CN105295863A - Water-based drilling fluid inhibitor and water-based drilling fluid and application thereof - Google Patents
Water-based drilling fluid inhibitor and water-based drilling fluid and application thereof Download PDFInfo
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- CN105295863A CN105295863A CN201510707115.9A CN201510707115A CN105295863A CN 105295863 A CN105295863 A CN 105295863A CN 201510707115 A CN201510707115 A CN 201510707115A CN 105295863 A CN105295863 A CN 105295863A
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- water
- drilling fluid
- base drilling
- inhibitor
- shale
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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
- C09K8/03—Specific additives for general use in well-drilling compositions
- C09K8/035—Organic additives
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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
- C09K8/06—Clay-free compositions
- C09K8/12—Clay-free compositions containing synthetic organic macromolecular compounds or their precursors
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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
- C09K2208/12—Swell inhibition, i.e. using additives to drilling or well treatment fluids for inhibiting clay or shale swelling or disintegrating
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- 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)
- Dispersion Chemistry (AREA)
- Earth Drilling (AREA)
Abstract
The invention provides a water-based drilling fluid inhibitor and water-based drilling fluid and application thereof. The water-based drilling fluid inhibitor comprises sorbitan oleate. The water-based drilling fluid comprises the water-based drilling fluid inhibitor. By means of the water-based drilling fluid inhibitor and the water-based drilling fluid, hydration expansion of shale gas shale can be effectively restrained, the expansion rate of the shale can be obviously decreased, and borehole wall sloughing, jamming of a drilling tool and the like can be prevented.
Description
Technical field
The present invention relates to a kind of drilling fluid inhibitor and drilling fluid and application thereof, particularly a kind of water-base drilling fluid inhibitor and water-base drilling fluid and application thereof, belong to petroleum drilling technology field.
Background technology
China's shale gas resources workable reserve reaches 10.3 × 10
12-47.0 × 10
12cubic meter, have good fair exploration, once successfully mass-producing exploratory development, effectively can alleviate China's oil gas imbalance between supply and demand, therefore shale gas exploration and development becomes " 12 " national Major Strategic.
Present stage, horizontal drilling technology is one of core technology of shale gas exploitation, is widely used in shale gas production drilling.In order to later stage waterfrac treatment volume increase, lateral segment is distributed in natural fracture more and grows stratum, and creeps into along minimum horizontal principal stress direction.In drilling process, it is inner that drilling fluid filtrate very easily invades shale gas shale, easily causes the hydration swelling of shale gas shale, thus cause slump in, bit freezing etc.Therefore, the hydration swelling of shale gas shale is suppressed to become one of gordian technique difficult problem of horizontal well development shale gas resource.
Inhibitor, also known as anti-sloughing agent, is mainly used in preparing drilling fluid, when drilling fluid creeps into shale gas shale formation, can suppresses the hydration swelling of shale gas shale, and then the slump in, bit freezing etc. that prevent the hydration swelling due to shale gas shale from causing.
At present, what China's shale gas horizontal well drilling used mostly is oil base drilling fluid, although oil base drilling fluid has excellent inhibition, but its preparation cost is higher and there is environmental issue, Slot Handling difficulty, once there is circulation problems, will cause heavy economic losses; Water-base drilling fluid then has with low cost and advantages of environment protection, but in shale gas horizontal well drilling, conventional water-base drilling fluid is difficult to this problem of hydration swelling solving shale gas shale, thus is difficult to the engineering needs meeting the exploration of shale gas horizontal well.
Therefore, to the research of the water-base drilling fluid inhibitor that can effectively suppress Shale Hydration to expand and water-base drilling fluid, have important practical significance.
Summary of the invention
In order to solve the problems of the technologies described above, the object of the present invention is to provide a kind of hydration swelling of effective suppression shale gas shale, effectively reduce shale expansion rate, prevent slump in, the water-base drilling fluid inhibitor of bit freezing and water-base drilling fluid.
In order to realize above-mentioned technical purpose, the present invention provide firstly a kind of water-base drilling fluid inhibitor, this water-base drilling fluid inhibitor packages oil scraper acid sorbitol ester.
