CN105086960B - A kind of drilling fluid and preparation method and application - Google Patents
A kind of drilling fluid and preparation method and application Download PDFInfo
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- CN105086960B CN105086960B CN201410197765.9A CN201410197765A CN105086960B CN 105086960 B CN105086960 B CN 105086960B CN 201410197765 A CN201410197765 A CN 201410197765A CN 105086960 B CN105086960 B CN 105086960B
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- water
- drilling fluid
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- starch
- base drilling
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- 238000005553 drilling Methods 0.000 title claims abstract description 88
- 239000012530 fluid Substances 0.000 title claims abstract description 77
- 238000002360 preparation method Methods 0.000 title claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 54
- 229920000881 Modified starch Polymers 0.000 claims abstract description 31
- 239000004368 Modified starch Substances 0.000 claims abstract description 31
- 235000019426 modified starch Nutrition 0.000 claims abstract description 31
- 241001044369 Amphion Species 0.000 claims abstract description 30
- UXVMQQNJUSDDNG-UHFFFAOYSA-L Calcium chloride Chemical compound [Cl-].[Cl-].[Ca+2] UXVMQQNJUSDDNG-UHFFFAOYSA-L 0.000 claims abstract description 19
- 229920000642 polymer Polymers 0.000 claims abstract description 13
- 229920002472 Starch Polymers 0.000 claims description 31
- 239000008107 starch Substances 0.000 claims description 31
- 235000019698 starch Nutrition 0.000 claims description 31
- 238000006243 chemical reaction Methods 0.000 claims description 20
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- JKNCOURZONDCGV-UHFFFAOYSA-N 2-(dimethylamino)ethyl 2-methylprop-2-enoate Chemical compound CN(C)CCOC(=O)C(C)=C JKNCOURZONDCGV-UHFFFAOYSA-N 0.000 claims description 11
- 239000003795 chemical substances by application Substances 0.000 claims description 11
- 239000002904 solvent Substances 0.000 claims description 11
- 238000000034 method Methods 0.000 claims description 10
- 239000000178 monomer Substances 0.000 claims description 10
- -1 3-N-morpholinopropanesulfonic acid Ester Chemical class 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- OKKJLVBELUTLKV-UHFFFAOYSA-N Methanol Chemical compound OC OKKJLVBELUTLKV-UHFFFAOYSA-N 0.000 claims description 6
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical group [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims description 6
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 6
- 239000008367 deionised water Substances 0.000 claims description 6
- 229910021641 deionized water Inorganic materials 0.000 claims description 6
- 239000003999 initiator Substances 0.000 claims description 6
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 claims description 5
- 239000011575 calcium Substances 0.000 claims description 5
- 229910052791 calcium Inorganic materials 0.000 claims description 5
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 claims description 5
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 claims description 4
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 4
- 229920002261 Corn starch Polymers 0.000 claims description 4
- 244000017020 Ipomoea batatas Species 0.000 claims description 4
- 235000002678 Ipomoea batatas Nutrition 0.000 claims description 4
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 239000000654 additive Substances 0.000 claims description 4
- 230000000996 additive effect Effects 0.000 claims description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 claims description 4
- 239000008120 corn starch Substances 0.000 claims description 4
- 229940099112 cornstarch Drugs 0.000 claims description 4
- 238000000605 extraction Methods 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 239000002244 precipitate Substances 0.000 claims description 4
- 239000012266 salt solution Substances 0.000 claims description 4
- 239000007787 solid Substances 0.000 claims description 4
- 229920002310 Welan gum Polymers 0.000 claims description 3
- 239000001103 potassium chloride Substances 0.000 claims description 3
- 235000011164 potassium chloride Nutrition 0.000 claims description 3
- 239000011780 sodium chloride Substances 0.000 claims description 3
- 239000002689 soil Substances 0.000 claims description 3
- 229920001285 xanthan gum Polymers 0.000 claims description 3
- 241000196324 Embryophyta Species 0.000 claims description 2
- 229920002907 Guar gum Polymers 0.000 claims description 2
- 235000019738 Limestone Nutrition 0.000 claims description 2
- 239000004113 Sepiolite Substances 0.000 claims description 2
- 240000001085 Trapa natans Species 0.000 claims description 2
- 235000021307 Triticum Nutrition 0.000 claims description 2
- 244000098338 Triticum aestivum Species 0.000 claims description 2
- 235000019270 ammonium chloride Nutrition 0.000 claims description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 claims description 2
