CN103865499A - Recyclable microfoam polymer drilling fluid and preparation method for same - Google Patents
Recyclable microfoam polymer drilling fluid and preparation method for same Download PDFInfo
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- CN103865499A CN103865499A CN201410133157.1A CN201410133157A CN103865499A CN 103865499 A CN103865499 A CN 103865499A CN 201410133157 A CN201410133157 A CN 201410133157A CN 103865499 A CN103865499 A CN 103865499A
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- 238000005553 drilling Methods 0.000 title claims abstract description 117
- 239000012530 fluid Substances 0.000 title claims abstract description 111
- 229920000642 polymer Polymers 0.000 title claims abstract description 64
- 238000002360 preparation method Methods 0.000 title claims description 10
- 239000006260 foam Substances 0.000 claims abstract description 74
- 239000003381 stabilizer Substances 0.000 claims abstract description 51
- 150000003863 ammonium salts Chemical class 0.000 claims abstract description 40
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims abstract description 38
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims abstract description 31
- 239000000314 lubricant Substances 0.000 claims abstract description 31
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 20
- 239000010426 asphalt Substances 0.000 claims abstract description 20
- 125000002091 cationic group Chemical group 0.000 claims abstract description 20
- 239000000843 powder Substances 0.000 claims abstract description 20
- 229910000029 sodium carbonate Inorganic materials 0.000 claims abstract description 19
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 17
- 239000000440 bentonite Substances 0.000 claims abstract description 11
- 229910000278 bentonite Inorganic materials 0.000 claims abstract description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 50
- 235000019832 sodium triphosphate Nutrition 0.000 claims description 24
- 229910052708 sodium Inorganic materials 0.000 claims description 23
- 239000011734 sodium Substances 0.000 claims description 23
- SNRUBQQJIBEYMU-UHFFFAOYSA-N dodecane Chemical compound CCCCCCCCCCCC SNRUBQQJIBEYMU-UHFFFAOYSA-N 0.000 claims description 22
- 239000000203 mixture Substances 0.000 claims description 22
- 238000003756 stirring Methods 0.000 claims description 22
- 239000002131 composite material Substances 0.000 claims description 20
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims description 19
- 229920002125 Sokalan® Polymers 0.000 claims description 19
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 19
- 239000004584 polyacrylic acid Substances 0.000 claims description 19
- 229910052700 potassium Inorganic materials 0.000 claims description 19
- 239000011591 potassium Substances 0.000 claims description 19
- 150000003839 salts Chemical class 0.000 claims description 19
- 235000017550 sodium carbonate Nutrition 0.000 claims description 18
- 239000013530 defoamer Substances 0.000 claims description 13
- 101710194948 Protein phosphatase PhpP Proteins 0.000 claims description 12
- HWGNBUXHKFFFIH-UHFFFAOYSA-I pentasodium;[oxido(phosphonatooxy)phosphoryl] phosphate Chemical compound [Na+].[Na+].[Na+].[Na+].[Na+].[O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O HWGNBUXHKFFFIH-UHFFFAOYSA-I 0.000 claims description 12
- UNXRWKVEANCORM-UHFFFAOYSA-I triphosphate(5-) Chemical compound [O-]P([O-])(=O)OP([O-])(=O)OP([O-])([O-])=O UNXRWKVEANCORM-UHFFFAOYSA-I 0.000 claims description 12
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 claims description 11
- DBMJMQXJHONAFJ-UHFFFAOYSA-M Sodium laurylsulphate Chemical compound [Na+].CCCCCCCCCCCCOS([O-])(=O)=O DBMJMQXJHONAFJ-UHFFFAOYSA-M 0.000 claims description 11
- 239000004141 Sodium laurylsulphate Substances 0.000 claims description 11
- LQZZUXJYWNFBMV-UHFFFAOYSA-N dodecan-1-ol Chemical compound CCCCCCCCCCCCO LQZZUXJYWNFBMV-UHFFFAOYSA-N 0.000 claims description 11
- 239000000839 emulsion Substances 0.000 claims description 11
- 229920000570 polyether Polymers 0.000 claims description 11
- 229920002050 silicone resin Polymers 0.000 claims description 11
- 235000019333 sodium laurylsulphate Nutrition 0.000 claims description 11
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 11
- 229920002239 polyacrylonitrile Polymers 0.000 claims description 10
- 239000010428 baryte Substances 0.000 claims description 9
- 229910052601 baryte Inorganic materials 0.000 claims description 9
- 238000013461 design Methods 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 7
- MYYBXTFMTDFNCM-UHFFFAOYSA-N 2,3,5,6-tetrafluorobenzenesulfonamide Chemical compound NS(=O)(=O)C1=C(F)C(F)=CC(F)=C1F MYYBXTFMTDFNCM-UHFFFAOYSA-N 0.000 claims description 6
