CN107652952A - A kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof - Google Patents
A kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof Download PDFInfo
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- CN107652952A CN107652952A CN201710892844.5A CN201710892844A CN107652952A CN 107652952 A CN107652952 A CN 107652952A CN 201710892844 A CN201710892844 A CN 201710892844A CN 107652952 A CN107652952 A CN 107652952A
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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
- C09K8/02—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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- 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
- C09K8/02—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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- 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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/10—Nanoparticle-containing well treatment fluids
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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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
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/34—Lubricant additives
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Abstract
The invention provides a kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof, its drilling fluid is by water, bentonite, caustic soda, multi-functional complexing agent, middle-molecular-weihydroxyethyl fluid loss agent, efficient coating agent, anti sinking lubricant, block fluid loss additive, inhibitor, nanometer sealing agent and speed-raising lubricant are uniformly mixed, it is to add the bentonite 0.7g 1.0g per in 100mL water that it, which is formulated, caustic soda 0.7g 1.0g, the multi-functional 2g of complexing agent 1.5, middle-molecular-weihydroxyethyl fluid loss agent 0.7g 1.5g, efficient coating agent 0.1g 0.3g, anti sinking lubricant 2g 4g, block fluid loss additive 1g 2g, inhibitor 2g 4g, nanometer sealing agent 2g 4g, raise speed lubricant 2g 4g, barite 30g 200g.Drilling well liquid product of the present invention have long horizontal sections shale borehole wall stability, low-shear rate viscosity are high, prop-carrying capacity is strong, closure microcrack ability is strong, lubricity is good, filter loss is low, cost is low, extemporaneous preparation safeguard it is simple efficiently, bio-toxicity is low, produces water base drilling cuttings the characteristic such as can directly discharge.
Description
Technical field
The present invention relates to chemical products manufacturing technology field, and in particular to a kind of high-performance of suitable shale gas long horizontal sections
Water-base drilling fluid and preparation method thereof.
Background technology
With new《Law on Environmental Protection》Implement, the requirement influenceed for oil-based drill cuttings environment is also stricter.Oil patch
According to《National Hazard waste register》, the register of danger wastes has been included in, it is managed and disposal need to be according to danger wastes
Relevant regulations perform.
Obviously, either environmentally friendly risk or cost disadvantage, shale gas sustainable development will all be turned into by being doomed oil base drilling fluid
Exhibition " can not bear weight ", want to complete shale gas sustainable development, it is necessary to capture the difficulty of water-base drilling fluid.
For the shale gas demonstration area of sinopec national level Fuling, since being developed into deep layer shale gas, Fuling shale
Gas is developed the southern wing constructed to burnt masonry dam and developed, and the leakage problem in understratum Longma small stream group, five peak group drilling processes is all the more
It is prominent.The environmentally friendly laws and regulations and the high leakage equivalent risk of new developing region increasingly strengthened integrally are opened follow-up shale gas block
Originating party case causes huge environmental protection and cost pressure.
Oil base drilling fluid is got in this context per se with the shortcomings of environmental-protecting performance is insufficient, cost is too high, complex process
Hair protrudes, and Shallow Gas Wells well cementation difficulty is big under the conditions of oil base drilling fluid, and using oil base drilling fluid drilling well, two interfaces are present
Greasy filth, Cementation Quality are difficult to ensure that.Conventional common water base drilling fluid system can not solve big in drilling process simultaneously
The technology of borehole wall stability and lubricity needed for level of displacement well drilling needs.Therefore, a set of shale gas that is applied to is researched and developed to grow
The high performance water-based drilling fluid system of horizontal segment is imperative.
The content of the invention
The present invention provides a kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof, drilling fluid
Product has long horizontal sections shale borehole wall stability, low-shear rate viscosity height, prop-carrying capacity is strong, blocks microcrack ability
By force, lubricity is good, filter loss is low, cost is low, extemporaneous preparation safeguard it is simple efficiently, bio-toxicity is low, produce water base drilling cuttings can be with
The directly characteristic such as discharge.
To achieve these goals, the technical solution adopted by the present invention is as follows：
The present invention provides a kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections, and its drilling fluid is by water, swelling
Soil, caustic soda, multi-functional complexing agent, middle-molecular-weihydroxyethyl fluid loss agent, efficient coating agent, anti sinking lubricant, closure fluid loss additive, suppression
Agent, nanometer sealing agent and speed-raising lubricant are uniformly mixed, and it is to add the bentonite 0.7g- per in 100mL water that it, which is formulated,
1.0g, caustic soda 0.7g-1.0g, multi-functional complexing agent 1.5-2g, middle-molecular-weihydroxyethyl fluid loss agent 0.7g-1.5g, efficient coating agent
0.1g-0.3g, anti sinking lubricant 2g-4g, closure fluid loss additive 1g-2g, inhibitor 2g-4g, liquid nanometer sealing agent 2g-4g,
Raise speed lubricant 2g-4g, barite 30g-200g.
