CN102220111B - Leak stopping and wall protecting agent for petroleum drilling fluid and preparation method thereof - Google Patents
Leak stopping and wall protecting agent for petroleum drilling fluid and preparation method thereof Download PDFInfo
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- CN102220111B CN102220111B CN 201110106589 CN201110106589A CN102220111B CN 102220111 B CN102220111 B CN 102220111B CN 201110106589 CN201110106589 CN 201110106589 CN 201110106589 A CN201110106589 A CN 201110106589A CN 102220111 B CN102220111 B CN 102220111B
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- drilling fluid
- bean curd
- blocking wall
- protective agent
- dried bean
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Abstract
The invention relates to a leak stopping and wall protecting agent for a petroleum drilling fluid and a preparation method thereof. The agent comprises 20 to 80 wt% of dry vegetable silk, 30 to 40 wt% of plant fruit shell powder, 20 to 55 wt% of sawdust particles, and 5 to 15 wt% of a shale scattering inhibitor. The leak stopping and wall protecting agent of the invention, which allows different pervious beds in drilling and large area well wall crack to be stopped, has the advantages of low permeability after leak stopping, strong stability of the well wall, good caving, no pollution to oil gas layers, abundant raw materials, low production cost and the like, and is suitable for various drilling processes of the pervious beds.
Description
Technical field
The present invention relates to a kind of leakage blocking wall protective agent and preparation method thereof, relate in particular to a kind of leakage blocking wall protective agent of in petroleum drilling fluid, using, belong to technical field of petroleum extraction.
Background technology
Growing along with oil exploration industry, also more and more higher to the requirement of additive for drilling fluid.In drilling operation, for preventing drilling mud to borehole wall seepage, in drilling fluid, add the leakage blocking wall protective agent usually.The existing plugging agent that uses in drilling fluid mainly contains crane span structure and fills class plugging agent, diesel oil wilkinite plugging agent, resin gel plugging agent, calcium sulphonate or sodium sulfonate oil soluble plugging agent etc.Above-mentioned plugging agent is owing to limit by its composition, and its shutoff is loose, and especially for shutoff big area borehole wall crack, the solution cavity effect is relatively poor, low, the easy contaminated oil gas-bearing formation of borehole wall stability, and production cost height.
Summary of the invention
Technical problem to be solved by this invention is that the defective that overcomes prior art provides a kind of leakage blocking wall protective agent of using in petroleum drilling fluid, different pervious course in the effective shutoff drilling well process of this retaining wall agent energy, especially shutoff big area borehole wall crack has that solution cavity is effective, rate of permeation is low, a borehole wall stability advantage such as by force, contaminated oil gas-bearing formation, abundant raw materials, production cost be not low.In addition, the present invention also will further provide the preparation method of described leakage blocking wall protective agent.
Technical problem of the present invention is realized by following technical scheme.
A kind of leakage blocking wall protective agent of in petroleum drilling fluid, using, it is prepared by the component of following weight part:
Plant shredded dried bean curd 20-80 part,
Plant shell powder 30-40 part,
Wood pellet 20-55 part,
Shale scattered inhibitor 5-15 part.
The above-mentioned leakage blocking wall protective agent of using in petroleum drilling fluid, the median size of described plant shredded dried bean curd, plant shell powder and wood pellet is 0.15-0.4mm.
The above-mentioned leakage blocking wall protective agent of using in petroleum drilling fluid, described plant shredded dried bean curd is selected from one or more in root garden beet shredded dried bean curd (dregs of rice), radish shredded dried bean curd, the turnip shredded dried bean curd.
The above-mentioned leakage blocking wall protective agent of using in petroleum drilling fluid, described plant shell powder are to be selected from peanut hull meal, beans shell powder, the Exocarpium Gossypii powder one or more.
The above-mentioned leakage blocking wall protective agent of using in petroleum drilling fluid, described wood pellet are ash wood chip or pine wood chip.
The above-mentioned leakage blocking wall protective agent of using in petroleum drilling fluid, described shale scattered inhibitor is selected from polyacrylic acid potassium, potassium humate or Repone K.