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 2
- 229910052921 ammonium sulfate Inorganic materials 0.000 claims description 2
- 235000011130 ammonium sulphate Nutrition 0.000 claims description 2
- 229960000892 attapulgite Drugs 0.000 claims description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical group [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 2
- 239000010428 baryte Substances 0.000 claims description 2
- 229910052601 baryte Inorganic materials 0.000 claims description 2
- ONCZQWJXONKSMM-UHFFFAOYSA-N dialuminum;disodium;oxygen(2-);silicon(4+);hydrate Chemical compound O.[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[O-2].[Na+].[Na+].[Al+3].[Al+3].[Si+4].[Si+4].[Si+4].[Si+4] ONCZQWJXONKSMM-UHFFFAOYSA-N 0.000 claims description 2
- 239000000665 guar gum Substances 0.000 claims description 2
- 235000010417 guar gum Nutrition 0.000 claims description 2
- 229960002154 guar gum Drugs 0.000 claims description 2
- LIKBJVNGSGBSGK-UHFFFAOYSA-N iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Fe+3].[Fe+3] LIKBJVNGSGBSGK-UHFFFAOYSA-N 0.000 claims description 2
- 239000006028 limestone Substances 0.000 claims description 2
- ZLNQQNXFFQJAID-UHFFFAOYSA-L magnesium carbonate Chemical compound [Mg+2].[O-]C([O-])=O ZLNQQNXFFQJAID-UHFFFAOYSA-L 0.000 claims description 2
- 239000001095 magnesium carbonate Substances 0.000 claims description 2
- 229910000021 magnesium carbonate Inorganic materials 0.000 claims description 2
- 229910052625 palygorskite Inorganic materials 0.000 claims description 2
- 229920001451 polypropylene glycol Polymers 0.000 claims description 2
- 239000004323 potassium nitrate Substances 0.000 claims description 2
- 235000010333 potassium nitrate Nutrition 0.000 claims description 2
- 229920001592 potato starch Polymers 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 235000009165 saligot Nutrition 0.000 claims description 2
- 235000019355 sepiolite Nutrition 0.000 claims description 2
- 229910052624 sepiolite Inorganic materials 0.000 claims description 2
- 229940080314 sodium bentonite Drugs 0.000 claims description 2
- 229910000280 sodium bentonite Inorganic materials 0.000 claims description 2
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 claims 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims 2
- 239000011591 potassium Substances 0.000 claims 2
- 229910052700 potassium Inorganic materials 0.000 claims 2
- CHQMHPLRPQMAMX-UHFFFAOYSA-L sodium persulfate Chemical compound [Na+].[Na+].[O-]S(=O)(=O)OOS([O-])(=O)=O CHQMHPLRPQMAMX-UHFFFAOYSA-L 0.000 claims 2
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims 1
- DPBJAVGHACCNRL-UHFFFAOYSA-N 2-(dimethylamino)ethyl prop-2-enoate Chemical compound CN(C)CCOC(=O)C=C DPBJAVGHACCNRL-UHFFFAOYSA-N 0.000 claims 1
- UUYQSLQNSVVXCC-UHFFFAOYSA-N CN.C(C=C)(=O)OCCN(C)C Chemical compound CN.C(C=C)(=O)OCCN(C)C UUYQSLQNSVVXCC-UHFFFAOYSA-N 0.000 claims 1
- 240000003183 Manihot esculenta Species 0.000 claims 1
- 235000016735 Manihot esculenta subsp esculenta Nutrition 0.000 claims 1
- 150000001408 amides Chemical class 0.000 claims 1
- 150000002148 esters Chemical class 0.000 claims 1
- 125000004494 ethyl ester group Chemical group 0.000 claims 1
- 230000005713 exacerbation Effects 0.000 claims 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims 1
- 150000004968 peroxymonosulfuric acids Chemical class 0.000 claims 1
- 235000007686 potassium Nutrition 0.000 claims 1
- QQONPFPTGQHPMA-UHFFFAOYSA-N propylene Natural products CC=C QQONPFPTGQHPMA-UHFFFAOYSA-N 0.000 claims 1
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims 1
- 230000008961 swelling Effects 0.000 claims 1
- 229920001897 terpolymer Polymers 0.000 claims 1
- 239000001110 calcium chloride Substances 0.000 abstract description 11
- 229910001628 calcium chloride Inorganic materials 0.000 abstract description 11
- 150000002500 ions Chemical class 0.000 abstract description 5
- 239000007788 liquid Substances 0.000 abstract description 5
- 238000007789 sealing Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 6
- 238000012360 testing method Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000005764 inhibitory process Effects 0.000 description 5
- 238000012423 maintenance Methods 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- 238000011084 recovery Methods 0.000 description 5
- 150000003839 salts Chemical group 0.000 description 5
- 235000012216 bentonite Nutrition 0.000 description 4
- 239000012043 crude product Substances 0.000 description 4
- 238000000151 deposition Methods 0.000 description 4
- 230000008021 deposition Effects 0.000 description 4
- 239000007789 gas Substances 0.000 description 4
- 230000032683 aging Effects 0.000 description 3
- 239000000440 bentonite Substances 0.000 description 3
- 229940092782 bentonite Drugs 0.000 description 3
- 229910000278 bentonite Inorganic materials 0.000 description 3
