CN103773331A - High-efficiency drilling fluid, and preparation method thereof - Google Patents
High-efficiency drilling fluid, and preparation method thereof Download PDFInfo
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- CN103773331A CN103773331A CN201210408209.2A CN201210408209A CN103773331A CN 103773331 A CN103773331 A CN 103773331A CN 201210408209 A CN201210408209 A CN 201210408209A CN 103773331 A CN103773331 A CN 103773331A
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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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Abstract
The invention discloses a high-efficiency drilling fluid, and preparation method thereof. The high-efficiency drilling fluid comprises following ingredients, by weight, 2.0 to 6.0 parts of bentonite, 3.0 to 7.0 parts of sulfomethal phenolaldehy resin, 2.0 to 6.0 parts of walchowite, 0.03 to 0.4 part of sodium hydroxide, 0.5 to 3.0 parts of sulfonated bitumen, 3.0 to 8.0 parts of KCl, 0.03 to 0.8 part of a polyamine polymer, and 100 parts of water, and preferably comprises 3.0 to 5.0 parts of bentonite, 4.0 to 6.0 parts of sulfomethal phenolaldehy resin, 3.0 to 5.0 parts of walchowite, 0.1 to 0.3 part of sodium hydroxide, 1.0 to 2.0 parts of sulfonated bitumen, 4.0 to 6.0 parts of KCl, and 0.05 to 0.3 part of the polyamine polymer; and the polyamine polymer is a polymer of terminal diamine, a cyclic ether, and an epoxy alkyl halide. The high-efficiency drilling fluid is excellent in system inhibition performance and collapse resistance, and is capable of solving practical problems such as shale hydration dispersion expansion and borehole wall collapsing.
Description
Technical field
The present invention relates to a kind of drilling fluid and preparation method thereof, relate in particular to a kind of strong rejection capability temperature resistant antisalt polymer drilling fluid and its preparation method and application.
Background technology
In drilling engineering, the stratum of meeting 75% be mud shale layer, approximately 90% borehole instability problems occurs in mud shale well section, for high temperature and high salt stratum, the problems referred to above are even more serious.The application of the drilling fluid that contains potassium ion makes the dispersion pulping of mud shale obtain good control, and the submicron particle in drilling fluid and solid load inferior reduce greatly, have increased substantially rate of penetration.But along with the continuous application of technology, also cruelly spill some shortcomings, to suppress ability, anti sloughing effectiveness limited as drilling fluid, also solving aspect the dispersion pulping of high temperature and high salt mud shale stratum and the borehole wall water suction destabilization problems shortcoming to some extent.Therefore it is particularly important that, research and development have the temperature resistant antisalt polymer drilling fluid system of strong rejection capability.
Be used alone as after shale control agent continue potassium ion, developed polymkeric substance/KCl system abroad, but this type of high salt drilling fluid system causes certain injury to environment, must treated could discharge.In addition, above-mentioned wellbore fluid ties up to while running into high temperature and high salt stratum and is short of to some extent, and shale inhibition can encircle well the working concentration that depends on to a great extent inorganic electrolyte KCl, and working concentration is higher, and effect is better causes subsequent disposal more difficult above.The poly-sulphur caving-preventing drilling fluid rejection of the existing domestic KCl generally using for high temperature and high salt stratum, caving-preventing characteristic are limited, have the defects such as piece is serious running into mudstone stratum.
CN10149424A relates to a kind of di-kalium ion-polymer drilling fluid with strong rejection capability, it is characterized in that: di-kalium ion-polymer drilling fluid with strong rejection capability comprises the inorganic potassium salt 7%-9% of the material of following weight per-cent: A. as inorganic inhibitor; B. as the potassium salt 0.5%-0.6% of organic inhibitor; C. carry stick 0.3%-0.5%; D. fluid loss agent 0.3%-0.5%; E. alkalinity control agent 0.3%-0.5%; F. sanitas 0.03%-0.1%; G defoamer 0.1%-0.2%; H. weighting agent 1%-8%; Surplus is water.This drilling fluid system is not suitable for high temperature and high salt stratum, and it is limited to suppress caving-preventing characteristic.
