CN1329126A - Flushing fluid for oil-based mud well cementation - Google Patents
Flushing fluid for oil-based mud well cementation Download PDFInfo
- Publication number
- CN1329126A CN1329126A CN 01115908 CN01115908A CN1329126A CN 1329126 A CN1329126 A CN 1329126A CN 01115908 CN01115908 CN 01115908 CN 01115908 A CN01115908 A CN 01115908A CN 1329126 A CN1329126 A CN 1329126A
- Authority
- CN
- China
- Prior art keywords
- oil
- cementing
- base mud
- washing fluid
- fatty acid
- 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
- 239000012530 fluid Substances 0.000 title claims abstract description 30
- 238000011010 flushing procedure Methods 0.000 title abstract description 9
- 239000003921 oil Substances 0.000 claims abstract description 21
- 239000002199 base oil Substances 0.000 claims abstract description 9
- 238000005406 washing Methods 0.000 claims description 27
- 239000002253 acid Substances 0.000 claims description 16
- 150000004665 fatty acids Chemical class 0.000 claims description 16
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 15
- 239000000194 fatty acid Substances 0.000 claims description 15
- 229930195729 fatty acid Natural products 0.000 claims description 15
- 150000002632 lipids Chemical class 0.000 claims description 11
- -1 polyoxyethylene Polymers 0.000 claims description 9
- RFVNOJDQRGSOEL-UHFFFAOYSA-N 2-hydroxyethyl octadecanoate Chemical compound CCCCCCCCCCCCCCCCCC(=O)OCCO RFVNOJDQRGSOEL-UHFFFAOYSA-N 0.000 claims description 7
- 229950007687 macrogol ester Drugs 0.000 claims description 7
- 229920003171 Poly (ethylene oxide) Polymers 0.000 claims description 5
- 239000013543 active substance Substances 0.000 claims description 4
- 239000010775 animal oil Substances 0.000 claims description 4
- 239000002283 diesel fuel Substances 0.000 claims description 4
- 229920001522 polyglycol ester Polymers 0.000 claims description 4
- 238000007670 refining Methods 0.000 claims description 3
- 125000000217 alkyl group Chemical group 0.000 claims description 2
- LYCAIKOWRPUZTN-UHFFFAOYSA-N ethylene glycol Natural products OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 2
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 2
- 235000013311 vegetables Nutrition 0.000 claims 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 abstract description 3
- 239000004094 surface-active agent Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 abstract 1
- 229940051841 polyoxyethylene ether Drugs 0.000 abstract 1
- 229920000056 polyoxyethylene ether Polymers 0.000 abstract 1
- 239000000080 wetting agent Substances 0.000 abstract 1
- 229910000831 Steel Inorganic materials 0.000 description 14
- 239000010959 steel Substances 0.000 description 14
- 235000019198 oils Nutrition 0.000 description 12
- 239000011435 rock Substances 0.000 description 12
- 239000002002 slurry Substances 0.000 description 11
- 238000004088 simulation Methods 0.000 description 6
- 239000011440 grout Substances 0.000 description 5
- 239000004568 cement Substances 0.000 description 4
- 238000007596 consolidation process Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 150000002148 esters Chemical class 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 238000012423 maintenance Methods 0.000 description 3
- RNMDNPCBIKJCQP-UHFFFAOYSA-N 5-nonyl-7-oxabicyclo[4.1.0]hepta-1,3,5-trien-2-ol Chemical compound C(CCCCCCCC)C1=C2C(=C(C=C1)O)O2 RNMDNPCBIKJCQP-UHFFFAOYSA-N 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 238000005553 drilling Methods 0.000 description 2
- 238000007654 immersion Methods 0.000 description 2
- 239000007787 solid Substances 0.000 description 2
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 description 1
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 description 1
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 description 1
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 description 1
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 description 1
- 239000005642 Oleic acid Substances 0.000 description 1
- 235000019484 Rapeseed oil Nutrition 0.000 description 1
- 239000004359 castor oil Substances 0.000 description 1
- 235000019438 castor oil Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 235000019197 fats Nutrition 0.000 description 1
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 description 1
- 229960004232 linoleic acid Drugs 0.000 description 1
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- WBHHMMIMDMUBKC-QJWNTBNXSA-N ricinoleic acid Chemical compound CCCCCC[C@@H](O)C\C=C/CCCCCCCC(O)=O WBHHMMIMDMUBKC-QJWNTBNXSA-N 0.000 description 1
- 229960003656 ricinoleic acid Drugs 0.000 description 1
- FEUQNCSVHBHROZ-UHFFFAOYSA-N ricinoleic acid Natural products CCCCCCC(O[Si](C)(C)C)CC=CCCCCCCCC(=O)OC FEUQNCSVHBHROZ-UHFFFAOYSA-N 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000003760 tallow Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Landscapes
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to a flushing fluid for oil-based mud cementing, which comprises a base oil and two surfactants with different molecular weights as main agents, and can also comprise polyoxyethylene ether of alkylphenol as a water wetting agent.
