CN104762069A - Preparation method and application of ultrahigh-density micro-powder weighting agent used for drilling fluid - Google Patents
Preparation method and application of ultrahigh-density micro-powder weighting agent used for drilling fluid Download PDFInfo
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- CN104762069A CN104762069A CN201510118605.5A CN201510118605A CN104762069A CN 104762069 A CN104762069 A CN 104762069A CN 201510118605 A CN201510118605 A CN 201510118605A CN 104762069 A CN104762069 A CN 104762069A
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- 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
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/16—Clay-containing compositions characterised by the inorganic compounds other than clay
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- 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
- C09K8/02—Well-drilling compositions
- C09K8/04—Aqueous well-drilling compositions
- C09K8/14—Clay-containing compositions
- C09K8/18—Clay-containing compositions characterised by the organic compounds
- C09K8/22—Synthetic organic compounds
- C09K8/24—Polymers
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- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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Abstract
The invention relates to a preparation method and an application of an ultrahigh-density micro-powder weighting agent used for a drilling fluid. The ultrahigh-density micro-powder weighting agent is composed of following components, by weight: 70-90 parts of a weighting agent, 15-30 parts of an organic solvent, 20-30 parts of a water solution, 2-7 parts of a surfactant and 5-9 parts of a co-surfactant. A main chemical component of the weighting agent is iron powder or a compound of iron. The weighting agent is higher than 6.5 g/cm<3> in density and is far higher than a conventional weighting agent, such as barite powder and the like, in the prior art in specific gravity. The weighting agent is less than 35 [mu]m in particle size D90, has approximate spherical shape and appearance, is excellent in dispersibility and suspension property and has a good compatibility performance with the drilling fluid. With the weighting agent, an ultrahigh-density drilling fluid is excellent in rheological property and stability, which can satisfy a requirement on the ultrahigh-density drilling fluid in deep and complex wells.
Description
Technical field
The present invention relates to a kind of weighting agent of Oil-Gas Well Engineering field, particularly a kind of preparation method of drilling fluid super-high density powder body weighting agent and purposes.
Background technology
Current, China's Shallow Oil-Gas resource reserve is day by day exhausted because of exploitation for many years, force us that exploration targets is turned to deep formation resource, but along with the raising of drilling depth, various bad ground met by unavoidable brill, as NE Sichuan gas field, high pressure oil field, Tarim Oilfield carat area, port owned by the government plate, Qinghai Oil Field is at No. seven, the cold air lake structure in the Caidamu Basin, south, Xinjiang region edge piedmont tectonic belts, and South China Sea Oilfield and overseas Kazakhstan, Uzbekistan, the projects such as Azerbaijan, high-pressure gas reservoir met by frequent brill, high pressured slatwater layer, sometimes also bore bad grounds such as meeting saline and alkaline layer simultaneously, need to use high performance high-density drilling well drilling fluid and high-density cementing slurry.
Domestic high density drilling fluid still adopts the method for weighting agent substantially, and the main raw of weighting agent mostly is barite, rhombohedral iron ore etc.The people such as Chiligcrian GV think that the bar duplicate limit that adds can reach 2.64 g/cm
3, exceeding this limit, by irreconcilable, there is the difficulty of attending to one thing and lose sight of another in the contradiction between the rheological of drilling fluid and sedimentation stability.At present, weighting agent on domestic market adopts traditional ball-milling technology to complete mostly, because the weighting agent strength of materials is high, general ball mill adds man-hour, fineness < 150 order, particle size distribution is discrete, and type looks are mainly with sheet, bar-shaped in the majority, more in actual applications, there is rheological difference in the mud prepared, slurry instability, free settling etc. become the key issue of preparation high density drilling fluid, simultaneously also more difficultly meet higher density (2.6 ~ 2.8g/cm
3) design requirements of drilling fluid.
The regulation and control of high density drilling fluid rheological are the difficult points of deep-well and ultra-deep well drilling liquid Technology always.Since 21 century, be solve high density drilling fluid rheological regulation and control problem at high temperature, foreign study large quantities of novel high temperature resistance treatment agents and novel high-density weighting material.
