CN104610941A - Drilling fluid for shale hydrocarbon reservoir exploration - Google Patents

Drilling fluid for shale hydrocarbon reservoir exploration Download PDF

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Publication number
CN104610941A
CN104610941A CN201310540113.6A CN201310540113A CN104610941A CN 104610941 A CN104610941 A CN 104610941A CN 201310540113 A CN201310540113 A CN 201310540113A CN 104610941 A CN104610941 A CN 104610941A
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CN
China
Prior art keywords
drilling fluid
shale
agent
reservoir exploration
exploration
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN201310540113.6A
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Chinese (zh)
Inventor
刘振东
乔军
李公让
周守菊
成冠琪
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
China Petrochemical Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
Original Assignee
China Petrochemical Corp
Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp
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Application filed by China Petrochemical Corp, Drilling Technology Research Institute of Sinopec Shengli Petroleum Engineering Corp filed Critical China Petrochemical Corp
Priority to CN201310540113.6A priority Critical patent/CN104610941A/en
Publication of CN104610941A publication Critical patent/CN104610941A/en
Pending legal-status Critical Current

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
    • C09K8/02—Well-drilling compositions
    • C09K8/04—Aqueous well-drilling compositions
    • C09K8/14—Clay-containing compositions
    • C09K8/16—Clay-containing compositions characterised by the inorganic compounds other than clay
    • 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
    • C09K8/20—Natural organic compounds or derivatives thereof, e.g. polysaccharides or lignin derivatives
    • C09K8/206—Derivatives of other natural products, e.g. cellulose, starch, sugars
    • 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
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
    • C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
    • C09K2208/34—Lubricant additives

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  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Organic Chemistry (AREA)
  • Inorganic Chemistry (AREA)
  • Lubricants (AREA)

Abstract

The invention provides a drilling fluid for shale hydrocarbon reservoir exploration. The drilling fluid is based on water, and comprises 4-6wt% of bentonite, 2-5wt% of potassium silicate, 0.2-0.5wt% of a coating inhibitor, 0.2-1.5wt% of a flow pattern regulator, 4-6wt% of a fluid loss additive, 2-3wt% of a shale caving inhibitor, 2-3wt% of a plugging agent, 0.5-1wt% of a filter cake surface modifier, 2-4wt% of a lubricant and 0.4-0.6wt% of a pH value regulator. The drilling fluid has the characteristics of good plugging property, strong inhibition, good lubricity and stable high temperature performances to shale hydrocarbon reservoir stratums, and is suitable for the exploration of shale hydrocarbon reservoirs.