Description
The present invention relates to a kind of washing fluid that is used for oil base mud well-cementing.
When using the oil-base mud drilling well, can produce the oil base mud cake at the borehole wall and casing wall, the generation of this mud cake can make between the borehole wall and casing wall and the grout not glued, thereby has a strong impact on the quality of casing and cementing.In order to remove oil-base mud and oil base mud cake, improve the affinity at two interfaces, improve displacement efficiency, guarantee cementing quality, need to use the oil base mud well-cementing washing fluid to wash earlier, cement the well then.
The object of the present invention is to provide a kind of washing fluid that is used for oil base mud well-cementing, it has preferably rinse capability, simultaneously oil-base mud is had the effect of remarkable dilution viscosity reduction oil-base mud and mud cake.
Oil base mud well-cementing washing fluid of the present invention, its host is become by the Surfactant of a kind of base oil with two kinds of different molecular weights.Preferably, this base oil is that flash-point is higher than 70 ℃ refining diesel oil, and the tensio-active agent of described two kinds of different molecular weights is for having molecular formula RCOO (CH
2CH
2O)
nThe macrogol ester of the lipid acid of H, for the tensio-active agent of two kinds of different molecular weights, the n in the molecular formula is respectively 4-6 and 8-12.
According to oil base mud well-cementing washing fluid provided by the invention, except that the macrogol ester that uses base oil and lipid acid as the host, also can include molecular formula is RCO (CH
2CH
2O)
mThe Soxylat A 25-7 of the alkylphenol of H, m=7-12 in the formula.According to preferred version of the present invention, the content of described base oil is 60～80%, and the fatty acid polyglycol ester content of described two kinds of different molecular weights is 18～38%, and the polyethenoxy ether content of described alkylphenol is 1-5%, each component total amount and be 100%.
Alkyl in the Soxylat A 25-7 molecule of the alkylphenol described in the present invention is preferably C
6-C
12Alkyl.
More preferably, the content of the macrogol ester of the lipid acid of wherein said two kinds of different molecular weights is 1: 1, and the content of the macrogol ester of these two kinds of lipid acid in washing fluid is respectively 9-19% in other words.
Lipid acid in the fatty acid polyglycol ester of two kinds of different molecular weights of oil base mud well-cementing washing fluid component provided by the invention can be C
14-C
18Single fat acid for example oleic acid, linolic acid etc., also can be C
14-C
18Vegetables oil mixed fatty acid such as rapeseed oil fatty acid, soy(a)-bean oil fatty acid, Castor Oil Fatty Acid, fatty acid distribution of coconut oil etc., can also be C
14-C
18Animal oil mixed fatty acid such as lard lipid acid, tallow fatty acid etc., wherein preferred animal oil fatty acid.
Soxylat A 25-7 ROO (the CH of used alkylphenol among the present invention
2CH
2O)
mMainly as water-wetter, effect is to make the borehole wall by the glossy wet water-wet that changes into, joins in the host before normally using at the scene.
Washing fluid of the present invention is dissolved in the macrogol ester of two kinds of lipid acid in the base oil in the preparation, promptly becomes washing fluid host.Before on-the-spot the use, can use behind the Soxylat A 25-7 of adding alkylphenol, the add-on of the Soxylat A 25-7 of this alkylphenol is preferably 2% of washing fluid total amount.