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- 238000004090 dissolution Methods 0.000 claims description 6
- 229920002545 silicone oil Polymers 0.000 claims description 6
- 239000007921 spray Substances 0.000 claims description 6
- 230000001839 systemic circulation Effects 0.000 claims description 6
- 230000000694 effects Effects 0.000 abstract description 10
- 239000003638 chemical reducing agent Substances 0.000 abstract 1
- 239000000470 constituent Substances 0.000 abstract 1
- 239000000706 filtrate Substances 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 229920005614 potassium polyacrylate Polymers 0.000 abstract 1
- 238000012360 testing method Methods 0.000 description 13
- 238000005516 engineering process Methods 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- 239000004215 Carbon black (E152) Substances 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000002474 experimental method Methods 0.000 description 3
- 229930195733 hydrocarbon Natural products 0.000 description 3
- 150000002430 hydrocarbons Chemical class 0.000 description 3
- 230000005764 inhibitory process Effects 0.000 description 3
- 230000009466 transformation Effects 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 238000009775 high-speed stirring Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000011160 research Methods 0.000 description 2
- 239000011780 sodium chloride Substances 0.000 description 2
- 239000006004 Quartz sand Substances 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 239000013543 active substance Substances 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 150000001298 alcohols Chemical class 0.000 description 1
- 238000005266 casting Methods 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000004087 circulation Effects 0.000 description 1
- 239000004567 concrete Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 230000029087 digestion Effects 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002170 ethers Chemical class 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 239000008233 hard water Substances 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 238000009533 lab test Methods 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 238000004088 simulation Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000008399 tap water Substances 0.000 description 1
- 235000020679 tap water Nutrition 0.000 description 1
Classifications
-
- 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
- C09K8/38—Gaseous or foamed well-drilling compositions
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/5045—Compositions based on water or polar solvents containing inorganic compounds
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5083—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/504—Compositions based on water or polar solvents
- C09K8/506—Compositions based on water or polar solvents containing organic compounds
- C09K8/508—Compositions based on water or polar solvents containing organic compounds macromolecular compounds
- C09K8/5086—Compositions based on water or polar solvents containing organic compounds macromolecular compounds obtained otherwise than by reactions only involving carbon-to-carbon unsaturated bonds
-
- 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
- C09K8/50—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls
- C09K8/516—Compositions for plastering borehole walls, i.e. compositions for temporary consolidation of borehole walls characterised by their form or by the form of their components, e.g. encapsulated material
- C09K8/518—Foams
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Excavating Of Shafts Or Tunnels (AREA)
- Lubricants (AREA)
Abstract
The invention discloses a recyclable microfoam polymer drilling fluid. The recyclable microfoam polymer drilling fluid comprises the following constituents: 40-50 g of bentonite, 5 g of sodium carbonate, 15 g of ammonium salt, 3 g of potassium polyacrylate KPA, 10 g of compound-salt-resistant filtrate reducer KFH, 5-10 g of potassium chloride, 10 g of cationic emulsified asphalt powder, 20 g of low-fluorescence well wall stabilizer HQ-1, 1-6 g of foamer BZ-MBS-1, 1-6 g of foam stabilizer BZ-MBSF-1 and 10 g of lubricant which are added in per litre of clear water. The recyclable microfoam polymer drilling fluid disclosed by the invention has the characteristics of being low in density, good in foam stability, good in lubricity, recyclable, less in influence on environment, good in reservoir protection effect and the like, and is applicable to a stratum with a low pressure, liable to leak and with a plurality of pressure systems.