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 3
- 229920001577 copolymer Polymers 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- USHAGKDGDHPEEY-UHFFFAOYSA-L potassium persulfate Chemical compound [K+].[K+].[O-]S(=O)(=O)OOS([O-])(=O)=O USHAGKDGDHPEEY-UHFFFAOYSA-L 0.000 description 3
- 235000019394 potassium persulphate Nutrition 0.000 description 3
- 238000010189 synthetic method Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-O Ammonium Chemical compound [NH4+] QGZKDVFQNNGYKY-UHFFFAOYSA-O 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 2
- 238000000944 Soxhlet extraction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000007796 conventional method Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 239000003112 inhibitor Substances 0.000 description 2
- 239000000314 lubricant Substances 0.000 description 2
- 229920000768 polyamine Polymers 0.000 description 2
- 238000006116 polymerization reaction Methods 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- KXGFMDJXCMQABM-UHFFFAOYSA-N 2-methoxy-6-methylphenol Chemical class [CH]OC1=CC=CC([CH])=C1O KXGFMDJXCMQABM-UHFFFAOYSA-N 0.000 description 1
- DUUSWXBAUSDNRJ-UHFFFAOYSA-N CC(=C)C([O])=O Chemical compound CC(=C)C([O])=O DUUSWXBAUSDNRJ-UHFFFAOYSA-N 0.000 description 1
- WQZGKKKJIJFFOK-GASJEMHNSA-N Glucose Natural products OC[C@H]1OC(O)[C@H](O)[C@@H](O)[C@@H]1O WQZGKKKJIJFFOK-GASJEMHNSA-N 0.000 description 1
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 244000151018 Maranta arundinacea Species 0.000 description 1
- 235000010804 Maranta arundinacea Nutrition 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 1
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- 235000012419 Thalia geniculata Nutrition 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 150000001450 anions Chemical class 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 238000012662 bulk polymerization Methods 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 125000002091 cationic group Chemical group 0.000 description 1
- 238000005660 chlorination reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 239000010779 crude oil Substances 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 150000002191 fatty alcohols Chemical class 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000013505 freshwater Substances 0.000 description 1
- 239000008103 glucose Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 229930182470 glycoside Natural products 0.000 description 1
- 239000003077 lignite Substances 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 229910021645 metal ion Inorganic materials 0.000 description 1
- 125000000250 methylamino group Chemical group [H]N(*)C([H])([H])[H] 0.000 description 1
- 239000011259 mixed solution Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000003129 oil well Substances 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 231100000614 poison Toxicity 0.000 description 1
- 230000007096 poisonous effect Effects 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000867 polyelectrolyte Polymers 0.000 description 1
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 description 1
- 229910052939 potassium sulfate Inorganic materials 0.000 description 1
- 235000011151 potassium sulphates Nutrition 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000011435 rock Substances 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 239000002002 slurry Substances 0.000 description 1
- 239000011734 sodium Substances 0.000 description 1
- 229910052708 sodium Inorganic materials 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 239000004575 stone Substances 0.000 description 1
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 description 1
- 230000008719 thickening Effects 0.000 description 1
- 239000003643 water by type Substances 0.000 description 1
Landscapes
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The present invention provides a kind of drilling fluid and preparation method and application, the drilling fluid includes water, amphion modified starch, anhydrous calcium chloride, native phase, flow pattern regulator, wherein, on the basis of the weight of water, amphoteric ion polymer consumption is 0.5 5wt% of water consumption, anhydrous calcium chloride consumption is 20 70wt% of water consumption, and native phase consumption is 0 6wt% of water consumption, and flow pattern regulator consumption is 0.1 0.4wt% of water consumption.The present invention also provides a kind of water-based drilling liquid and preparation method thereof and application.Drilling fluid of the present invention makes drilling fluid have excellent rheological property, vena caval filter performance, rejection, sealing characteristics, greasy property by the synergy of calcium chloride and amphoteric ion polymer.
Description
Technical field
The present invention relates to the drilling fluid used in Process of Oil Well Drilling, the more particularly to brill containing amphoteric ion copolymer
Well liquid.
