CN103965845A - Flushing fluid for cementing of horizontal shale gas well - Google Patents
Flushing fluid for cementing of horizontal shale gas well Download PDFInfo
- Publication number
- CN103965845A CN103965845A CN201310045528.6A CN201310045528A CN103965845A CN 103965845 A CN103965845 A CN 103965845A CN 201310045528 A CN201310045528 A CN 201310045528A CN 103965845 A CN103965845 A CN 103965845A
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- shale gas
- oil
- fluid
- drilling fluid
- gas horizontal
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- 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
- C09K8/52—Compositions for preventing, limiting or eliminating depositions, e.g. for cleaning
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Abstract
The invention provides a high-efficiency flushing fluid applicable to cementing of a horizontal shale gas well. The flushing fluid has certain shearing force and viscosity, exerts a dragging effect on oil slurry and an oil film under the action of hydraulic machinery and achieves the purposes of effective cleaning of the oil film and replacement of a viscous oil-based drilling fluid. The flushing fluid is mainly composed of a nonionic surfactant, an anionic surfactant, organic acid and a viscosity and shearing force improving agent, and comprises, by weight, 2 to 10 parts of the nonionic surfactant, 2 to 7 parts of the anionic surfactant, 2 to 4 parts of organic acid, 0.5 to 5.0 parts of the viscosity and shearing force improving agent and 72 to 100 parts of clear water. The flushing fluid provided by the invention has a high efficiency flushing effect on drilling fluids with high viscosity and shearing force and with a wide range of the oil-water ratio, e.g., from 60/40 (v/v) to 90/10(v/v).
Description
Technical field
The present invention relates to reinforcing oil well technology, belong to the flushing used of shale gas horizontal cementing wash oil base drilling fluid, spacer pad field.
Background technology
The main bugbear that shale gas horizontal well drilling process exists is borehole well instability.Borehole well instability will be brought certain difficulty to operations such as drilling well, geological logging, well logging and well cementation.Oil base drilling fluid is usually used in solving in shale gas horizontal well drilling shale stability problem as a kind of good drilling fluid system, and has obtained good wellbore construction effect.But with regard to cementing operation, oil base drilling fluid can be trapped in interface and form slurry oil and oil film, this will have a strong impact on the interface cementing strength of cement mantle, reduce the sealing quality of cement mantle, therefore before cementing operation time, to inject the washing fluid with the effect of wettability reversal high-efficiency rinsing, for cleaning the slurry oil, oil film and the mud cake that stick to interface, improve the cementing environment at annular space interface, ensure the sealing quality of cement mantle.
At present a lot of for the washing fluid kind of oil base drilling fluid.Application number is that 02148985.8 Chinese patent " oil-based mud flushing liquor and preparation method thereof " discloses the washing fluid that a kind of 2.5-3.5 of comprising part sodium hydroxide and 4.0-5.0 part ethylenediamine tetraacetic acid (EDTA) add 12.0-12.5 part oleic acid again, added and in clear water, stirred 20-30 minute, and then add 2.0-2.2 part sodium lauryl sulphate and 5.0-5.5 part alkyl fatty polyoxyethylenated alcohol to stir 55-65 minute, finally add again silicone antifoam agent.
Application number is that 01115908.1 Chinese patent " oil base mud well-cementing flushing fluid " discloses the washing fluid being made up of a kind of base oil and the Surfactant of two kinds of different molecular weights and a kind of Soxylat A 25-7 of alkylphenol, this washing fluid has good rinse capability to oil-base mud and mud cake, oil-base mud is had to the effect of remarkable dilution viscosity reduction simultaneously.
It is a kind of in clear water that application number is that 201110332950 Chinese patent " a kind of efficient anti-pollution isolation liquid for well cementation and preparation method thereof " discloses, add by weight suspension stabilizer, water retaining, tackifier, thinner, carry sticky carrying and cut the spacer pad that agent, weighting agent, pH value conditioning agent are prepared, this spacer pad is suitable for the hole condition of water-base drilling fluid.
