CN115872654A - Oil well cement settlement stabilizer, preparation method thereof and cement paste - Google Patents
Oil well cement settlement stabilizer, preparation method thereof and cement paste Download PDFInfo
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- CN115872654A CN115872654A CN202111136190.6A CN202111136190A CN115872654A CN 115872654 A CN115872654 A CN 115872654A CN 202111136190 A CN202111136190 A CN 202111136190A CN 115872654 A CN115872654 A CN 115872654A
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- stabilizer
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- 239000004568 cement Substances 0.000 title claims abstract description 85
- 239000003381 stabilizer Substances 0.000 title claims abstract description 48
- 239000003129 oil well Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 239000002071 nanotube Substances 0.000 claims abstract description 40
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims abstract description 30
- 238000004062 sedimentation Methods 0.000 claims abstract description 23
- 239000000725 suspension Substances 0.000 claims abstract description 20
- 239000002002 slurry Substances 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 13
- 235000012239 silicon dioxide Nutrition 0.000 claims abstract description 11
- 238000001354 calcination Methods 0.000 claims abstract description 9
- 238000001035 drying Methods 0.000 claims abstract description 9
- 239000000654 additive Substances 0.000 claims abstract description 7
- 230000000996 additive effect Effects 0.000 claims abstract description 7
- 238000000498 ball milling Methods 0.000 claims abstract description 7
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 30
- 239000000203 mixture Substances 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 15
- 239000000126 substance Substances 0.000 claims description 14
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 12
- WMFOQBRAJBCJND-UHFFFAOYSA-M Lithium hydroxide Chemical compound [Li+].[OH-] WMFOQBRAJBCJND-UHFFFAOYSA-M 0.000 claims description 12
- KWYUFKZDYYNOTN-UHFFFAOYSA-M Potassium hydroxide Chemical compound [OH-].[K+] KWYUFKZDYYNOTN-UHFFFAOYSA-M 0.000 claims description 12
- YAIQCYZCSGLAAN-UHFFFAOYSA-N [Si+4].[O-2].[Al+3] Chemical compound [Si+4].[O-2].[Al+3] YAIQCYZCSGLAAN-UHFFFAOYSA-N 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002245 particle Substances 0.000 claims description 10
- 239000004115 Sodium Silicate Substances 0.000 claims description 9
- 239000000843 powder Substances 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 9
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 9
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 8
- 239000012670 alkaline solution Substances 0.000 claims description 8
- 239000002518 antifoaming agent Substances 0.000 claims description 7
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- 229910052710 silicon Inorganic materials 0.000 claims description 6
- 239000010703 silicon Substances 0.000 claims description 6
- IRLPACMLTUPBCL-KQYNXXCUSA-N 5'-adenylyl sulfate Chemical compound C1=NC=2C(N)=NC=NC=2N1[C@@H]1O[C@H](COP(O)(=O)OS(O)(=O)=O)[C@@H](O)[C@H]1O IRLPACMLTUPBCL-KQYNXXCUSA-N 0.000 claims description 5
- 239000004111 Potassium silicate Substances 0.000 claims description 5
- 229910002800 Si–O–Al Inorganic materials 0.000 claims description 5
- 238000010335 hydrothermal treatment Methods 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- 239000002048 multi walled nanotube Substances 0.000 claims description 5
- NNHHDJVEYQHLHG-UHFFFAOYSA-N potassium silicate Chemical compound [K+].[K+].[O-][Si]([O-])=O NNHHDJVEYQHLHG-UHFFFAOYSA-N 0.000 claims description 5
- 229910052913 potassium silicate Inorganic materials 0.000 claims description 5
- 235000019353 potassium silicate Nutrition 0.000 claims description 5
- MFGOFGRYDNHJTA-UHFFFAOYSA-N 2-amino-1-(2-fluorophenyl)ethanol Chemical compound NCC(O)C1=CC=CC=C1F MFGOFGRYDNHJTA-UHFFFAOYSA-N 0.000 claims description 4
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 4
- 229910019142 PO4 Inorganic materials 0.000 claims description 4
- 239000006004 Quartz sand Substances 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- HPTYUNKZVDYXLP-UHFFFAOYSA-N aluminum;trihydroxy(trihydroxysilyloxy)silane;hydrate Chemical compound O.[Al].[Al].O[Si](O)(O)O[Si](O)(O)O HPTYUNKZVDYXLP-UHFFFAOYSA-N 0.000 claims description 4