According to above scheme, it is swollen that the bentonite includes Weifang API mud bentonite, Songzi bentonite in powder, Lingshou calcium base
Any one in profit soil or more than one mixture.
According to above scheme, the multi-functional complexing agent includes potassium silicate, sodium metasilicate, nano-graphite, sodium methyl silicate, received
Any one in rice silica or more than one mixture.
According to above scheme, the middle-molecular-weihydroxyethyl fluid loss agent includes CMS, low adhesive aggregation anionic cellulose, low
Any one in viscous sanlose or more than one mixture.
According to above scheme, the efficiently coating agent includes PAMC, part water-based polyacrylamide, non-
Any one in cationic polyacrylamide, amphion polyacrylamide or more than one mixture.
According to above scheme, the anti sinking lubricant includes 120 DEG C of softening point asphalt powder, sulfonated gilsonite sylvite, liquid sun
Any one or more than one in ion emulsified asphalt, type rubber latex modified emulsified asphalt, Polystyrene pitch it is mixed
Compound.
According to above scheme, it is described closure fluid loss additive include oxidized asphalt, graphene oxide, sulfonated-methyl brown coal resin,
Any one in sulfonated-pheno-formoldehyde resin or more than one mixture.
According to above scheme, the inhibitor is included in amido silanol, polyethylene glycol, ending amino polyether, amido polyalcohols
Any one or more than one mixture.
According to above scheme, the liquid sealing agent includes paraffin wax emulsions, styrene latex liquid, carboxylic styrene butadiene latex, benzene
Any one in third latex, NBR latex or more than one mixture.
According to above scheme, the speed-raising lubricant includes PPG, polycaprolactone polyol, polyetheramine, alkyl
Any one in glucosides, amido sugar or more than one mixture.
Present invention also offers a kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof：Press
According to production water, bentonite, caustic soda, multi-functional complexing agent, middle-molecular-weihydroxyethyl fluid loss agent, efficient coating agent, anti sinking lubricant, closure
Fluid loss additive, inhibitor, nanometer sealing agent and raise speed lubricant order, add raw material successively, often add a kind of raw material, be both needed to
Stir and add down a kind of raw material again.
According to above scheme, the rotating speed of the stirring is 10000r/min；Mixing time is controlled in more than 20min, so that
Every kind of raw material is sufficiently uniformly dissolved.
The beneficial effects of the invention are as follows：
1) product density scope of the invention is wide, from density 1.20g/cm3~2.30g/cm3, it is respectively provided with good fluidity
Energy；
2) product HTHP dehydration of the invention is low, and less than 5mL, mud cake is thin, is advantageous to improve long horizontal sections shale
Borehole wall stability；
3) product of the invention has the characteristic that nanometer blocks, and can block microcrack and the micropore of shale, can prevent
Free water enters in shale, is formed and blocked in nearly borehole wall area, reduces pressure transmission；
4) product of the invention is strong to shale inhibition, and heat yield of rolling back reaches 98%, close to oil base drilling well
Liquid, drilling cuttings will not disperse in the water-base drilling fluid, pulping；
5) product lubricity of the invention is good, is advantageous to the long horizontal segment of shale gas 1500-2000 rice and makes a trip, reduces and rub
Resistance, improve drilling well timeliness；
6) drilling cuttings caused by product of the invention, can directly be discharged, be handled using curing；
7) product bio-toxicity of the invention is low, and EC50 values are high close to 30000mg/L, Environmental security degree；
8) preparation method step of the invention is simple, operation is simple, is adapted to the operation of shale gas situ of drilling well.
Mechanism of the present invention is：
1) shale microcrack is extremely developed, and fracture width is in micron-nanometer distribution, in water-base drilling fluid
Liquid sealing agent is added in system, blocks micro-nano crack, prevents Free water intrusion shale deep, reducing the intrusion of water prevents
Turgor pressure raises, so as to improve shale borehole wall stability；
2) drilling fluid, which adds special multi-functional complexing agent, has Gu Bi, filtrate reducing effect, and energy is blocked by strengthening the borehole wall
Power, while drilling filtrate intrusion volume is reduced, shale CLAY MINERALS AND THEIR SIGNIFICANCE is difficult to hydration swelling, reach the work for maintaining wellbore stability
With.
