CN103614122B - A kind of oil base drilling fluid for shale gas production drilling - Google Patents
A kind of oil base drilling fluid for shale gas production drilling Download PDFInfo
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- CN103614122B CN103614122B CN201310570934.4A CN201310570934A CN103614122B CN 103614122 B CN103614122 B CN 103614122B CN 201310570934 A CN201310570934 A CN 201310570934A CN 103614122 B CN103614122 B CN 103614122B
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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
- C09K8/32—Non-aqueous well-drilling compositions, e.g. oil-based
Abstract
The present invention relates to a kind of oil base drilling fluid for shale gas production drilling, belong to petroleum drilling engineering drilling liquid technology field, it is characterised in that it consists of primary emulsion, auxiliary emulsifying agent, wetting agent, alkalinity regulator, organoclay, viscosifier, fluid loss additive, heavy weight additive, aqueous phase, oil phase；Wherein the percentage by weight of each component is: primary emulsion: 0.2%-2%；Auxiliary emulsifying agent: 0.1%-1%；Wetting agent: 0%-1.5%；Alkalinity regulator: 0.2%-1.5%；Organoclay: 0%-1.5%；Viscosifier: 0%-1.5%；Fluid loss additive: 0.2%-2%；Heavy weight additive: 0%-80%；Aqueous phase: 0%-20%；Oil phase: surplus。Oil base drilling fluid provided by the invention, the shale gas drilling well particular/special requirement to drilling fluid can be met, all there is good stability, good inhibition and lubricity at low temperatures and high temperatures, there is ratio of dynamic shear force/yield value to plastic viscosity height, the feature that plastic viscosity is low, applied widely, good in economic efficiency。
Description
Technical field:
The present invention relates to a kind of oil base drilling fluid for shale gas production drilling, belong to petroleum drilling engineering drilling liquid technology field。
Background technology:
Drilling fluid refers to the general name of the various circulation of fluids meeting drilling well job demand in oil/gas drilling process with its several functions; it mainly has the landwaste that carries and suspend, stabilizing borehole and equilibrium strata pressure, cooling and lubrication drilling tool, the transmission effect such as hydrodynamic force, reservoir protec-tion, is the important component part of drilling engineering technology。
Shale gas belongs to unconventional energy resource, and the oil in place of existing data display shale gas reaches more than 1 tcm, and recoverable reserves is huge, but the exploitation of shale gas there is also certain difficulty；From drilling well angle, adopting the casing programme of long horizontal well, and stratum belongs to mud shale, very easily hydration swelling caves in and causes borehole well instability, and the use of drilling fluid is all had higher requirement by this。Oil base drilling fluid refers to the drilling fluid using oil as continuous phase; as far back as the twenties in last century; with regard to the situation that handlebar crude oil uses as drilling fluid; along with oil field development is more and more higher to the requirement of reservoir protection and drilling well; the performance of drilling fluid be it is also proposed higher requirement; oil base drilling fluid compared with water-base drilling fluid, have can high temperature resistance, salt resistance, be conducive to wellbore stability, lubricity good and to lot of advantages such as reservoir damage are little。For the casing programme of shale gas drilling well and long horizontal displacement, oil base drilling fluid must have good inhibition and greasy property, and its ratio of dynamic shear force/yield value to plastic viscosity requires higher, and plastic viscosity requires relatively low, could meet the needs of long horizontal sections drilling well。Therefore it provides a kind of high performance oil base drilling fluid to shale gas drilling engineering it is critical that。
