liquid modifying and flooding agent and modifying and flooding method thereof Download PDFInfo
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- CN103865510A CN103865510A CN201410084960.0A CN201410084960A CN103865510A CN 103865510 A CN103865510 A CN 103865510A CN 201410084960 A CN201410084960 A CN 201410084960A CN 103865510 A CN103865510 A CN 103865510A
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- resorcinol
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- 238000002347 injection Methods 0.000 title claims abstract description 29
- 239000007924 injection Substances 0.000 title claims abstract description 29
- 239000007788 liquid Substances 0.000 title claims abstract description 21
- 238000011084 recovery Methods 0.000 title claims abstract description 21
- 238000000034 method Methods 0.000 title claims abstract description 13
- 239000003795 chemical substances by application Substances 0.000 title claims abstract description 8
- GHMLBKRAJCXXBS-UHFFFAOYSA-N resorcinol Chemical compound OC1=CC=CC(O)=C1 GHMLBKRAJCXXBS-UHFFFAOYSA-N 0.000 claims abstract description 36
- 239000000243 solution Substances 0.000 claims abstract description 31
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims abstract description 18
- 229910052708 sodium Inorganic materials 0.000 claims abstract description 18
- 239000011734 sodium Substances 0.000 claims abstract description 18
- WSFSSNUMVMOOMR-NJFSPNSNSA-N methanone Chemical compound O=[14CH2] WSFSSNUMVMOOMR-NJFSPNSNSA-N 0.000 claims abstract description 3
- WSFSSNUMVMOOMR-UHFFFAOYSA-N Formaldehyde Chemical compound O=C WSFSSNUMVMOOMR-UHFFFAOYSA-N 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 20
- 238000012546 transfer Methods 0.000 claims description 16
- 239000002253 acid Substances 0.000 claims description 15
- 239000003864 humus Substances 0.000 claims description 15
- 125000000449 nitro group Chemical group [O-][N+](*)=O 0.000 claims description 15
- 238000003756 stirring Methods 0.000 claims description 15
- 238000002360 preparation method Methods 0.000 claims description 11
- 238000010793 Steam injection (oil industry) Methods 0.000 claims description 9
- 230000007935 neutral effect Effects 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 6
- 238000007254 oxidation reaction Methods 0.000 claims description 6
- 230000015572 biosynthetic process Effects 0.000 claims description 5
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 229920002401 polyacrylamide Polymers 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 230000003750 conditioning effect Effects 0.000 claims description 3
- 238000004090 dissolution Methods 0.000 claims description 3
- 230000008961 swelling Effects 0.000 claims description 3
- 239000008398 formation water Substances 0.000 abstract 1
- 238000005516 engineering process Methods 0.000 description 5
- 238000010795 Steam Flooding Methods 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000012530 fluid Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 150000003839 salts Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000000084 colloidal system Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000693 micelle Substances 0.000 description 1
- 238000013508 migration Methods 0.000 description 1
- 230000005012 migration Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229920003023 plastic Polymers 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 238000010408 sweeping 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
- C09K8/592—Compositions used in combination with generated heat, e.g. by steam injection
-
- 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
-
- 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
- E21B33/00—Sealing or packing boreholes or wells
- E21B33/10—Sealing or packing boreholes or wells in the borehole
- E21B33/13—Methods or devices for cementing, for plugging holes, crevices or the like
- E21B33/138—Plastering the borehole wall; Injecting into the formation
-
- 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
- E21B43/24—Enhanced recovery methods for obtaining hydrocarbons using heat, e.g. steam injection
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- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Mining & Mineral Resources (AREA)
- Geology (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Geochemistry & Mineralogy (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Medicinal Preparation (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
Abstract
The invention relates to a thermal-recovery injection well gel single-liquid modifying and flooding agent and a modifying and flooding method thereof. The thermal-recovery injection well gel single-liquid modifying and flooding agent is a black brown solution formed by dissolving and mixing 8wt%-10wt% (in percent by weight) of sodium nitrohumate, 2.1wt% of formaldehyde, 2.5wt%-2.75wt% of resorcinol and 0.015wt%-0.035wt% of HPAM (hydrolyzed polyacryamide) under normal temperature in formation water, wherein the sodium nitrohumate is industrial sodium nitrohumate. The thermal-recovery injection well gel single-liquid modifying and flooding agent disclosed by the invention adopts a single-liquid method injection process, is simple to construct and prepare, capable of sufficiently reacting underground, and high in effective utilization rate.