- RQPZNWPYLFFXCP-UHFFFAOYSA-L barium dihydroxide Chemical compound [OH-].[OH-].[Ba+2] RQPZNWPYLFFXCP-UHFFFAOYSA-L 0.000 claims description 4
- 229910001863 barium hydroxide Inorganic materials 0.000 claims description 4
- HUCVOHYBFXVBRW-UHFFFAOYSA-M caesium hydroxide Inorganic materials [OH-].[Cs+] HUCVOHYBFXVBRW-UHFFFAOYSA-M 0.000 claims description 4
- AXCZMVOFGPJBDE-UHFFFAOYSA-L calcium dihydroxide Chemical compound [OH-].[OH-].[Ca+2] AXCZMVOFGPJBDE-UHFFFAOYSA-L 0.000 claims description 4
- 239000000920 calcium hydroxide Substances 0.000 claims description 4
- 229910001861 calcium hydroxide Inorganic materials 0.000 claims description 4
- 238000000227 grinding Methods 0.000 claims description 4
- 229910052621 halloysite Inorganic materials 0.000 claims description 4
- 235000021317 phosphate Nutrition 0.000 claims description 4
- 239000002620 silicon nanotube Substances 0.000 claims description 4
- 229910021430 silicon nanotube Inorganic materials 0.000 claims description 4
- 239000011863 silicon-based powder Substances 0.000 claims description 4
- 239000002109 single walled nanotube Substances 0.000 claims description 4
- 239000002904 solvent Substances 0.000 claims description 4
- 239000004408 titanium dioxide Substances 0.000 claims description 4
- 238000002604 ultrasonography Methods 0.000 claims description 4
- BVKZGUZCCUSVTD-UHFFFAOYSA-N carbonic acid Chemical class OC(O)=O BVKZGUZCCUSVTD-UHFFFAOYSA-N 0.000 claims description 3
- 239000011521 glass Substances 0.000 claims description 3
- 239000007788 liquid Substances 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- 150000007522 mineralic acids Chemical class 0.000 claims description 3
- 239000002253 acid Substances 0.000 claims description 2
- 150000007513 acids Chemical class 0.000 claims description 2
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [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
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 229920001577 copolymer Polymers 0.000 claims description 2
- 239000002270 dispersing agent Substances 0.000 claims description 2
- 239000006185 dispersion Substances 0.000 claims description 2
- 239000010881 fly ash Substances 0.000 claims description 2
- 239000011325 microbead Substances 0.000 claims description 2
- 150000003013 phosphoric acid derivatives Chemical class 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims description 2
- 239000002893 slag Substances 0.000 claims description 2
- STCOOQWBFONSKY-UHFFFAOYSA-N tributyl phosphate Chemical compound CCCCOP(=O)(OCCCC)OCCCC STCOOQWBFONSKY-UHFFFAOYSA-N 0.000 claims description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims 1
- 239000003795 chemical substances by application Substances 0.000 claims 1
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 abstract description 8
- 238000005406 washing Methods 0.000 abstract description 8
- 238000000967 suction filtration Methods 0.000 abstract description 5
- 238000006011 modification reaction Methods 0.000 abstract description 4
- 239000005543 nano-size silicon particle Substances 0.000 abstract description 4
- 238000007873 sieving Methods 0.000 abstract description 4
- 238000001132 ultrasonic dispersion Methods 0.000 abstract description 4
- 239000003513 alkali Substances 0.000 abstract 1
- 239000002994 raw material Substances 0.000 abstract 1
- 230000000087 stabilizing effect Effects 0.000 abstract 1
- 239000000243 solution Substances 0.000 description 7
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 5
- 239000008367 deionised water Substances 0.000 description 5
- 229910021641 deionized water Inorganic materials 0.000 description 5
- 239000003921 oil Substances 0.000 description 5
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000008719 thickening Effects 0.000 description 4
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 150000003839 salts Chemical class 0.000 description 3
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 2
- JAHNSTQSQJOJLO-UHFFFAOYSA-N 2-(3-fluorophenyl)-1h-imidazole Chemical compound FC1=CC=CC(C=2NC=CN=2)=C1 JAHNSTQSQJOJLO-UHFFFAOYSA-N 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- WHBMMWSBFZVSSR-UHFFFAOYSA-N 3-hydroxybutyric acid Chemical compound CC(O)CC(O)=O WHBMMWSBFZVSSR-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 2