Summary of the invention:
In order to overcome the deficiencies in the prior art, it is an object of the invention to provide a kind of oil base drilling fluid for shale gas production drilling, the shale gas drilling well particular/special requirement to drilling fluid can be met, all there is good stability, good inhibition and lubricity at low temperatures and high temperatures, there is ratio of dynamic shear force/yield value to plastic viscosity height, the feature that plastic viscosity is low, applied widely, good in economic efficiency。
The present invention realizes above-mentioned purpose by following technical solution。
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, it consists of primary emulsion, auxiliary emulsifying agent, wetting agent, alkalinity regulator, organoclay, viscosifier, fluid loss additive, heavy weight additive, aqueous phase, oil phase；Wherein the percentage by weight of each component is:
Primary emulsion: 0.2%-2%；
Auxiliary emulsifying agent: 0.1%-1%；
Wetting agent: 0%-1.5%；
Alkalinity regulator: 0.2%-1.5%；
Organoclay: 0%-1.5%；
Viscosifier: 0%-1.5%；
Fluid loss additive: 0.2%-2%；
Heavy weight additive: 0%-80%；
Aqueous phase: 0%-20%；
Oil phase: surplus；
Described primary emulsion is chain alkyl fatty acid acyl amine nonionic surfactant；
Described auxiliary emulsifying agent is the polyamide-based nonionic surfactant of chain alkyl；
Described wetting agent is chain alkyl polyethenoxy ether class nonionic surfactant；
Described alkalinity regulator is calcium oxide, magnesium oxide, sodium hydroxide, magnesium hydroxide, can be used alone, it is also possible to composite use；
Described organoclay and viscosifier are organobentonite, organic montmorillonite, polyamide, fatty acid soaps, can be used alone, it is also possible to composite use；
Described fluid loss additive is sulfonated gilsonite, modified sulfonated gilsonite, bitumen, humic acid acetamide, walchowite, emulsified asphalt, can be used alone, it is also possible to composite use；
Described heavy weight additive is Iron Ore Powder, barite, limestone, can be used alone, it is also possible to composite use；
Described aqueous phase is concentration is the calcium chloride water of 20-30%；
Described oil phase is 0# diesel oil, 3# white oil, 5# white oil, makings oil。
The present invention has the advantages that compared with prior art
1, drilling fluid is applied widely, and its oil-water ratio can be adjustable between 60:40-100:0, and density can at 0.90-2.30g/cm3Between adjustable, can reach to apply effect preferably at 50 DEG C-200 DEG C。
2, the emulsion-breaking voltage of drilling fluid reaches more than 600Volts, and ratio of dynamic shear force/yield value to plastic viscosity is high, and High Temperature High Pressure dehydration is less than 5mL。
3, the antifouling property of drilling fluid system is better, has good rejection, and mud shale rolls the response rate and reaches more than 90%；Having good greasy property, lubricating coefficient is less than 0.10；Having good reservoir protection effect, permeability resume figure reaches more than 90%。
4, under relatively low emulsifying agent dosage, just it is obtained in that the oil base drilling fluid of stable performance, saves use cost。
Detailed description of the invention:
Below in conjunction with specific embodiment, the invention will be further described:
Embodiment 1:
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, wherein the percentage by weight of each component is: primary emulsion: 1.0%；Auxiliary emulsifying agent: 0.15%；Wetting agent: 0.5%；Calcium oxide: 1.0%；Organoclay: 1.0%；Viscosifier: 0%；Fluid loss additive: 1.0%；Heavy weight additive: 23%；Aqueous phase: 18%；Oil phase: surplus；
Density: 1.20g/cm3；Experiment condition: 100 DEG C of heat roll 16h。
Embodiment 2:
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, wherein the percentage by weight of each component is: primary emulsion: 0.9%；Auxiliary emulsifying agent: 0.3%；Wetting agent: 0%；Calcium oxide: 1.2%；Organoclay: 0.6%；Viscosifier: 0.6%；Fluid loss additive: 0.6%；Heavy weight additive: 41%；Aqueous phase: 14%；Oil phase: surplus；
Density: 1.40g/cm3；Experiment condition: 70 DEG C of heat roll 16h。
Embodiment 3:
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, wherein the percentage by weight of each component is: primary emulsion: 1.6%；Auxiliary emulsifying agent: 0.5%；Wetting agent: 0.5%；Calcium oxide: 1.0%；Organoclay: 1.1%；Viscosifier: 0%；Fluid loss additive: 1.6%；Heavy weight additive: 45.7%；Aqueous phase: 12.4%；Oil phase: surplus；
Density: 1.50g/cm3；Experiment condition: 100 DEG C of heat roll 16h。
Embodiment 4:
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, wherein the percentage by weight of each component is: primary emulsion: 0.5%；Auxiliary emulsifying agent: 0.1%；Wetting agent: 0.5%；Calcium oxide: 0.2%；Organoclay: 0.2%；Viscosifier: 0%；Fluid loss additive: 1.0%；Heavy weight additive: 77.8%；Aqueous phase: 5.3%；Oil phase: surplus；
Density: 2.30g/cm3；Experiment condition: 180 DEG C of heat roll 16h。
Table 1 oil base drilling fluid performance
| System | AV | PV | YP | YP/PV | Φ6/Φ3 | ES | HTHP | HSL | XS |
| Example 1 | 32 | 22 | 10 | 0.45 | 10/9 | 879 | 3.4 | 93.45 | 0.07 |
| Example 2 | 36 | 25 | 11 | 0.44 | 11/10 | 1468 | 2.8 | 97.63 | 0.07 |
| Example 3 | 38 | 27 | 11 | 0.41 | 13/11 | 954 | 4.2 | 95.32 | 0.08 |
| Example 4 | 67 | 55 | 8 | 0.15 | 9/8 | 868 | 4.6 | 92.81 | 0.10 |
Wherein: rheological characteristic test temperature is 50 DEG C；
AV: the apparent viscosity of drilling fluid, mPa s；
PV: the plastic viscosity of drilling fluid, mPa s；
YP: the yield value of drilling fluid, Pa；
YP/PV: the ratio of dynamic shear force/yield value to plastic viscosity of drilling fluid；
ES: the emulsion-breaking voltage of drilling fluid, Volts；
HTHP: drilling fluid High Temperature High Pressure dehydration under heat rolls temperature, ml；
HSL: the mud shale rolling response rate in drilling fluid, %；
XS: the lubricating coefficient of drilling fluid, dimensionless。
As can be seen from the above table, better performances in each embodiment, ratio of dynamic shear force/yield value to plastic viscosity is high, electrical stability is high, High Temperature High Pressure dehydration is low, it is high to roll the response rate, lubricating coefficient is low, all has good performance, it is possible to meet the needs of shale gas drilling well at each temperature and each density。
Claims (1)
1. the oil base drilling fluid for shale gas production drilling, it is characterised in that it consists of primary emulsion, auxiliary emulsifying agent, wetting agent, alkalinity regulator, organoclay, viscosifier, fluid loss additive, heavy weight additive, aqueous phase, oil phase；Wherein the percentage by weight of each component is:
Primary emulsion: 0.2%-2%；
Auxiliary emulsifying agent: 0.1%-1%；
Wetting agent: 0%-1.5%；
Alkalinity regulator: 0.2%-1.5%；
Organoclay: 0%-1.5%；
Viscosifier: 0%-1.5%；
Fluid loss additive: 0.2%-2%；
Heavy weight additive: 0%-80%；
Aqueous phase: 0%-20%；
Oil phase: surplus；
Described primary emulsion is chain alkyl fatty acid acyl amine nonionic surfactant；
Described auxiliary emulsifying agent is the polyamide-based nonionic surfactant of chain alkyl；
Described wetting agent is chain alkyl polyethenoxy ether class nonionic surfactant；
Described alkalinity regulator is calcium oxide, magnesium oxide, sodium hydroxide, magnesium hydroxide, can be used alone, it is also possible to composite use；
Described organoclay and viscosifier are organobentonite, organic montmorillonite, polyamide, fatty acid soaps, can be used alone, it is also possible to composite use；
Described fluid loss additive is sulfonated gilsonite, modified sulfonated gilsonite, bitumen, humic acid acetamide, walchowite, emulsified asphalt, can be used alone, it is also possible to composite use；