Background technology
For shale gas stratum cranny development, water sensitivity is strong, easily occur leakage, collapse, undergauge the features such as, in drilling process
The middle most important thing for solving the problems such as wellbore stability, drop resistance antifriction just as drilling fluid selection.Current country's shale gas horizontal well
Mainly oil base drilling fluid is used, but the high cost of oil base drilling fluid, high pollution are its natural flaws in drilling process.Water-base drilling fluid
If can suppressing, block, lubricate, taking and have breakthrough in terms of rock sand removal, it is very huge in the application prospect of shale gas horizontal well
Greatly.At present, the water-base drilling fluid with larger application potential has glucose glycoside drilling fluid, polyamine class drilling fluid, polymerization
Alcohol drilling fluid, drilling workers and silicate drilling fluid etc..These drilling fluid systems also need to continue on the basis of existing
In-depth research, develops supporting inorganic agent, the need for meeting shale gas development of resources, and can make drilling fluid system towards green
The direction of environmental protection is developed.
Chinese patent CN103146364A describes a kind of high inhibition water-base drilling fluid, and it includes water, polyamine inhibitor, bag
It is suppressed agent, hydrate inhibitor, tackifier, fluid loss additive and fluid lubricant.Drilling fluid is with can effectively suppressing deep water superficial part
Layer borehole well instability, its inhibition is suitable with oil base drilling fluid.Shale rolling rate of recovery is not higher than 95%.Drilling fluid can solve deep water
In drilling well in the generation problem of hydrate, the drillng operation for being applicable to the 3000m depth of waters.Chinese patent CN102250595A is public
The drilling fluid for strong retraction activated clay stratum has been opened, it is fine by bentonite, partially hydrolyzed polyacrylamide (PHPA), low adhesive aggregation anion
Tie up element, co-polymer of sulfonate tackifier, potassium chloride, polymeric alcohol, amine based polymer, fatty alcohol ether phosphate, water composition, the drilling well
Liquid rejection and greasy property are close to oil base drilling fluid.Chinese patent CN103013470A discloses a kind of for ultra-deep side
Drilling well mud stone high inhibition drilling fluid system, by bentonite slurry, alkaline conditioner, shale control agent, metal ion polymer, lignite
Resin, sulfonated phenol formaldehyde resin, cationic emulsified bitumen, lubricant, emulsifying agent, crude oil and calcium carbonate superfine powder, the drilling fluid
System is to mud shale strong inhibition capability, and shale recovery ratio is up to 90.33%, and high temperature resistance is up to 150 DEG C；The coefficient of friction resistance is distinguished before and after aging
Less than 0.1.
The content of the invention
In view of the shortcomings of the prior art, the present invention provides a kind of drilling fluid and preparation method and application.Drilling well of the present invention
The synergy that liquid passes through calcium chloride and amphoteric ion polymer so that drilling fluid has excellent rheological property, vena caval filter
Performance, rejection, sealing characteristics, greasy property etc..
The present invention provides a kind of water-base drilling fluid, and the drilling fluid includes water, amphion modified starch, anhydrous chlorination
Calcium, native phase, flow pattern regulator, wherein, on the basis of the weight of water, amphion modified starch consumption is the 0.5- of water consumption
5wt%, preferably 1.5-3wt%；Anhydrous calcium chloride consumption is the 20-70wt%, preferably 30-60wt% of water consumption；Native phase consumption is
The 0-6wt% of water consumption, preferably 1.5-4wt%, flow pattern regulator consumption are the 0.1-0.4wt%, preferably 0.2- of water consumption
0.3wt%, the amphion modified starch is N, N- dimethyl-allyls propane sulfonic acid salt/acrylamide/starch ternary polymerization
Thing.
In water-base drilling fluid of the present invention, the soil is mutually in sodium bentonite, calcium-base bentonite, attapulgite, sepiolite
One or more.
In water-base drilling fluid of the present invention, the flow pattern regulator is one kind or several in xanthans, guar gum, welan gum
Kind.
In water-base drilling fluid of the present invention, can also include heavy weight additive, the heavy weight additive be barite, lime stone, bloodstone,
One or more in wustite, iron oxide, magnesium carbonate, can determine addition according to the requirement of drilling fluid density.
In water-base drilling fluid of the present invention, shale control agent can also be included, the shale control agent consumption is water consumption
0.1-2wt%, preferably 1-2wt%.The shale control agent can be with potassium chloride, potassium sulfate, potassium nitrate, ammonium chloride, ammonium sulfate, nitre
One or more in sour ammonium, polyethylene glycol, polypropylene glycol, polyethylene glycol propylene glycol block polymer.