Description
Technical field
The present invention relates to a kind of formula of drilling fluid, particularly relate to a kind of for the coexist circulative micro-foam polymer drilling fluid of hydrocarbon stratum journey of low pressure, leakiness and multi-pressure system.
Background technology
Leakage is reservoir pressure while being less than fluid column pressure, the phenomenon that drilling fluid bleeds stratum in a large number.Leakage can cause down-hole accident or complexcase, causes the engineering time to extend, and operating cost increases, or even Oil/gas Well scraps, and then causes the serious wasting of resources and tremendous economic loss.Moreover, because a large amount of drilling fluids enter hydrocarbon zone, cause reservoir produce oil gas ability to decline, also will drop into larger man power and material and improve output and recovery ratio, affected oilfield economic benefit.Therefore, improve oilfield economic benefit, must fundamentally control drilling fluid leakage but.
Micro-foam drilling fluid technology is by abroad introducing at the beginning of 21 century, this microbubble system adopts exactly some tensio-active agent and polymer scale to be combined and produces a kind of microbubble, form a kind of microbubble network that can stop or delay drilling fluid invaded formation, be mainly used in abroad in exhaustion oil reservoir, low-pressure stratum drilling well, underbalance well and horizontal well drilling.
At home, later triumph in 2002, tell the oil fields such as Kazakhstan and begin one's study successively, obtained good effect, mainly solve severe circulation loss and oil layer pollution problem that low pressure and easy leaking stratum runs into.Domestic and international application micro-foam drilling fluid soil will be to solve drilling complexity and the oil layer pollution problem of low pressure and easy leaking block at present.The scope of research, just for some concrete phenomenon, does not possess adaptability widely, and is difficult to for middle-deep well, and selected whipping agent oil-proofness is poor, can not adaptation level well or the drilling operation of long horizontal traverse well.
Summary of the invention
In order to overcome the deficiency of background technology, the invention provides a kind of circulative micro-foam polymer drilling fluid, this drilling fluid density is low, and shield effectiveness is good, low pressure and easy leaking layer anti-leakage effect, prepare simple and easyly, density is adjustable, applicable to low pressure, leakiness and multiple pressure power system stratum, and circulative micro-foam polymer drilling fluid has oil-proofness well, can froth breaking after drilling operation finishes, density returns to base fluid density.
A kind of circulative micro-foam polymer drilling fluid, comprise following component: in every liter of clear water, add 40-50 gram of wilkinite, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5-10 gram of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,1-6 gram of whipping agent BZ-MBS-1,1-6 gram of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants.
Circulative micro-foam polymer drilling fluid of the present invention, wherein said whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.
A kind of circulative micro-foam polymer drilling fluid, comprises following component: in every liter of clear water, add 40-50 gram of wilkinite, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5-10 gram of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,1-6 gram of whipping agent BZ-MBS-1,1-6 gram of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants, some barite BaSO
4.
Circulative micro-foam polymer drilling fluid of the present invention, wherein said BaSO
4addition be 20%～30% of drilling fluid total mass.
Circulative micro-foam polymer drilling fluid of the present invention, comprises following component: in every liter of clear water, add 40 grams of wilkinites, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,3 grams of whipping agent BZ-MBS-1,3 grams of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants, 300 grammes per square metre spar BaSO
4.
Circulative micro-foam polymer drilling fluid of the present invention, wherein said whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.
Circulative micro-foam polymer drilling fluid of the present invention, wherein said circulative micro-foam polymer drilling fluid has oil-proofness, after finishing, drilling operation can adopt defoamer BZ-MBDF froth breaking, density returns to base fluid density, can be recycled, described defoamer BZ-MBDF is the dimethyl silicone oil of viscosity 300-500mpa.s.