In the present invention, the various oleic acid sorbitol esters that oleic acid sorbyl alcohol (span80) can be commonly used for this area, by commercially available.
The invention provides the application of above-mentioned oleic acid sorbyl alcohol as water-base drilling fluid inhibitor.
In above-mentioned water-base drilling fluid inhibitor provided by the invention, preferably, this water-base drilling fluid inhibitor also comprises water.
In above-mentioned water-base drilling fluid inhibitor provided by the invention, preferably, the weight of described oleic acid sorbitol ester is the 1%-10% of this water-base drilling fluid inhibitor gross weight.
In above-mentioned water-base drilling fluid inhibitor provided by the invention, preferably, the weight of described oleic acid sorbitol ester is the 3%-7% of this water-base drilling fluid inhibitor gross weight.
Above-mentioned water-base drilling fluid inhibitor provided by the invention may be used for the hydration swelling suppressing shale gas shale.
Present invention also offers a kind of water-base drilling fluid, this water-base drilling fluid comprises above-mentioned water-base drilling fluid inhibitor.
The invention provides the application of above-mentioned oleic acid sorbyl alcohol as water-base drilling fluid.
In above-mentioned water-base drilling fluid provided by the invention, preferably, the weight of described oleic acid sorbitol ester is the 1%-10% of this water-base drilling fluid gross weight; More preferably, the weight of described oleic acid sorbitol ester is the 3%-7% of this water-base drilling fluid gross weight.
In above-mentioned water-base drilling fluid provided by the invention, preferably, the combination of one or more in clay, plugging agent, weighting agent, tackifier, lubricant, viscosity-depression agent, fluid loss agent and flocculation agent is also comprised in this water-base drilling fluid.
In above-mentioned water-base drilling fluid provided by the invention, for the addition of clay, plugging agent, weighting agent, tackifier, lubricant, viscosity-depression agent, fluid loss agent and flocculation agent, there is no particular limitation, can be respectively the various content that this area is conventional.Preferably, with the weighing scale of the water contained in this water-base drilling fluid, the addition of described clay is 0%-5% (less than 5%), the addition of described plugging agent is 0%-5% (less than 5%), the addition of described weighting agent is 0%-300% (less than 300%), the addition of described tackifier is 0%-1% (less than 1%), the addition of described lubricant is 0%-5% (less than 5%), the addition of described viscosity-depression agent is 0%-5% (less than 5%), the addition of described fluid loss agent is 0%-5% (less than 5%), the addition of described flocculation agent is 0%-5% (less than 5%).
In above-mentioned water-base drilling fluid provided by the invention, for the kind of clay, plugging agent, weighting agent, tackifier, lubricant, viscosity-depression agent, fluid loss agent and flocculation agent, there is no particular limitation, various clays, plugging agent, weighting agent, tackifier, lubricant, viscosity-depression agent, fluid loss agent and flocculation agent that this area is conventional can be respectively, be the material that this area is common, be all commercially available;
Preferably, the clay of employing comprises the combination of one or more in wilkinite, sepiolite and attapulgite;
The plugging agent adopted comprises the combination of one or more in pitch, sulfonated gilsonite, nano silicon and nano barite;
The weighting agent adopted comprises barite and/or powdered iron ore;
The tackifier adopted comprise the combination of one or more in high adhesive aggregation cationic cellulose, high sticky sodium carboxymethyl-cellulose, acrylate and acrylamide copolymer and Natvosol;
The lubricant adopted comprises plastic pellet and/or graphite;
The viscosity-depression agent adopted comprises the combination of one or more in sulfonated methyl tannin, sulphur methyl tannin extract, Sulfonated Copolymer of Styrene and Maleic Anhydride and vinyl acetate-maleic anhydride copolymer;
The fluid loss agent adopted comprises the combination of one or more in sodium carboxymethyl-cellulose, brown coal alkali lye, nitro-humic acid sodium, chromium humic acids and carboxylic propyl group starch;
The flocculation agent adopted comprises the combination of one or more in acrylonitrile copolymer sylvite, acrylamide and sodium acrylate copolymer and complex ionic high molecular weight polymers.