Baker Hughes Inc uses patent high-density weighting material---Micromax, and have developed a kind of invert emulsion mud.This high-density weighting material is manganese tetraoxide, and compared with barite particle, manganese tetraoxide has the advantages that particle diameter is little, particle is spherical in shape.Because the intergranular friction of spheroidal particle is very little, therefore the plastic viscosity of drilling fluid significantly reduces.Although the density ratio barite of manganese tetraoxide is much bigger, the size of its particle is more much smaller than barite, this just mean these particles can support by the drilling fluid of weak structure, the risk of sedimentation can not be increased under lower yield value simultaneously.Micromax can improve the rheological property of drilling fluid, reduces the trend of high-density weighting material generation sedimentation simultaneously, can use in hp-ht well and small hole.For hp-ht well, alleviate Subsidence trend and reduce plastic viscosity and significantly can shorten rig time, reduce Underwell leakage.The development of continuous-tube drilling well and through-tubing drilling is also for the use of this drilling fluid provides potential market.From the angle of health and safety, the problem brought due to fine particle size and dust can by avoiding high-density weighting material and drilling fluid mixed in advance.Manganse Dioxide high-density weighting material can use in the drilling fluid that viscosity is low, also can not cause sedimentation, but the cost of drilling fluid that manganese tetraoxide increases the weight of is higher.At present, the domestic report that yet there are no the investigation and application of manganese tetraoxide weighted drilling fluid.
Therefore, prior art needs further to improve and develop, and particularly carries out the perfect of necessity to the complete processing of weighting agent.
Summary of the invention
Object of the present invention is exactly in view of the foregoing defects the prior art has, provides a kind of preparation method and purposes of drilling fluid super-high density powder body weighting agent, to improve drilling fluid density, solves the problems such as high density drilling fluid rheological is poor, free settling.
A preparation method for drilling fluid super-high density powder body weighting agent, comprises the steps:
First, weighting agent material use physical method is carried out superfine grinding purification; In described reaction vessel, add organic solvent, water, tensio-active agent and cosurfactant successively again and stir 30min to 1h, obtained described super-high density powder body weighting agent after carrying out fully reaction; According to weight part, above-mentioned each reactant is: weighting agent: 70-90, organic solvent: 15-30, the aqueous solution: 20-30, tensio-active agent: 2-7, cosurfactant 5-9; Wherein, weighting agent adopts the compound of iron powder or iron, and described organic solvent is C6-C8 straight chain hydrocarbon or naphthenic hydrocarbon, and described tensio-active agent is sulfosuccinate sodium or sodium lauryl sulphate, and described cosurfactant is fatty alcohol.
The density of above-mentioned weighting agent is greater than 6.5g/cm
3, fineness D
90be less than 35 μm, there are the grain type, the grain looks that are tending towards ball-type.
Above-mentioned weighting agent is through retrofit.
The drilling fluid super-high density powder body weighting agent that the present invention mentions prepares ultrahigh-density water-base drilling fluid, and its preparation method is:
By weight: 1000 parts, water, drilling fluid wilkinite 15-20 part, sodium carbonate 0.5-2 part, tackifier 3-10 part, amine inhibitor 5-15 part, fluid loss agent 30-50 part, shutoff anti-sloughing agent 20-30 part, lubricant 20-30 part, tensio-active agent 3-5 part, super-high density powder body weighting agent: need to add according to density, described water is fresh water;
Stir in cup at height and add fresh water, open stirrer, under 4000r/min, add said components while stirring, increase the weight of to density 2.50g/cm3 with super-high density powder body weighting agent after stirring.
Above-mentioned tackifier are one or more in polyacrylamide PAM, polyacrylamide sylvite, XC biological polymer, co-polymer of sulfonate.
Above-mentioned amine inhibitor is one or more in polyamine, amido polyalcohols, amido silanol.
Above-mentioned fluid loss agent is one or more in potassium humate, Sodium salts humic acids, humic acids carboxymethylated product, humic acids sulfonated products, sulfonated lignite resin, sulfonated-pheno-formoldehyde resin, anti-temperature starch.
Above-mentioned shutoff anti-sloughing agent is one or more in aluminium base polymkeric substance anti-sloughing agent, polylol caving inhibitor, oxidized bitumen, sulfonated gilsonite, emulsified olefin.
Above-mentioned lubricant is one or more in white oil lubricant, polymeric alcohol lubricant, full oil lubricant, Graphite Powder 99.