It is a kind of in 100% clear water that application number is that 200710049483 Chinese patent " salt-containing separating liquid system and preparation method " discloses, and adds by mass percentage 1 ~ 5% clay mineral, 0.05 ~ 0.25% tackifier, 0.1 ~ 0.3% water retaining, 0.1 ~ 1.5% flow pattern regulator, 30 ~ 333% weighting agents, 1 ~ 35%NaCl, 0.06 ~ 0.3%Na
2cO
3and the spacer pad prepared of a small amount of defoamer, this salt-containing separating liquid has stronger anti-soluble salt pollution capacity, wide Auto-regulating System of Density of Heavy Medium scope, flexibly rheological ability of regulation and control and chemical compatibility between fluid preferably.
In " " Using Surfactant Nanotechnology to Engineer Displacement PackagesforCementing Operations " " SPE127885, introduce and utilized tensio-active agent nanotechnology for well cementing operation design isolated liquid displacing liquid.This technology can be simplified kinds of surfactants and dosage in spacer pad, thus reduction expense and human error at the scene.
It is larger that the described washing fluid/spacer pad of above prior art is mainly applicable to water oil ratio, for example be greater than 85/15(v/v) invert mud and the cleaning of oil-containing drilling fluid, but to the water oil ratio a wider range using in shale gas horizontal well drilling, be for example 60/40(v/v) ~ 90/10(v/v) developing result of such oil base drilling fluid, when particularly very high for oil base drilling fluid plastic viscosity, shear force, also has certain limitation.Stick to the oil base drilling fluid of casing wall and the borehole wall, the washing fluid not only expending is a lot, and is difficult to clean up, and has affected to a great extent the well cementation bonding quality of second interface, and this carries out extensive staged fracturing to the later stage and makes a big impact.
Summary of the invention
The object of the invention is: solve shale gas horizontal well drilling and use oil base drilling fluid can on casing wall and the borehole wall, adhere to one deck oil base drilling fluid and oil film, cause cement mantle interface agglutination degradation problem.The high-efficiency rinsing spacer pad that a kind of applicable shale gas horizontal cementing is provided, washing fluid has certain shear force and viscosity, plays the drag interaction to slurry oil and oil film under water conservancy machinery effect, reaches the object of effective cleaning oil film and replacement toughening oil base drilling fluid.
For achieving the above object, the technical solution used in the present invention is to provide a kind of shale gas horizontal cementing washing fluid, and it comprises nonionogenic tenside, anion surfactant, organic acid and carries sticky carrying and cut agent.
Wherein nonionogenic tenside is one or more the combination in fatty alcohol-polyoxyethylene ether, polyxyethylated acyl hydramine, aliphatic acid polyethenoxy alkane ester or alkylphenol polyoxyethylene.Described fatty alcohol-polyoxyethylene ether molecular formula is R
1o (CH
2cH
2o)
mh, alkyl R in formula
1be preferably C
12～C
18alkyl; M is preferably 3～9; Described polyxyethylated acyl hydramine molecular formula is R
2cON (CH
2cH
2o)
2h, according to R
2difference be divided into coconut oil diethanol amide or plam oil diglycollic amide; Described aliphatic acid polyethenoxy alkane ester molecule formula is:
R
3cOO (CH
2cH
2o)
nh, alkyl R in formula
3be preferably C
12～C
18alkyl; N is preferably 8～20, and alkylphenol polyoxyethylene molecular formula is
alkyl R in formula
4be preferably C
8or C
9alkyl; X is preferably 8～12.Anion surfactant is preferably alkyl alcohol polyoxyethylene ether phosphate salt.Alkyl alcohol polyoxyethylene ether phosphate salt molecular formula is R
5o (CH
2cH
2o)
yoPO (ONa)
2, alkyl R in formula
5be preferably C
8～C
12alkyl.Organic acid is preferably linear alkyl benzene sulphonic acid or mahogany acid.Linear alkyl benzene sulphonic acid molecular formula is
alkyl R in formula
6be preferably C
8～C
16alkyl; Mahogany acid molecular formula is R
7sO
3h, alkyl R in formula
7be preferably C
14～C
18alkyl.Carrying sticky carrying cuts agent and is preferably slope soil or Xylo-Mucine.
