CN102093876A - Thixotropic gel temporary plugging agent for acidification of oil layer of low-permeability oil field and preparation and application thereof - Google Patents
Thixotropic gel temporary plugging agent for acidification of oil layer of low-permeability oil field and preparation and application thereof Download PDFInfo
- Publication number
- CN102093876A CN102093876A CN2009102421786A CN200910242178A CN102093876A CN 102093876 A CN102093876 A CN 102093876A CN 2009102421786 A CN2009102421786 A CN 2009102421786A CN 200910242178 A CN200910242178 A CN 200910242178A CN 102093876 A CN102093876 A CN 102093876A
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- China
- Prior art keywords
- rosin
- water
- sodium hydroxide
- oil
- polyacrylamide
- 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.)
- Granted
Links
- 230000009974 thixotropic effect Effects 0.000 title claims abstract description 22
- 238000002360 preparation method Methods 0.000 title claims abstract description 8
- 230000020477 pH reduction Effects 0.000 title abstract 2
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims abstract description 75
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 32
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 32
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims abstract description 29
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims abstract description 29
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000007788 liquid Substances 0.000 claims abstract description 22
- 229920002401 polyacrylamide Polymers 0.000 claims abstract description 22
- 239000002253 acid Substances 0.000 claims abstract description 18
- 239000008399 tap water Substances 0.000 claims abstract description 18
- 235000020679 tap water Nutrition 0.000 claims abstract description 18
- 239000012295 chemical reaction liquid Substances 0.000 claims abstract description 15
- 239000003921 oil Substances 0.000 claims description 37
- 235000019198 oils Nutrition 0.000 claims description 37
- 238000010306 acid treatment Methods 0.000 claims description 13
- 230000015572 biosynthetic process Effects 0.000 claims description 13
- 230000035699 permeability Effects 0.000 claims description 12
- 125000000129 anionic group Chemical group 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 230000001737 promoting effect Effects 0.000 claims description 8
- 238000010438 heat treatment Methods 0.000 claims description 7
- 239000003643 water by type Substances 0.000 claims description 6
- 238000000465 moulding Methods 0.000 claims description 5
- 235000019774 Rice Bran oil Nutrition 0.000 claims description 4
- 238000002156 mixing Methods 0.000 claims description 4
- 238000002203 pretreatment Methods 0.000 claims description 4
- 239000008165 rice bran oil Substances 0.000 claims description 4
- 239000003129 oil well Substances 0.000 abstract description 4
- 239000011148 porous material Substances 0.000 abstract 3
- 239000002131 composite material Substances 0.000 abstract 1
- 229910052708 sodium Inorganic materials 0.000 abstract 1
- 239000011734 sodium Substances 0.000 abstract 1
- 235000011121 sodium hydroxide Nutrition 0.000 description 17
- 239000000243 solution Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 3
- 150000001450 anions Chemical class 0.000 description 2
- 230000000903 blocking effect Effects 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical compound [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- 239000013032 Hydrocarbon resin Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 229920006270 hydrocarbon resin Polymers 0.000 description 1
- 230000008595 infiltration Effects 0.000 description 1
- 238000001764 infiltration Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 239000005011 phenolic resin Substances 0.000 description 1
- 229920001568 phenolic resin Polymers 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 239000000376 reactant Substances 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 230000001052 transient effect Effects 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
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- Solid Fuels And Fuel-Associated Substances (AREA)
- Cosmetics (AREA)
Abstract
The invention relates to a thixotropic gel temporary plugging agent for acidification of a low-permeability oil field oil layer, and preparation and application thereof; the rosin-sodium hydroxide-polyacrylamide composite material consists of rosin, sodium hydroxide, polyacrylamide and water, wherein the reaction liquid of the rosin and the sodium hydroxide accounts for 5-15%, the polyacrylamide accounts for 0.1-0.3% and the balance is tap water, wherein the weight of the components is 100%; the temporary plugging agent can easily enter a water-producing large pore channel or a crack wetted by a water phase, and reacts with oil layer water to generate gel which is difficult to flow, so that subsequent acidizing liquid is prevented and limited from continuously seeping along a water flow channel of the large pore channel, the flowing direction of acid liquid is changed, and the acidizing liquid enters a blocked oil seeping pore channel; the acid liquid enters the blocked target layer, the blockage is relieved, and the oil well yield is recovered and improved.