Above-mentioned tensio-active agent is one or more in Span-80, tween-80, cetyl trimethylammonium bromide.
The invention has the beneficial effects as follows: (1) super-high density powder body of the present invention weighting agent density is greater than 6.5g/cm
3, much larger than conventional weighting agents such as ground barium sulfates, be 4.2 g/cm with density
3barite compare, with this weighting agent, drilling fluid is increased the weight of to 2.6g/cm
3, its solid load is only the former 60%, and solid load lower after increasing the weight of is conducive to regulation and control rheological on the one hand and improves drilling speed; The cost recovery of high-density weighting material can be reduced on the other hand, have higher economic benefit.(2) super-high density powder body weighting agent product of the present invention is tending towards grain type, the grain looks of ball-type, particle diameter is less than conventional weighting agent, there is good dispersiveness, suspension, good with drilling fluid compatibleness, adopt its super-high density drilling fluid allotted as weighting agent to have good rheological and stability, the requirement of deep-well Holes of Complicated Wells to super-high density drilling fluid can be met.(3) super-high density powder body weighting agent acidification rate of the present invention reaches 94.5%, can realize the acidification to dispel block of reservoir, be conducive to reservoir protec-tion.(4) preparation method of the present invention is simple, and reaction conditions is gentle, easy to operate, is easy to large-scale industrial production.
Embodiment
embodiment 1: the preparation of super-high density powder body weighting agent:
80g is joined in 1000mL container through the iron powder of ultra micro efflorescence or the compound of iron, adds 20mLC successively subsequently
6naphthenic hydrocarbon, 20mL water, 5g sulfosuccinate sodium, 6g fatty alcohol.Stir 30min to 1h, utilize mini-emulsion process, obtained powder weighting agent microparticle sol after carrying out abundant reaction, eventually passes separating, washing and drying, produces super-high density powder body weighting agent.
scheme 1, utilizes super-high density powder body weighting agent of the present invention to prepare the compound method 1 of ultrahigh-density water-base drilling fluid:
Stir in cup at height and add 1000mL fresh water, open stirrer, under 4000r/min, add 20g sodium bentonite, 2g sodium carbonate, 3g co-polymer of sulfonate, 10g amido polyalcohols, 20g sulfonated lignite resin (SPNH), 50g sulfonated phenol formaldehyde resin (SMP-II), 25g oxidized bitumen and the aluminium base polymkeric substance anti-sloughing agent of 10g, 20g white oil lubricant, 5g tween-80 while stirring, increase the weight of to density 2.50g/cm with super-high density powder body weighting agent after stirring
3.
scheme 2, utilizes super-high density powder body weighting agent of the present invention to prepare the compound method 2 of ultrahigh-density water-base drilling fluid:
Stir in cup at height and add 1000mL fresh water, open stirrer, under 4000r/min, add 20g sodium bentonite, 2g sodium carbonate, 10g polyacrylamide sylvite, 10g polyamine, 25g sulfonated lignite resin (SPNH), 50g sulfonated phenol formaldehyde resin (SMP-II), 15g oxidized bitumen and the aluminium base polymkeric substance anti-sloughing agent of 15g, 30g white oil lubricant, 5g tensio-active agent SP-80 while stirring, increase the weight of to density 2.80g/cm with super-high density powder body weighting agent after stirring
3.
Below the effect in embodiment is described.
super-high density powder body weighting agent performance evaluation prepared in embodiment 1
table 1: super-high density powder body weighting agent performance evaluation prepared in embodiment 1
| Project | Density/(g/cm 3) | Particle diameter D 90/μm | Particle diameter D 50/μm | Acidification rate/% |
| Performance index | 6.60 | 28.37 | 13.83 | 94.5 |
As can be seen from Table 1: super-high density powder body weighting agent density of the present invention is far above conventional weighting agent ground barium sulfate; Particle diameter D
90and D
50value is then less than conventional weighting agent ground barium sulfate; Higher density and less particle diameter, will contribute to the good high density drilling fluid of preparation performance.And this weighting agent acidification rate reaches 94.5%, be conducive to the acidification to dispel block realizing reservoir.