3) after anti sinking lubricant is pitch softening, coated on the borehole wall, there is oil film property, separate connecing for water and shale
Touch, so as to improve caving-preventing characteristic, the material of similar oil can reduce the frictional resistance that makes a trip on the borehole wall；The lubricant that raises speed is that have
The effect of anti-mud drum, improve the hydrophily of drill bit and centralizer, during high speed is crept into, shale drilling cuttings is easily separated from drill bit conjunction
Golden tooth enters annular space, in time band upper ground surface, so as to improve rate of penetration.
Embodiment
Technical scheme is illustrated with reference to embodiment.
Embodiment 1：
The present invention provides a kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof：
300mL production water is measured, in the case of high-speed stirred (10000r/min), adds 2.1g Songzis bentonite in powder,
20min is stirred, then adds 2.1g caustic soda, stirs 20min；Then 3.0g nano silicons are added, 1.5g nano-graphites, are stirred
Mix 20min；The low adhesive aggregation anionic celluloses of 2.1g are added, stir 20min；0.3g PAMCs are added, are stirred
Mix 20min；Then 6g sulfonated gilsonite sylvite is added, stirs 20min；3g oxidized asphalts, 3g sulfonated-methyl brown coal resins are added, is stirred
Mix 10min；9g amido silanols, stir 10min；9g styrene-acrylic latexes, stir 10min；9g PPGs, 10min is stirred, finally
Add 560g barites (density 1.50g/cm3) stirring 20min, obtain product.
The performance of the present embodiment product is as shown in table 1, and each parameter determines at room temperature, wherein, state is before rolling
Measure performance after having prepared, state is the drilling fluid that will be prepared heat rolling 16h at 120 DEG C after rolling, is then cooled to room temperature survey
Qualitative energy.
Each parameter is respectively in table 1：PV：Plastic viscosity；YP：Yield value；GEL：Gel strength；API：Dehydration is pressed in normal temperature；
HTHP：HTHP dehydration；Casting bed depth：The shut-off capacity of drilling fluid is represented, depth is smaller, represents that sealing characteristics is better；Profit
Sliding coefficient：The lubricity of drilling fluid, lubricating coefficient is smaller, represents that lubricity is better；Heat is rolled back yield：It is for appraisal drilling liquid
Inhibition method, heat yield of rolling back is higher, represents that inhibition is stronger.
Properties of product assay method is performed according to following petroleum industry standard：
1st, industrial gas oil drilling fluid on-the-spot test Part I water-base drilling fluid, GB/T16783.1-2006 (PV,
The parameters such as YP, GEL, API, HTHP perform according to this standard)
2nd, lubricant for drilling fluids assessment process SY/T 6094-94 (extreme boundary lubrication coefficient performs according to this standard)
3rd, shale control agent evaluation method SY/T6335-1997 (heat roll back yield performed according to this standard)
4th, drilling fluid with bridge joint loss circulation material Experimental Method in Laboratory SY/T5840-2007, (according to this standard hold by casting bed depth
OK)
The properties of product experimental data of 1 embodiment of table 1
Note：Hot rolling condition：120 DEG C × 16h, HTHP dehydration condition determinations：3.5MPa×120℃
Embodiment 2：
The present invention provides a kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof：
300mL production water is measured, in the case of high-speed stirred (10000r/min), adds 2.1g Songzis bentonite in powder,
20min is stirred, then adds 2.1g caustic soda, stirs 20min；Then 3.0g sodium methyl silicates, 1.5g nano-graphites, stirring are added
20min；2.1g CMSs are added, stir 20min；0.3g PAMAs are added, stir 20min；So
6g type rubber latex modified emulsified asphalts are added afterwards, stir 20min；3g graphene oxides, 3g sulfonated-pheno-formoldehyde resins are added, is stirred
Mix 10min；9g ending amino polyethers, stir 10min；9g styrene latex liquid, stir 10min；9g polycaprolactone polyols, stirring
10min, it is eventually adding 560g barites (density 1.50g/cm3) stirring 20min, obtain product.
The performance of the present embodiment product is as shown in table 2, and each meaning of parameters and method of testing are same as Example 1.