Summary of the invention
For the deficiencies in the prior art, the invention provides a kind of strong rejection capability temperature resistant antisalt polymer drilling fluid and preparation method thereof.This drilling fluid system rejection and caving-preventing characteristic are good, can effectively solve shale hydration and disperse the practical problemss such as expansion and slump in.
A kind of drilling fluid, meter by weight, the wilkinite that contains 2.0-6.0 part, 3.0-7.0 part sulfonated phenol formaldehyde resin, 2.0-6.0 part valchovite, 0.03-0.4 part sodium hydroxide, 0.5-3.0 part sulfonated gilsonite, 3.0-8.0 part KCl, 0.03-0.8 part polyamine polymer, 100 parts of water; Described polyamine polymer is the polymkeric substance of end diamines, cyclic ethers and epoxy haloalkane; Preferably contain the wilkinite of 3.0-5.0 part, 4.0-6.0 part sulfonated phenol formaldehyde resin; 3.0-5.0 part valchovite, 0.1-0.3 part sodium hydroxide, 1.0-2.0 part sulfonated gilsonite, 4.0-6.0 part KCl, 0.05-0.3 part polyamine polymer.
In the present invention, the screen over-size of wilkinite 75 μ m sieves is less than 4%; The polycondensate that sulfonated phenol formaldehyde resin is obtained under proper condition by formaldehyde, phenol and azochlorosulfonate methyl agent, good water solubility, high temperature resistant, anti-salt pollution capacity be strong, it is good to fall filtration effect, its water insoluble matter content≤10.0%, cloud point salinity >=160 g/L, apparent viscosity≤50.0m Pas, high temperature and high pre ssure filtration≤40.0mL; Valchovite is formed by the copolymerization such as nitro humic acid, sulfonated-pheno-formoldehyde resin, its moisture≤20%, water-insoluble≤15%, fresh water slurry high temperature and high pre ssure filtration≤35mL, salt slurries high temperature and high pre ssure filtration≤40mL, fresh water slurry apparent viscosity≤20mPas, salt slurries apparent viscosity≤40mPas; Sulfonated gilsonite is the sulfonated products of pitch, its high temperature and high pre ssure filtration≤30.0mL, relative expansion reduced rate≤55.0%.
The kinematic viscosity of the polyamine polymer described in the present invention is 300 mm
2/ s-2000 mm
2/ s, cationic degree 0.75 mmol/g-3.6 mmol/g; Be preferably kinematic viscosity 500 mm
2/ s-1300 mm
2/ s, cationic degree 1.0 mmol/g-3.0 mmol/g.
A preparation method for drilling fluid, first prepares polyamine polymer, makes to hold diamines, cyclic ethers and epoxy haloalkane to carry out copolyreaction and generates polyamine polymer; Then make drilling fluid than preparation containing the aqueous solution of wilkinite, sulfonated phenol formaldehyde resin, valchovite, sodium hydroxide, sulfonated gilsonite, KCl, polyamine polymer by metering.
End diamines described in the inventive method, cyclic ethers and the copolyreaction of epoxy haloalkane are as follows: first under stirring and 50-120 ℃ of condition, in end diamines, drip cyclic ethers, the mol ratio of cyclic ethers and end diamines is 0.5-4:1, drips and finishes rear reaction 1-4h; Then temperature is risen to 80-150 ℃, under agitation condition, drip epoxy haloalkane, the mol ratio of epoxy haloalkane and end diamines is 0.1-1:1, dropping finishes rear reaction 1-4h, add terminator, the mol ratio of terminator and end diamines is 0.5-2:1, continues reaction 1-4h, obtains cationic polyamine base polymer sample.
The inventive method middle-end diamines is quadrol, propylene diamine, butanediamine, pentamethylene diamine, hexanediamine etc.Cyclic ethers is propylene oxide, butylene oxide ring etc.Epoxy haloalkane is epoxy chloropropane, epoxy bromopropane, epoxy chlorobutane etc.Terminator is hydrochloric acid, sulfuric acid, nitric acid, Glacial acetic acid, citric acid, formic acid, acetic acid etc.
Field application test result shows: compared with the existing drilling fluid of generally applying, drilling fluid system of the present invention can be for high temperature and high salt stratum, effectively suppress aquation, dispersion and the expansion of mud shale, the serious problems that suppress the drilling process such as pulping and borehole wall water suction unstability of soil inferior, have the good effect that prevents slump in.In addition, drilling fluid system lifeless matter toxicity of the present invention, meets environmental requirement.
