CN104592960A - Amphoteric potassium-based polyalcohol water-based drilling fluid for drilling shale - Google Patents

Amphoteric potassium-based polyalcohol water-based drilling fluid for drilling shale Download PDF

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Publication number
CN104592960A
CN104592960A CN201410850895.8A CN201410850895A CN104592960A CN 104592960 A CN104592960 A CN 104592960A CN 201410850895 A CN201410850895 A CN 201410850895A CN 104592960 A CN104592960 A CN 104592960A
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China
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drilling fluid
gram
add
shale
water
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CN201410850895.8A
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CN104592960B (en
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白杨
王平全
王波
杜敬国
时海涛
余冰洋
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Southwest Petroleum University
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Southwest Petroleum University
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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
    • 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
    • C09K2208/10—Nanoparticle-containing well treatment fluids
    • 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)
  • Lubricants (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Earth Drilling (AREA)

Abstract

The invention relates to an amphoteric potassium-based polyalcohol water-based drilling fluid for drilling shale, which overcomes a problem that a well wall is unstable when a water-based drilling fluid drills into a shale ground layer, restrains the shale ground layer from being hydrated and collapsed, and effectively seals shale micro-nano apertures. According to the technical scheme adopted by the invention, the drilling liquid is prepared from the following raw material components by mass (unit: g): 900-1000 g of tap water, 40-60 g of bentonite, 1-3 g of Na2CO3, 2-4 g of an amphoteric ionic polymer coating agent FA367, 1-2 g of an amphoteric ionic polymer viscosity reducer XY-27, 300-400 g of potassium formate, 50-60 g of highlight calcium carbonate C-L501, 0.5-1 g of calcium oxide, 30-40 g of a lubricating agent JHJC-3, 20-30 g of paraffin emulsion JHNP, 10-20 g of polyalcohol JHGC; and 40% alkaline liquor is prepared by NaOH, the pH of the system is regulated to be 9, and the system is uniformly stirred to prepare the amphoteric potassium-based polyalcohol water-based drilling fluid. The water-based drilling fluid is low in cost, good in inhibition performance and used for drilling a shale long horizontal section with microfracture development.