A kind of method for preparing the above-mentioned leakage blocking wall protective agent of in petroleum drilling fluid, using, it prepares as follows:
A. screening particle diameter is plant shredded dried bean curd, plant shell powder, the wood pellet of 0.4-0.15mm;
B. according to weight proportion plant shredded dried bean curd, plant shell powder, wood pellet, shale scattered inhibitor are stirred and mix, get leakage blocking wall protective agent of the present invention.
Leakage blocking wall protective agent of the present invention in use, according to the drilling stratum situation, before entering drop ply, by weight this leakage blocking wall protective agent that in drilling fluid, adds 3-6%, according to the actual well drilled situation, as run into big area borehole wall crack, intensive solution cavity, take the circumstances into consideration again to add the agent of shutoff retaining wall by the 1-3% of drilling well liquid measure.
The leakage blocking wall protective agent of in petroleum drilling fluid, using of the present invention, the plant shredded dried bean curd of wherein selecting for use all is rich in the swelling property Mierocrystalline cellulose, has strong dilatancy, can be complementary with various leak-off passages after in the leak-off passage, expanding, anelasticity is strong in the leak-off passage, can form fine and close obstruction partition wall very soon, the shutoff retaining wall is effective.The plant shredded dried bean curd forms mesh skeleton in the agent of this shutoff retaining wall, and shale scattered inhibitor and plant shell powder, wood chip are filled in the mesh skeleton, the interrelated shielding sheath that forms densification, and effective stabilizing borehole.Because the present invention has adopted technique scheme, solved existing leakage blocking wall protective agent shutoff effectively and loosened the problem of borehole wall stability difference.Show through the test result on trial, different pervious course and shutoff big area borehole wall cracks in the effective shutoff drilling well process of leakage blocking wall protective agent energy of the present invention, have that rate of permeation is low after the leak stopping, borehole wall stability is strong, solution cavity is effective, advantage such as contaminated oil gas-bearing formation, abundant raw materials, production cost be not low, be applicable to the various drilling engineerings of absorbent ground.
Embodiment
Below in conjunction with specific embodiment the present invention is described in further details.
Embodiment 1
A. screening particle diameter is beet shredded dried bean curd, peanut hull meal, the pine wood pellet of 0.3mm;
B. with root garden beet shredded dried bean curd 30kg, peanut hull meal 30kg, pine wood pellet 30kg, polyacrylic acid potassium 13kg, stir and mix, get leakage blocking wall protective agent of the present invention.
Sealing filter loss measurement result is as follows:
Base slurry adopts general standard base slurry, is diesel oil wilkinite plugging agent to retaining wall agent in the same old way.
The result: in the identical shutoff time, retaining wall agent sealing filter loss of the present invention significantly is lower than retaining wall agent in the same old way, and the payzone abilities such as leakage blocking wall protective agent leak stopping ability of the present invention, protection oil, gas, water that illustrate are better than diesel oil wilkinite plugging agent.
Embodiment 2
A. screening particle diameter is the root garden beet shredded dried bean curd of 0.25mm, the peanut hull meal of 0.3mm, the ash wood pellet of 0.3mm;
B. with root garden beet shredded dried bean curd 60kg, peanut hull meal 35kg, ash wood pellet 26kg, polyacrylic acid potassium 10kg, stir and mix, get leakage blocking wall protective agent of the present invention.
Sealing filter loss measurement result is as follows:
Base slurry adopts general standard base slurry, is the resin gel plugging agent to retaining wall agent in the same old way.
The result: in the identical shutoff time, retaining wall agent sealing filter loss of the present invention significantly is lower than retaining wall agent in the same old way, and the payzone abilities such as leakage blocking wall protective agent leak stopping ability of the present invention, protection oil, gas, water that illustrate are better than the resin gel plugging agent.