Amphion modified starch of the present invention is N, N- dimethyl-allyls propane sulfonic acid salt/acrylamide/starch three
Membered copolymer, it is as follows that preparation method includes step：
（1）It is 2 to weigh mass ratio respectively first:1~9:In 1 dimethylaminoethyl methacrylate and 1,3-N-morpholinopropanesulfonic acid
Ester, and PS is added into dimethylaminoethyl methacrylate, then reacted at a temperature of 10~60 DEG C
0.5~4h, eventually passes filter, extracting, dries obtained methylacryoyloxyethyl-N, N- dimethyl propylene sulfonate；
（2）According to（7~2）：（4~1）：（2~6）Mass ratio weigh step respectively（1）In obtained methacryl
Oxygen ethyl-N, N- dimethyl propylene sulfonate, acrylamide, starch；
（3）By step（2）The starch weighed adds water in stirring 20~50min at 60~80 DEG C, obtains gelatinized starch, then
It is passed through N2Initiator is added after 15~60min of reaction；
（4）By step（2）The acrylamide and methylacryoyloxyethyl-N, N- dimethyl propylene sulfonate weighed is used
After solvent dissolving, it is added to through step（3）In starch after processing, 4~6h is reacted at 60~80 DEG C, glue is obtained after reaction
Solid, is cleaned with acetone and obtains white precipitate；
（5）By step（4）Obtained white precipitate is dried after 16~24h at 50~80 DEG C and crushed, and obtains amphion
Modified starch.
In amphion modified starch preparation method of the present invention, step（1）Middle dimethylaminoethyl methacrylate and 1,
The mass ratio of 3-N-morpholinopropanesulfonic acid lactone is 2.5:1~8:1.
In amphion modified starch preparation method of the present invention, step（1）Middle PS is added drop-wise to methyl-prop
In olefin(e) acid dimethylaminoethyl or directly disposably it is added in dimethylaminoethyl methacrylate, preferably the side of being directly added into
Formula.Use the dimethylaminoethyl methacrylate weighed during directly disposable add and PS mass ratio for
5.2:1~7.8:1.Dimethylaminoethyl methacrylate and PS mass ratio is 2.5 when using dropwise addition mode:
1~5:1, PS can be heated and melted before dropwise addition.
In amphion modified starch preparation method of the present invention, step（1）Reaction condition be in 20~55 DEG C of temperature
1~3h of lower reaction.
In amphion modified starch preparation method of the present invention, step（1）Middle extraction solvent selects methanol or ethanol, preferably
Ethanol, extraction times are 1~3h.The drying is that 10~20h is dried under the conditions of 30~50 DEG C.
In amphion modified starch preparation method of the present invention, step（2）Described in starch be green starch, para arrowroot
Powder, sweet potato starch, starch from sweet potato, farina, wheat kind of starch, water caltrop starch, Rhizoma Nelumbinis starch, one kind in cornstarch or several
Plant, preferably cornstarch or farina.
In amphion modified starch preparation method of the present invention, step（3）The middle initiator used is potassium peroxydisulfate, over cure
It is any in sour sodium, ammonium persulfate；The initiator amount accounts for the 0.5~1.5% of monomer and starch gross mass.
In amphion modified starch preparation method of the present invention, step（4）Described in solvent be deionized water or salt solution,
It is that the NaCl concentration added in 15%~30%, the salt solution is 0~1.0mol/ to add monomer and starch total mass concentration after solvent
L。
Water-base drilling fluid of the present invention is prepared via a method which, is first according to ratio and is weighed water, amphion respectively
Modified starch, anhydrous calcium chloride, native phase, flow pattern regulator, then add native phase into water, abundant aquation or it is scattered after, add
Flow pattern regulator, high-speed stirred makes it add anhydrous calcium chloride after fully dissolving, and adds temperature after anhydrous calcium chloride and rises, waits to drop
Amphion modified starch is added after to room temperature, 24~48h of maintenance is stood after high-speed stirred is scattered, drilling fluid is obtained.
, can be with now with the current in drilling process the present invention relates to a kind of application of water-base drilling fluid in drilling process.
Compared with prior art, drilling fluid of the present invention has the following advantages that：
（1）CaCl in water-base drilling fluid of the present invention2Played the role of a nucleus with amphion modified starch, its synergy is played
Multifunctional effect, including rheological property, vena caval filter, rejection, greasy property etc..Wherein amphion modified starch is viscous
Degree is with CaCl2The increase of content and gradually increase, embody obvious thickening and carry and cuts effect；Due to high content CaCl2Presence, screen
The internal salt structure in amphion modified starch structure is covered so that contained sulfonic group and ammonium fully expose, has further made
For native phase, the filtrate reducing ability of system is enhanced；High content CaCl2Itself it is respectively provided with amphion modified starch stronger
Rejection, their collaboration make it that the inhibition of system is stronger；The greasy property of system has met or exceeded oil base brill
The level of well liquid；The overall excellent properties of the above are that current water-base drilling fluid is short of.
（2）PS is added to excessive metering system by amphion modified starch synthetic method of the present invention
In sour dimethylaminoethyl, excessive dimethylaminoethyl methacrylate acts not only as raw material and participates in reaction, and
Solvent can be played a part of, it is to avoid the use of poisonous acetone is solvent in conventional method, is a kind of green synthetic method.