Above-mentioned water-base drilling fluid provided by the invention may be used for the hydration swelling suppressing shale gas shale.
To the preparation method of the water-base drilling fluid inhibitor in the present invention and water-base drilling fluid, there is no particular requirement, as long as proportionally mixed by each raw material.
The oleic acid sorbitol ester adopted in the present invention to the hydration swelling of shale gas shale, disperse inhibited, because it has strong adsorption effect at shale pore throat and shale surface, the performance of shale pore throat and shale surface can be changed, thus to the hydration swelling of shale gas shale and dispersion, there is high inhibition effect, reduce shale expansion rate, and then slump in, bit freezing and strengthening borehole wall stability can be prevented and reduce down-hole complex accident.
Due to containing polyoxyethylene sorbitan stearate in water-base drilling fluid inhibitor of the present invention and water-base drilling fluid, to the hydration swelling of shale gas shale, disperse inhibited, can effectively reduce shale expansion rate, prevent slump in, bit freezing etc., strengthening borehole wall stability also reduces down hole problem.
Embodiment
In order to there be understanding clearly to technical characteristic of the present invention, object and beneficial effect, existing following detailed description is carried out to technical scheme of the present invention, but can not be interpreted as to of the present invention can the restriction of practical range.
If no special instructions, each material used in the present invention is all commercially available, and wherein, oleic acid sorbitol ester (span80) is produced by Chengdu Gracia chemical technology company limited.
Embodiment 1
Present embodiments provide a kind of water-base drilling fluid inhibitor, it is prepared by following steps:
The deionized water of the oleic acid sorbitol ester of 5g and 95g is mixed, obtains water-base drilling fluid inhibitor.This water-base drilling fluid inhibitor can directly use as water-base drilling fluid.
Embodiment 2
Present embodiments provide a kind of water-base drilling fluid inhibitor, it is prepared by following steps:
The deionized water of the oleic acid sorbitol ester of 3g and 97g is mixed, obtains water-base drilling fluid inhibitor.This water-base drilling fluid inhibitor can directly use as water-base drilling fluid.
Embodiment 3
Present embodiments provide a kind of water-base drilling fluid inhibitor, it is prepared by following steps:
The deionized water of the oleic acid sorbitol ester of 7g and 93g is mixed, obtains water-base drilling fluid inhibitor.This water-base drilling fluid inhibitor can directly use as water-base drilling fluid.
Embodiment 4
Present embodiments provide a kind of water-base drilling fluid inhibitor, it is prepared by following steps:
The deionized water of the oleic acid sorbitol ester of 1g and 99g is mixed, obtains water-base drilling fluid inhibitor.This water-base drilling fluid inhibitor can directly use as water-base drilling fluid.
Embodiment 5
Present embodiments provide a kind of water-base drilling fluid inhibitor, it is prepared by following steps:
The deionized water of the oleic acid sorbitol ester of 10g and 90g is mixed, obtains water-base drilling fluid inhibitor.This water-base drilling fluid inhibitor can directly use as water-base drilling fluid.
Embodiment 6
Present embodiments provide a kind of water-base drilling fluid, it is prepared by following steps:
The sulfonated methyl tannin of the wilkinite of the deionized water of the oleic acid sorbitol ester of 5g, 147g, 4.5g, the nano silicon of 2.9g, the graphite of 4.4g and 2.9g is mixed, obtains water-base drilling fluid.
Embodiment 7
Present embodiments provide a kind of water-base drilling fluid, it is prepared by following steps:
The Natvosol of the sepiolite of the deionized water of the oleic acid sorbitol ester of 5g, 45.7g, 1.8g, the pitch of 1.4g, the powdered iron ore of 45.7g and 0.4g is mixed, obtains water-base drilling fluid.