A preparation method for circulative micro-foam polymer drilling fluid, comprises the steps:
By feed hopper or tank face, according to reinforced order, add in proportion wilkinite aquation, add successively again soda ash, ammonium salt, polyacrylic acid potassium KPA, anti-composite salt fluid loss agent KFH, Repone K, cationic emulsified bitumen powder, low fluorescence borehole wall stabilizer HQ-1 also stirs, measure its performance, performance meets after design needs, add suds-stabilizing agent BZ-MBSF-1, after slowly adding and stirring, add again whipping agent BZ-MBS-1, utilize agitator, mud gun and the recycle system, fully stir, spray thorn, the systemic circulation of high-low pressure double pump, make its abundant mixed dissolution, and abundant cycle balance, be 45～65s until form viscosity, density is at 1.03～1.05g/cm
3material, for subsequent use, prepare separately in proportion lubricant.
A preparation method for circulative micro-foam polymer drilling fluid, comprises the steps:
By feed hopper or tank face, according to reinforced order, add in proportion wilkinite aquation, then add successively soda ash, ammonium salt, polyacrylic acid potassium KPA, anti-composite salt fluid loss agent KFH, Repone K, cationic emulsified bitumen powder, low fluorescence borehole wall stabilizer HQ-1, barite BaSO
4and stir, measure its performance, performance meets after design needs, add suds-stabilizing agent BZ-MBSF-1, after slowly adding and stirring, then add whipping agent BZ-MBS-1, utilize agitator, mud gun and the recycle system, fully stirring, spray thorn, the systemic circulation of high-low pressure double pump, makes its abundant mixed dissolution, and abundant cycle balance, be 45～65s until form viscosity, density is at 1.03～1.05g/cm
3material, for subsequent use; Prepare separately in proportion lubricant.
Circulative micro-foam polymer drilling fluid difference from prior art of the present invention is: circulative micro-foam polymer drilling fluid density of the present invention is low, shield effectiveness is good, low pressure and easy leaking layer anti-leakage effect, prepare simple and easy, density is adjustable, applicable to low pressure, leakiness and multiple pressure power system stratum; And circulative micro-foam polymer drilling fluid has good oil-proofness, can froth breaking after drilling operation finishes, density returns to base fluid density; After circulative micro-foam polymer drilling fluid of the present invention is micro-foam drilling fluid by common fluid conversion, density has reduction by a relatively large margin, other performance is more rational, 130 DEG C of temperature resistances, normal temperature permeability resume figure reaches 95%, tender two sections of landwaste rate of recovery 92.41%, can meet the wellbore construction operation of oil field middle-deep well completely; Circulative micro-foam drilling fluid of the present invention can form fine and close mud cake at the nearly borehole wall, there is good leakproof and reservoir protection effect, simulated leaking stoppage experiment proves, the effect that the micro-foam drilling fluid of research has significant minimizing leakage and elimination to miss at absorbent ground, anti-leakage effect; The features such as described circulative micro-foam polymer drilling fluid froth stability is good, and oilness is good, can be recycled, little to environmental influence, and reservoir protection is effective, applicable to low pressure, leakiness and the multi-pressure system stratum that coexists.
Whipping agent BZ-MBS-1 described in circulative micro-foam polymer drilling fluid of the present invention is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP, gas release is stable, can reduce greatly drilling fluid density; Add tripoly phosphate sodium STPP in hard water, to use, and do not affect the performance of drilling fluid system; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol, by alcohols with ethers is composite forms, does not change the rheological of drilling fluid system, only the stability of foam is played the effect of enhancing.
In circulative micro-foam polymer drilling fluid of the present invention, also add barite BaSO4, its objective is for equilibrium strata pressure and caving pressure.Base area stressor layer and caving pressure add a certain amount of barite in drilling fluid, can active balance reservoir pressure and maintenance wellbore stability.
Below in conjunction with specific embodiment, circulative micro-foam polymer drilling fluid of the present invention is described further.
Embodiment
Embodiment 1
A kind of circulative micro-foam polymer drilling fluid, comprise following component: in every liter of clear water, add 50 grams of wilkinites, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 10 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,6 grams of whipping agent BZ-MBS-1,6 grams of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants.
Wherein, described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.
Embodiment 2
A kind of circulative micro-foam polymer drilling fluid, comprise following component: in every liter of clear water, add 40 grams of wilkinites, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,1 gram of whipping agent BZ-MBS-1,1 gram of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants.
Wherein, described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.
Embodiment 3
A kind of circulative micro-foam polymer drilling fluid, comprise following component: in every liter of clear water, add 45 grams of wilkinites, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 8 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,3 grams of whipping agent BZ-MBS-1,3 grams of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants.