Experimental result shows that well cementation oil-base mud of the present invention has rinse capability and developing result preferably with washing fluid to oil-base mud and mud cake, simultaneously oil-base mud is had the effect of significant dilution viscosity reduction.Specifically, well cementation oil-base mud of the present invention can reach 99% with washing fluid to simulation steel pipe flush efficiency, more than 70%, this mainly is because the hole of rock core inside absorbs a part of mud, so the flush efficiency of rock core is lower than steel pipe to the rock core flush efficiency.Glued fine between simulation steel pipe after the flushing and the grout and between rock core and the grout.
Further describe the present invention below by embodiment and experimental example, do not limit but practical range of the present invention is not constituted.
Embodiment 1
By lard acid polyoxyethylene ester (n=5) 14%, lard acid polyoxyethylene ester (n=10) 14%, flash-point mixes being made into washing fluid host at the diesel oil more than 70 ℃ 70%, adds polyoxyethylene nonylphenol ether (m=10) 2% during use and is made into irrigation.
Embodiment 2
By lard acid polyoxyethylene ester (n=5) 15%, ricinolic acid polyoxyethylene glycol ester (n=5) 15%, flash-point be at the refining diesel oil 67% more than 70 ℃, the washing fluid that polyoxyethylene nonylphenol ether (m=10) 3% is made into.
The experiment of experimental example 1 developing result
With diameter is the mould that 3.3 centimetres steel pipe is made simulation first interface (interface of sleeve pipe and grout), weighs before the test, immerses then in 60 ℃ of oil-base mud 24 hours, weighs after mentioning again, and calculates the weight of the oil-base mud that adheres to.To simulate steel pipe then and be fixed on the stirring arm of agitator, (rotating speed is determined that by up-hole velocity when up-hole velocity was 1.2m/min, rotating speed was 380 commentaries on classics/min, and when up-hole velocity was 0.8m/min, drilling speed was 250 commentaries on classics/min under fixed rotating speed with washing fluid.This experiment is washed under 120 commentaries on classics/min, and the high more effect of rotating speed is good more.), washed 10 minutes with the washing fluid of embodiment 1, weigh.
With different rock core simulation second contact surface (interface of rock core and grout), soak equally and wash, weigh.
With the developing result of " flushing rate " or " flush efficiency " expression washing fluid,
As shown in table 1 with the experimental result that embodiment 1 prescription is done.
Wash out the slurry flushing after the attached slurry amount flushing in slurry back of table 1 flush efficiency test sequence number original weight immersion oil and imitate remarks
(g) heavy (g) (g) weighs (g) and measures (g) rate (%) 1 steel 147.38 154.87 7.49 147.41 7.46 99 attached slurry 2 steel 253.99 262.08 8.09 254.05 8.03 99 attached slurry 3 steel 238.47 blank 4 steel, 128.94 133.94 5.00 129.00 4.94 99 attached slurry 5 steel 130.31 blank 1403 rock cores, 78.52 blank 928 rock cores, 80.28 blank 67 cores, 77.86 84.01 6.15 79.67 4.34 70 attached slurry 16 cores 80.52 85.64 5.12 82.04 3.6 71 attached slurry 19 cores 80.63 87.09 6.46 81.73 5.36 83 attached slurry 198 cores 79.13 85.34 6.21 80.38 4.96 80 attached slurries
The experiment of experimental example 2 consolidation strengths
To be placed in the suitable containers through simulation steel pipe and the rock core that experimental example 1 washed, fill cement at annular space, maintenance 24h in 60 ℃ water-bath takes out the back and do compressive strength test on pressing machine, calculates interface cementing strength.
(annotate: the reading of pressing machine is with pound * 10
2And pound * 10
3Represent.)
Experimental result is as shown in table 2.
The machine-readable several interface cementing strength remarks of table 2 boundary strength test number cement mantle cement mantle surface pressure
D * h amasss cm
2Lb Kg/cm
21 3.2×7.6 76.36 350 2.08 2 3.2×6.9 69.33 350 2.29 3 3.3×5.3 54.92 610 5.04 4 2.5×5.5 43.18 620 6.52 5 2.5×5.6 43.96 350 3.6 1403 2.5×4.4 34.54 250 3.28 928 2.5×4.5 35.33 150 1.93 16 2.5×4.5 35.33 300 3.86 675 2.5×4.5 35.33 450 5.6 198 2.5×4.3 33.76 180 2.43 6 3.3×6.8 70.46 0 0 7 3.2×6.9 69.33 0 0 1401 2.5×4.6 36.11 0 0 926 2.5×4.5 35.33 0 0 ：1.24，。
2. blank for steel pipe or rock core pollute without oil-base mud, elder generation's sand papering, then with the tap water flushing, and the solid water mud that directly carries out test.
