CN103614122A - Oil-based drilling fluid for development drilling of shale gas - Google Patents
Oil-based drilling fluid for development drilling of shale gas Download PDFInfo
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- CN103614122A CN103614122A CN201310570934.4A CN201310570934A CN103614122A CN 103614122 A CN103614122 A CN 103614122A CN 201310570934 A CN201310570934 A CN 201310570934A CN 103614122 A CN103614122 A CN 103614122A
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- oil
- drilling fluid
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- drilling
- shale gas
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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 invention relates to an oil-based drilling fluid for development drilling of a shale gas, and belongs to the technical field of drilling fluids for petroleum drilling engineering. The oil-based drilling fluid is characterized by being prepared from the following components by weight percent: 0.2% to 2% of main emulsifier, 0.1% to 1% of auxiliary emulsifier, 0% to 1.5% of wetting agent, 0.2% to 1.5% of alkalinity regulating agent, 0% to 1.5% of organic soil, 0% to 1.5% of tackifier, 0.2% to 2% of filtrate reducer, 0% to 80% of weighting agent, 0% to 20% of water phase and the balance of oil phase. The oil-based drilling fluid can be used for meeting a special requirement of the shale gas drilling to the drilling fluid, and is good in stability, inhibitory capability and lubricity even under low and high temperatures. The oil-based drilling fluid has the characteristics of high dynamic plastic ratio, low plastic viscosity, wide application range and good economic benefit.
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 that meets the various circulating fluid of drilling well need of work in oil/gas drilling process with its several functions; it is mainly to have the effects such as carry and suspend landwaste, stabilizing borehole and equilibrium strata pressure, Cooling and Lubricator drilling tool, transmission water power, protection hydrocarbon zone, is the important component part of drilling engineering technology.
Shale gas belongs to unconventional energy resource, and more than existing data shows that the geologic reserve of shale gas reaches 1 tcm, workable reserve is huge, but the exploitation of shale gas also exists certain difficulty; From drilling well angle, adopt the hole structure of long horizontal well, and stratum belongs to mud shale, very easily hydration swelling caves in and causes borehole well instability, and this all has higher requirement to the use of drilling fluid.Oil base drilling fluid refers to usings the drilling fluid of oil as external phase; as far back as the twenties in last century; situation about using as drilling fluid with regard to handlebar crude oil; along with oil-field development is more and more higher to the requirement of reservoir protection and drilling well; performance to drilling fluid is also had higher requirement; oil base drilling fluid is compared with water-base drilling fluid, and having can high temperature resistance, salt resistance, be conducive to wellbore stability, oilness is good and to lot of advantages such as reservoir damage are little.For the hole structure of shale gas drilling well and long horizontal shift, oil base drilling fluid must have good inhibition and lubricity, and its ratio of dynamic shear force/yield value to plastic viscosity has relatively high expectations, and that plastic viscosity requires is lower, could meet the needs of long horizontal sections drilling well.Therefore, providing a kind of high performance oil base drilling fluid is vital to shale gas drilling engineering.
Summary of the invention:
In order to overcome the deficiencies in the prior art, the object of the present invention is to provide a kind of oil base drilling fluid for shale gas production drilling, can meet the particular requirement of shale gas drilling well to drilling fluid, under low temperature and high temperature, all there is good stability, good inhibition and oilness, there is ratio of dynamic shear force/yield value to plastic viscosity high, 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, organophilic clay, tackifier, fluid loss agent, weighting agent, water, oil phase; Wherein the weight percent 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%;
Organophilic clay: 0%-1.5%;
Tackifier: 0%-1.5%;
Fluid loss agent: 0.2%-2%;
Weighting agent: 0%-80%;
Water: 0%-20%;
Oil phase: surplus;
Described primary emulsion is chain alkyl fatty acid acyl amine nonionogenic tenside;
Described auxiliary emulsifying agent is the polyamide-based nonionogenic tenside 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, and also can compositely use;
Described organophilic clay and tackifier are organobentonite, organic montmorillonite, polyamide resin, fatty acid soaps, can be used alone, and also can compositely use;
Described fluid loss agent is sulfonated gilsonite, modified sulfonated gilsonite, rock asphalt, humic acid acetamide, valchovite, emulsified bitumen, can be used alone, and also can compositely use;
Described weighting agent is powdered iron ore, barite, Wingdale, can be used alone, and also can compositely use;
Described water is that 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 following beneficial effect compared with prior art:
1, drilling fluid is applied widely, and its water oil ratio can be adjustable between 60:40-100:0, and density can be at 0.90-2.30g/cm
3between adjustable, at 50 ℃-200 ℃, can reach good effect.