Description

A kind of both sexes potassium base polymeric alcohol water-base drilling fluid creeping into shale
Technical field
The present invention relates to the both sexes potassium base polymeric alcohol water-base drilling fluid creeping into shale in a kind of shale gas production drilling process, be particularly suitable for creeping into of the long lateral segment of shale of microfracture growth.
Background technology
Shale gas well generally adopts oil base drilling fluid both at home and abroad at present, because oil base drilling fluid can improve the capillary pressure of hygroscopicity shale, preventing drilling fluid to the intrusion of shale, by using oil base drilling fluid and synthetic base drilling fluid, effectively can solve the problem of hole instability.In reply shale gas horizontal well wellbore stability, oil base drilling fluid system is adopted to be external most effective measures at present.Even if but adopt oil base drilling fluid, the shale formation that fracture or bedding are grown, also must strengthen shutoff, enter to reduce liquid the pressure transmission (block fluid passage) caused on stratum.Oil base drilling fluid, at lubrication, anti-sticking and fall the advantage having water-base drilling fluid incomparable in resistance effect, drags pressure problem when can avoid slide drilling, and this is also the basic reason place of its widespread use.But damage because oil base working fluid makes the wettability modification of low permeability pay and gas-bearing formation, reservoir permeability is greatly reduced, thus reduce oil well output.Indoor core experiment shows, when core by hydrophilic change into oleophylic time, its recovery ratio drops to 17% by 51%.Therefore, oil base drilling fluid should be adopted cautiously to bore at low permeability pay and open payzone, when especially having emulsifying agent, tensio-active agent in oil base drilling fluid.
The relative merits water-base drilling fluid advantage comparing oil base drilling fluid has: 1. environmental protection; 2. Sweet natural gas leaching easily finds; 3. temperature convection sex change impact is less; 4. cost is relatively low; 5. meet leakage easily to process, shortcoming has: 1. borehole wall stability is poor; 2. thermostability is relatively poor, is easy to high temperature gel; 3. resistance to crocking difference (solid phase and CO 2, H 2s gas contamination), safeguard that work for the treatment of amount is large; 4. lubricate and sticking control scarce capacity.Therefore, developing a kind of novel water-based drilling fluid that can be applicable to shale formation and substitute oil base drilling fluid and can solve the gordian technique that the problem such as wellbore stability, reservoir pollution is then current shale gas drilling well, is also the difficult point place of domestic and international shale drilling well.
Summary of the invention
The object of the invention is: borehole well instability problem when using water-base drilling fluid to creep into shale formation to overcome, suppressing shale formation aquation to be caved in, effective shutoff shale micro-nano hole seam, for this reason specially provide a kind of both sexes potassium base polymeric alcohol water-base drilling fluid creeping into shale.
In order to achieve the above object, the present invention is by the following technical solutions: a kind of both sexes potassium base polymeric alcohol water-base drilling fluid of drilling well shale, it is characterized in that preparing the raw materials used each component of this drilling fluid and content is, wherein mass unit is gram: tap water 900-1000, drilling fluid wilkinite 40-60; Na 2cO 31-3; Amphoteric ion polymer coating agent FA3672-4; Amphoteric ion polymer viscosity-depression agent XY-271-2; Potassium formiate 300-400; High light calcium carbonate C-L50150-60; Calcium oxide 0.5-1; Drilling fluid polymeric alcohol lubricant JHJC-330-40; Drilling fluid is with receiving a micron paraffin wax emulsions JHNP 20-30; Drilling fluid solid polymerization alcohol JHGC 10-20; Be mixed with the alkali lye of 40% with NaOH, adjustment system pH is 9, stirs 1 hour.
A kind of preparation method creeping into the both sexes potassium base polymeric alcohol water-base drilling fluid of shale of the present invention is:
Water temperature is risen to 65 DEG C by the tap water first measuring 900-1000 gram, adds the drilling fluid wilkinite of 40-60 gram under low speed 600r/min electric stirring, stirs 10min and adds 1-3 gram of Na 2cO 3stir 30min again, under normal temperature and pressure after prehydration 24h, under low speed 500r/min electric stirring, add 2-4 gram of amphoteric ion polymer coating agent FA367 stir 5min, add 1-2 gram of amphoteric ion polymer viscosity-depression agent XY-27 and stir 5min, add 300-400 gram of potassium formiate and stir 5min, add 50-60 gram high smooth calcium carbonate C-L501 and stir 15min, add 0.5-1 calcium oxide and stir 15min, add 30-40 gram of drilling fluid polymeric alcohol lubricant JHJC-3 and stir 5min; Add 20-30 gram of drilling fluid with receiving a micron paraffin wax emulsions JHNP stirring 15min; Add 10-20 gram of drilling fluid solid polymerization alcohol JHGC and stir 5min at 9000r/min, be finally mixed with NaOH the alkali lye that mass percentage concentration is 40%, adjustment system pH is 9, stirs 1 hour, obtained these both sexes potassium base polymeric alcohol water-base drilling fluid.
Above-mentioned preparation method amphoteric ion polymer used coating agent FA367, amphoteric ion polymer viscosity-depression agent XY-27, drilling fluid wilkinite, sodium carbonate, sodium hydroxide, calcium oxide, drilling fluid polymeric alcohol lubricant JHJC-3, potassium formiate, drilling fluid are sell goods on market with receiving a micron paraffin wax emulsions JHNP, drilling fluid solid polymerization alcohol JHGC, high light calcium carbonate C-L501, strictly by industry standard or enterprise's mark inspection when purchasing, eligible could use.Specifically in table 1.
These both sexes of table 1 potassium base polymeric alcohol water-base drilling fluid basic raw material particular sheet
The shale both sexes potassium base polymeric alcohol water-base drilling fluid that creeps into provided by the invention has following beneficial effect compared with current used shale drilling fluid system: the 1. process of these both sexes potassium base polymeric alcohol water-base drilling fluid landwaste, environmental protection easier than oil base drilling fluid; 2. cost is low; 3. meet leakage more easily to process.
Embodiment:
Below in conjunction with specific examples, the present invention is further illustrated
Example 1: a kind of compound method of creeping into the both sexes potassium base polymeric alcohol water-base drilling fluid of shale.
Water temperature is risen to 65 DEG C by the tap water first measuring 1000 grams, adds the drilling fluid wilkinite of 40 grams under low speed 600r/min electric stirring, stirs 10min and adds 3 grams of Na 2cO 3stir 30min again, under normal temperature and pressure after prehydration 24h, under low speed 500r/min electric stirring, add 2 grams of amphoteric ion polymer coating agent FA367 stir 5min, add 2 grams of amphoteric ion polymer viscosity-depression agent XY-27 and stir 5min, add 400 grams of potassium formiates and stir 5min, add 50 grams high smooth calcium carbonate C-L501 and stir 15min, add 1 gram of calcium oxide and stir 15min, add 30 grams of drilling fluid polymeric alcohol lubricant JHJC-3 and stir 5min; Add 30 grams of drilling fluids with receiving a micron paraffin wax emulsions JHNP stirring 15min; Add 20 grams of drilling fluid solid polymerization alcohol JHGC and stir 5min at 9000r/min, be mixed with the alkali lye of 40% with NaOH, adjustment system pH is 9, stirs 1 hour, obtained these both sexes potassium base polymeric alcohol water-base drilling fluid.
Example 2: adopt XGRL-2 type roller heating stove to carry out rolling determination of recovery rates to drilling fluid system of the present invention.
These both sexes of table 2 potassium base polymeric alcohol water-base drilling fluid rolling rate of recovery experimental result
Drilling fluid composition Experiment condition Reclaim quality (g) The rate of recovery (%)
Clear water+50g red beds soil 100℃/16h 5.64 11.28
Low density water base drilling fluid system+50g red beds soil 100℃/16h 46.23 92.46
Note: red beds soil is Sichuan red beds soil landwaste
These both sexes of table 3 potassium base polymeric alcohol water-base drilling fluid linear expansion experimental result
From the rolling rate of recovery and the linear expansion rate experiment of table 2, these both sexes of table 3 potassium base polymeric alcohol water-base drilling fluid, the rolling rate of recovery reaches more than 92%, 16h linear expansion rate only has 24.36%, illustrates that this water base drilling fluid system has good inhibition and can effectively suppress clay aquation.