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- CERQOIWHTDAKMF-UHFFFAOYSA-N Methacrylic acid Chemical compound CC(=C)C(O)=O CERQOIWHTDAKMF-UHFFFAOYSA-N 0.000 description 2
- WHNWPMSKXPGLAX-UHFFFAOYSA-N N-Vinyl-2-pyrrolidone Chemical compound C=CN1CCCC1=O WHNWPMSKXPGLAX-UHFFFAOYSA-N 0.000 description 2
- PPBRXRYQALVLMV-UHFFFAOYSA-N Styrene Chemical compound C=CC1=CC=CC=C1 PPBRXRYQALVLMV-UHFFFAOYSA-N 0.000 description 2
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 2
- 239000008186 active pharmaceutical agent Substances 0.000 description 2
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- -1 ketone aldehyde Chemical class 0.000 description 2
- JVTAAEKCZFNVCJ-UHFFFAOYSA-N lactic acid Chemical compound CC(O)C(O)=O JVTAAEKCZFNVCJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- LVHBHZANLOWSRM-UHFFFAOYSA-N methylenebutanedioic acid Natural products OC(=O)CC(=C)C(O)=O LVHBHZANLOWSRM-UHFFFAOYSA-N 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 229940088644 n,n-dimethylacrylamide Drugs 0.000 description 2
- YLGYACDQVQQZSW-UHFFFAOYSA-N n,n-dimethylprop-2-enamide Chemical compound CN(C)C(=O)C=C YLGYACDQVQQZSW-UHFFFAOYSA-N 0.000 description 2
- 239000010452 phosphate Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- 239000011975 tartaric acid Substances 0.000 description 2
- 235000002906 tartaric acid Nutrition 0.000 description 2
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical group CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 description 1
- OSSNTDFYBPYIEC-UHFFFAOYSA-N 1-ethenylimidazole Chemical compound C=CN1C=CN=C1 OSSNTDFYBPYIEC-UHFFFAOYSA-N 0.000 description 1
- 229920000536 2-Acrylamido-2-methylpropane sulfonic acid Polymers 0.000 description 1
- XHZPRMZZQOIPDS-UHFFFAOYSA-N 2-Methyl-2-[(1-oxo-2-propenyl)amino]-1-propanesulfonic acid Chemical compound OS(=O)(=O)CC(C)(C)NC(=O)C=C XHZPRMZZQOIPDS-UHFFFAOYSA-N 0.000 description 1
- AGBXYHCHUYARJY-UHFFFAOYSA-N 2-phenylethenesulfonic acid Chemical compound OS(=O)(=O)C=CC1=CC=CC=C1 AGBXYHCHUYARJY-UHFFFAOYSA-N 0.000 description 1
- KGIGUEBEKRSTEW-UHFFFAOYSA-N 2-vinylpyridine Chemical compound C=CC1=CC=CC=N1 KGIGUEBEKRSTEW-UHFFFAOYSA-N 0.000 description 1
- NJMYQRVWBCSLEU-UHFFFAOYSA-N 4-hydroxy-2-methylidenebutanoic acid Chemical compound OCCC(=C)C(O)=O NJMYQRVWBCSLEU-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 229910018516 Al—O Inorganic materials 0.000 description 1
- 230000005653 Brownian motion process Effects 0.000 description 1
- 229910018557 Si O Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000002776 aggregation Effects 0.000 description 1
- 238000004220 aggregation Methods 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- KGBXLFKZBHKPEV-UHFFFAOYSA-N boric acid Chemical compound OB(O)O KGBXLFKZBHKPEV-UHFFFAOYSA-N 0.000 description 1
- 239000004327 boric acid Substances 0.000 description 1
- 238000005537 brownian motion Methods 0.000 description 1
- KRVSOGSZCMJSLX-UHFFFAOYSA-L chromic acid Substances O[Cr](O)(=O)=O KRVSOGSZCMJSLX-UHFFFAOYSA-L 0.000 description 1
- 230000000052 comparative effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229940090960 diethylenetriamine pentamethylene phosphonic acid Drugs 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- DUYCTCQXNHFCSJ-UHFFFAOYSA-N dtpmp Chemical compound OP(=O)(O)CN(CP(O)(O)=O)CCN(CP(O)(=O)O)CCN(CP(O)(O)=O)CP(O)(O)=O DUYCTCQXNHFCSJ-UHFFFAOYSA-N 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- NLVXSWCKKBEXTG-UHFFFAOYSA-M ethenesulfonate Chemical compound [O-]S(=O)(=O)C=C NLVXSWCKKBEXTG-UHFFFAOYSA-M 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- AWJWCTOOIBYHON-UHFFFAOYSA-N furo[3,4-b]pyrazine-5,7-dione Chemical compound C1=CN=C2C(=O)OC(=O)C2=N1 AWJWCTOOIBYHON-UHFFFAOYSA-N 0.000 description 1
- 229920006158 high molecular weight polymer Polymers 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 239000004310 lactic acid Substances 0.000 description 1
- 235000014655 lactic acid Nutrition 0.000 description 1
- 239000003607 modifier Substances 0.000 description 1
- PNLUGRYDUHRLOF-UHFFFAOYSA-N n-ethenyl-n-methylacetamide Chemical compound C=CN(C)C(C)=O PNLUGRYDUHRLOF-UHFFFAOYSA-N 0.000 description 1
- ZQXSMRAEXCEDJD-UHFFFAOYSA-N n-ethenylformamide Chemical compound C=CNC=O ZQXSMRAEXCEDJD-UHFFFAOYSA-N 0.000 description 1