Embodiment
Illustrate effect and the effect of the inventive method below in conjunction with embodiment, but following examples do not form the restriction to the inventive method.
In the present invention, wilkinite is purchased from Shandong Shang Bujinxin wilkinite factory, and the screen over-size of 75 μ m sieves is less than 4%; Sulfonated phenol formaldehyde resin is purchased from Henan Golden Horse petroleum science and technology limited liability company, its water insoluble matter content≤8.0%, cloud point salinity >=160 g/L, apparent viscosity≤50.0m Pas, high temperature and high pre ssure filtration≤35.0mL; Valchovite is purchased from Pingxiang City Bo Xin Industrial Co., Ltd., its moisture≤18%, water-insoluble≤12%, fresh water slurry high temperature and high pre ssure filtration≤30mL, salt slurries high temperature and high pre ssure filtration≤35mL, fresh water slurry apparent viscosity≤20mPas, salt slurries apparent viscosity≤40mPas; Sulfonated gilsonite derives from Puyang Lu Tong petrochemical complex company limited, is black lotion product, its high temperature and high pre ssure filtration≤24.0mL, relative expansion reduced rate≤55.0%.
Embodiment 1
Polyamine polymer is the product after diamines, propylene oxide and epichlorohydrin reaction, preparation method is to dripping propylene oxide in diamines under stirring and 60 ℃ of conditions, reaction 4h, then temperature is risen to 90 ℃, under agitation condition, drip epoxy chloropropane, reaction 4h adds hydrochloric acid, continues reaction 4h, obtains cationic polyamine base polymer sample.Controlling diamines, propylene oxide, epoxy chloropropane and hydrochloric acid molar ratio is 1:0.8:0.7:2.0.The kinematic viscosity of the polyamine polymer making is 1203.3 mm
2/ s, cationic degree is 2.986mmol/g.In drilling fluid, the concrete massfraction of each component is in table 1.
Table 1 drilling fluid composition
| ? | Component | Massfraction |
| 1 | Wilkinite | 4.0 |
| 2 | Sulfonated phenol formaldehyde resin | 5.0 |
| 3 | Valchovite | 4.0 |
| 4 | Sodium hydroxide | 0.2 |
| 5 | Sulfonated gilsonite | 1.5 |
| 6 | KCl | 6 |
| 7 | Polyamine polymer | 0.1 |
| 8 | Water | 100 |
Embodiment 2
Polyamine polymer is the reacted product of pentamethylene diamine, propylene oxide and epoxy bromopropane, preparation method for dripping propylene oxide under stirring and 80 ℃ of conditions in pentamethylene diamine, reaction 4h, then temperature is risen to 98 ℃, under agitation condition, drip epoxy bromopropane, reaction 3h adds Glacial acetic acid, continues reaction 2h, obtains cationic polyamine base polymer sample.Controlling pentamethylene diamine, propylene oxide, epoxy bromopropane and Glacial acetic acid molar ratio is 1:2:0.5:1.0, and its kinematic viscosity is 857.3 mm
2/ s, cationic degree is 1.568mmol/g.The concrete massfraction of each component is in table 2.
Table 2 drilling fluid composition
| ? | Component | Massfraction |
| 1 | Wilkinite | 5.0 |
| 2 | Sulfonated phenol formaldehyde resin | 4.0 |
| 3 | Valchovite | 3.0 |
| 4 | Sodium hydroxide | 0.3 |
| 5 | Sulfonated gilsonite | 2.0 |
| 6 | KCl | 5.0 |
| 7 | Polyamine polymer | 0.2 |
| 8 | Water | 100 |
Embodiment 3
Polyamine polymer is butanediamine, butylene oxide ring and the reacted product of epoxy chlorobutane, preparation method for dripping butylene oxide ring under stirring and 100 ℃ of conditions in butanediamine, reaction 1h, then temperature is risen to 140 ℃, under agitation condition, drip epoxy chlorobutane, reaction 1h adds formic acid, continues reaction 1h, obtains cationic polyamine base polymer sample.Controlling butanediamine, butylene oxide ring, epoxy chlorobutane and formic acid molar ratio is 1:4:0.4:0.8, and its kinematic viscosity is 456.4mm
2/ s, cationic degree is 0.906mmol/g.The concrete massfraction of each component is in table 3.