Preferably, each composition and proportioning (by weight) are as follows: 2 ~ 10 parts of nonionogenic tensides, and 2 ~ 7 parts of anion surfactants, 2 ~ 4 parts of organic acids, carry sticky carrying and cut 0.5 ~ 5.0 part of agent, 72 ~ 100 parts, clear water.
Another object of the present invention is to provide a kind of scavenging solution of oil base drilling fluid, comprise and use described shale gas horizontal cementing washing fluid.
Preferably, described oil base drilling fluid is white oil base or diesel oil based drilling fluid.
More preferably, the service temperature of described purging method is 20-90 DEG C.
Still more preferably, the water oil ratio of described oil base drilling fluid is 60/40 (v/v) ~ 90/10 (v/v), is preferably 60/40 (v/v) ~ 80/20 (v/v).
It is the application aspect the oil base drilling fluid that 60/40 (v/v) ~ 90/10 (v/v) and viscosity, shear force are larger cleaning water oil ratio that another object of the present invention is to provide a kind of described shale gas horizontal cementing washing fluid.
Advantage of the present invention at least comprises: the washing fluid of inventing has adaptability widely, for example, to being that the high and low oil base drilling fluid of viscosity all has good cleaning performance, and wider to water oil ratio scope, be for example that the drilling fluid of 60/40 (v/v) ~ 90/10 (v/v) has good cleaning performance.The washing fluid of the application of the invention, can be to using white oil base and diesel oil base class drilling fluid to have good wettability reversal in shale gas drilling well and cleaning displacement effect, can be under 20 ~ 90 DEG C of conditions of temperature, oil base drilling fluid is effectively cleaned, efficiently solving shale gas drilling well with this washing fluid uses oil base drilling fluid viscosity high, when well cementation, oil film cleans difficulty, and annular space replaces sordid problem, and the drilling fluid effect that especially plastic viscosity is larger is more obvious.
Embodiment
Below coordinate the preferred embodiments of the present invention, further set forth the technique means that the present invention takes for reaching predetermined goal of the invention.
Clear water of the present invention includes but not limited to pure water, deionized water or the domestic water of homemade disposable distilled water or purchase; Alkyl alcohol polyoxyethylene ether phosphate salt of the present invention includes but not limited to sodium salt or sylvite; Described sulfonic acid includes but not limited to linear alkyl benzene sulphonic acid or mahogany acid, and the sulfonic acid using in following embodiment is linear alkyl benzene sulphonic acid.
Embodiment:
Example 1:
Add 1.0g Xylo-Mucine in 200g domestic water after, stir 60 minutes, add successively the polyxyethylated acyl hydramine+6g of 10g fatty alcohol-polyoxyethylene ether+10g alkyl alcohol polyoxyethylene ether phosphate sodium+1g sulfonic acid.
Example 2:
Add 10g slope soil in 200g deionized water after, stir 30 minutes, add successively the polyxyethylated acyl hydramine+14g of 2g polyoxyethylene nonylphenol ether+2g alkyl alcohol polyoxyethylene ether phosphate sodium+3g sulfonic acid.
Example 3:
Add 2.0g Xylo-Mucine in 200g deionized water after, stir 60 minutes, add successively the polyxyethylated acyl hydramine+4g of 4g fatty alcohol-polyoxyethylene ether+6g aliphatic acid polyethenoxy ether potassium sulfate+8g sulfonic acid.
White oil base drilling fluid basic components is: the auxiliary emulsifying agent+2% organophilic clay+1% viscosity increaser+25%CaCl2 of base oil+2.8% primary emulsion+0.7% solution+2.5%CaO+2% fluid loss agent+3～5% plugging agent+water.
Diesel oil based drilling fluid basic components is: the auxiliary emulsifying agent+1% viscosity increaser+20%CaCl in base oil+3.5% organophilic clay+2.5% primary emulsion+0.9
2solution+2%CaO+3% fluid loss agent+0.2% flow pattern regulator+2% plugging agent.