3. attached slurry does not wash to simulating steel pipe and rock core and soaked in oil-base mud 24 hours, without the test of washing fluid flushing directly carrying out solid water mud.
Show by the consolidation strength test, 60 ℃ of maintenances of temperature 24 hours, maintenance was measured interface cementing strength after 12 hours under the normal temperature then, the mean value of its first interface and second contact surface consolidation strength is basic identical with the mean value of the interface cementing strength of the mould that did not soak in oil-base mud, and do not wash behind the immersion oil-base mud, the consolidation strength of simulation steel pipe and rock core all is zero, this shows that this washing fluid developing result is very desirable.
Claims (8)
1, a kind of oil base mud well-cementing washing fluid, its host is made up of the tensio-active agent of a kind of base oil and two kinds of different molecular weights.
2, oil base mud well-cementing washing fluid as claimed in claim 1, wherein said base oil are that flash-point is higher than 70 ℃ refining diesel oil, and the tensio-active agent of described two kinds of different molecular weights is for having molecular formula RCOO (CH
2CH
2O)
nThe macrogol ester of the lipid acid of H, the n in the molecular formula is respectively 4-6 and 8-12.
3, claim 1,2 described oil base mud well-cementing washing fluids, wherein also including molecular formula is RCO (CH
2CH
2O)
mThe Soxylat A 25-7 of the alkylphenol of H, m=7 in the formula～12.
4, oil base mud well-cementing washing fluid as claimed in claim 3, the content of wherein said base oil is 60～80%, the polyoxyethylene glycol ester content of described lipid acid is 18～38% weight, and the content of the Soxylat A 25-7 of described alkylphenol is 1-5% weight, each component total amount and be 100% weight.
5, as claim 1,2,4 described oil base mud well-cementing washing fluids, the content ratio of the macrogol ester of the lipid acid of wherein said two kinds of different molecular weights is 1: 1.
6, oil base mud well-cementing washing fluid as claimed in claim 3, the alkyl in the Soxylat A 25-7 molecule of wherein said alkylphenol is C
14-C
18Alkyl.
7, oil base mud well-cementing washing fluid as claimed in claim 2, the lipid acid in the fatty acid polyglycol ester of wherein said two kinds of different molecular weights are single fat acid, vegetables oil mixed fatty acid or animal oil mixed fatty acid.
8, well cementation oil-base mud washing fluid as claimed in claim 7, wherein, the fatty acid part in the fatty acid polyglycol ester is an animal oil fatty acid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011159081A CN1174075C (en) | 2001-04-30 | 2001-04-30 | Flushing fluid for oil-based mud well cementation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB011159081A CN1174075C (en) | 2001-04-30 | 2001-04-30 | Flushing fluid for oil-based mud well cementation |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1329126A true CN1329126A (en) | 2002-01-02 |
| CN1174075C CN1174075C (en) | 2004-11-03 |
Family
ID=4662274
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB011159081A Expired - Fee Related CN1174075C (en) | 2001-04-30 | 2001-04-30 | Flushing fluid for oil-based mud well cementation |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1174075C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102076809A (en) * | 2008-06-26 | 2011-05-25 | 贝克休斯公司 | Method for changing wettability of rock formations |
| CN101544884B (en) * | 2009-05-07 | 2011-08-03 | 中国石油天然气股份有限公司 | Foam washing fluid and preparation method thereof |
| CN103555306A (en) * | 2013-11-07 | 2014-02-05 | 山东大学 | Oil-based mud flushing fluid suitable for high temperature high salt environment and preparation method of oil-based mud flushing fluid |
| CN101730729B (en) * | 2007-06-14 | 2014-06-11 | 艾尼股份公司 | Water-based fluid for preventing the formation of w/o emulsions or for resolving w/o emulsions already formed in porous matrices |