Embodiment 3
A. screening particle diameter is the root garden beet shredded dried bean curd of 0.3mm, the peanut hull meal of 0.25mm, the pine wood pellet of 0.3mm;
B. with root garden beet shredded dried bean curd 300kg, peanut hull meal 300kg, pine wood pellet 200kg, polyacrylic acid potassium 50kg, stir and mix, get leakage blocking wall protective agent of the present invention.
The present invention cooperates products such as efficient anti-salt water retaining in certain drill crew's leakage application process of Xifeng, Gansu block, before entering drop ply, be 30 kilograms/cubic metre by this leakage blocking wall protective agent weight ratio and drilling fluid volume ratio and be added in the drilling fluid that in order to leakage blocking wall protective, the retaining wall effect is fine.
Embodiment 4
A. screening particle diameter is root garden beet shredded dried bean curd, the turnip shredded dried bean curd of 0.3mm, the peanut hull meal of 0.25mm, the ash wood pellet of 0.3mm;
B. with root garden beet shredded dried bean curd 70kg, turnip shredded dried bean curd 30kg, peanut hull meal 70kg, ash wood pellet 80kg, potassium humate 26kg, stir and mix, get leakage blocking wall protective agent of the present invention.
The present invention before entering drop ply, is 20 kilograms/cubic metre by this leakage blocking wall protective agent weight ratio and drilling fluid volume ratio and is added in the drilling fluid that the leakage blocking wall protective effect is fine in certain drill crew's application process of the high drain region of Shaanxi deckle piece.
Embodiment 5
A. screening particle diameter is radish shredded dried bean curd, the root garden beet shredded dried bean curd of 0.3mm, the soya bean shell powder of 0.18mm, Exocarpium Gossypii powder, the pine wood pellet of 0.3mm;
B. root is stirred and mixes with radish shredded dried bean curd 20kg, root garden beet shredded dried bean curd 20kg, soya bean shell powder 15kg, Exocarpium Gossypii powder 10Kg, pine sawdust 40kg, polyacrylic acid potassium 14kg, get leakage blocking wall protective agent of the present invention.
The present invention cooperates product such as efficient anti-salt water retaining with leakage blocking wall protective in certain drill crew's leakage application process of Xifeng, Gansu block, and duration of service is short, persistence is strong, the retaining wall effect is fine.
Embodiment 6
A. screening particle diameter is radish shredded dried bean curd, the turnip shredded dried bean curd of 0.4mm, the peanut hull meal of 0.15mm, Exocarpium Gossypii powder, the pine wood pellet of 0.3mm;
B. root is stirred and mixes with radish shredded dried bean curd 10kg, turnip shredded dried bean curd 30kg, peanut hull meal 10kg, Exocarpium Gossypii powder 15Kg, pine sawdust 40kg, Repone K 14kg, get leakage blocking wall protective agent of the present invention.
The present invention cooperates product such as efficient anti-salt water retaining with leakage blocking wall protective in certain group of leakage application process of Gansu Xifeng District, and duration of service is short, persistence is strong, the retaining wall effect is fine.
Claims (2)
1. a leakage blocking wall protective agent of using in petroleum drilling fluid is characterized in that, it is prepared by the component of following weight part:
Plant shredded dried bean curd 20-80 part,
Plant shell powder 30-40 part,
Wood pellet 20-55 part,
Shale scattered inhibitor 5-15 part.
2. the leakage blocking wall protective agent of using in petroleum drilling fluid according to claim 1 is characterized in that, the median size of described plant shredded dried bean curd, plant shell powder and wood pellet is 0.15-0.4mm.
3, the leakage blocking wall protective agent of using in petroleum drilling fluid according to claim 2 is characterized in that, described plant shredded dried bean curd is selected from one or more in root garden beet shredded dried bean curd, radish shredded dried bean curd, the turnip shredded dried bean curd.
4, the leakage blocking wall protective agent of using in petroleum drilling fluid according to claim 3 is characterized in that, described plant shell powder is to be selected from peanut hull meal, beans shell powder, the Exocarpium Gossypii powder one or more.
5, the leakage blocking wall protective agent of using in petroleum drilling fluid according to claim 4 is characterized in that, described wood pellet is ash wood chip or pine wood chip.