Be mixed with water oil ratio 90:10(v/v), 80:20(v/v), 70:30(v/v) and 60:40(V/v) four kinds of oil-base mud carry out irrigation tests.
The rheological data of the different water oil ratio white oil of table 1 base drilling fluid
The rheological data of the different water oil ratio diesel oil based of table 2 drilling fluid
Be mixed with water oil ratio 90:10(v/v), 80:20(v/v), 70:30(v/v) and 60:40(v/v) four kinds of oil-base mud carry out irrigation tests.
The cleaning performance of table 3 flushing spacer fluid to different water oil ratio white oil base drilling fluids
The cleaning performance of table 4 flushing spacer fluid to different water oil ratio diesel oil based drilling fluids
From above experimental result, along with the reduction of water oil ratio, the viscosity of oil base drilling fluid and shear force increase, and reach oil base drilling fluid 100% is rinsed well, and the time that needs washing fluid to rinse is also longer.Shale gas horizontal cementing washing fluid of the present invention is higher for this viscosity and shear force, and water oil ratio a wider range, for example, from 60/40(v/v) to 90/10(v/v) drilling fluid all have efficient developing result.
The above is only the preferred embodiments of the present invention, not the present invention is done to any pro forma restriction, although the present invention discloses as above with preferred embodiment, but not in order to limit the present invention, any those skilled in the art, not departing from the scope of technical solution of the present invention, when can utilizing the technology contents of above-mentioned announcement to make a little change or being modified to the equivalent embodiment of equivalent variations, in every case be the content that does not depart from technical solution of the present invention, any simple modification of above embodiment being done according to technical spirit of the present invention, equivalent variations and modification, all still belong in the scope of technical solution of the present invention.
Claims (11)
1. a shale gas horizontal cementing washing fluid, is characterized in that, comprises nonionogenic tenside, anion surfactant, organic acid and carries sticky carrying and cut agent.
2. shale gas horizontal cementing washing fluid as claimed in claim 1, is characterized in that, also comprises clear water, described nonionogenic tenside, anion surfactant, organic acid, carries and sticky carries that to cut the proportioning (by weight) of agent and clear water as follows:
Nonionogenic tenside 2-10 part anion surfactant 2-7 part
Organic acid 0.5-4 part is carried sticky carrying and is cut agent 0.5-5.0 part clear water 72-100 part.
3. shale gas horizontal cementing washing fluid as claimed in claim 1 or 2, it is characterized in that, described nonionogenic tenside is one or more the combination in fatty alcohol-polyoxyethylene ether, polyxyethylated acyl hydramine, aliphatic acid polyethenoxy alkane ester or alkylphenol polyoxyethylene.
4. the shale gas horizontal cementing washing fluid as described in any one in claim 1-3, is characterized in that, described anion surfactant is alkyl alcohol polyoxyethylene ether phosphate salt.
5. the shale gas horizontal cementing washing fluid as described in any one in claim 1-4, is characterized in that, described organic acid is linear alkyl benzene sulphonic acid or mahogany acid.
6. the shale gas horizontal cementing washing fluid as described in any one in claim 1-5, is characterized in that, described in carry and sticky carry that to cut agent be slope soil or Xylo-Mucine.
7. a purging method for oil base drilling fluid, comprises that right to use requires the shale gas horizontal cementing washing fluid described in any one in 1-6.
8. method as claimed in claim 7, is characterized in that, described oil base drilling fluid is white oil base or diesel oil based drilling fluid.
9. method as claimed in claim 7 or 8, is characterized in that, the service temperature of the purging method of described oil base drilling fluid is 20-90 DEG C.
10. method as claimed in any one of claims 7-9, is characterized in that, the water oil ratio of described oil base drilling fluid is 60/40 (v/v) ~ 90/10 (v/v), is preferably 60/40 (v/v) ~ 80/20 (v/v).
Shale gas horizontal cementing washing fluid in 11. claim 1-6 described in any one is the application aspect the oil base drilling fluid of 60/40 (v/v) ~ 90/10 (v/v) cleaning water oil ratio.