（3）Amphion modified starch synthetic method of the present invention is by controlling PS and methacrylic acid two
The quality of methylamino when feeding mode, solves PS and dimethylaminoethyl conventionally
When directly being reacted（Generally equimolar is than reaction）, it is impossible to the problem of obtaining monomer DMAPS.
（4）Amphion modified starch prepared by the inventive method belongs to interior salt form amphoteric ion polymer, with tradition two
Property polymer except that its in fresh water intermolecular electrostatic attraction act on, show as strand and curl.And it is high in high salt
In calcium solution, due to the presence of small molecule salt, intermolecular association is shielded, is converted into intermolecular electrostatic attraction quiet
Electric repulsion so that strand is more unfolded.Obvious " anti-polyelectrolyte " effect that it is shown resists the salt resistance of polymer
Calcium performance gradually strengthens with the increase of salt amount.Can anti-NaCl saturations, anti-CaCl2Up to more than 20%.This is current modified starch
The anti-calcium and anti-salt performance that amphoteric ion polymer does not possess.
Embodiment
The effect and effect of the inventive method are illustrated with reference to embodiment, but following examples are not constituted to this
The limitation of scheme of the invention.
Embodiment 1
Methylacryoyloxyethyl-N, N- dimethyl propylene sulfonate is prepared first（DMAPS）
Weigh 630gDM to be put into reactor, be then placed in thermostat water bath, heat and start stirring.Weigh again
122gPS, is added directly into DM, and reaction temperature is 35 DEG C, and DMAPS crude product is obtained after stirring reaction 1.5h.By DMAPS
Crude product is transferred in large stretch of filter paper and wrapped, and is positioned in Soxhlet extraction device, the use of ethanol is solvent extraction 1h, and extracting is finished
Filter paper bag is placed in drying box afterwards, is dried at 40 DEG C, finally gives pure DMAPS monomers, yield is 92.8%,（Yield
For the ratio for actually obtaining the quality of product Yu stoichiometrically reacting obtained theoretical product quality）.
Comparative example 1（Directly react）
According to stoichiometric proportion DM：PS is 1:1 reaction.Weigh 157gDM to pour into reactor, be then placed in water bath with thermostatic control
In pot, heat and start stirring.122gPS is weighed again, is added directly into DM, and reaction temperature is 20 DEG C, after stirring reaction 0.5h
Mass polymerization product is obtained, without DMAPS monomers, yield is 0.During according to stoichiometric reaction, produce substantial amounts of in reaction
Heat can not disperse in time, and temperature moment steeply rises, and cause raw material DM and product DMAPS all to polymerize.
Comparative example 2（Conventional method, using acetone as solvent reaction）
Weigh 170gDM to pour into reactor, be then placed in thermostat water bath, heat and start stirring.Weigh again
122gPS is dissolved in 1170g acetone, and mixed solution is added directly into DM, and reaction temperature is 60 DEG C, obtains after stirring reaction 4h
DMAPS crude product.DMAPS crude products are transferred in large stretch of filter paper and wrapped, are positioned in Soxhlet extraction device, ethanol is used
For solvent extraction 2h, filter paper bag is placed in drying box by extracting after finishing, and is dried at 35 DEG C, is finally given pure DMAPS
Monomer, yield is 82.4%.
Embodiment 2
Weigh 100g starch and add deionized water in 60 DEG C of gelatinization 30min, be passed through N2 5g potassium peroxydisulfates are added after 30min,
Weigh after 100g AM, 170g DMAPS add deionized water dissolving and be transferred in gelatinized starch reactor respectively, monomer gross mass
Concentration is 25%, obtains colloidal solid after reaction 5h, is cleaned with acetone and obtain white depositions.White depositions are done at 70 DEG C
Final products are crushed to obtain after dry 12h.
Embodiment 3
Weigh 100g starch and add deionized water in 60 DEG C of 30 min of gelatinization, be passed through N2 3g potassium peroxydisulfates are added after 30min,
Weigh after 80g AM, 150g DMAPS add deionized water dissolving and be transferred in gelatinized starch reactor respectively, monomer gross mass
Concentration is 20%, obtains colloidal solid after reaction 6h, is cleaned with acetone and obtain white depositions.White depositions are done at 70 DEG C
Final products are crushed to obtain after dry 12h.
Embodiment 4
350ml running water is weighed first, adds and 1.2g xanthans is added after 6g attapulgites, high-speed stirred 10min, is continued
High-speed stirred 10min, stands maintenance 2h；Add the anhydrous CaCl of 140g2, stand after high-speed stirred 10min and be cooled to room temperature；Add
Polymer prepared by 7g embodiments 2, high-speed stirred 10min stands maintenance 24h, obtains drilling fluid system.