Wherein, described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.
Embodiment 4
A kind of circulative micro-foam polymer drilling fluid, comprises following component: in every liter of clear water, add 40 grams of wilkinites, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,6 grams of whipping agent BZ-MBS-1,6 grams of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants, some barite BaSO4.Described BaSO
4addition be 20% of drilling fluid total mass.
Wherein, described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.Described circulative micro-foam polymer drilling fluid has oil-proofness, after drilling operation finishes, can adopt defoamer BZ-MBDF froth breaking, and density returns to base fluid density, can be recycled, and described defoamer BZ-MBDF is the dimethyl silicone oil of viscosity 300-500mpa.s.
Embodiment 5
A kind of circulative micro-foam polymer drilling fluid, comprises following component: in every liter of clear water, add 50 grams of wilkinites, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 10 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,1 gram of whipping agent BZ-MBS-1,1 gram of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants, some barite BaSO4.Described BaSO
4addition be 30% of drilling fluid total mass.
Wherein, described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.Described circulative micro-foam polymer drilling fluid has oil-proofness, after drilling operation finishes, can adopt defoamer BZ-MBDF froth breaking, and density returns to base fluid density, can be recycled, and described defoamer BZ-MBDF is the dimethyl silicone oil of viscosity 300-500mpa.s.
Embodiment 6
Be with the difference of embodiment 5: described BaSO
4addition be 20% of drilling fluid total mass.
Embodiment 7
A preparation method for circulative micro-foam polymer drilling fluid, comprises the steps:
By feed hopper or tank face, according to reinforced order, in clear water, add in proportion wilkinite aquation, add successively again soda ash, ammonium salt, polyacrylic acid potassium KPA, anti-composite salt fluid loss agent KFH, Repone K, cationic emulsified bitumen powder, low fluorescence borehole wall stabilizer HQ-1 also stirs, measure its performance, performance meets after design needs, add suds-stabilizing agent BZ-MBSF-1, after slowly adding and stirring, add again whipping agent BZ-MBS-1, utilize agitator, mud gun and the recycle system, fully stir, spray thorn, the systemic circulation of high-low pressure double pump, make its abundant mixed dissolution, and abundant cycle balance, be 45～65s until form viscosity, density is at 1.03～1.05g/cm
3material, for subsequent use, prepare separately in proportion lubricant.
Embodiment 8
A preparation method for circulative micro-foam polymer drilling fluid, comprises the steps:
By feed hopper or tank face, according to reinforced order, in clear water, add in proportion wilkinite aquation, then add successively soda ash, ammonium salt, polyacrylic acid potassium KPA, anti-composite salt fluid loss agent KFH, Repone K, cationic emulsified bitumen powder, low fluorescence borehole wall stabilizer HQ-1, barite BaSO
4and stir, measure its performance, performance meets after design needs, add suds-stabilizing agent BZ-MBSF-1, after slowly adding and stirring, then add whipping agent BZ-MBS-1, utilize agitator, mud gun and the recycle system, fully stirring, spray thorn, the systemic circulation of high-low pressure double pump, makes its abundant mixed dissolution, and abundant cycle balance, be 45～65s until form viscosity, density is at 1.03～1.05g/cm
3material, for subsequent use; Prepare separately in proportion lubricant.
Embodiment 9 laboratory experiments:
In 1000ml tap water, add successively 40 grams of wilkinites (aquation) according to reinforced order, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,300 grammes per square metre spar.Measure performance in table 1.
Property of drilling fluid before the indoor preparation of table 1 transforms
(2) in above-mentioned formula, add 3g whipping agent, 3g suds-stabilizing agent, measures performance in table 2.
Circulative micro-foam polymer drilling fluid performance after table 2 transforms
(3) circulative micro-foam polymer drilling fluid transformation period experiment
Get above-mentioned (2) formula 400ml at a high speed (11000r/min) stir 5min, then move in the graduated cylinder with scale, record isolate 200mL drilling fluid time one be the transformation period, the transformation period that records micro-foam drilling fluid through experiment is 32h.