Description
Technical field
The present invention relates to a kind of low permeability oil field acid treatment of oil formation thixotropic gel temporary plugging agent and preparation and application.
Background technology.
During general acid treatment of oil formation, because of having high relatively seepage flow duct, road, water hole in the oil reservoir and more helping the non-oil reservoir seepage flow of water mobile duct (also cry and do layer), when injecting the water acid solution, acid solution is easy to enter these macropores, road, water hole, does layer, can cause the invalid or moisture rising significantly of oil well acidation.The main better method that compares that present this field addresses this problem is to adopt petroleum resin, hydrocarbon resin, phenolic resin particle shape to realize blocking up temporarily, because particle is to be suspended in the acid solution, play stifled temporarily effect by particle, but also stopped up oily discharge orifice road simultaneously, selectivity is relatively poor, limit acid solution and entered the degree of depth in oil impregnate duct, thereby limited the amplitude of the volume increase of measure.
Summary of the invention
The objective of the invention is to overcome the injection difficulty that present use granule type temporary plugging agent exists, selectivity is relatively poor, usage quantity is restricted, temporarily stifled action effect is the ideal present situation not really, make the temporary plugging agent can be than being easier to enter into water wetting product water macropore or crack, utilize the general conditions of higher of infiltration oil field oil-reservoir water salinity, make the temporary plugging agent that is injected into be easy to react to generate be difficult to the mobile gel with oil-reservoir water, thereby stop and limit acidifying liquid subsequently and continue water stream channel seepage flow along macropore, reach the direction that the change acid solution flows to, enter the oil impregnate duct of obstruction; In addition, if the acid solution of injecting continues to flow to along the macropore that has temporarily stifled liquid subsequently, temporarily stifled liquid can also generate with the acid solution precursor reactant and be difficult to the mobile gel, thereby change the direction that acid solution flows to, reach at last and make acid solution effectively enter blocked zone of interest, remove and stop up, recover and the raising oil well output.
Low permeability oil field acid treatment of oil formation thixotropic gel temporary plugging agent of the present invention, be made up of rosin, sodium hydroxide, polyacrylamide and water, by forming weight 100%, rosin and sodium hydroxide reaction liquid are 5-15%, polyacrylamide is 0.1-0.3%, and surplus is a tap water.
The described low permeability oil field acid treatment of oil formation preparation method of thixotropic gel temporary plugging agent:
(1) be 1: 0.18 proportional arrangement rosin and sodium hydroxide reaction liquid by rosin and sodium hydroxide weight, earlier sodium hydroxide be dissolved in the tap water that can drink that the rosin with proportional adds again, heating was boiled 5 minutes, and it is stand-by to treat that nature cools to room temperature;
(2) anionic polyacrylamide of dissolving 0.1-0.3% weight in tap water;
(3) with rosin reaction liquid and the moulding of polyacrylamide liquid mixing; By quality rosin and sodium hydroxide reaction liquid is 5-15%, and polyacrylamide is 0.1-0.3%, and surplus is a tap water.
Described low permeability oil field acid treatment of oil formation is used with the thixotropic gel temporary plugging agent,
The implementing process method:
(1) before acidifying with 0.5 cube of acidifying liquid of every rice bran oil layer pre-treatment stratum,
(2) with active water circulation pit shaft well head is returned out in residual acid;
(3) annotate 3 cubes of active waters, promoting agent is an anionic, injects this thixotropic gel temporary plugging agent afterwards;
(4) annotate 1.5-3 cubical active water, promoting agent is an anionic, injects acidifying liquid afterwards;
(5) active water of oil filling pipe volumetric quantity;
(6) closing well reaction.
Injected this thixotropic gel liquid before injecting acidifying liquid, when meeting with local water when its forward position, contain certain density divalent-metal ion owing in the local water, this thixotropic gel system becomes not runny gel immediately, stops up these macropores; In addition, because this thixotropic gel has at first occupied macropore, when acid solution continues to enter when containing the thixotroping system, thixotropic gel also becomes immediately and is difficult to flow, thereby the obstruction macropore makes the acid solution of injecting subsequently enter the oil impregnate duct, and selectivity is better, can remove oil layer blocking, improve oil well output; After the measure, if water is migrated to the pit shaft direction in the waterbearing stratum in the oil reservoir, when it runs into the thixotroping system, generate immediately and be difficult to the mobile gel, increase water mobile resistance, thereby limit and controlled the output of water, when it meets the strong gel that acid system forms, after 10 hours, just degraded generates loose very tiny particulate, takes out of with produced fluid easily, reaches temporary transient obstruction purpose.