- XTOQOJJNGPEPMM-UHFFFAOYSA-N o-(2-oxo-1,3,2$l^{5}-dioxaphosphinan-2-yl)hydroxylamine Chemical compound NOP1(=O)OCCCO1 XTOQOJJNGPEPMM-UHFFFAOYSA-N 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229920002401 polyacrylamide Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000006116 polymerization reaction Methods 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- AOHJOMMDDJHIJH-UHFFFAOYSA-N propylenediamine Chemical compound CC(N)CN AOHJOMMDDJHIJH-UHFFFAOYSA-N 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- LIVNPJMFVYWSIS-UHFFFAOYSA-N silicon monoxide Inorganic materials [Si-]#[O+] LIVNPJMFVYWSIS-UHFFFAOYSA-N 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 125000000383 tetramethylene group Chemical group [H]C([H])([*:1])C([H])([H])C([H])([H])C([H])([H])[*:2] 0.000 description 1
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- Solid-Sorbent Or Filter-Aiding Compositions (AREA)
Abstract
The invention provides an oil well cement settlement stabilizer, a preparation method thereof and cement slurry. The preparation method of the sedimentation stabilizer comprises the following steps: and uniformly mixing nano aluminum oxide and nano silicon dioxide, calcining at high temperature, mixing with the nano tube, adding into an alkali solution, performing ultrasonic dispersion and modification reaction, and performing suction filtration, washing, drying, ball milling and sieving on the obtained suspension to obtain the settling stabilizer. The settlement stabilizing agent is added in 0.5-3 parts by weight of 100 parts by weight of cement, so that the settlement stabilizing performance of the cement paste can be obviously improved. The invention has simple operation, easily obtained raw materials and high product yield, and the obtained sedimentation stabilizer can adapt to cement paste systems with different densities at the temperature of 30-200 ℃, can be compatible with various additive systems and has good compatibility.
Description
Technical Field
The invention relates to the field of oil and gas well cementing engineering in the petroleum industry, in particular to an oil well cement sedimentation stabilizer and a preparation method and application thereof.
Background
The oil well cement settling stabilizer is an oil well cement additive used in well cementing cement slurry to prevent particle settling and increase the stability of the cement slurry system. In oil and gas well cementing, the stability of cement slurry directly affects the safety of field construction and the cementing quality. With the continuous development of oil and gas resource exploration in China towards unconventional, deep, ultra-deep and other directions, drilling is increasingly in contact with complex strata, the temperature and pressure of the strata are increasingly high, and the complex conditions directly influence the sedimentation stability of cement slurry and further influence the well cementation quality. Firstly, under the condition of high temperature, the Brownian motion of solid particles in cement paste is intensified, so that the viscous force of the cement paste is reduced, and the sedimentation speed is accelerated; secondly, the deep well or the abnormal high-pressure well usually needs to use high-density cement slurry, and the density and the particle size of the weighting material used by the high-density cement slurry, such as iron ore powder, are greatly different from those of cement particles, so that the sedimentation stability of the cement slurry can be seriously damaged; thirdly, under the condition of high temperature of the deep well, in order to improve the high temperature resistance of the cement paste and meet the requirement of construction time, the consumption of the retarder is often increased, and most of the retarder has certain dispersibility, so that the settlement instability of the cement paste is aggravated; fourthly, the problems of overlarge top temperature difference and the like exist in deep wells and ultra-deep wells, namely the temperature of the upper well section is far lower than the temperature of the bottom of the well, so that the cement paste in the upper well section has an ultra-retarding phenomenon, the setting time of the cement paste is greatly prolonged, and the instability of cement paste settlement is aggravated.