Description
One, technical field:
What the present invention relates to is the amendment using in oilfield chemistry water plugging and profiling technology in petroleum engineering, and what be specifically related to is a kind of thermal recovery Injection Well gel list liquid adjusting driving agnet and transfer drive method thereof.
Two, background technology:
Current domestic heavy crude reservoir generally adopts steam flood to improve recovery ratio, along with exploitation enters the middle and later periods, easily producing production fluid water ratio raises, shake out, the problems such as lifting difficulty, in this case, improve displacing medium and in-place oil mobility ratio, improve sweeping oily efficiency oneself becoming the gordian technique of this type of oil reservoir development of displacing medium.At present, polymer flooding has been widely used in conventional water-drive field.And for the steam flood heavy crude reservoir of high temperature and high salt, high temperature resistant Application of weak gel profile technology has to be controlled more efficiently water and sweeps capable.
High temperature resistant Application of weak gel profile technology, both can realize oil reservoir deep profile controlling, also can realize polymer flooding function, under the harsh geologic condition of high temperature and high salt oil deposit, good stability, there is certain flowing, be conducive to, to earth formation deep migration, reach the object of deep profile controlling, also there is certain displacement effect, effectively solve steam entry profile problem of non-uniform in plane, improve steam utilization.
Three, summary of the invention:
The object of this invention is to provide a kind of thermal recovery Injection Well gel list liquid adjusting driving agnet, another object of the present invention is to provide the transfer drive method of this thermal recovery Injection Well gel list liquid adjusting driving agnet, and it is for solving the uneven problem of high-temperature oil reservoir steam entry profile.
The technical solution adopted for the present invention to solve the technical problems is: this thermal recovery Injection Well gel list liquid adjusting driving agnet is in local water, to dissolve the dark brown solution being mixed to form at normal temperatures by nitro humus acid sodium, formaldehyde, Resorcinol, HPAM; Wherein each component is respectively by weight: nitro humus acid sodium 8wt% ~ 10wt%, formaldehyde 2.1wt%, Resorcinol 2.5wt% ~ 2.75wt%, HPAM0.015wt% ~ 0.035wt%; Nitro humus acid sodium is industrial nitro humus acid sodium.
In such scheme, the preparation method of thermal recovery Injection Well gel list liquid adjusting driving agnet is:
One,, first by fully soluble in water 8wt% ~ 10wt% nitro humus acid sodium by weight, regulator solution pH value, to neutral, adds 2.1wt% formaldehyde by weight, under sealed state, is stirred to uniform dissolution;
Two, weigh 0.015wt% ~ 0.035wt%HPAM by weight with electronic analytical balance soluble in water, under normal temperature, be stirred to fully swelling to be less than the speed of 100r/min, leave standstill to air entrapment and disappear, weigh 2.5wt% ~ 2.75wt% Resorcinol by weight, it is fully dissolved in HPAM solution, stir with the rotating speed that is less than 100r/min, after dissolving, drop into immediately lower step and use, avoid Resorcinol oxidation; Two kinds of solution are mixed, be placed in reaction at 200 ℃ of simulated formation temperature and make high temperature resistant gel.
The transfer drive method of above-mentioned thermal recovery Injection Well gel list liquid adjusting driving agnet:
One,, before transfer drive operation, with clear water cleaning steam injection well, reduce pit shaft and surrounding temperature;
Two, preparation adjusting driving agnet solution: first by soluble in water 8wt% ~ 10wt% nitro humus acid sodium by weight, stirring is fully dissolved it, adds PH conditioning agent, and regulator solution pH value is to neutral, add 2.1wt% formaldehyde by weight, under high rotating speed, stir 30min to evenly, fully dissolve;
Three, 0.015wt% ~ 0.035wt%HPAM is by weight dissolved in the water, under normal temperature, is stirred to fully swellingly to be less than the speed of 100r/min, leave standstill to air entrapment and disappear; In solution, add 2.5wt% ~ 2.75wt% Resorcinol by weight, it is fully dissolved in polyacrylamide solution, stir with the rotating speed that is less than 100r/min, after dissolving, seal and preserve or drop into immediately lower step use, avoid Resorcinol oxidation;
Four, the solution of step 2 preparation is mixed with step 3 obtain solution, stir after 30min, adopt the low row's of forcing down mode to inject steam injection well simultaneously, inject displacement control at 0.2m
3/ min ~ 0.4m
3in/min, injection pressure equals or a little more than steam injection pressure, is less than 80% of formation-parting pressure, and injection length is calculated by transfer drive actual amount.