(4) circulative micro-foam polymer drilling fluid shale inhibition test
Get tender two sections of 6-10 order rock samples and mixed by the micro-foam drilling fluid of (2) preparation, at 80 DEG C, roll and disperse through 16h, cross 40 mesh sieves, dry, weigh.Calculating shale recovery ratio was is (45.64+46.77)/100 × 100%=92.41%, and visible micro-foam drilling fluid has good shale inhibition.Inhibition experimental result is in table 3.
Table 3 circulative micro-foam polymer drilling fluid liquid suppresses merit rating
(5) circulative micro-foam polymer drilling fluid temperature resistance merit rating test
Get above-mentioned (2) formula drilling fluid and stir through high speed (11000r/min), insert in digestion tank, at 130 DEG C, heat is rolled 24h, and measurement micro-foam drilling fluid heat is rolled the variation of front and back performance, and test-results is in table 4.
The test of table 4 circulative micro-foam polymer drilling fluid temperature resistance
Before and after heat is rolled, circulative micro-foam polymer drilling fluid density remains unchanged substantially, and viscosity, shear force slightly promote, and overall performance is stable.
(6) the anti-oil lubricant merit rating test of circulative micro-foam polymer drilling fluid
Get above-mentioned (2) formula drilling fluid and stir through at a high speed (11000r/min), add 18% NaCl at a high speed (11000r/min) stir, measure the variation that micro-foam drilling fluid adds performance after NaCl, test-results is in table 5.
The anti-salt test of table 5 circulative micro-foam polymer drilling fluid
Add before and after lubricant, circulative micro-foam polymer drilling fluid density remains unchanged substantially, and viscosity, shear force slightly promote, and overall performance is stable.
(7) circulative micro-foam polymer drilling fluid simulated leaking stoppage test
Simulation leak testing is carried out under DLM-01A type device for plugging, while doing back-up sand leak-proof leak-stopping experimental study, selects the quartz sand of 20～40 orders, 40-80 order and 3 groups of different-grain diameters of 80～120 orders to carry out plugging test as simulated formation, and experimental result is in table 6.
The test of table 6 circulative micro-foam polymer drilling fluid shutoff casting bed
Can go out from test result, circulative micro-foam polymer drilling fluid has significant minimizing leakage and eliminates the effect of missing at absorbent ground.Same seepage condition (leak path is identical, seepage pressure reduction identical), the leakage of circulative micro-foam polymer drilling fluid is less.This explanation, the peculiar property of microbubble, at Process of Leaking Stoppage, has played keying action.
(8) circulative micro-foam polymer drilling fluid froth breaking test
(1) density of measurement base fluid, is designated as d
1;
(2) in base fluid, add respectively 0.3% whipping agent BZ-MBS-1,0.3% suds-stabilizing agent BZ-MBSF-1, high-speed stirring 20min, measures system density, is designated as d
2;
(3) in the drilling fluid in step (2), add the defoamer BZ-MBDF of 0.75-1.0%, high-speed stirring 20min, measures system density, is designated as d
3;
Mud density recovery rate is calculated by following formula:
Experimental result is in table 7.
Table 7 circulative micro-foam polymer drilling fluid density is recovered test
| d 1(g/cm 3) | d 2(g/cm 3) | d 3(g/cm 3) | η（%） |
| 1.215 | 1.070 | 1.210 | 96.55 |
Can go out from test result, add after defoamer, density returns to base fluid density.
Wherein, described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.Described circulative micro-foam polymer drilling fluid has oil-proofness, after drilling operation finishes, can adopt defoamer BZ-MBDF froth breaking, and density returns to base fluid density, can be recycled, and described defoamer BZ-MBDF is the dimethyl silicone oil of viscosity 300-500mpa.s.Ammonium salt is provided by dragon's fountain chemical plant, Yanggu County, Shandong Province; Polyacrylic acid potassium KPA is provided by Fu Bang Science and Technology Ltd. of Xinxiang City; Anti-composite salt fluid loss agent KFH is provided by Chengxin Drilling-Extracting Adjuvant Co., Ltd., Puyang City; Cationic emulsified bitumen powder is provided by Ming Tai Chemical Co., Ltd. of Henan Province; Low fluorescence borehole wall stabilizer HQ-1 effluent Bei Huayun achievements of a ruler Chemical Co., Ltd. provides; Lubricant main component is white oil; Defoamer BZ-MBDF is the dimethyl silicone oil of viscosity 300-500mpa.s.