The existing sedimentation stabilizer is divided into organic high molecular and inorganic powder, the organic high molecular has good suspension performance under low temperature condition, the viscosity is higher, but most of the organic high molecular has poor temperature resistance, and the organic high molecular is easy to be decomposed by heat under high temperature condition, the viscosity is reduced, so that the suspension performance is reduced and even completely lost; inorganic powder has a large thickening effect on cement paste at low temperature, and when the addition amount is large, the flow property of the cement paste is reduced, thixotropy is increased, and pumping and even construction safety are seriously affected.
Disclosure of Invention
In view of the problems in the prior art, the present invention is directed to a cement settling stabilizer for oil wells, which is suitable for the development of deep high-temperature high-pressure oil and gas fields.
The second purpose of the invention is to provide a preparation method of the oil well cement sedimentation stabilizer.
The third object of the invention is to provide an oil well cement settlement stabilizer prepared by the preparation method corresponding to the second object.
The fourth purpose of the invention is to provide the application of the oil well cement sedimentation stabilizer corresponding to the purpose.
The fifth object of the present invention is to provide a cement slurry system for well cementing which is suitable for the above-mentioned object.
In order to achieve one of the purposes, the technical scheme adopted by the invention is as follows:
an oil well cement set stabilizer comprising: the nano-tube comprises a nano-tube and active silicon-aluminum oxide gathered on the surface of the nano-tube, wherein the active silicon-aluminum oxide has a Si-O-Al three-dimensional network structure.
According to the invention, the preparation method can know that the silicon dioxide and the aluminum oxide form the active silicon-aluminum oxide with the Si-O-Al three-dimensional network structure; the aggregation of the active silicon aluminum oxide on the surface of the nanotube can be observed by the naked eye.
In some preferred embodiments of the present invention, the nanotube has a tube diameter of 5 to 100nm and a tube length of 0.5 to 50 μm, and preferably, the nanotube is selected from one or more of a single-walled carbon nanotube, a multi-walled carbon nanotube, a halloysite nanotube, a titanium dioxide nanotube, and a silicon nanotube.
In some preferred embodiments of the present invention, the mass ratio of the nanotubes to the active silicon aluminum oxide is (0.001-1): 5-30), preferably (0.005-0.8): 10-30.
In some preferred embodiments of the present invention, in the active silicon aluminum oxide, the content of the silicon element is calculated as silicon dioxide, and the content of the aluminum element is calculated as aluminum oxide, so that the mass ratio of the silicon element to the aluminum element is (20-70) to (30-80), preferably (30-60) to (40-70).
In order to achieve the second purpose, the invention adopts the following technical scheme:
a preparation method of an oil well cement settlement stabilizer comprises the following steps:
s1, calcining a mixed system containing silicon dioxide and aluminum oxide to obtain a mixture;
s2, mixing the mixture, the nanotube and an alkaline solution to obtain a first suspension;
s3, carrying out hydrothermal treatment on the first suspension to obtain a second suspension containing an oil well cement settlement stabilizer;
s4, separating the oil well cement settlement stabilizing agent from the second suspension liquid, and optionally drying and/or grinding the oil well cement settlement stabilizing agent.
In some preferred embodiments of the present invention, in step S1, the mass ratio of the silica to the alumina in the mixed system is (20-70): (30-80), preferably (30-60): (40-70).
In some preferred embodiments of the present invention, in step S1, the average particle size of the silica is 10 to 100nm, preferably 10 to 80nm.
In some preferred embodiments of the present invention, in step S1, the average particle size of the alumina is 10 to 100nm, preferably 10 to 80nm.
In some preferred embodiments of the present invention, in step S1, the conditions of the calcination treatment include: the temperature is 550-1100 ℃, and the time is 1-4 h.
In some preferred embodiments of the present invention, in step S2, the mass ratio of the mixture, the nanotubes and the alkaline solution is (5-30): 0.001-1): 100, preferably (10-30): 0.005-0.8): 100.
In some preferred embodiments of the present invention, in step S2, the tube diameter of the nanotube is 5 to 100nm and the tube length is 0.5 to 50 μm.
In some preferred embodiments of the present invention, in step S2, the nanotubes are selected from one or more of single-walled carbon nanotubes, multi-walled carbon nanotubes, halloysite nanotubes, titanium dioxide nanotubes, and silicon nanotubes.