2, more than the emulsion-breaking voltage of drilling fluid reaches 600Volts, 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 the mud shale rolling rate of recovery reaches more than 90%; Have good lubricity, lubricating coefficient is less than 0.10; Have good reservoir protection effect, permeability resume figure reaches more than 90%.
4, under lower emulsifying agent dosage, just can obtain the oil base drilling fluid of stable performance, save use cost.
Embodiment:
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 weight percent of each component is: primary emulsion: 1.0%; Auxiliary emulsifying agent: 0.15%; Wetting agent: 0.5%; Calcium oxide: 1.0%; Organophilic clay: 1.0%; Tackifier: 0%; Fluid loss agent: 1.0%; Weighting agent: 23%; Water: 18%; Oil phase: surplus;
Density: 1.20g/cm
3; Experiment condition: 100 ℃ of heat are rolled 16h.
Embodiment 2:
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, wherein the weight percent of each component is: primary emulsion: 0.9%; Auxiliary emulsifying agent: 0.3%; Wetting agent: 0%; Calcium oxide: 1.2%; Organophilic clay: 0.6%; Tackifier: 0.6%; Fluid loss agent: 0.6%; Weighting agent: 41%; Water: 14%; Oil phase: surplus;
Density: 1.40g/cm
3; Experiment condition: 70 ℃ of heat are rolled 16h.
Embodiment 3:
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, wherein the weight percent of each component is: primary emulsion: 1.6%; Auxiliary emulsifying agent: 0.5%; Wetting agent: 0.5%; Calcium oxide: 1.0%; Organophilic clay: 1.1%; Tackifier: 0%; Fluid loss agent: 1.6%; Weighting agent: 45.7%; Water: 12.4%; Oil phase: surplus;
Density: 1.50g/cm
3; Experiment condition: 100 ℃ of heat are rolled 16h.
Embodiment 4:
A kind of oil base drilling fluid for shale gas production drilling provided by the present invention, wherein the weight percent of each component is: primary emulsion: 0.5%; Auxiliary emulsifying agent: 0.1%; Wetting agent: 0.5%; Calcium oxide: 0.2%; Organophilic clay: 0.2%; Tackifier: 0%; Fluid loss agent: 1.0%; Weighting agent: 77.8%; Water: 5.3%; Oil phase: surplus;
Density: 2.30g/cm
3; Experiment condition: 180 ℃ of heat are rolled 16h.
Table 1 oil base drilling fluid performance
| System | AV | PV | YP | YP/PV | Φ 6/Φ 3 | 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 probe temperature is 50 ℃;
AV: the apparent viscosity of drilling fluid, mPas;
PV: the plastic viscosity of drilling fluid, mPas;
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 rolls the High Temperature High Pressure dehydration at temperature, ml in heat;
HSL: the rolling rate of recovery of mud shale in drilling fluid, %;
XS: the lubricating coefficient of drilling fluid, zero dimension.
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, elctrical stability is high, High Temperature High Pressure dehydration is low, the rolling rate of recovery is high, lubricating coefficient is low, under each temperature and each density, all has good performance, can meet the needs of shale gas drilling well.
Claims (3)
1. for an oil base drilling fluid for shale gas production drilling, it is characterized in that it consists of primary emulsion, auxiliary emulsifying agent, wetting agent, alkalinity regulator, organophilic clay, tackifier, fluid loss agent, weighting agent, water, oil phase; Wherein the weight percent 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%;
Organophilic clay: 0%-1.5%;
Tackifier: 0%-1.5%;
Fluid loss agent: 0.2%-2%;
Weighting agent: 0%-80%;
Water: 0%-20%;
Oil phase: surplus;
Described primary emulsion is chain alkyl fatty acid acyl amine nonionogenic tenside;
Described auxiliary emulsifying agent is the polyamide-based nonionogenic tenside 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, and also can compositely use;
Described organophilic clay and tackifier are organobentonite, organic montmorillonite, polyamide resin, fatty acid soaps, can be used alone, and also can compositely use;
Described fluid loss agent is sulfonated gilsonite, modified sulfonated gilsonite, rock asphalt, humic acid acetamide, valchovite, emulsified bitumen, can be used alone, and also can compositely use;
Described weighting agent is powdered iron ore, barite, Wingdale, can be used alone, and also can compositely use.
2. a kind of oil base drilling fluid for shale gas production drilling according to claim 1, is characterized in that described water is that concentration is the calcium chloride water of 20-30%.
3. a kind of oil base drilling fluid for shale gas production drilling according to claim 2, is characterized in that described oil phase is 0# diesel oil, 3# white oil, 5# white oil, makings oil.