Description

A kind of drilling fluid for shale reservoir exploration and development
Technical field
The present invention relates to a kind of drilling fluid, particularly a kind of drilling fluid for shale reservoir exploration and development.
Background technology
Abroad, the particularly U.S., formed business exploitation scale, the U.S. marches at the forefront of the world in shale gas exploitation, has entered the Rapid development stage of shale gas exploitation in the exploratory development of shale gas.External conventional drilling fluid system mainly oil base drilling fluid, high inhibition amine base drilling fluids, organic or inorganic salt drilling fluid etc.Although different areas there are differences between shale bed, oil base drilling fluid has suitability widely, can be applied in most shale oil gas reservoir development.The many advantages of its tool, such as: excellent shale stability, oilness and contamination resistance, but the environmental problem brought of its base oil and Cost Problems still cause people to find water-base drilling fluid is used as substitute.Water-base drilling fluid is external phase with water, relative to oil base drilling fluid, which increases environmental-protecting performance.
Domestic for having done a large amount of work in the water-base drilling fluid research of shale oil gas reservoir.As, Chen Bei etc. propose a kind of for hard brittle shale use silicate drilling fluid system in " being applicable to the water-base drilling fluid technical study on hard brittle shale stratum ", use PLUS as coating agent, JLX as wetting agent, in sticky CMC and DFD-140 as the main fluid loss agent of system (see " western mineral exploration engineering ", 2009,7).Liu Xiaodong etc. propose a kind of fast drilling fluid being suitable for active mud shale drilling well in " active mud shale rapid drilling drilling liquid technology ", be main treatment agent with polyamine inhibitor and anti-mud drum quick drilling, its rejection and lubricity close to oil base drilling fluid (see " oil drilling technology ", 2011,33(2)).The drilling fluid that patent discloses for active mud shale drilling well of publication number 102250595A, its each component weight ratio is: wilkinite 2 ~ 6%, wrap suppressed dose 0.2 ~ 0.5%, flow pattern regulator 0.2 ~ 1.0%, high-temperature resistant polymer fluid loss agent 0.2 ~ 0.5%, Repone K 4 ~ 7%, polymeric alcohol 1 ~ 3%, polyamine inhibitor 0.5 ~ 1.0%, anti-mud drum quick drilling 0.5 ~ 1.0%, water 45 ~ 85%.Publication number 102226076A patent discloses the anti-collapse Low Damage drilling fluid of a kind of strong rejection capability, comprises the component of following weight percent: silicate: 2% ~ 5%; Small cation inhibitor: 0.5% ~ 1.0%; Hydro-polyacrylamide: 0.3% ~ 0.8%; Carry gluing and cut agent 0.3% ~ 0.5%; Water retaining: 1% ~ 3%; Barite: 0 ~ 6%; Formaldehyde: 0.05 ~ 0.1%; Surplus is water.But the shortcoming of these technology or deficiency are: 1. in shale oil gas reservoir stratum, microfracture is more easily grown, after chance water immerses, be easy to hole collapse occurs.Above-mentioned technology does not launch research work for the Wellbore Stability of shale reservoir exploration and development, and seal-off effect is not strong; 2. the problem of excellent oilness can not do not provided for a long time to launch research for the long horizontal sections drilling well lubrication problem adopted in shale reservoir exploration and development and silicate drilling fluid system, system oilness does not improve.
Summary of the invention
The object of the invention is the deficiency overcoming above-mentioned technology, there is provided one can effective shutoff mud shale stratum, improve drilling fluid inhibition, improve borehole wall stability, lubricity is good, and reduces the drilling fluid for shale reservoir exploration and development of the frictional resistance in horizontal well drilling.
Technical scheme of the present invention is:
A kind of drilling fluid for shale reservoir exploration and development contains according to weight percent on the basis of water: wilkinite 4 ~ 6%, potassium silicate 2 ~ 5%, wrap suppressed dose 0.2 ~ 0.5%, flow pattern regulator 0.2 ~ 1.5%, fluid loss agent 4 ~ 6%, shale anti-sloughing agent 2 ~ 3%, plugging agent 2 ~ 3%, filter cake surface-modifying agent 0.5 ~ 1%, lubricant 2 ~ 4% and caustic soda.
In such scheme, the consumption of described caustic soda meets the pH value > 10 of adjustment drilling fluid.
Suppressed dose of described bag is one or more in polyacrylamide, polyacrylic acid potassium, the strong coating agent IND30 of natural polymer.
Described flow pattern regulator is one or more in Polyanionic Cellulose, hydrolyzed polyacrylonitrile ammonium salt, xanthan gum.
Described fluid loss agent is one or more in humic-acid kind fluid loss agent, low sticky carboxymethyl cellulose, sulfonated phenol formaldehyde resin.
Described shale anti-sloughing agent is one or more in sulfonated gilsonite, rock asphalt powder, cationic emulsified bitumen, colloidal pitch, modifying asphalt.
Described plugging agent is one or both in the silicon-dioxide powdery of 20 ~ 100 nanometers, 1000 order ~ 1500 order calcium carbonate powders.