Embodiment 5
350ml running water is weighed first, adds and 1.3g welan gums are added after 9.5g calcium-base bentonites, high-speed stirred 10min,
Continue high-speed stirred 10min, stand maintenance 2h；Add the anhydrous CaCl of 210g2, stand after high-speed stirred 10min and be cooled to room temperature；
Polymer prepared by 10g embodiments 3 is added, high-speed stirred 10min stands maintenance 36h, obtains drilling fluid system.
Embodiment 6
Same as Example 4, difference is that drilling fluid is free of calcium chloride.
Embodiment 7
Same as Example 4, difference is the 2wt% that calcium chloride consumption is water consumption in drilling fluid.
Embodiment 8
Same as Example 4, difference is the 5wt% that calcium chloride consumption is water consumption in drilling fluid.
Embodiment 9
Same as Example 4, difference is the 10wt% that calcium chloride consumption is water consumption in drilling fluid.
Embodiment 10
Same as Example 4, difference is the 25wt% that calcium chloride consumption is water consumption in drilling fluid.
Testing performance of drilling fluid：
Testing performance of drilling fluid includes rheological property, vena caval filter, rejection, the test of greasy property.Test result
It is shown in Table 1~table 4.Wherein, rheological property is measured using the fast rotation viscometer of ZNN-D6 types six, passes through obtained φ 600, φ
300th, φ 6, the data of φ 3 calculate and obtain each rheological parameter；Filter loss is committed a breach of etiquette using the multi-joint middle press filtration of SD-6A types filters with HTHP
Commit a breach of etiquette and be measured, testing time 30min；Rejection is that shale rolls recovery test, and method is：By the shale of certain mass
Add in drilling fluid, aging 16h is rolled at 120 DEG C, take out and reclaimed with 0.42mm standard screens, calculate primary recovery.Reclaim
Shale afterwards is positioned in clear water the rolling aging 2h at 120 DEG C, takes out and is reclaimed with 0.42mm standard screens, calculates secondary recovery
Rate；Greasy property is measured using extreme boundary lubrication instrument EP-B and sticking coefficient analyzer NF-2.
The rheological property of table 1
The vena caval filter of table 2
The rejection of table 3
The greasy property of table 4
Claims (20)
1. a kind of water-base drilling fluid, it is characterised in that the drilling fluid include water, amphion modified starch, anhydrous calcium chloride,
Native phase, flow pattern regulator, wherein, on the basis of the weight of water, amphion modified starch consumption is the 0.5-5wt% of water consumption,
Anhydrous calcium chloride consumption is the 20-70wt% of water consumption, and native phase consumption is the 0-6wt% of water consumption, and flow pattern regulator consumption is water
The 0.1-0.4wt% of consumption, the amphion modified starch is methylacryoyloxyethyl-N, N- dimethyl propylene sulfonic acid
Salt/acrylamide/starch terpolymer.
2. according to the water-base drilling fluid described in claim 1, it is characterised in that：On the basis of the weight of water, amphion is modified
Starch consumption is the 1.5-3wt% of water consumption；Anhydrous calcium chloride consumption is the 30-60wt% of water consumption；Native phase consumption is water consumption
1.5-4wt%, flow pattern regulator consumption be water consumption 0.2-0.3wt%.
3. according to the water-base drilling fluid described in claim 1, it is characterised in that：The soil is mutually sodium bentonite, calcium base swelling
One or more in soil, attapulgite, sepiolite.
4. according to the water-base drilling fluid described in claim 1, it is characterised in that：The flow pattern regulator be xanthans, guar gum,
One or more in welan gum.
5. according to the water-base drilling fluid described in claim 1, it is characterised in that：The amphion modified starch by walking as follows
It is rapid to prepare：（1）It is 2 to weigh mass ratio respectively first:1~9:In 1 dimethylaminoethyl methacrylate and 1,3-N-morpholinopropanesulfonic acid
Ester, and PS is added into dimethylaminoethyl methacrylate, then reacted at a temperature of 10~60 DEG C
0.5~4h, eventually passes filter, extracting, dries obtained methylacryoyloxyethyl-N, N- dimethyl propylene sulfonate；（2）Press
According to（7~2）：（4~1）：（2~6）Mass ratio weigh step respectively（1）In obtained methylacryoyloxyethyl-N, N-
Dimethyl propylene sulfonate, acrylamide, starch；（3）By step（2）The starch weighed add water at 60~80 DEG C stirring 20~
50min, obtains gelatinized starch, then passes to N2Initiator is added after 15~60min of reaction；（4）By step（2）The propylene weighed
After acid amides and methylacryoyloxyethyl-N, N- dimethyl propylene sulfonate solvent dissolve, it is added to through step（3）Processing
In starch afterwards, 4~6h is reacted at 60~80 DEG C, colloidal solid is obtained after reaction, is cleaned with acetone and obtain white precipitate；
（5）By step（4）Obtained white precipitate is dried after 16~24h at 50~80 DEG C and crushed, and obtains amphion modified starch.