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Cited By (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103923623A (en) * | 2014-04-03 | 2014-07-16 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil-based drilling fluid |
| CN104164224A (en) * | 2014-04-23 | 2014-11-26 | 中国石油化工股份有限公司 | Invert-emulsion drilling fluid, preparation method and application thereof |
| CN104610936A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气集团公司 | Filtrate loss reducer for full oil-based drilling fluid, and preparation method of filtrate loss reducer |
| CN104818002A (en) * | 2015-03-30 | 2015-08-05 | 中国石油大学(华东) | Filtrate reducer for palm oil, and preparation method thereof |
| 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 |
| 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 |
| CN105001843A (en) * | 2015-06-17 | 2015-10-28 | 成都高普石油工程技术有限公司 | Preparation method of oil-base drilling flushing 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 |
| 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 |
| 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 |
| CN107033861A (en) * | 2017-06-28 | 2017-08-11 | 浙江海洋大学 | A kind of fluid loss additive of oil-base drilling fluid and preparation method thereof |
| CN107043615A (en) * | 2017-04-20 | 2017-08-15 | 长江大学 | A kind of oil base drilling fluid of low emulsifying agent addition |
| 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 |
| CN107325797A (en) * | 2016-04-28 | 2017-11-07 | 中国石油化工股份有限公司 | A kind of low oil-water ratio oil base drilling fluid 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 |
| CN109266319A (en) * | 2018-09-27 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of full oil base drilling fluid and its preparation method and application |
| 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 |
| CN110713822A (en) * | 2019-09-10 | 2020-01-21 | 长江大学 | High-temperature high-density oil-based drilling fluid |
| 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 |
| CN111440602A (en) * | 2020-03-31 | 2020-07-24 | 安徽中科日升科技有限公司 | Thixotropic oil-based drilling fluid |
| 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 |
| 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 |
| 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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| CN103131398A (en) * | 2013-03-15 | 2013-06-05 | 中国石油集团渤海钻探工程有限公司 | High-electric-stability water-in-oil drilling fluid |
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| CN103131398A (en) * | 2013-03-15 | 2013-06-05 | 中国石油集团渤海钻探工程有限公司 | High-electric-stability water-in-oil drilling fluid |
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| CN103923623A (en) * | 2014-04-03 | 2014-07-16 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | Oil-based 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 |
| CN104164224A (en) * | 2014-04-23 | 2014-11-26 | 中国石油化工股份有限公司 | Invert-emulsion drilling fluid, preparation method and application thereof |
| CN104164224B (en) * | 2014-04-23 | 2019-06-25 | 中国石油化工股份有限公司 | A kind of inverse emulsion drilling fluid and its preparation method and application |
| CN104610936A (en) * | 2014-12-31 | 2015-05-13 | 中国石油天然气集团公司 | Filtrate loss reducer for full oil-based drilling fluid, and preparation method of filtrate loss reducer |
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| CN104818002A (en) * | 2015-03-30 | 2015-08-05 | 中国石油大学(华东) | Filtrate reducer for palm oil, and preparation method thereof |
| 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 |
| CN105001843A (en) * | 2015-06-17 | 2015-10-28 | 成都高普石油工程技术有限公司 | Preparation method of oil-base drilling flushing fluid |
| 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 |
| CN107325797A (en) * | 2016-04-28 | 2017-11-07 | 中国石油化工股份有限公司 | A kind of low oil-water ratio oil base drilling fluid and preparation method thereof |
| 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 |
| CN107043615A (en) * | 2017-04-20 | 2017-08-15 | 长江大学 | A kind of oil base drilling fluid of low emulsifying agent addition |
| 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 |
| CN107033861A (en) * | 2017-06-28 | 2017-08-11 | 浙江海洋大学 | A kind of fluid loss additive 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 |
| CN109266319A (en) * | 2018-09-27 | 2019-01-25 | 中国石油天然气股份有限公司 | A kind of full oil base drilling fluid and its preparation method and application |
| 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 |
| CN111440602A (en) * | 2020-03-31 | 2020-07-24 | 安徽中科日升科技有限公司 | Thixotropic oil-based drilling fluid |
| 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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Effective date of registration: 20220826 Address after: 434402 intersection of Liaoyuan Road East and shacen Road, development zone, Jingzhou City, Hubei Province (group 2, Lianxin Village) Patentee after: JINGZHOU JIAHUA TECHNOLOGY Co.,Ltd. Address before: 434023 No. 1 South Ring Road, Hubei, Jingzhou Patentee before: Yangtze University Patentee before: JINGZHOU JIAHUA TECHNOLOGY Co.,Ltd. |
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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 |