Claims (2)

1. creep into a both sexes potassium base polymeric alcohol water-base drilling fluid for shale, it is characterized in that: prepare the raw materials used component of this drilling fluid and content is, its mass unit is gram:
Sodium hydroxide is made into the alkali lye that mass percentage concentration is 40%, and regulation system pH value is 9.
2. a compound method for drilling fluid as claimed in claim 1, is characterized in that: water temperature is risen to 65 DEG C by the tap water first measuring 900-1000 gram, adds the drilling fluid wilkinite of 40-60 gram under low speed 600r/min electric stirring, stirs 10min and adds 1-3 gram of Na 2cO 3stir 30min again, under normal temperature and pressure after prehydration 24h, under low speed 500r/min electric stirring, add 2-4 gram of amphoteric ion polymer coating agent FA367 stir 5min, add 1-2 gram of amphoteric ion polymer viscosity-depression agent XY-27 and stir 5min, add 300-400 gram of potassium formiate and stir 5min, add 50-60 gram high smooth calcium carbonate C-L501 and stir 15min, add 0.5-1 gram of calcium oxide and stir 15min, add 30-40 gram of drilling fluid polymeric alcohol lubricant JHJC-3 and stir 5min; Add 20-30 gram of drilling fluid with receiving a micron paraffin wax emulsions JHNP stirring 15min; Add 10-20 gram of drilling fluid solid polymerization alcohol JHGC again and stir 5min at 9000r/min, be finally mixed with NaOH the alkali lye that mass percentage concentration is 40%, adjustment system pH is 9, stirs 1 hour, obtained these both sexes potassium base polymeric alcohol water-base drilling fluid.
CN201410850895.8A 2014-12-31 2014-12-31 A kind of both sexes potassium base polymeric alcohol water-base drilling fluid for creeping into shale Active CN104592960B (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105295865A (en) * 2015-09-15 2016-02-03 西南石油大学 Soilless potassium formate water-based drilling fluid for drilling shale
CN105694829A (en) * 2016-03-14 2016-06-22 西南石油大学 Low-friction drilling fluid for drilling of shale
CN105733528A (en) * 2016-03-11 2016-07-06 西南石油大学 Low-density fluorescent drilling fluid for drilling shale
CN106520087A (en) * 2016-11-04 2017-03-22 西南石油大学 Strong inhibitive drilling fluid for drilling shale
CN106634900A (en) * 2016-10-10 2017-05-10 西南石油大学 Shale strong-inhibition nano plugging water-based drilling fluid
CN106634887A (en) * 2016-12-30 2017-05-10 胜利油田龙玺石油工程服务有限责任公司 Production method for anti-sloughing lubricating solid polyalcohol used for drilling fluid
CN107541195A (en) * 2017-08-25 2018-01-05 克拉玛依市创拓有限责任公司 Filming water-base drilling fluid and preparation method thereof
CN108300433A (en) * 2018-03-01 2018-07-20 陕西延长石油(集团)有限责任公司研究院 A kind of drilling shale horizontal well nano combined sealing agent and preparation method thereof
CN116023913A (en) * 2021-10-25 2023-04-28 中国石油化工股份有限公司 Drilling fluid and preparation method and application thereof

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CN101429424A (en) * 2008-12-15 2009-05-13 中国石油集团川庆钻探工程有限公司工程技术研究院 Di-kalium ion-polymer drilling fluid with strong rejection capability
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CN101747876A (en) * 2008-12-16 2010-06-23 西部钻探克拉玛依钻井工艺研究院 Potassium carbonate polyamine drilling fluid
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105295865A (en) * 2015-09-15 2016-02-03 西南石油大学 Soilless potassium formate water-based drilling fluid for drilling shale
CN105733528B (en) * 2016-03-11 2018-06-22 西南石油大学 A kind of drilling shale low-density fluorescence drilling fluid
CN105733528A (en) * 2016-03-11 2016-07-06 西南石油大学 Low-density fluorescent drilling fluid for drilling shale
CN105694829A (en) * 2016-03-14 2016-06-22 西南石油大学 Low-friction drilling fluid for drilling of shale
CN105694829B (en) * 2016-03-14 2018-10-26 西南石油大学 A kind of low frictional resistance drilling fluid of drilling shale
CN106634900A (en) * 2016-10-10 2017-05-10 西南石油大学 Shale strong-inhibition nano plugging water-based drilling fluid
CN106634900B (en) * 2016-10-10 2019-03-26 西南石油大学 A kind of shale strong rejection capability nanometer closure water-base drilling fluid
CN106520087A (en) * 2016-11-04 2017-03-22 西南石油大学 Strong inhibitive drilling fluid for drilling shale
CN106520087B (en) * 2016-11-04 2019-03-26 西南石油大学 A kind of drilling shale Strong Inhibitive Drilling Fluids
CN106634887A (en) * 2016-12-30 2017-05-10 胜利油田龙玺石油工程服务有限责任公司 Production method for anti-sloughing lubricating solid polyalcohol used for drilling fluid
CN107541195A (en) * 2017-08-25 2018-01-05 克拉玛依市创拓有限责任公司 Filming water-base drilling fluid and preparation method thereof
CN108300433A (en) * 2018-03-01 2018-07-20 陕西延长石油(集团)有限责任公司研究院 A kind of drilling shale horizontal well nano combined sealing agent and preparation method thereof
CN116023913A (en) * 2021-10-25 2023-04-28 中国石油化工股份有限公司 Drilling fluid and preparation method and application thereof

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