Embodiment
Embodiment 1
The synthetic of temporary plugging agent given an example:
1. get the raw materials ready: three grades of rosin 8.3g 98% caustic soda 1.5g, the polyacrylamide 0.3g of 2,000 ten thousand molecular weight, one of heating jacket, two in 200ml beaker, one in thermometer.
2. the caustic soda with 1.5g is dissolved in the tap water of 50ml, treats after the whole dissolvings of caustic soda the rosin 8.3g that pulverizes to be added wherein.
3. above-mentioned liquid is put into heating jacket and be heated to 95 ℃, after rosin dissolves fully, stop heating, take out and cool room temperature. and replenish tap water to 100ml, obtain No. 1 component of temporary plugging agent;
4. add tap water 100ml in the 200ml beaker, under stirring action the 0.5g polyacrylamide slowly is sprinkling upon in the water, continuously stirring is all dissolved until polyacrylamide.Obtain No. 2 components of temporary plugging agent;
5. No. 1 component and No. 2 components are mixed moulding.
Implement sharp 2
The described low permeability oil field acid treatment of oil formation preparation method of thixotropic gel temporary plugging agent:
(1) be 1: 0.18 proportional arrangement rosin and sodium hydroxide reaction liquid by rosin and sodium hydroxide weight, earlier sodium hydroxide be dissolved in the tap water that can drink that the rosin with proportional adds again, heating was boiled 5 minutes, and it is stand-by to treat that nature cools to room temperature;
(2) dissolved anion polyacrylamide in tap water;
(3) with rosin reaction liquid and the moulding of polyacrylamide liquid mixing; By quality rosin and sodium hydroxide reaction liquid is 15%, and polyacrylamide is 0.3%, and surplus is a tap water.
Described low permeability oil field acid treatment of oil formation is used with the thixotropic gel temporary plugging agent,
The implementing process method:
(1) before acidifying with 0.5 cube of acidifying liquid of every rice bran oil layer pre-treatment stratum,
(2) with active water circulation pit shaft well head is returned out in residual acid;
(3) annotate 3 cubes of active waters, promoting agent is an anionic, injects this thixotropic gel temporary plugging agent afterwards;
(4) annotate 1.5 cubical active waters, promoting agent is an anionic, injects acidifying liquid afterwards;
(5) active water of oil filling pipe volumetric quantity;
(6) closing well reaction.
Embodiment 3
The described low permeability oil field acid treatment of oil formation preparation method of thixotropic gel temporary plugging agent:
(1) be 1: 0.18 proportional arrangement rosin and sodium hydroxide reaction liquid by rosin and sodium hydroxide weight, earlier sodium hydroxide be dissolved in the tap water that can drink that the rosin with proportional adds again, heating was boiled 5 minutes, and it is stand-by to treat that nature cools to room temperature;
(2) dissolved anion polyacrylamide in tap water;
(3) with rosin reaction liquid and the moulding of polyacrylamide liquid mixing; By quality rosin and sodium hydroxide reaction liquid is 5%, and polyacrylamide is 0.1%, and surplus is a tap water.
Described low permeability oil field acid treatment of oil formation is used with the thixotropic gel temporary plugging agent,
The implementing process method:
(1) before acidifying with 0.5 cube of acidifying liquid of every rice bran oil layer pre-treatment stratum,
(2) with active water circulation pit shaft well head is returned out in residual acid;
(3) annotate 3 cubes of active waters, promoting agent is an anionic, injects this thixotropic gel temporary plugging agent afterwards;
(4) annotate 3 cubical active waters, promoting agent is an anionic, injects acidifying liquid afterwards;
(5) active water of oil filling pipe volumetric quantity;
(6) closing well reaction.