6. according to the water-base drilling fluid described in claim 5, it is characterised in that：Step（1）Middle dimethylaminoethyl second
The mass ratio of ester and PS is 2.5:1~8:1.
7. according to the water-base drilling fluid described in claim 5, it is characterised in that：Step（1）Middle PS is added drop-wise to
In dimethylaminoethyl methacrylate or directly disposably it is added in dimethylaminoethyl methacrylate.
8. according to the water-base drilling fluid described in claim 7, it is characterised in that：The methyl weighed during using directly disposable addition
Dimethylaminoethyl acrylate and PS mass ratio are 5.2:1~7.8:1.
9. according to the water-base drilling fluid described in claim 7, it is characterised in that：Using dimethylaminoethyl acrylate methyl ammonia during the mode of dropwise addition
Base ethyl ester and PS mass ratio are 2.5:1~5:1.
10. according to the water-base drilling fluid described in claim 5, it is characterised in that：Step（1）Described in extraction solvent select methanol
Or ethanol, extraction times are 1~3h.
11. according to the water-base drilling fluid described in claim 5, it is characterised in that：Step（2）Described in starch be green starch,
One in tapioca, sweet potato starch, starch from sweet potato, farina, wheat kind of starch, water caltrop starch, Rhizoma Nelumbinis starch, cornstarch
Plant or several, preferably cornstarch or farina.
12. according to the water-base drilling fluid described in claim 5, it is characterised in that：Step（3）Described in initiator be persulfuric acid
Any in potassium, sodium peroxydisulfate, ammonium persulfate, the initiator amount accounts for the 0.5~1.5% of monomer and starch gross mass.
13. according to the water-base drilling fluid described in claim 5, it is characterised in that：Step（4）Monomer and starch after middle addition solvent
Total concentration is 15%~30%.
14. as according to the water-base drilling fluid described in claim 5, it is characterised in that：Step（4）Described in solvent be deionized water
Or salt solution, the NaCl concentration added in the salt solution is 0~1.0mol/L.
15. according to the water-base drilling fluid described in claim 1, it is characterised in that：The drilling fluid includes shale control agent, described
Shale control agent consumption is the 0.1-2wt% of water consumption.
16. according to the water-base drilling fluid described in claim 15, it is characterised in that：The shale control agent consumption is water consumption
1-2wt%。
17. according to the water-base drilling fluid described in claim 15, it is characterised in that：The shale control agent is potassium chloride, sulfuric acid
In potassium, potassium nitrate, ammonium chloride, ammonium sulfate, ammonium nitrate, polyethylene glycol, polypropylene glycol, polyethylene glycol propylene glycol block polymer
It is one or more of.
18. according to the water-base drilling fluid described in claim 1, it is characterised in that：The drilling fluid includes heavy weight additive, the exacerbation
Agent is barite, lime stone, bloodstone, wustite, iron oxide, and the one or more in magnesium carbonate can be according to drilling fluid density
Requirement determine addition.
19. application of the water-base drilling fluid described in any claim in drilling process in claim 1 to 18.
20. the preparation method of water-base drilling fluid described in any claim in claim 1 to 18, including following content, first
Water, amphion modified starch, anhydrous calcium chloride, native phase, flow pattern regulator are proportionally weighed respectively, are then added into water
Native phase, abundant aquation or it is scattered after, add flow pattern regulator, high-speed stirred makes it add anhydrous calcium chloride after fully dissolving, plus
Enter temperature after anhydrous calcium chloride to rise, amphion modified starch is added after room temperature is down to, stands and supports after high-speed stirred is scattered
24~48h is protected, drilling fluid is obtained.
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| CN111088003A (en) * | 2018-10-24 | 2020-05-01 | 中国石油化工股份有限公司 | Oil-gas layer protection material and preparation method and application thereof |
| CN111087983A (en) * | 2018-10-24 | 2020-05-01 | 中国石油化工股份有限公司 | Oil-gas reservoir protection material and preparation method and application thereof |
| CN111088000A (en) * | 2018-10-24 | 2020-05-01 | 中国石油化工股份有限公司 | Oil-gas layer protection material and its preparation method and application |
| CN111087982A (en) * | 2018-10-24 | 2020-05-01 | 中国石油化工股份有限公司 | Oil-gas reservoir protection material and preparation method and application thereof |
| CN113073952B (en) * | 2021-03-31 | 2023-04-21 | 中国石油化工股份有限公司 | On-site treatment process of starch-based drilling fluid |
| CN117431043A (en) * | 2023-10-17 | 2024-01-23 | 云南冶金资源股份有限公司 | A kind of potassium-based cationic flushing fluid for coal-bearing stratum drilling and its preparation method |
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