Described filter cake surface-modifying agent is one or both in hydrophobicity starch, hydrophobic acrylic acid's graft copolymer.
Described lubricant is one or both in zinc dialkyl dithiophosphate, extreme pressure lubricant.
Described hydrophobicity starch median size is 10 ~ 50 microns, contact angle > 110o.
Tool of the present invention has the following advantages:
1. the present invention utilizes nano silicon as shale plugging agent, can go deep among rock microfracture and hole, improves plugging effect, suppresses Shale Hydration, prevents shale collapse.Meanwhile, nano silicon can form one deck hydrophobic membrane on filter cake surface together with hydrophobicity starch, increases the pressuretightness of filter cake, reduces water to the intrusion of shale.
2. in the present invention, hydrophobicity starch, as filter cake surface-modifying agent (polymkeric substance), in the process forming filter cake, can form hydrophobic type film on filter cake surface, improve filter cake compactness.Meanwhile, hydrophobicity starch low price, is suitable for as drilling fluid additive large-scale application.
3. the present invention adopts zinc dialkyl dithiophosphate as lubricant, can form layer protecting film in surface of drill stem, while increasing lubricant, also improves the anticorrosion ability of drilling tool.Meanwhile, zinc dialkyl dithiophosphate acts on the best of performance in silicate drilling fluid system, is adapted in this system as lubricant.
4. the present invention is directed to shale oil gas reservoir stratum and have that seal-off effect is good, strong inhibition capability, oilness are good, have stable high-temperature performance feature, be applicable to the exploratory development of shale oil gas reservoir.
Embodiment
Embodiment one:
For a drilling fluid for shale reservoir exploration and development, the basis of water adds the weight percent of different additive: wilkinite 4%, potassium silicate 2%, polyacrylamide 0.2%, 0.1 % Polyanionic Cellulose and 0.1% xanthan gum, 2% humic-acid kind fluid loss agent and 2% sulfonated phenol formaldehyde resin, sulfonated gilsonite 2%, 20 nano silicon 2%, hydrophobicity starch 0.5%, zinc dialkyl dithiophosphate 2%, caustic soda 0.4%.After having prepared, measuring performance is: density 1.06g/cm 3, viscosity 42s, API filtration 2.8ml, pH value 10.
Embodiment two:
For a drilling fluid for shale reservoir exploration and development, the weight percent that the basis of water adds different additive is: wilkinite 6%, potassium silicate 5%, polyacrylamide 0.5%, 1% Polyanionic Cellulose and 0.5% xanthan gum, 3% humic-acid kind fluid loss agent and 3% sulfonated phenol formaldehyde resin, sulfonated gilsonite 3%, 100 nano silicon 3%, hydrophobicity starch 1%, zinc dialkyl dithiophosphate 4%, caustic soda 0.6%.After having prepared, measuring performance is: density 1.06g/cm 3, viscosity 47s, API filtration 2.0ml, pH value 11.
Embodiment three:
For a drilling fluid for shale reservoir exploration and development, the weight percent that the basis of water adds different additive is: wilkinite 5%, potassium silicate 3%, polyacrylamide 0.3%, 0.5 % Polyanionic Cellulose and 0.2% xanthan gum, 3% humic-acid kind fluid loss agent and 2% sulfonated phenol formaldehyde resin, sulfonated gilsonite 2%, 20 nano silicon 2.5%, hydrophobicity starch 0.5%, zinc dialkyl dithiophosphate 3%, caustic soda 0.5%.After having prepared, measuring performance is: density 1.06g/cm 3, viscosity 44s, API filtration 2.6ml, pH value 10.5.
Embodiment four:
A kind of drilling fluid for shale reservoir exploration and development, the weight percent that the basis of water adds different additive is: wilkinite 4%, potassium silicate 2%, 0.2% polyacrylamide and the strong coating agent IND30 of 0.2% drilling fluid natural polymer, 0.2 % Polyanionic Cellulose and 0.1% xanthan gum, 2% humic-acid kind fluid loss agent and 3% sulfonated phenol formaldehyde resin, 2% sulfonated gilsonite and 1% modifying asphalt, 40 nano silicons 2%, hydrophobicity starch 0.8%, 2% zinc dialkyl dithiophosphate and 2% extreme pressure lubricant (the large petroleum assistant factory of Dongying produces), caustic soda 0.5%.After having prepared, measuring performance is: density 1.06g/cm 3, viscosity 43s, API filtration 2.4ml, pH value 10.5.
Embodiment five:
A kind of drilling fluid for shale reservoir exploration and development, the weight percent that the basis of water adds different additive is: wilkinite 4%, potassium silicate 2%, 0.2% polyacrylamide and the strong coating agent IND30 of 0.2% drilling fluid natural polymer, 0.2 % Polyanionic Cellulose and 0.1% xanthan gum, 2% humic-acid kind fluid loss agent and 3% sulfonated phenol formaldehyde resin, 2% sulfonated gilsonite and 1% modifying asphalt, 1500 order calcium carbonate 2%, hydrophobic acrylic acid's graft copolymer 1%, 2% zinc dialkyl dithiophosphate and 2% extreme pressure lubricant (the large petroleum assistant factory of Dongying produces), caustic soda 0.5%.After having prepared, measuring performance is: density 1.06g/cm 3, viscosity 44s, API filtration 2.5ml, pH value 10.5.