ultrahigh-density water-base drilling fluid performance evaluation prepared in embodiment 1
table 2: ultrahigh-density water-base drilling fluid performance evaluation prepared in embodiment 2 and 3
As can be seen from Table 2: adopt super-high density weighting agent of the present invention as the ultrahigh-density water-base drilling fluid of weighting agent at density 2.50 g/cm
3with 2.80 g/cm
3under, have good rheological property and sedimentation stability, aging through 150 DEG C/16h, the rheological property of drilling fluid system and filter loss change not quite, still remain on good level, illustrate that this system has good high-temperature resistance.
embodiment 2: the preparation of super-high density powder body weighting agent:
70g is joined in 1000mL container through the iron powder of ultra micro efflorescence or the compound of iron, adds 15mLC successively subsequently
6straight chain hydrocarbon, 20mL water, 2g sulfosuccinate sodium, 5g fatty alcohol.Stir 30min to 1h, utilize mini-emulsion process, obtained powder weighting agent microparticle sol after carrying out abundant reaction, eventually passes separating, washing and drying, produces super-high density powder body weighting agent.
scheme 3, utilizes super-high density powder body weighting agent of the present invention to prepare the compound method 1 of ultrahigh-density water-base drilling fluid:
Stir in cup at height and add 1000mL fresh water, open stirrer, under 4000r/min, add 15g sodium bentonite, 0.5g sodium carbonate, 3g polyacrylamide PAM, 5g polyamine, 30g potassium humate or Sodium salts humic acids, 20g oxidized bitumen, 20g polymeric alcohol lubricant, 3g Span-80 while stirring, increase the weight of to density 2.50g/cm with super-high density powder body weighting agent after stirring
3.
scheme 4, utilizes super-high density powder body weighting agent of the present invention to prepare the compound method 2 of ultrahigh-density water-base drilling fluid:
Stir in cup at height and add 1000mL fresh water, open stirrer, under 4000r/min, add 15g sodium bentonite, 2g sodium carbonate, 10g XC biological polymer, 15g amido silanol, 50g sulfonated-pheno-formoldehyde resin, 30g polylol caving inhibitor, the full oil lubricant of 30g, 5g cetyl trimethylammonium bromide while stirring, increase the weight of to density 2.80g/cm with super-high density powder body weighting agent after stirring
3.
Below the effect in embodiment is described.
super-high density powder body weighting agent performance evaluation prepared in embodiment 1
table 1: super-high density powder body weighting agent performance evaluation prepared in embodiment 1
| Project | Density/(g/cm 3) | Particle diameter D 90/μm | Particle diameter D 50/μm | Acidification rate/% |
| Performance index | 6.60 | 28.37 | 13.83 | 94.5 |
As can be seen from Table 1: super-high density powder body weighting agent density of the present invention is far above conventional weighting agent ground barium sulfate; Particle diameter D
90and D
50value is then less than conventional weighting agent ground barium sulfate; Higher density and less particle diameter, will contribute to the good high density drilling fluid of preparation performance.And this weighting agent acidification rate reaches 94.5%, be conducive to the acidification to dispel block realizing reservoir.
ultrahigh-density water-base drilling fluid performance evaluation prepared in embodiment 1
table 2: ultrahigh-density water-base drilling fluid performance evaluation prepared in embodiment 2 and 3
As can be seen from Table 2: adopt super-high density weighting agent of the present invention as the ultrahigh-density water-base drilling fluid of weighting agent at density 2.50 g/cm
3with 2.80 g/cm
3under, have good rheological property and sedimentation stability, aging through 150 DEG C/16h, the rheological property of drilling fluid system and filter loss change not quite, still remain on good level, illustrate that this system has good high-temperature resistance.
embodiment 3: the preparation of super-high density powder body weighting agent:
90g is joined in 1000mL container through the iron powder of ultra micro efflorescence or the compound of iron, adds 30mLC successively subsequently
6naphthenic hydrocarbon, 30mL water, 7g sodium lauryl sulphate, 7g fatty alcohol.Stir 30min to 1h, utilize mini-emulsion process, obtained powder weighting agent microparticle sol after carrying out abundant reaction, eventually passes separating, washing and drying, produces super-high density powder body weighting agent.