Embodiment 10 application examples
Jilin Oil Field sea 115 blocks are positioned at the south of Haituozi Oilfield, and extra large lump area Qingshankou group and spring head group formation fracture are grown, and mostly are vertically split and map cracking, easily cause drilling fluid leakage in drilling process, bring very large difficulty to construction.Statistics shows, the annual leakage incidence in extra large lump area is all more than 50%, and wastage is large.Wherein Hai51Jing spudded on July 19th, 2005, and leakage phenomena occurs in drilling process, and 1538～1569m misses 60m
3, 1660～1686m misses 30m
3; 1661～1695m misses 30m
3; 2223～2225m misses 45m
3.
At 4 mouthfuls of wells of extra large lump block application circulative micro-foam polymer drilling fluid system finishing drilling, two mouthfuls of inclined shafts, two mouthfuls of water horizontal wells, have obtained significant effect, and leakage incidence is 0, has effectively protected hydrocarbon zone, has shortened drilling period.
Wherein, flat 6 wells of extra large G are a bite recovery wells, and well type is horizontal well.Sea flat 6 wells of G start foaming from 1600m, and drilling fluid is modified as to micro-foam drilling fluid system, successfully by drilling fluid density from 1.23g/cm
3be down to 1.15g/cm
3, finishing drilling well depth 2145m, froth breaking after finishing drilling, density returns to 1.23g/cm
3.In drilling process, do not occur drilling fluid leakage, wellbore stability, has reached the object of the on-the-spot leak-proof leak-stopping of micro-foam drilling fluid technology.
Above-described embodiment is described the preferred embodiment of the present invention; not scope of the present invention is limited; design under the prerequisite of spirit not departing from the present invention; various distortion and improvement that those of ordinary skill in the art make technical scheme of the present invention, all should fall in the definite protection domain of the claims in the present invention book.
Claims (9)
1. a circulative micro-foam polymer drilling fluid, it is characterized in that: comprise following component: in every liter of clear water, add 40-50 gram of wilkinite, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5-10 gram of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,1-6 gram of whipping agent BZ-MBS-1,1-6 gram of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants.
2. circulative micro-foam polymer drilling fluid according to claim 1, is characterized in that: described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.
3. a circulative micro-foam polymer drilling fluid, is characterized in that: comprise following component: in every liter of clear water, add 40-50 gram of wilkinite, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5-10 gram of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,1-6 gram of whipping agent BZ-MBS-1,1-6 gram of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants, some barite BaSO4.
4. circulative micro-foam polymer drilling fluid according to claim 3, is characterized in that: described BaSO
4addition be 20%～30% of drilling fluid total mass.
5. circulative micro-foam polymer drilling fluid according to claim 3, is characterized in that: comprise following component: in every liter of clear water, add 40 grams of wilkinites, 5 grams of soda ash, 15 grams of ammonium salts, 3 grams of polyacrylic acid potassium KPA, 10 grams of anti-composite salt fluid loss agent KFH, 5 grams of Repone K, 10 grams of cationic emulsified bitumen powder, 20 grams low fluorescence borehole wall stabilizer HQ-1,3 grams of whipping agent BZ-MBS-1,3 grams of suds-stabilizing agent BZ-MBSF-1,10 grams of lubricants, 300 grammes per square metre spar BaSO
4.
6. according to the circulative micro-foam polymer drilling fluid described in claim 4 or 5, it is characterized in that: described whipping agent BZ-MBS-1 is that mass ratio is the basic sodium sulfonate of sodium lauryl sulphate, dodecane of 6.5:3:0.5 and the mixture of tripoly phosphate sodium STPP; Described suds-stabilizing agent is that mass ratio is the silicone resin polyethers emulsion of 7:3 and the mixture of lauryl alcohol; Described lubricant is white oil, and described wilkinite is calcium-base bentonite, 75 μ m tail over≤and 4.0%; Described ammonium salt is hydrolyzed polyacrylonitrile ammonium salt.