Five,, after transfer drive operation completes, closing well 3 days, guarantees that adjusting driving agnet fully reacts to gel in stratum.
Beneficial effect:
1, the present invention is to provide a kind of quarternary copolymerized gel profile control agent that is applicable to heavy crude heat extraction vapour and alters improvement, 120 ℃ ~ 280 ℃ equal energy plastics, become adhesive capacity 3000 ~ 6000mPas, become the micelle colloid at least can heatproof 280 ℃, initial viscosity be low, high permeability formation sealing ratiod is greater than to 96%, there is certain fluidity, selective, resistance to erosion, Heat stability is good, can wash away de-plugging for a long time with steam;
2, in the present invention, this gel-like adjusting driving agnet has selectivity, and initial viscosity is low, and injection efficiency is good, and gel has certain fluidity can play displacement effect, reaches the object of deep profile controlling, has follow-up steady oil control outlet capacity;
3, the present invention adopts single-fluid process injection technology, and construction preparation is simple, can fully react at underground medicament, and effective rate of utilization is high.
Four, embodiment:
Embodiment 1:
Preparation thermal recovery Injection Well gel list liquid adjusting driving agnet,
One,, first by fully soluble in water 8wt% nitro humus acid sodium by weight, regulator solution pH value, to neutral, adds 2.1wt% formaldehyde by weight, under sealed state, is stirred to uniform dissolution;
Two, weigh 0.03wt%HPAM by weight with electronic analytical balance soluble in water, under normal temperature, be stirred to fully swelling to be less than the speed of 100r/min, leave standstill to air entrapment and disappear, weigh 2.5wt% Resorcinol by weight, it is fully dissolved in HPAM solution, stir with the rotating speed that is less than 100r/min, after dissolving, drop into immediately lower step and use, avoid Resorcinol oxidation; Two kinds of solution are mixed, be placed in reaction at 200 ℃ of simulated formation temperature and make high temperature resistant gel.
Above-mentioned each weight fraction is the percentage ratio that each component accounts for gross weight, lower same.
The transfer drive method of thermal recovery Injection Well gel list liquid adjusting driving agnet prepared by the present embodiment,
One,, before transfer drive operation, with clear water cleaning steam injection well, reduce pit shaft and surrounding temperature;
Two, preparation adjusting driving agnet solution: first by soluble in water 8wt% nitro humus acid sodium by weight, stirring is fully dissolved it, adds PH conditioning agent, and regulator solution pH value is to neutral, add 2.1wt% formaldehyde by weight, under high rotating speed, stir 30min to evenly, fully dissolve;
Three, 0.03wt%HPAM is by weight dissolved in the water, under normal temperature, is stirred to fully swellingly to be less than the speed of 100r/min, leave standstill to air entrapment and disappear; In solution, add 2.5wt% Resorcinol by weight, it is fully dissolved in polyacrylamide solution, stir with the rotating speed that is less than 100r/min, after dissolving, seal and preserve or drop into immediately lower step use, avoid Resorcinol oxidation;
Four, the solution of step 2 preparation is mixed with step 3 obtain solution, stir after 30min, adopt the low row's of forcing down mode to inject steam injection well simultaneously, inject displacement control at 0.2m
3/ min ~ 0.4m
3in/min, injection pressure equals or a little more than steam injection pressure, is less than 80% of formation-parting pressure, and injection length is calculated by transfer drive actual amount.
Five,, after transfer drive operation completes, closing well 3 days, guarantees that adjusting driving agnet fully reacts to gel in stratum.
Embodiment 2:
Preparation thermal recovery Injection Well gel list liquid adjusting driving agnet,
In the present embodiment, nitro humus acid sodium is by weight 8wt%, and formaldehyde is 2.1wt%, and Resorcinol is 2.75wt%, HPAM(polyacrylamide) be 0.03wt%, other are identical with embodiment 1.The present embodiment records through experiment: system gelation time 18 hours, become adhesive capacity 3189 mPas, and sealing ratiod is greater than 95%.
Claims (3)
1. a thermal recovery Injection Well gel list liquid adjusting driving agnet, is characterized in that: this thermal recovery Injection Well gel list liquid adjusting driving agnet is in local water, to dissolve the dark brown solution being mixed to form at normal temperatures by nitro humus acid sodium, formaldehyde, Resorcinol, HPAM; Wherein each component is respectively by weight: nitro humus acid sodium 8wt% ~ 10wt%, formaldehyde 2.1wt%, Resorcinol 2.5wt% ~ 2.75wt%, HPAM0.015wt% ~ 0.035wt%; Nitro humus acid sodium is industrial nitro humus acid sodium.