Claims (3)
1. low permeability oil field acid treatment of oil formation thixotropic gel temporary plugging agent, it is characterized in that: be made up of rosin, sodium hydroxide, polyacrylamide and water, by forming weight 100%, rosin and sodium hydroxide reaction liquid are 5-15%, polyacrylamide is 0.1-0.3%, and surplus is a tap water.
2. the described low permeability oil field acid treatment of oil formation of a claim 1 is with the preparation method of thixotropic gel temporary plugging agent:
(1) be 1: 0.18 proportional arrangement rosin and sodium hydroxide reaction liquid by rosin and sodium hydroxide weight, earlier sodium hydroxide be dissolved in the tap water that can drink that the rosin with proportional adds again, heating was boiled 5 minutes, and it is stand-by to treat that nature cools to room temperature;
(2) anionic polyacrylamide of dissolving 0.1-0.3% weight in tap water;
(3) with rosin reaction liquid and the moulding of polyacrylamide liquid mixing; By quality rosin and sodium hydroxide reaction liquid is 5-15%, and polyacrylamide is 0.1-0.3%, and surplus is a tap water.
3. the described low permeability oil field acid treatment of oil formation of claim 1 is used with the thixotropic gel temporary plugging agent, it is characterized in that:
The implementing process method:
(1) before acidifying with 0.5 cube of acidifying liquid of every rice bran oil layer pre-treatment stratum,
(2) with active water circulation pit shaft well head is returned out in residual acid;
(3) annotate 3 cubes of active waters, promoting agent is an anionic, injects the thixotropic gel temporary plugging agent afterwards;
(4) annotate 1.5-3 cubical active water, promoting agent is an anionic, injects acidifying liquid afterwards;
(5) active water of oil filling pipe volumetric quantity;
(6) closing well reaction.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910242178 CN102093876B (en) | 2009-12-09 | 2009-12-09 | Thixotropic gel temporary plugging agent for acidification of oil layer of low-permeability oil field and preparation and application thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910242178 CN102093876B (en) | 2009-12-09 | 2009-12-09 | Thixotropic gel temporary plugging agent for acidification of oil layer of low-permeability oil field and preparation and application thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102093876A true CN102093876A (en) | 2011-06-15 |
| CN102093876B CN102093876B (en) | 2013-02-13 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910242178 Active CN102093876B (en) | 2009-12-09 | 2009-12-09 | Thixotropic gel temporary plugging agent for acidification of oil layer of low-permeability oil field and preparation and application thereof |
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| Country | Link |
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| CN (1) | CN102093876B (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321460A (en) * | 2011-06-22 | 2012-01-18 | 西安石油大学 | A kind of oil and gas wells in oil fields well cementation is with micro foam agent and preparation method thereof |
| CN108048067A (en) * | 2017-11-24 | 2018-05-18 | 三原弘迪森精细化工有限公司 | A kind of preparation method of pressure break biogum |
| CN115433556A (en) * | 2022-09-14 | 2022-12-06 | 大庆汇联技术开发有限公司 | Preparation method of diversion fracturing temporary plugging agent in low-permeability oilfield joints |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1309798C (en) * | 2004-04-29 | 2007-04-11 | 中国石油化工股份有限公司 | Follow-drilling plugging agent and its preparation method and use |
| DE102006003201A1 (en) * | 2006-01-24 | 2007-07-26 | Basf Construction Polymers Gmbh | Reducing viscosity of polymer thickened aqueous phase with crude oil and/or natural gas, comprises forming highly liquid emulsion with water as continuous phase, where emulsion is formed by adding surface active component to system |
-
2009
- 2009-12-09 CN CN 200910242178 patent/CN102093876B/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102321460A (en) * | 2011-06-22 | 2012-01-18 | 西安石油大学 | A kind of oil and gas wells in oil fields well cementation is with micro foam agent and preparation method thereof |
| CN108048067A (en) * | 2017-11-24 | 2018-05-18 | 三原弘迪森精细化工有限公司 | A kind of preparation method of pressure break biogum |
| CN115433556A (en) * | 2022-09-14 | 2022-12-06 | 大庆汇联技术开发有限公司 | Preparation method of diversion fracturing temporary plugging agent in low-permeability oilfield joints |
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| Publication number | Publication date |
|---|---|
| CN102093876B (en) | 2013-02-13 |
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