| CN104277805A (en) * | 2013-07-03 | 2015-01-14 | 中国石油化工集团公司 | Filter cake cleaning fluid and preparation method thereof |
| CN104745165A (en) * | 2015-02-25 | 2015-07-01 | 中国石油集团渤海钻探工程有限公司 | Salty flushing fluid for well cementation and preparation method thereof |
| CN104910885A (en) * | 2015-04-21 | 2015-09-16 | 成都欧美克石油科技有限公司 | Anionic-nonionic composite efficient flushing fluid and preparation method thereof |
| CN107603576A (en) * | 2017-07-27 | 2018-01-19 | 中国海洋石油总公司 | A kind of well cementation oil-based mud flushing liquor and its preparation and evaluation method |
| 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 |
| CN115725277A (en) * | 2021-08-30 | 2023-03-03 | 中国石油天然气集团有限公司 | Viscosity reducer for oil-based drilling fluid and preparation method thereof |
| CN115895625A (en) * | 2022-12-24 | 2023-04-04 | 成都华阳兴华化工有限公司 | Oil-based drilling fluid flushing agent for well cementation and preparation method thereof |
-
2001
- 2001-04-30 CN CNB011159081A patent/CN1174075C/en not_active Expired - Fee Related
Cited By (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101730729B (en) * | 2007-06-14 | 2014-06-11 | 艾尼股份公司 | Water-based fluid for preventing the formation of w/o emulsions or for resolving w/o emulsions already formed in porous matrices |
| CN102076809A (en) * | 2008-06-26 | 2011-05-25 | 贝克休斯公司 | Method for changing wettability of rock formations |
| CN102076809B (en) * | 2008-06-26 | 2014-08-13 | 贝克休斯公司 | Method for changing wettability of rock formations |
| CN101544884B (en) * | 2009-05-07 | 2011-08-03 | 中国石油天然气股份有限公司 | Foam washing fluid and preparation method thereof |
| CN104277805B (en) * | 2013-07-03 | 2017-02-15 | 中国石油化工集团公司 | Filter cake cleaning fluid and preparation method thereof |
| CN104277805A (en) * | 2013-07-03 | 2015-01-14 | 中国石油化工集团公司 | Filter cake cleaning fluid and preparation method thereof |
| CN103555306B (en) * | 2013-11-07 | 2015-12-09 | 山东大学 | A kind ofly be applicable to oil-based mud flushing liquor of high temperature and high salt environment and preparation method thereof |
| CN103555306A (en) * | 2013-11-07 | 2014-02-05 | 山东大学 | Oil-based mud flushing fluid suitable for high temperature high salt environment and preparation method of oil-based mud flushing fluid |
| CN104745165A (en) * | 2015-02-25 | 2015-07-01 | 中国石油集团渤海钻探工程有限公司 | Salty flushing fluid for well cementation and preparation method thereof |
| CN104745165B (en) * | 2015-02-25 | 2018-03-13 | 中国石油集团渤海钻探工程有限公司 | Well cementation saliferous flushing liquor and preparation method thereof |
| CN104910885A (en) * | 2015-04-21 | 2015-09-16 | 成都欧美克石油科技有限公司 | Anionic-nonionic composite efficient flushing fluid and preparation method thereof |
| CN104910885B (en) * | 2015-04-21 | 2017-09-12 | 成都欧美克石油科技股份有限公司 | Anionic and nonionic composite highly effective flushing liquor and preparation method thereof |
| CN107603576A (en) * | 2017-07-27 | 2018-01-19 | 中国海洋石油总公司 | A kind of well cementation oil-based mud flushing liquor and its preparation and evaluation method |
| CN107603576B (en) * | 2017-07-27 | 2020-11-24 | 中国海洋石油集团有限公司 | Oil-based mud flushing fluid for well cementation and preparation and evaluation methods thereof |
| 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 |
| CN115725277A (en) * | 2021-08-30 | 2023-03-03 | 中国石油天然气集团有限公司 | Viscosity reducer for oil-based drilling fluid and preparation method thereof |
| CN115725277B (en) * | 2021-08-30 | 2023-12-08 | 中国石油天然气集团有限公司 | Viscosity reducer for oil-based drilling fluid and preparation method thereof |
| CN115895625A (en) * | 2022-12-24 | 2023-04-04 | 成都华阳兴华化工有限公司 | Oil-based drilling fluid flushing agent for well cementation and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1174075C (en) | 2004-11-03 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US5585333A (en) | Hydrocarbon base cementitious drilling fluids and methods | |