7. circulative micro-foam polymer drilling fluid according to claim 6, it is characterized in that: described circulative micro-foam polymer drilling fluid has oil-proofness, after finishing, drilling operation can adopt defoamer BZ-MBDF froth breaking, density returns to base fluid density, can be recycled, described defoamer BZ-MBDF is the dimethyl silicone oil of viscosity 300-500mpa.s.
8. the preparation method of the circulative micro-foam polymer drilling fluid described in claim 1 or 2, is characterized in that: comprise the steps:
By feed hopper or tank face, according to reinforced order, in clear water, add in proportion wilkinite aquation, add successively again soda ash, ammonium salt, polyacrylic acid potassium KPA, anti-composite salt fluid loss agent KFH, Repone K, cationic emulsified bitumen powder, low fluorescence borehole wall stabilizer HQ-1 also stirs, measure its performance, performance meets after design needs, add suds-stabilizing agent BZ-MBSF-1, after slowly adding and stirring, add again whipping agent BZ-MBS-1, utilize agitator, mud gun and the recycle system, fully stir, spray thorn, the systemic circulation of high-low pressure double pump, make its abundant mixed dissolution, and abundant cycle balance, be 45～65s until form viscosity, density is at 1.03～1.05g/cm
3material, for subsequent use, prepare separately in proportion lubricant.
9. the preparation method of the circulative micro-foam polymer drilling fluid described in any claim in claim 3-7, is characterized in that: comprise the steps:
By feed hopper or tank face, according to reinforced order, in clear water, add in proportion wilkinite aquation, add successively again soda ash, ammonium salt, polyacrylic acid potassium KPA, anti-composite salt fluid loss agent KFH, Repone K, cationic emulsified bitumen powder, low fluorescence borehole wall stabilizer HQ-1, barite BaSO4 also stirs, measure its performance, performance meets after design needs, add suds-stabilizing agent BZ-MBSF-1, after slowly adding and stirring, add again whipping agent BZ-MBS-1, utilize agitator, mud gun and the recycle system, fully stir, spray thorn, the systemic circulation of high-low pressure double pump, make its abundant mixed dissolution, and abundant cycle balance, be 45～65s until form viscosity, density is at 1.03～1.05g/cm
3material, for subsequent use, prepare separately in proportion lubricant.
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| CN104277803A (en) * | 2014-09-05 | 2015-01-14 | 中国石油集团渤海钻探工程有限公司 | KCl blocking and anti-sloughing drilling fluid and preparation method thereof |
| CN104893696A (en) * | 2015-06-19 | 2015-09-09 | 中国地质科学院探矿工艺研究所 | Collapse-preventing and leakage-preventing drilling flushing fluid while drilling and field preparation method thereof |
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| CN101182409A (en) * | 2007-10-27 | 2008-05-21 | 东营泰尔石油技术有限公司 | Anti-collapse circulative micro-foam drilling fluid or well completion fluid |
| CN102199417A (en) * | 2010-03-23 | 2011-09-28 | 张以河 | Technology for preparing mineral composite solid lubricant for well drilling on basis of by-products in chemical industry |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101182409A (en) * | 2007-10-27 | 2008-05-21 | 东营泰尔石油技术有限公司 | Anti-collapse circulative micro-foam drilling fluid or well completion fluid |
| CN102199417A (en) * | 2010-03-23 | 2011-09-28 | 张以河 | Technology for preparing mineral composite solid lubricant for well drilling on basis of by-products in chemical industry |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104277803A (en) * | 2014-09-05 | 2015-01-14 | 中国石油集团渤海钻探工程有限公司 | KCl blocking and anti-sloughing drilling fluid and preparation method thereof |
| CN104893696A (en) * | 2015-06-19 | 2015-09-09 | 中国地质科学院探矿工艺研究所 | Collapse-preventing and leakage-preventing drilling flushing fluid while drilling and field preparation method thereof |
| CN104893696B (en) * | 2015-06-19 | 2017-09-29 | 中国地质科学院探矿工艺研究所 | Collapse-preventing and leakage-preventing drilling flushing fluid while drilling and field preparation method thereof |
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