2. thermal recovery Injection Well gel list liquid adjusting driving agnet according to claim 1, is characterized in that: the preparation method of described thermal recovery Injection Well gel list liquid adjusting driving agnet is:
One,, first by fully soluble in water 8wt% ~ 10wt% nitro humus acid sodium by weight, regulator solution pH value, to neutral, adds 2.1wt% formaldehyde by weight, under sealed state, is stirred to uniform dissolution;
Two, weigh 0.015wt% ~ 0.035wt%HPAM by weight with electronic analytical balance soluble in water, under normal temperature, be stirred to fully swelling to be less than the speed of 100r/min, leave standstill to air entrapment and disappear, weigh 2.5wt% ~ 2.75wt% Resorcinol by weight, it is fully dissolved in HPAM solution, stir with the rotating speed that is less than 100r/min, after dissolving, drop into immediately lower step and use, avoid Resorcinol oxidation; Two kinds of solution are mixed, be placed in reaction at 200 ℃ of simulated formation temperature and make high temperature resistant gel.
3. a transfer drive method for thermal recovery Injection Well gel list liquid adjusting driving agnet claimed in claim 2, is characterized in that: the transfer drive method of this thermal recovery Injection Well gel list liquid adjusting driving agnet:
One,, before transfer drive operation, with clear water cleaning steam injection well, reduce pit shaft and surrounding temperature;
Two, preparation adjusting driving agnet solution: first by soluble in water 8wt% ~ 10wt% nitro humus acid sodium by weight, stirring is fully dissolved it, adds PH conditioning agent, and regulator solution pH value is to neutral, add 2.1wt% formaldehyde by weight, under high rotating speed, stir 30min to evenly, fully dissolve;
Three, 0.015wt% ~ 0.035wt%HPAM is by weight dissolved in the water, under normal temperature, is stirred to fully swellingly to be less than the speed of 100r/min, leave standstill to air entrapment and disappear; In solution, add 2.5wt% ~ 2.75wt% Resorcinol by weight, it is fully dissolved in polyacrylamide solution, stir with the rotating speed that is less than 100r/min, after dissolving, seal and preserve or drop into immediately lower step use, avoid Resorcinol oxidation;
Four, the solution of step 2 preparation is mixed with step 3 obtain solution, stir after 30min, adopt the low row's of forcing down mode to inject steam injection well simultaneously, inject displacement control at 0.2m
3/ min ~ 0.4m
3in/min, injection pressure equals or a little more than steam injection pressure, is less than 80% of formation-parting pressure, and injection length is calculated by transfer drive actual amount;
?five,, after transfer drive operation completes, closing well 3 days, guarantees that adjusting driving agnet fully reacts to gel in stratum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084960.0A CN103865510A (en) | 2014-03-10 | 2014-03-10 | Thermal-recovery injection well gel single-liquid modifying and flooding agent and modifying and flooding method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410084960.0A CN103865510A (en) | 2014-03-10 | 2014-03-10 | Thermal-recovery injection well gel single-liquid modifying and flooding agent and modifying and flooding method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN103865510A true CN103865510A (en) | 2014-06-18 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410084960.0A Pending CN103865510A (en) | 2014-03-10 | 2014-03-10 | Thermal-recovery injection well gel single-liquid modifying and flooding agent and modifying and flooding method thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860093A (en) * | 2016-04-07 | 2016-08-17 | 中国石油大学(华东) | Sodium humate plugging agent used for high temperature, high salinity and low permeability oil reservoir and preparation method thereof |
| CN110041904A (en) * | 2019-04-23 | 2019-07-23 | 中国海洋石油集团有限公司 | Humic acid and alkylamine Compositional type heavy crude thinner and the preparation method and application thereof |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105860093A (en) * | 2016-04-07 | 2016-08-17 | 中国石油大学(华东) | Sodium humate plugging agent used for high temperature, high salinity and low permeability oil reservoir and preparation method thereof |
| CN110041904A (en) * | 2019-04-23 | 2019-07-23 | 中国海洋石油集团有限公司 | Humic acid and alkylamine Compositional type heavy crude thinner and the preparation method and application thereof |
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Application publication date: 20140618 |