Table 3 drilling fluid composition
| ? | Component | Massfraction |
| 1 | Wilkinite | 3.0 |
| 2 | Sulfonated phenol formaldehyde resin | 6.0 |
| 3 | Valchovite | 5.0 |
| 4 | Sodium hydroxide | 0.1 |
| 5 | Sulfonated gilsonite | 1.0 |
| 6 | KCl | 4.0 |
| 7 | Polyamine polymer | 0.3 |
| 8 | Water | 100 |
In Zhongyuan Oil Field, unconventional development level well has carried out test in place to embodiment 1-3.In drilling process, the viscosity of drilling fluid, shear force change little, performance kept stable, and the drilling cuttings returning out from vibratory screening apparatus is complete, the hydration swelling that visible drilling fluid system can effectively suppress drilling cuttings disperses, and is conducive to solid control equipment and removes drilling cuttings, thereby control the content of harmful solid phase in drilling fluid, keep the stable of property of drilling fluid, guarantee fast and safely to creep into.In 60h, the variation of the rheological property of drilling fluid has not quite also shown that the drilling fluid system inhibition ability time length is long simultaneously.Completion logging shows, hole diameter amplification degree obviously dwindles (being reduced to 5.88% by 11.49%).In the whole drilling process of drilling fluid, do not have down hole problem to occur, make a trip unimpeded, finishing drilling smoothly.Drifting process is without blocked portion phenomenon, and electrical measurement is success once, and running casing and well cementing operation are smooth.Illustrate that wellbore fluid ties up to mudstone stratum and can effectively suppress mud stone dispersion, play the effect of stabilizing borehole.
Comparative example
Wellbore fluid is the poly-sulphur caving-preventing drilling fluid of KCl, composing system is that part sodium hydroxide+0.5,4 parts of wilkinite+0.2 part FA-367+6 part KCl+4 part SPNH+5 part SMP+100 divides water, wherein FA-367 purchases from Zhengzhou Yu Hua auxiliary agent company limited, apparent viscosity >=30.0, cation ionization degree >=10%; SPNH purchases from Pingxiang City Bo Xin Industrial Co., Ltd., is micro-reddish black powder or particle, soluble in water, and the aqueous solution is alkalescence; SMP purchases from Henan Golden Horse petroleum science and technology limited liability company, is free flowing powder, its apparent viscosity≤50.0mPas, high temperature and high pre ssure filtration≤35.0mL.
The sticky shearization of comparative example drilling fluid in the time of the unconventional development level well of Zhongyuan Oil Field literary composition 88-FP1 rig-site utilization is larger, and yield value increases to 13Pa from 5.3Pa, and egress increases to 19Pa from 4.5Pa, and plastic viscosity increases to 46mPas from 39mPas.About 80h of this well section circulation of drilling fluid time, visible drilling fluid cannot effectively suppress the aquation of drilling cuttings and disperse, harmful solid phase constantly increases, thereby cause drilling fluid in shorter drilling depth and in the short period, rheological property changes greatly, can not meet and when safety is crept into, maintain the stable requirement of drilling fluid.
Claims (10)
1. a drilling fluid, it is characterized in that: meter by weight, the wilkinite that contains 2.0-6.0 part, 3.0-7.0 part sulfonated phenol formaldehyde resin, 2.0-6.0 part valchovite, 0.03-0.4 part sodium hydroxide, 0.5-3.0 part sulfonated gilsonite, 3.0-8.0 part KCl, 0.03-0.8 part polyamine polymer, 100 parts of water; Described polyamine polymer is the polymkeric substance of end diamines, cyclic ethers and epoxy haloalkane.
2. drilling fluid according to claim 1, is characterized in that: the wilkinite that contains 3.0-5.0 part, 4.0-6.0 part sulfonated phenol formaldehyde resin; 3.0-5.0 part valchovite, 0.1-0.3 part sodium hydroxide, 1.0-2.0 part sulfonated gilsonite, 4.0-6.0 part KCl, 0.05-0.3 part polyamine polymer.
3. drilling fluid according to claim 1, is characterized in that: the kinematic viscosity of described polyamine polymer is 300 mm
2/ s-2000 mm
2/ s, cationic degree 0.75 mmol/g-3.6 mmol/g.