Claims (4)

1., for a drilling fluid for shale reservoir exploration and development, it is characterized in that containing according to weight percent on the basis of water: wilkinite 4 ~ 6%, potassium silicate 2 ~ 5%, wrap suppressed dose 0.2 ~ 0.5%, flow pattern regulator 0.2 ~ 1.5%, fluid loss agent 4 ~ 6%, shale anti-sloughing agent 2 ~ 3%, plugging agent 2 ~ 3%, filter cake surface-modifying agent 0.5 ~ 1%, lubricant 2 ~ 4% and caustic soda.
2. the drilling fluid for shale reservoir exploration and development according to claim 1, is characterized in that: the consumption of described caustic soda meets the pH value > 10 of adjustment drilling fluid.
3. the drilling fluid for shale reservoir exploration and development according to claim 1 and 2, is characterized in that: suppressed dose of described bag is one or more in polyacrylamide, polyacrylic acid potassium, the strong coating agent IND30 of natural polymer; Described flow pattern regulator is one or more in Polyanionic Cellulose, hydrolyzed polyacrylonitrile ammonium salt, xanthan gum; Described fluid loss agent is one or more in humic-acid kind fluid loss agent, low sticky carboxymethyl cellulose, sulfonated phenol formaldehyde resin; Described shale anti-sloughing agent is one or more in sulfonated gilsonite, rock asphalt powder, cationic emulsified bitumen, colloidal pitch, modifying asphalt; Described plugging agent is one or both in the silicon-dioxide powdery of 20 ~ 100 nanometers, 1000 order ~ 1500 order calcium carbonate powders; Described filter cake surface-modifying agent is one or both in hydrophobicity starch, hydrophobic acrylic acid's graft copolymer; Described lubricant is one or both in zinc dialkyl dithiophosphate, extreme pressure lubricant.
4. the drilling fluid for shale reservoir exploration and development according to claim 3, is characterized in that: described hydrophobicity starch median size is 10 ~ 50 microns, contact angle > 110o.
CN201310540113.6A 2013-11-05 2013-11-05 Drilling fluid for shale hydrocarbon reservoir exploration Pending CN104610941A (en)

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Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105018051A (en) * 2015-08-12 2015-11-04 中国海洋石油总公司 Intelligent blocking water-based drilling fluid
CN105385424A (en) * 2015-11-18 2016-03-09 辽宁石油化工大学 Water-based drilling fluid for loosening sandstones
CN105802594A (en) * 2016-04-28 2016-07-27 安阳华森纸业有限责任公司 Preparation method of papermaking white mud drilling fluid
CN106010484A (en) * 2016-06-20 2016-10-12 中国石油化工股份有限公司 Strong-inhibition polyether polyol drilling fluid
CN106634912A (en) * 2016-12-23 2017-05-10 成都理工大学 Nanometer temporary blocking liquid, preparation method of nanometer temporary blocking liquid and unblocking liquid
CN107353883A (en) * 2017-07-11 2017-11-17 中石化石油工程技术服务有限公司 A kind of drilling fluid, solid wall agent and combination application method
CN107384340A (en) * 2017-07-28 2017-11-24 万晓跃 A kind of drilling fluid allocation method for preventing that drilling tool mud drum from hanging tag
CN107474806A (en) * 2017-08-16 2017-12-15 国家电网公司 A kind of drilling fluid and use its anti-well guide hole drilling process of local broken formation inclined shaft
CN107815299A (en) * 2017-11-14 2018-03-20 西南石油大学 A kind of low-density organic silicon nano water-base drilling fluid
CN108384524A (en) * 2018-02-07 2018-08-10 西南石油大学 A kind of drilling fluid and preparation method thereof suitable for shale gas well
CN108611079A (en) * 2016-12-09 2018-10-02 中石化石油工程技术服务有限公司 A kind of ocean Quaternary Strata drilling fluid
CN109777375A (en) * 2019-04-01 2019-05-21 安徽陆海石油助剂科技有限公司 A kind of viscosity depressant for drilling fluid and its production method
CN109971439A (en) * 2017-12-28 2019-07-05 中国石油化工股份有限公司 A kind of drilling fluid graft modified starch anti-sloughing agent and preparation method thereof
CN110016326A (en) * 2018-01-09 2019-07-16 中石化石油工程技术服务有限公司 A kind of low-activity alcohol base drilling fluid and its preparation method
CN110218552A (en) * 2019-04-17 2019-09-10 中国石油天然气股份有限公司 Clean type recyclable drilling fluid and preparation method thereof
CN110746946A (en) * 2018-07-24 2020-02-04 中石化石油工程技术服务有限公司 Water-based drilling fluid based on cellulose nanofibrils
CN115403786A (en) * 2021-05-28 2022-11-29 中石化石油工程技术服务有限公司 Humic acid shale inhibitor and preparation method and application thereof
CN118685159A (en) * 2024-08-22 2024-09-24 新疆贝肯能源工程股份有限公司 Silicate water-based drilling fluid special for coal-bed gas well and application thereof