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|---|---|---|---|
| CN201310045528.6A CN103965845B (en) | 2013-02-05 | 2013-02-05 | Flushing fluid for cementing of horizontal shale gas well |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310045528.6A CN103965845B (en) | 2013-02-05 | 2013-02-05 | Flushing fluid for cementing of horizontal shale gas well |
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| Publication Number | Publication Date |
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| CN103965845A true CN103965845A (en) | 2014-08-06 |
| CN103965845B CN103965845B (en) | 2017-04-12 |
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Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449621A (en) * | 2014-12-18 | 2015-03-25 | 中国石油大学(华东) | Efficient well-cementing flushing fluid system |
| CN105001841A (en) * | 2015-07-07 | 2015-10-28 | 西南石油大学 | Emulsifying and flushing spacer fluid for improving cementing quality of oil-based drilling fluid and preparation method of emulsifying and flushing spacer fluid |
| CN105670587A (en) * | 2016-01-12 | 2016-06-15 | 中国海洋石油总公司 | Multifunctional oil-based mud cleaning liquid and preparation method thereof |
| CN106634913A (en) * | 2016-11-18 | 2017-05-10 | 广汉市福客科技有限公司 | Cleaning agent for oil-based drilling fluid as well as preparation method and evaluation method thereof |
| CN106867489A (en) * | 2015-12-14 | 2017-06-20 | 中国石油天然气股份有限公司 | Cleaning solution for removing oil sludge pollution of oil-based drilling fluid |
| CN107418540A (en) * | 2017-06-13 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | Well cementation irrigation |
| CN107987817A (en) * | 2017-11-28 | 2018-05-04 | 中国煤炭地质总局水文地质局 | One kind is in limestone formation horizontal well construction flushing liquor |
| CN107987819A (en) * | 2017-12-20 | 2018-05-04 | 卫辉市化工有限公司 | One kind well cementation less toxic, low bubble oil-base mud irrigation and preparation method thereof |
| CN110846013A (en) * | 2019-11-26 | 2020-02-28 | 西安建筑科技大学 | Well cementation flushing fluid for oil-based drilling fluid and preparation and application methods thereof |
| CN112210355A (en) * | 2020-09-14 | 2021-01-12 | 天津中油渤星工程科技有限公司 | Shale gas well cementing oil-flooding flushing agent and preparation method thereof |
| CN113943562A (en) * | 2020-07-15 | 2022-01-18 | 中国石油天然气股份有限公司 | Workover fluid and preparation method thereof |
| CN114196386A (en) * | 2020-09-17 | 2022-03-18 | 中国石油化工股份有限公司 | Well cementation spacer fluid composition, well cementation spacer fluid and preparation method and application thereof |
| CN115141617A (en) * | 2021-03-31 | 2022-10-04 | 中国石油化工股份有限公司 | Tackifying and cutting-off agent, oil-based mud flushing fluid, and preparation method and application thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1242556A1 (en) * | 1999-12-10 | 2002-09-25 | Integrity Industries, Inc. | Acid based micro-emulsions |
| CN1405265A (en) * | 2002-11-18 | 2003-03-26 | 大庆石油管理局 | Oil-based mud flushing liquor and preparation method thereof |
| CN101775273A (en) * | 2009-01-09 | 2010-07-14 | 中国石油化工股份有限公司 | High-temperature resistance base fluid for well cementing of oil gas well, preparation method and application thereof |
| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving water displacement recovery ratio of low-permeability reservoir |
| CN102732239A (en) * | 2012-07-24 | 2012-10-17 | 天津油孚科技发展有限公司 | Organic and inorganic composite flushing liquid as well as preparation method and applications thereof |
-
2013
- 2013-02-05 CN CN201310045528.6A patent/CN103965845B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1242556A1 (en) * | 1999-12-10 | 2002-09-25 | Integrity Industries, Inc. | Acid based micro-emulsions |