6, the leakage blocking wall protective agent of using in petroleum drilling fluid according to claim 5 is characterized in that, described shale scattered inhibitor is selected from polyacrylic acid potassium, potassium humate or Repone K.
7, a kind of preparation is characterized in that as the method for the leakage blocking wall protective agent used as described in the claim 1,2,3,4,5 or 6 it prepares as follows in petroleum drilling fluid:
A. screening particle diameter is plant shredded dried bean curd, plant shell powder, the wood pellet of 0.4-0.15mm;
B. according to weight proportion plant shredded dried bean curd, plant shell powder, wood pellet, shale scattered inhibitor are stirred and mix, get described leakage blocking wall protective agent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110106589 CN102220111B (en) | 2011-04-27 | 2011-04-27 | Leak stopping and wall protecting agent for petroleum drilling fluid and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110106589 CN102220111B (en) | 2011-04-27 | 2011-04-27 | Leak stopping and wall protecting agent for petroleum drilling fluid and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
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| CN102220111A CN102220111A (en) | 2011-10-19 |
| CN102220111B true CN102220111B (en) | 2013-07-03 |
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| CN 201110106589 Expired - Fee Related CN102220111B (en) | 2011-04-27 | 2011-04-27 | Leak stopping and wall protecting agent for petroleum drilling fluid and preparation method thereof |
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Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102703044B (en) * | 2012-05-23 | 2014-09-10 | 成都欧美克石油科技有限公司 | Novel cement slurry plugging fluid |
| CN102703043B (en) * | 2012-05-23 | 2014-04-09 | 成都欧美克石油科技有限公司 | Plugging material |
| CN103146362B (en) * | 2013-04-09 | 2015-06-24 | 石家庄华莱鼎盛科技有限公司 | Broad spectrum type high-efficient blocking agent for drilling fluid |
| CN106497526A (en) * | 2016-09-27 | 2017-03-15 | 任丘市力科节能材料有限公司 | A kind of plugging while drilling pressure-bearing retaining wall agent and preparation method thereof of drilling fluid |
| CN107011880B (en) * | 2017-05-22 | 2018-03-23 | 任丘市力科节能材料有限公司 | A kind of high temperature resistance pressure-bearing retaining wall agent and preparation method thereof of drilling fluid, application |
| EP3533969A1 (en) * | 2018-03-01 | 2019-09-04 | ETH Zürich | Admixture for preventing swelling of anhydrite containing rock material |
| WO2020185093A1 (en) | 2019-03-13 | 2020-09-17 | European Mud Company As | Composition for making a drilling fluid a non-invasive drilling fluid |
| NO345560B1 (en) * | 2019-03-13 | 2021-04-19 | European Mud Company As | Composition for making a solids-free drilling fluid a non-invasive drilling fluid |
| CN115404063B (en) * | 2021-05-26 | 2023-08-01 | 中国石油化工股份有限公司 | Environment-friendly plugging agent for water-based drilling fluid and preparation method thereof |
| CN116731691A (en) * | 2023-06-21 | 2023-09-12 | 陕西合信油服科技股份有限公司 | Low-permeability leakage-proof wall protecting agent for drilling fluid and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064096A (en) * | 1991-02-11 | 1992-09-02 | 江西省萍乡市麻山化工厂 | Drilling plugging agent |
| CN1153199A (en) * | 1995-12-29 | 1997-07-02 | 四川石油管理局川东钻探公司 | Composite plugging agent for drilling and production process thereof |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348711B (en) * | 2008-07-01 | 2012-05-23 | 中国海洋石油总公司 | Drill-feeding plugging agent |
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2011
- 2011-04-27 CN CN 201110106589 patent/CN102220111B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1064096A (en) * | 1991-02-11 | 1992-09-02 | 江西省萍乡市麻山化工厂 | Drilling plugging agent |
| CN1153199A (en) * | 1995-12-29 | 1997-07-02 | 四川石油管理局川东钻探公司 | Composite plugging agent for drilling and production process thereof |
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| CN102220111A (en) | 2011-10-19 |
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