Described heavy weight additive is Iron Ore Powder, barite, limestone, can be used alone, it is also possible to composite use；
Described aqueous phase is concentration is the calcium chloride water of 20-30%；
Described oil phase is 0# diesel oil, 3# white oil, 5# white oil, makings oil。
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| CN201310570934.4A CN103614122B (en) | 2013-11-13 | 2013-11-13 | A kind of oil base drilling fluid for shale gas production drilling |
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| CN201310570934.4A CN103614122B (en) | 2013-11-13 | 2013-11-13 | A kind of oil base drilling fluid for shale gas production drilling |
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| CN103614122A CN103614122A (en) | 2014-03-05 |
| CN103614122B true CN103614122B (en) | 2016-06-22 |
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| CN103923623B (en) * | 2014-04-03 | 2016-05-25 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of oil base drilling fluid |
| CN104974721A (en) * | 2014-04-11 | 2015-10-14 | 中国石油化工集团公司 | Preparation used in high-temperature-resistant oil-based drilling fluid and preparation method thereof |
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| CN104962258A (en) * | 2015-06-17 | 2015-10-07 | 成都高普石油工程技术有限公司 | Oil-based fluid special for petroleum well control |
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| CN106318349A (en) * | 2015-07-08 | 2017-01-11 | 中石化石油工程技术服务有限公司 | High-density whole-oil-base drilling fluid |
| CN105349124A (en) * | 2015-11-18 | 2016-02-24 | 辽宁石油化工大学 | Oil-based drilling fluid with high temperature and high pressure resistance |
| CN107325797B (en) * | 2016-04-28 | 2021-05-14 | 中国石油化工股份有限公司 | Low oil-water ratio oil-based drilling fluid and preparation method thereof |
| CN106520088A (en) * | 2016-09-20 | 2017-03-22 | 中石化石油工程技术服务有限公司 | Oil-based drilling fluid for protecting shale gas reservoir |
| CN107043615B (en) * | 2017-04-20 | 2020-08-28 | 长江大学 | Oil-based drilling fluid with low addition of emulsifier |
| CN107163921A (en) * | 2017-05-02 | 2017-09-15 | 中国石油天然气股份有限公司 | A kind of oil base drilling fluid and preparation method thereof |
| CN107033861B (en) * | 2017-06-28 | 2022-05-20 | 浙江海洋大学 | Oil-based drilling fluid filtrate reducer and preparation method thereof |
| CN108559460A (en) * | 2018-03-14 | 2018-09-21 | 上海工程技术大学 | No-dig technique directed drilling formula of liquid for loose crushing layer and water-sensitive strata |
| CN109266319B (en) * | 2018-09-27 | 2021-03-30 | 中国石油天然气股份有限公司 | Full-oil-based drilling fluid and preparation method and application thereof |
| CN110713822A (en) * | 2019-09-10 | 2020-01-21 | 长江大学 | High-temperature high-density oil-based drilling fluid |
| CN110564385A (en) * | 2019-10-16 | 2019-12-13 | 西南石油大学 | High-temperature-resistant high-density oil-based drilling fluid for drilling shale and preparation method thereof |
| CN113122197A (en) * | 2020-01-11 | 2021-07-16 | 中石化石油工程技术服务有限公司 | Shale oil horizontal well drilling fluid and preparation method thereof |
| CN111484836A (en) * | 2020-02-26 | 2020-08-04 | 四川泓华油气田工程科技有限公司 | Special high-temperature-resistant drilling fluid for drilling and producing shale gas deep well |
| CN111440600A (en) * | 2020-03-31 | 2020-07-24 | 安徽中科日升科技有限公司 | Lubrication inhibitor for drilling fluid and preparation method thereof |
| CN111440602B (en) * | 2020-03-31 | 2022-11-15 | 安徽中科日升科技有限公司 | Thixotropic oil-based drilling fluid |
| CN114806518A (en) * | 2021-01-21 | 2022-07-29 | 中国石油天然气股份有限公司 | Oil-based drilling fluid composition and oil-based drilling fluid |
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Denomination of invention: An oil-based drilling fluid for Shale gas development drilling Effective date of registration: 20230530 Granted publication date: 20160622 Pledgee: Bank of China Limited Jingzhou Branch Pledgor: JINGZHOU JIAHUA TECHNOLOGY Co.,Ltd. Registration number: Y2023420000213 |
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