| CN1405265A (en) * | 2002-11-18 | 2003-03-26 | 大庆石油管理局 | Oil-based mud flushing liquor and preparation method thereof |
| CN101775273A (en) * | 2009-01-09 | 2010-07-14 | 中国石油化工股份有限公司 | High-temperature resistance base fluid for well cementing of oil gas well, preparation method and application thereof |
| CN102312666A (en) * | 2010-07-06 | 2012-01-11 | 中国石油天然气股份有限公司 | Method for improving water displacement recovery ratio of low-permeability reservoir |
| CN102732239A (en) * | 2012-07-24 | 2012-10-17 | 天津油孚科技发展有限公司 | Organic and inorganic composite flushing liquid as well as preparation method and applications thereof |
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104449621B (en) * | 2014-12-18 | 2017-06-06 | 中国石油大学(华东) | A kind of efficiently well cementation flushing liquor system |
| CN104449621A (en) * | 2014-12-18 | 2015-03-25 | 中国石油大学(华东) | Efficient well-cementing flushing fluid system |
| CN105001841A (en) * | 2015-07-07 | 2015-10-28 | 西南石油大学 | Emulsifying and flushing spacer fluid for improving cementing quality of oil-based drilling fluid and preparation method of emulsifying and flushing spacer fluid |
| CN106867489B (en) * | 2015-12-14 | 2020-03-10 | 中国石油天然气股份有限公司 | Cleaning solution for removing oil sludge pollution of oil-based drilling fluid |
| CN106867489A (en) * | 2015-12-14 | 2017-06-20 | 中国石油天然气股份有限公司 | Cleaning solution for removing oil sludge pollution of oil-based drilling fluid |
| CN105670587A (en) * | 2016-01-12 | 2016-06-15 | 中国海洋石油总公司 | Multifunctional oil-based mud cleaning liquid and preparation method thereof |
| CN105670587B (en) * | 2016-01-12 | 2019-02-26 | 中国海洋石油集团有限公司 | A kind of multi-functional oil base mud cleans liquid and preparation method thereof |
| CN106634913B (en) * | 2016-11-18 | 2019-09-03 | 广汉市福客科技有限公司 | A kind of oil base drilling fluid cleaning agent, preparation method and evaluation method |
| CN106634913A (en) * | 2016-11-18 | 2017-05-10 | 广汉市福客科技有限公司 | Cleaning agent for oil-based drilling fluid as well as preparation method and evaluation method thereof |
| CN107418540A (en) * | 2017-06-13 | 2017-12-01 | 中国石油集团渤海钻探工程有限公司 | Well cementation irrigation |
| CN107987817A (en) * | 2017-11-28 | 2018-05-04 | 中国煤炭地质总局水文地质局 | One kind is in limestone formation horizontal well construction flushing liquor |
| CN107987817B (en) * | 2017-11-28 | 2020-09-15 | 中煤地华盛水文地质勘察有限公司 | Flushing fluid for horizontal well construction in limestone stratum |
| CN107987819A (en) * | 2017-12-20 | 2018-05-04 | 卫辉市化工有限公司 | One kind well cementation less toxic, low bubble oil-base mud irrigation and preparation method thereof |
| CN107987819B (en) * | 2017-12-20 | 2020-06-19 | 卫辉市化工有限公司 | Low-toxicity and low-foam oil-based mud flushing agent for well cementation and preparation method thereof |
| CN110846013A (en) * | 2019-11-26 | 2020-02-28 | 西安建筑科技大学 | Well cementation flushing fluid for oil-based drilling fluid and preparation and application methods thereof |
| CN113943562A (en) * | 2020-07-15 | 2022-01-18 | 中国石油天然气股份有限公司 | Workover fluid and preparation method thereof |
| CN112210355A (en) * | 2020-09-14 | 2021-01-12 | 天津中油渤星工程科技有限公司 | Shale gas well cementing oil-flooding flushing agent and preparation method thereof |
| CN114196386A (en) * | 2020-09-17 | 2022-03-18 | 中国石油化工股份有限公司 | Well cementation spacer fluid composition, well cementation spacer fluid and preparation method and application thereof |
| CN115141617A (en) * | 2021-03-31 | 2022-10-04 | 中国石油化工股份有限公司 | Tackifying and cutting-off agent, oil-based mud flushing fluid, and preparation method and application thereof |
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