4. drilling fluid according to claim 3, is characterized in that: kinematic viscosity 500 mm
2/ s-1300 mm
2/ s, cationic degree 1.0 mmol/g-3.0 mmol/g.
5. the preparation method of drilling fluid described in claim 1, is characterized in that: first prepare polyamine polymer, make to hold diamines, cyclic ethers and epoxy haloalkane to carry out copolyreaction and generate polyamine polymer; Then make drilling fluid than preparation containing the aqueous solution of wilkinite, Xylo-Mucine, amphoteric sulfonated copolymer, sodium hydroxide, polyamine polymer by metering.
6. method according to claim 5, it is characterized in that: described end diamines, cyclic ethers and the copolyreaction of epoxy haloalkane are as follows: first under stirring and 50-120 ℃ of condition, in end diamines, drip cyclic ethers, the mol ratio of cyclic ethers and end diamines is 0.5-4:1, drips and finishes rear reaction 1-4h; Then temperature is risen to 80-150 ℃, under agitation condition, drip epoxy haloalkane, the mol ratio of epoxy haloalkane and end diamines is 0.1-1:1, dropping finishes rear reaction 1-4h, add terminator, the mol ratio of terminator and end diamines is 0.5-2:1, continues reaction 1-4h, obtains cationic polyamine base polymer sample.
7. method according to claim 5, is characterized in that: end diamines is quadrol, propylene diamine, butanediamine, pentamethylene diamine or hexanediamine.
8. method according to claim 5, is characterized in that: cyclic ethers is propylene oxide or butylene oxide ring.
9. method according to claim 5, is characterized in that: epoxy haloalkane is epoxy chloropropane, epoxy bromopropane or epoxy chlorobutane.
10. method according to claim 5, is characterized in that: terminator is hydrochloric acid, sulfuric acid, nitric acid, Glacial acetic acid, citric acid, formic acid or acetic acid.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295874A (en) * | 2014-06-19 | 2016-02-03 | 成都棕通石油配件有限公司 | Mud for large borehole drilling |
| CN105713581A (en) * | 2014-12-04 | 2016-06-29 | 中国石油化工股份有限公司 | Solid-phase-free strongly-inhibitive drilling fluid with strong plugging effect and preparation method thereof |
| CN106608958A (en) * | 2015-10-27 | 2017-05-03 | 新疆真帝石油科技有限公司 | Making method of carboxymethyl sulfonated phenolic resin and application of carboxymethyl sulfonated phenolic resin |
| CN108690578A (en) * | 2017-04-10 | 2018-10-23 | 中国石油化工股份有限公司 | A kind of water-base drilling fluid and preparation method thereof |
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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 |
| CN102002349A (en) * | 2010-11-12 | 2011-04-06 | 中国海洋石油总公司 | Seawater-based polyamine well completion fluid and preparation method thereof |
| CN102391842A (en) * | 2011-09-28 | 2012-03-28 | 中国石油化工集团公司 | Polyamine drilling fluid |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105295874A (en) * | 2014-06-19 | 2016-02-03 | 成都棕通石油配件有限公司 | Mud for large borehole drilling |
| CN105713581A (en) * | 2014-12-04 | 2016-06-29 | 中国石油化工股份有限公司 | Solid-phase-free strongly-inhibitive drilling fluid with strong plugging effect and preparation method thereof |
| CN106608958A (en) * | 2015-10-27 | 2017-05-03 | 新疆真帝石油科技有限公司 | Making method of carboxymethyl sulfonated phenolic resin and application of carboxymethyl sulfonated phenolic resin |
| CN106608958B (en) * | 2015-10-27 | 2019-02-22 | 新疆真帝石油科技有限公司 | A kind of manufacturing method of carboxymethyl sulfonated phenol formaldehyde resin and the application of carboxymethyl sulfonated phenol formaldehyde resin |
| CN108690578A (en) * | 2017-04-10 | 2018-10-23 | 中国石油化工股份有限公司 | A kind of water-base drilling fluid and preparation method thereof |
| CN108690578B (en) * | 2017-04-10 | 2020-11-10 | 中国石油化工股份有限公司 | Water-based drilling fluid and preparation method thereof |
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| CN103773331B (en) | 2016-08-17 |
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