The properties of product experimental data of 2 embodiment of table 2
Note：Hot rolling condition：120 DEG C × 16h, HTHP dehydration condition determinations：3.5MPa×120℃
Embodiment 3：
The present invention provides a kind of high performance water-based drilling fluid of suitable shale gas long horizontal sections and preparation method thereof：
300mL production water is measured, in the case of high-speed stirred (10000r/min), adds 2.1g Songzis bentonite in powder,
20min is stirred, then adds 2.1g caustic soda, stirs 20min；Then 3.0g sodium methyl silicates, 1.5g nano-graphites, stirring are added
20min；The low viscous sanloses of 2.1g are added, stir 20min；0.3g non-ionic polyacrylamides are added, are stirred
Mix 20min；Then 6g Polystyrene pitches are added, stir 20min；Add 3g sulfonated-methyl brown coals resin, 3g sulphur methyl
Phenolic resin, stir 10min；9g polyethylene glycol, stir 10min；9g NBR latexes, stir 10min；9g APGs, stirring
10min, it is eventually adding 560g barites (density 1.50g/cm3) stirring 20min, obtain product.
The present embodiment properties of product are as shown in table 3, and each meaning of parameters and method of testing are same as Example 1.
The properties of product experimental data of 3 embodiment of table 3
Note：Hot rolling condition：120 DEG C × 16h, HTHP dehydration condition determinations：3.5MPa×120℃
Above example is only to illustrative and not limiting technical scheme, although above-described embodiment enters to the present invention
Detailed description is gone, the person skilled of this area should be understood：The present invention can be modified or replaced on an equal basis, but
Any modification and local replacement for not departing from spirit and scope of the invention all should be covered in scope of the presently claimed invention.
Claims (10)
- A kind of 1. high performance water-based drilling fluid of suitable shale gas long horizontal sections, it is characterised in that including water, bentonite, caustic soda, Multi-functional complexing agent, middle-molecular-weihydroxyethyl fluid loss agent, efficient coating agent, anti sinking lubricant, closure fluid loss additive, inhibitor, nanometer Sealing agent and speed-raising lubricant, its be formulated be per 100mL water in add the bentonite 0.7g-1.0g, caustic soda 0.7g-1.0g, Multi-functional complexing agent 1.5-2g, middle-molecular-weihydroxyethyl fluid loss agent 0.7g-1.5g, efficient coating agent 0.1g-0.3g, anti sinking lubricant 2g-4g, closure fluid loss additive 1g-2g, liquid inhibitor 2g-4g, liquid nanometer sealing agent 2g-4g, raise speed lubricant 2g-4g, Barite 30g-200g.
- 2. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described Multi-functional complexing agent include potassium silicate, sodium metasilicate, nano-graphite, in sodium methyl silicate nano silicon any one or one The mixture of the kind above.
- 3. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described Middle-molecular-weihydroxyethyl fluid loss agent includes appointing in CMS, low adhesive aggregation anionic cellulose, low viscous sanlose The mixture for one or more of anticipating.
- 4. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described Efficient coating agent includes PAMC, part water-based polyacrylamide, non-ionic polyacrylamide, amphion and gathered Any one in acrylamide or more than one mixture.
- 5. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described Anti sinking lubricant includes 120 DEG C of softening point asphalt powder, sulfonated gilsonite sylvite, liquid cation emulsified asphalt, rubber latex modifier Any one in emulsified asphalt, Polystyrene pitch or more than one mixture.
- 6. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described Blocking fluid loss additive includes any one in oxidized asphalt, graphene oxide, sulfonated-methyl brown coal resin, sulfonated-pheno-formoldehyde resin Or more than one mixture.
- 7. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described Inhibitor includes any one or more than one mixing in amido silanol, polyethylene glycol, ending amino polyether, amido polyalcohols Thing.
- 8. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described Liquid sealing agent includes any one in paraffin wax emulsions, styrene latex liquid, carboxylic styrene butadiene latex styrene-acrylic latex, NBR latex Or more than one mixture.
- 9. the high performance water-based drilling fluid of suitable shale gas long horizontal sections according to claim 1, it is characterised in that described The lubricant that raises speed include PPG, polycaprolactone polyol, polyetheramine, APG, in amido sugar any one or More than one mixture.
- 10. a kind of preparation method of the high performance water-based drilling fluid of the suitable shale gas long horizontal sections described in claim 1, it is special Sign is, at ambient temperature, according to production water, bentonite, caustic soda, multi-functional complexing agent, middle-molecular-weihydroxyethyl fluid loss agent, efficiently Coating agent, anti sinking lubricant, the order for blocking fluid loss additive, inhibitor, nanometer sealing agent and the lubricant that raises speed, addition is former successively Material, often adds a kind of raw material, is required to stir and adds lower one kind again.