scheme 5, utilizes super-high density powder body weighting agent of the present invention to prepare the compound method 1 of ultrahigh-density water-base drilling fluid:
Stir in cup at height and add 1000mL fresh water, open stirrer, under 4000r/min, add 20g sodium bentonite, 2g sodium carbonate, 3g co-polymer of sulfonate, 10g amido silanol, 20g anti-temperature starch, 50g Sodium salts humic acids, 10g emulsified olefin and 10g polylol caving inhibitor, the full oil lubricant of 20g, 5g cetyl trimethylammonium bromide while stirring, increase the weight of to density 2.50g/cm with super-high density powder body weighting agent after stirring
3.
scheme 6, utilizes super-high density powder body weighting agent of the present invention to prepare the compound method 2 of ultrahigh-density water-base drilling fluid:
Stir in cup at height and add 1000mL fresh water, open stirrer, under 4000r/min, add 15g sodium bentonite, 2g sodium carbonate, 2g co-polymer of sulfonate, 10g polyamine, 25g sulfonated lignite resin (SPNH), 50g sulfonated phenol formaldehyde resin (SMP-II), 15g sulfonated gilsonite and the aluminium base polymkeric substance anti-sloughing agent of 15g, 30g polymeric alcohol lubricant, 5g tween-80 while stirring, increase the weight of to density 2.80g/cm with super-high density powder body weighting agent after stirring
3.
Below the effect in embodiment is described.
super-high density powder body weighting agent performance evaluation prepared in embodiment 1
table 1: super-high density powder body weighting agent performance evaluation prepared in embodiment 1
As can be seen from Table 1: super-high density powder body weighting agent density of the present invention is far above conventional weighting agent ground barium sulfate; Particle diameter D
90and D
50value is then less than conventional weighting agent ground barium sulfate; Higher density and less particle diameter, will contribute to the good high density drilling fluid of preparation performance.And this weighting agent acidification rate reaches 94.5%, be conducive to the acidification to dispel block realizing reservoir.
ultrahigh-density water-base drilling fluid performance evaluation prepared in embodiment 1
table 2: ultrahigh-density water-base drilling fluid performance evaluation prepared in embodiment 2 and 3
As can be seen from Table 2: adopt super-high density weighting agent of the present invention as the ultrahigh-density water-base drilling fluid of weighting agent at density 2.50 g/cm
3with 2.80 g/cm
3under, have good rheological property and sedimentation stability, aging through 150 DEG C/16h, the rheological property of drilling fluid system and filter loss change not quite, still remain on good level, illustrate that this system has good high-temperature resistance.
Claims (10)
1. a drilling fluid preparation method for super-high density powder body weighting agent, is characterized in that, comprise the steps:
First, weighting agent material use physical method is carried out superfine grinding purification; In described reaction vessel, add organic solvent, water, tensio-active agent and cosurfactant successively again and stir 30min to 1h, obtained described super-high density powder body weighting agent after carrying out fully reaction; According to weight part, above-mentioned each reactant is: weighting agent: 70-90, organic solvent: 15-30, the aqueous solution: 20-30, tensio-active agent: 2-7, cosurfactant 5-9; Wherein, weighting agent adopts the compound of iron powder or iron, and described organic solvent is C6-C8 straight chain hydrocarbon or naphthenic hydrocarbon, and described tensio-active agent is sulfosuccinate sodium or sodium lauryl sulphate, and described cosurfactant is fatty alcohol.
2. the preparation method of drilling fluid super-high density powder body weighting agent according to claim 1, is characterized in that: the density of described weighting agent is greater than 6.5g/cm
3, fineness D
90be less than 35 μm, there are the grain type, the grain looks that are tending towards ball-type.
3. the preparation method of drilling fluid super-high density powder body weighting agent according to claim 1 and 2, is characterized in that: described weighting agent is through retrofit.
4. utilize the drilling fluid super-high density powder body weighting agent described in claim 1 or 2 to prepare a ultrahigh-density water-base drilling fluid, it is characterized in that, its preparation method is:
By weight: 1000 parts, water, drilling fluid wilkinite 15-20 part, sodium carbonate 0.5-2 part, tackifier 3-10 part, amine inhibitor 5-15 part, fluid loss agent 30-50 part, shutoff anti-sloughing agent 20-30 part, lubricant 20-30 part, tensio-active agent 3-5 part, super-high density powder body weighting agent: need to add according to density, described water is fresh water;
Stir in cup at height and add fresh water, open stirrer, under 4000r/min, add said components while stirring, increase the weight of to density 2.50g/cm3 with super-high density powder body weighting agent after stirring.