Embodiment 8
Present embodiments provide a kind of water-base drilling fluid, it is prepared by following steps:
The sulfonated gilsonite of the oleic acid sorbitol ester of 5g, the deionized water of 63.2g, the wilkinite of 1.3g and 1.9g is mixed, obtains water-base drilling fluid.
Embodiment 9
The present embodiment carries out shale expansion rate determination experiment to the sodium silicate solution (comparative example 1) of the water-base drilling fluid inhibitor of embodiment 1-8, water-base drilling fluid, 10wt%, 10wt% potassium formate solutions (comparative example 2) and deionized water (comparative example 3) respectively.
Embodiment 1-8, the comparative example 1-3 result to shale expansion rate is as shown in table 1.Wherein, the experimental technique of shale expansion rate determination experiment comprises:
Use linear expansion rate determinator (LSM, purchased from North China Oilfield drilling technology institute) to measure, shale gas shale is from Zhaotong County, Yunnan 108 block;
First shale gas shale pulverizer is broken into powder, cross 100 mesh sieves, be then add a filter paper in the sample pool of 13.50 millimeters at internal diameter before adding slate flour, and the interior height in measure sample pond;
Taking 10 grams of slate flours again in sample pool adds a filter paper, then at the pressure contracting 5min of 6000psi, measures and adds slate flour and sample pool height after compression, then original page sliver height B
t0for add slate flour and sample pool height after compression with add the difference of the sample pool height before slate flour;
Sample pool is fixed in slurry cup, in slurry cup, slowly adds the embodiment 1-8 of 300mL and the sample of comparative example 1-3 respectively, and seal immediately.Shale sheet starts to expand, the expansion height B of shale sheet when recording 24h by recorder (large pointer turns around and represents expansion 1mm, and little pointer turns around and represents expansion 1mm)
t1, measure process temperature and control to be 25 DEG C.Rate of expansion (u
t1, %) obtained by following formula: u
t1=(B
t1-B
t0) × 100/B
t0.
Table 1
By known for the results contrast of embodiment 1-8 in table 1 and comparative example 1-3, compare with water with potassium formate solutions, inorganic silicic acid salts solution such as sodium silicate solution, water-base drilling fluid inhibitor and the water-base drilling fluid containing oleic acid sorbitol ester of the present invention, effectively can suppress the hydration swelling of shale gas shale, reduce shale expansion rate.
Embodiment in table 11 is known with the results contrast of embodiment 4-5, when also containing water in water-base drilling fluid inhibitor, when the weight of oleic acid sorbitol ester is the 3-7% of this water-base drilling fluid inhibitor weight, the hydration swelling of shale gas shale can be suppressed further, reduce shale expansion rate further.
Embodiment in table 11 is known with the results contrast of embodiment 6-8, when in water-base drilling fluid also further containing one or more in clay, plugging agent, weighting agent, tackifier, lubricant, viscosity-depression agent, fluid loss agent and flocculation agent time, the hydration swelling of shale gas shale can be suppressed further, reduce shale expansion rate further.
Above embodiment illustrates, water-base drilling fluid inhibitor of the present invention and water-base drilling fluid, effectively can suppress the hydration swelling of shale gas shale, reduces shale expansion rate, prevents slump in, bit freezing etc., thus strengthens borehole wall stability and reduce down hole problem.
Claims (10)
1. a water-base drilling fluid inhibitor, this water-base drilling fluid inhibitor packages oil scraper acid sorbitol ester.
2. water-base drilling fluid inhibitor according to claim 1, wherein, this water-base drilling fluid inhibitor also comprises water.
3. water-base drilling fluid inhibitor according to claim 1 and 2, wherein, the weight of described oleic acid sorbitol ester is the 1%-10% of this water-base drilling fluid inhibitor gross weight.
4. water-base drilling fluid inhibitor according to claim 3, wherein, the weight of described oleic acid sorbitol ester is the 3%-7% of this water-base drilling fluid inhibitor gross weight.
5. the application of the water-base drilling fluid inhibitor described in any one of claim 1-4, wherein, this water-base drilling fluid inhibitor is for suppressing the hydration swelling of shale gas shale.