| CN1329126A (en) | Flushing fluid for oil-based mud well cementation | |
| CN103492525B (en) | Compositions and the method for well is cleaned before well cementation | |
| CN107603576B (en) | Oil-based mud flushing fluid for well cementation and preparation and evaluation methods thereof | |
| CN103224774B (en) | Tensio-active agent is the economic benefits and social benefits Cementing of suspension agent | |
| CN104011170A (en) | Cement oil-based mud spacer formulation | |
| CN101544884B (en) | Foam washing fluid and preparation method thereof | |
| CN103642475A (en) | Washing agent for wash oil for well cementation and preparation method thereof | |
| CN104263339A (en) | Oil-based drilling fluid shaft completion cleaning fluid and preparation method thereof | |
| CA2580012A1 (en) | Subterranean fluids having improved environmental characteristics and methods of using these fluids in subterranean formations | |
| CN106085395A (en) | A kind of microemulsion-type flushing liquor system being applicable to oil base drilling fluid and preparation method | |
| CN104830298A (en) | Water-based emulsion composite blocking remover | |
| CN104910885A (en) | Anionic-nonionic composite efficient flushing fluid and preparation method thereof | |
| CN105315978A (en) | Well cementation oil-based slurry flushing liquid and preparation method thereof | |
| CN107474814A (en) | A kind of emulsion-type oil base mud cleans liquid and preparation method thereof | |
| CN104418965B (en) | Preparation method, well cementation self-healing cement mortar and the application of oil-well cement self-healing mixture | |
| CN103555306B (en) | A kind ofly be applicable to oil-based mud flushing liquor of high temperature and high salt environment and preparation method thereof | |
| CN113999658A (en) | Oleophilic cement slurry capable of improving packing performance of oil-containing well cementation interface | |
| CN106634914A (en) | Working fluid system applicable to water-base drilling fluid filter cake removal before well cementing | |
| CN107987819B (en) | Low-toxicity and low-foam oil-based mud flushing agent for well cementation and preparation method thereof | |
| EP2855620A1 (en) | Methods of using oil-based wellbore cement compositions | |
| CN110452673A (en) | A kind of efficient displacement of reservoir oil cleaning solution used under suitable oil base drilling fluid environment | |
| CN1209439C (en) | Oil-based mud flushing liquor and preparation method thereof | |
| CN106367050B (en) | Ultra-high temperature resistant flushing fluid for high-density oil-based drilling fluid and preparation method thereof | |
| JP2009161373A (en) | Cement slurry composition |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C06 | Publication | ||
| PB01 | Publication | ||
| ASS | Succession or assignment of patent right |
Owner name: ZHONGHAI OIL FIELD SERVICE CO., LTD. Free format text: FORMER OWNER: ZHONGHAI PETROLEUM TECHNOLOGY SERVICE CO. Effective date: 20020614 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20020614 Address after: 101149 mailbox 232, Beijing City Applicant after: Zhonghai Oil Field Service Co., Ltd. Address before: 101149 mailbox 232, Beijing City Applicant before: Zhonghai Petroleum Technology Science Co. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: COSL Chemicals (Tianjin) Co., Ltd. Assignor: China Oilfield Services Limited Contract fulfillment period: 2008.2.1 to 2023.1.1 contract change Contract record no.: 2008990000064 Denomination of invention: Oil base mud well-cementing flushing fluid Granted publication date: 20041103 License type: General permission Record date: 2008.4.7 |
|
| LIC | Patent licence contract for exploitation submitted for record |
Free format text: COMMON LICENCE; TIME LIMIT OF IMPLEMENTING CONTACT: 2008.2.1 TO 2023.1.1 Name of requester: TIANJIN COSL CHEMICAL CO., LTD. Effective date: 20080407 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20041103 Termination date: 20160430 |