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Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105018051A (en) * 2015-08-12 2015-11-04 中国海洋石油总公司 Intelligent blocking water-based drilling fluid
CN105385424A (en) * 2015-11-18 2016-03-09 辽宁石油化工大学 Water-based drilling fluid for loosening sandstones
CN105802594A (en) * 2016-04-28 2016-07-27 安阳华森纸业有限责任公司 Preparation method of papermaking white mud drilling fluid
CN106010484A (en) * 2016-06-20 2016-10-12 中国石油化工股份有限公司 Strong-inhibition polyether polyol drilling fluid
CN108611079A (en) * 2016-12-09 2018-10-02 中石化石油工程技术服务有限公司 A kind of ocean Quaternary Strata drilling fluid
CN106634912A (en) * 2016-12-23 2017-05-10 成都理工大学 Nanometer temporary blocking liquid, preparation method of nanometer temporary blocking liquid and unblocking liquid
CN107353883A (en) * 2017-07-11 2017-11-17 中石化石油工程技术服务有限公司 A kind of drilling fluid, solid wall agent and combination application method
CN107384340A (en) * 2017-07-28 2017-11-24 万晓跃 A kind of drilling fluid allocation method for preventing that drilling tool mud drum from hanging tag
CN107474806A (en) * 2017-08-16 2017-12-15 国家电网公司 A kind of drilling fluid and use its anti-well guide hole drilling process of local broken formation inclined shaft
CN107474806B (en) * 2017-08-16 2020-02-21 国家电网公司 Drilling fluid and reverse well guide hole drilling process for inclined well with locally broken stratum by using drilling fluid
CN107815299A (en) * 2017-11-14 2018-03-20 西南石油大学 A kind of low-density organic silicon nano water-base drilling fluid
CN109971439B (en) * 2017-12-28 2021-08-31 中国石油化工股份有限公司 Graft modified starch anti-sloughing agent for drilling fluid and preparation method thereof
CN109971439A (en) * 2017-12-28 2019-07-05 中国石油化工股份有限公司 A kind of drilling fluid graft modified starch anti-sloughing agent and preparation method thereof
CN110016326A (en) * 2018-01-09 2019-07-16 中石化石油工程技术服务有限公司 A kind of low-activity alcohol base drilling fluid and its preparation method
WO2019153240A1 (en) * 2018-02-07 2019-08-15 西南石油大学 Strong plugging drilling fluid suitable for shale gas well and preparation method therefor
CN108384524A (en) * 2018-02-07 2018-08-10 西南石油大学 A kind of drilling fluid and preparation method thereof suitable for shale gas well
CN110746946A (en) * 2018-07-24 2020-02-04 中石化石油工程技术服务有限公司 Water-based drilling fluid based on cellulose nanofibrils
CN109777375A (en) * 2019-04-01 2019-05-21 安徽陆海石油助剂科技有限公司 A kind of viscosity depressant for drilling fluid and its production method
CN110218552A (en) * 2019-04-17 2019-09-10 中国石油天然气股份有限公司 Clean type recyclable drilling fluid and preparation method thereof
CN115403786A (en) * 2021-05-28 2022-11-29 中石化石油工程技术服务有限公司 Humic acid shale inhibitor and preparation method and application thereof
CN115403786B (en) * 2021-05-28 2023-09-19 中石化石油工程技术服务有限公司 Humic acid shale inhibitor and preparation method and application thereof
CN118685159A (en) * 2024-08-22 2024-09-24 新疆贝肯能源工程股份有限公司 Silicate water-based drilling fluid special for coal-bed gas well and application thereof

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