6. a water-base drilling fluid, this water-base drilling fluid comprises the water-base drilling fluid inhibitor described in any one of claim 1-4.
7. water-base drilling fluid according to claim 6, wherein, the weight of described oleic acid sorbitol ester is the 1%-10% of this water-base drilling fluid gross weight; Preferably, the weight of described oleic acid sorbitol ester is the 3%-7% of this water-base drilling fluid gross weight.
8. water-base drilling fluid according to claim 6, wherein, also comprises the combination of one or more in clay, plugging agent, weighting agent, tackifier, lubricant, viscosity-depression agent, fluid loss agent and flocculation agent in this water-base drilling fluid.
9. water-base drilling fluid according to claim 8, wherein, with the weighing scale of the water contained in this water-base drilling fluid, the addition of described clay is 0%-5%, and the addition of described plugging agent is 0%-5%, the addition of described weighting agent is 0%-300%, the addition of described tackifier is 0%-1%, and the addition of described lubricant is 0%-5%, and the addition of described viscosity-depression agent is 0%-5%, the addition of described fluid loss agent is 0%-5%, and the addition of described flocculation agent is 0%-5%.
10. the application of the water-base drilling fluid described in any one of claim 6-9, wherein, this water-base drilling fluid is for suppressing the hydration swelling of shale gas shale.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510707115.9A CN105295863B (en) | 2015-10-27 | 2015-10-27 | A kind of water-base drilling fluid inhibitor and water-base drilling fluid and its application |
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| CN201510707115.9A CN105295863B (en) | 2015-10-27 | 2015-10-27 | A kind of water-base drilling fluid inhibitor and water-base drilling fluid and its application |
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| CN105295863B CN105295863B (en) | 2018-08-10 |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738437A (en) * | 1972-02-28 | 1973-06-12 | Shell Oil Co | Drilling process using a shale protecting polymer drilling fluid system |
| EP0702073A1 (en) * | 1994-09-19 | 1996-03-20 | Baker Hughes Incorporated | Shale stabilising drilling fluid employing saccharide derivatives |
| CN1196078A (en) * | 1995-08-17 | 1998-10-14 | 陶氏化学公司 | Drilling fluid |
| CN101864283A (en) * | 2009-12-11 | 2010-10-20 | 中国石油集团钻井工程技术研究院 | Water-based drilling fluid composition containing amine compound |
| CN103848984A (en) * | 2012-11-30 | 2014-06-11 | 天津中油渤星工程科技有限公司 | Shale inhibitor polyether polyol for drilling fluids, and preparation and application thereof |
| CN104927805A (en) * | 2015-06-25 | 2015-09-23 | 山东得顺源石油科技有限公司 | High-density water-based drilling fluid applicable to continental deposit sensitive shale formation |
-
2015
- 2015-10-27 CN CN201510707115.9A patent/CN105295863B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3738437A (en) * | 1972-02-28 | 1973-06-12 | Shell Oil Co | Drilling process using a shale protecting polymer drilling fluid system |
| EP0702073A1 (en) * | 1994-09-19 | 1996-03-20 | Baker Hughes Incorporated | Shale stabilising drilling fluid employing saccharide derivatives |
| CN1196078A (en) * | 1995-08-17 | 1998-10-14 | 陶氏化学公司 | Drilling fluid |
| CN101864283A (en) * | 2009-12-11 | 2010-10-20 | 中国石油集团钻井工程技术研究院 | Water-based drilling fluid composition containing amine compound |
| CN103848984A (en) * | 2012-11-30 | 2014-06-11 | 天津中油渤星工程科技有限公司 | Shale inhibitor polyether polyol for drilling fluids, and preparation and application thereof |
| CN104927805A (en) * | 2015-06-25 | 2015-09-23 | 山东得顺源石油科技有限公司 | High-density water-based drilling fluid applicable to continental deposit sensitive shale formation |
Non-Patent Citations (1)
| Title |
|---|
| 李克向: "《实用完井工程》", 31 December 2002, 石油工业出版社 * |
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