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Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108300433A (en) * | 2018-03-01 | 2018-07-20 | 陕西延长石油(集团)有限责任公司研究院 | A kind of drilling shale horizontal well nano combined sealing agent and preparation method thereof |
| CN109520897A (en) * | 2019-01-23 | 2019-03-26 | 西南石油大学 | A kind of indoor evaluation method of shale gas water-base drilling fluid nanometer sealing agent |
| CN110218552A (en) * | 2019-04-17 | 2019-09-10 | 中国石油天然气股份有限公司 | Drilling fluid and preparation method thereof can be recycled in a kind of clean type |
| CN110317587A (en) * | 2018-03-29 | 2019-10-11 | 晋州市茂源钻采技术开发有限公司 | A kind of high performance water-based drilling fluid and preparation method thereof |
| CN110903813A (en) * | 2019-11-14 | 2020-03-24 | 中石化石油工程技术服务有限公司 | High-performance water-based drilling fluid capable of keeping shale strength stable and preparation method thereof |
| CN111826137A (en) * | 2019-04-15 | 2020-10-27 | 中石化石油工程技术服务有限公司 | Amino polyether drilling fluid and preparation method thereof |
| CN113195677A (en) * | 2018-12-12 | 2021-07-30 | 切弗朗菲利浦化学公司 | Wellbore drilling composition |
| CN114479788A (en) * | 2020-11-12 | 2022-05-13 | 中国石油化工股份有限公司 | Water-based drilling fluid composition suitable for high-temperature easily collapsed stratum, water-based drilling fluid, preparation method and application thereof |
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| CN108300433A (en) * | 2018-03-01 | 2018-07-20 | 陕西延长石油(集团)有限责任公司研究院 | A kind of drilling shale horizontal well nano combined sealing agent and preparation method thereof |
| CN110317587A (en) * | 2018-03-29 | 2019-10-11 | 晋州市茂源钻采技术开发有限公司 | A kind of high performance water-based drilling fluid and preparation method thereof |
| CN113195677A (en) * | 2018-12-12 | 2021-07-30 | 切弗朗菲利浦化学公司 | Wellbore drilling composition |
| US11078395B2 (en) | 2018-12-12 | 2021-08-03 | Chevron Phillips Chemical Company Lp | Wellbore drilling compositions |
| CN109520897A (en) * | 2019-01-23 | 2019-03-26 | 西南石油大学 | A kind of indoor evaluation method of shale gas water-base drilling fluid nanometer sealing agent |
| CN111826137A (en) * | 2019-04-15 | 2020-10-27 | 中石化石油工程技术服务有限公司 | Amino polyether drilling fluid and preparation method thereof |
| CN110218552A (en) * | 2019-04-17 | 2019-09-10 | 中国石油天然气股份有限公司 | Drilling fluid and preparation method thereof can be recycled in a kind of clean type |
| CN110903813A (en) * | 2019-11-14 | 2020-03-24 | 中石化石油工程技术服务有限公司 | High-performance water-based drilling fluid capable of keeping shale strength stable and preparation method thereof |
| CN114479788A (en) * | 2020-11-12 | 2022-05-13 | 中国石油化工股份有限公司 | Water-based drilling fluid composition suitable for high-temperature easily collapsed stratum, water-based drilling fluid, preparation method and application thereof |
| CN114479788B (en) * | 2020-11-12 | 2023-03-31 | 中国石油化工股份有限公司 | Water-based drilling fluid composition suitable for high-temperature easily collapsed stratum, water-based drilling fluid, preparation method and application thereof |
| CN114836178A (en) * | 2021-02-01 | 2022-08-02 | 中国石油天然气股份有限公司 | Water-based drilling fluid composition and water-based drilling fluid |
| CN115232605A (en) * | 2021-04-22 | 2022-10-25 | 中国石油化工股份有限公司 | Modified emulsified asphalt for water-based drilling fluid and preparation method and application thereof |
| CN115232605B (en) * | 2021-04-22 | 2023-07-04 | 中国石油化工股份有限公司 | Modified emulsified asphalt for water-based drilling fluid and preparation method and application thereof |
| CN114774092A (en) * | 2021-12-15 | 2022-07-22 | 中国石油化工股份有限公司 | Drilling protection composition and drilling protection liquid |
| CN114774092B (en) * | 2021-12-15 | 2023-09-22 | 中国石油化工股份有限公司 | Drilling protection composition and drilling protection liquid |
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Application publication date: 20180202 |