5. drilling fluid super-high density powder body weighting agent according to claim 4 prepares ultrahigh-density water-base drilling fluid, it is characterized in that: described tackifier are one or more in polyacrylamide PAM, polyacrylamide sylvite, XC biological polymer, co-polymer of sulfonate.
6. drilling fluid super-high density powder body weighting agent according to claim 4 prepares ultrahigh-density water-base drilling fluid, it is characterized in that: described amine inhibitor is one or more in polyamine, amido polyalcohols, amido silanol.
7. drilling fluid super-high density powder body weighting agent according to claim 4 prepares ultrahigh-density water-base drilling fluid, it is characterized in that: described fluid loss agent is one or more in potassium humate, Sodium salts humic acids, sulfonated lignite resin, sulfonated-pheno-formoldehyde resin, anti-temperature starch.
8. drilling fluid super-high density powder body weighting agent according to claim 4 prepares ultrahigh-density water-base drilling fluid, it is characterized in that: described shutoff anti-sloughing agent is one or more in aluminium base polymkeric substance anti-sloughing agent, polylol caving inhibitor, oxidized bitumen, sulfonated gilsonite, emulsified olefin.
9. drilling fluid super-high density powder body weighting agent according to claim 4 prepares ultrahigh-density water-base drilling fluid, it is characterized in that: described lubricant is one or more in white oil lubricant, polymeric alcohol lubricant, full oil lubricant, Graphite Powder 99.
10. drilling fluid super-high density powder body weighting agent according to claim 4 prepares ultrahigh-density water-base drilling fluid, it is characterized in that: described tensio-active agent is one or more in Span-80, tween-80, cetyl trimethylammonium bromide.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273697A (en) * | 2015-11-05 | 2016-01-27 | 中石化石油工程技术服务有限公司 | Micron weighted drilling fluid |
| CN105670578A (en) * | 2016-02-22 | 2016-06-15 | 中石化石油工程技术服务有限公司 | Silicon amino drilling fluid and preparation method thereof |
| CN106190062A (en) * | 2016-06-28 | 2016-12-07 | 长江大学 | A kind of preparation method of drilling fluid poly-organosilicon amine inhibitors |
| CN106753280A (en) * | 2016-12-30 | 2017-05-31 | 天津泽希矿产加工有限公司 | A kind of spherical alumina iron and spherical alumina iron are the VHD drilling fluid of heavy weight additive |
| CN108774502A (en) * | 2018-05-17 | 2018-11-09 | 中国海洋石油集团有限公司 | A kind of exacerbation system and its application, preparation method |
| CN115725276A (en) * | 2021-08-31 | 2023-03-03 | 中国石油化工股份有限公司 | Acid-soluble low-erosion ultramicro-weighted drilling fluid system and preparation method and application thereof |
-
2015
- 2015-03-18 CN CN201510118605.5A patent/CN104762069A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105273697A (en) * | 2015-11-05 | 2016-01-27 | 中石化石油工程技术服务有限公司 | Micron weighted drilling fluid |
| CN105670578A (en) * | 2016-02-22 | 2016-06-15 | 中石化石油工程技术服务有限公司 | Silicon amino drilling fluid and preparation method thereof |
| CN105670578B (en) * | 2016-02-22 | 2018-11-27 | 中石化石油工程技术服务有限公司 | A kind of silicon amine base drilling fluids and preparation method thereof |
| CN106190062A (en) * | 2016-06-28 | 2016-12-07 | 长江大学 | A kind of preparation method of drilling fluid poly-organosilicon amine inhibitors |
| CN106753280A (en) * | 2016-12-30 | 2017-05-31 | 天津泽希矿产加工有限公司 | A kind of spherical alumina iron and spherical alumina iron are the VHD drilling fluid of heavy weight additive |
| CN108774502A (en) * | 2018-05-17 | 2018-11-09 | 中国海洋石油集团有限公司 | A kind of exacerbation system and its application, preparation method |
| CN115725276A (en) * | 2021-08-31 | 2023-03-03 | 中国石油化工股份有限公司 | Acid-soluble low-erosion ultramicro-weighted drilling fluid system and preparation method and application thereof |
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