In some preferred embodiments of the present invention, in step S2, the alkaline solution includes an alkaline substance selected from one or more of calcium hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide, cesium hydroxide, lithium hydroxide, sodium silicate, and potassium silicate, and a solvent.
In some preferred embodiments of the present invention, in step S2, the alkaline substance is two selected from calcium hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide, cesium hydroxide, lithium hydroxide, sodium silicate and potassium silicate, and preferably, the molar ratio of the two alkaline substances is 1 (0.5-2).
In some preferred embodiments of the present invention, in step S2, the alkaline substance includes a first alkaline substance and a second alkaline substance, the first alkaline substance is selected from one or more of calcium hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide, cesium hydroxide and lithium hydroxide, the second alkaline substance is selected from one or more of sodium silicate and potassium silicate, and preferably, the molar ratio of the first alkaline substance to the second alkaline substance is (0.1-5): 1, preferably (0.5-2): 1.
In some preferred embodiments of the present invention, in step S2, the solvent is water.
In some preferred embodiments of the present invention, in step S2, the concentration of the alkaline substance in the alkaline solution is 1 to 15mol/L.
In some preferred embodiments of the present invention, in step S2, the mixing manner includes sequentially performing stirring and ultrasound, and the stirring conditions include: the stirring speed is 2000-5000 rpm, and the stirring time is 1-5 min; the conditions of the ultrasound include: the ultrasonic frequency is 10-30 kHz, the power is 1000-3000W, and the dispersion time is 5-30 min.
In some preferred embodiments of the present invention, in step S3, the conditions of the hydrothermal treatment include: the reaction temperature is 90-300 ℃, and the reaction time is 4-16 h.
In some preferred embodiments of the present invention, the temperature of the hydrothermal treatment in step S3 is 120 to 250 ℃.
In some preferred embodiments of the present invention, in step S4, the oil well cement sedimentation stabilizer is separated from the second suspension by suction filtration.
In some preferred embodiments of the present invention, in step S4, the drying conditions include: the temperature is 50-85 ℃; the grinding is ball milling, preferably ball milling to 300-500 meshes.
According to the invention, in step S4, before the drying treatment, a washing treatment may be performed on the sedimentation stabilizer obtained by solid-liquid separation, and the reagents for the washing treatment may be deionized water and absolute ethyl alcohol, and preferably, the deionized water is firstly used for washing, and then the absolute ethyl alcohol is used for washing.
In order to achieve the third purpose, the technical scheme adopted by the invention is as follows:
an oil well cement settling stabilizer made according to the method of making of any of the above embodiments.
In order to achieve the fourth purpose, the technical scheme adopted by the invention is as follows:
use of the oil well cement sedimentation stabilizer of any one of the above embodiments or the oil well cement sedimentation stabilizer of any one of the above embodiments in the field of oil field cementing, preferably as a cementing cement slurry additive.
According to the invention, the well cementation cement slurry comprises oil well cement, and the dosage of the sedimentation stabilizer in the well cementation cement slurry is 0.1-3% of the weight of the oil well cement.
In order to realize the fifth purpose, the technical scheme adopted by the invention is as follows:
a cement slurry system for well cementation comprises the following components in parts by weight:
wherein the sedimentation stabilizer is selected from one or more of the oil well cement sedimentation stabilizer of any one of the above embodiments and the oil well cement sedimentation stabilizer of any one of the above embodiments.
In some preferred embodiments of the present invention, the oil well cement is a grade G oil well cement.
In some preferred embodiments of the present invention, the silicon powder is at least one of quartz sand powder of 120 to 200 meshes and micro silicon powder of 1250 meshes or more.
In some preferred embodiments of the present invention, the fluid loss additive is a high molecular weight polymer.
According to the invention, the high molecular polymer is selected from at least one of binary, ternary and quaternary high molecular copolymers, preferably polymerization products of two, three or four of AM (acrylamide), NVP (N-vinylpyrrolidone), NNDMA (N, N-dimethylacrylamide), st (styrene), VI (vinylimidazole), VFA (vinylformamide), VP (vinylpyridine), VMAA (N-methyl-N-vinylacetamide), AMPS (2-acrylamido-2-methylpropanesulfonic acid), SS (styrenesulfonate), VS (vinylsulfonate), PS (propylenesulfonate), AA (acrylic acid), MAA (methacrylic acid), HEA (hydroxyethylacrylic acid) and IA (itaconic acid).
In some preferred embodiments of the present invention, the retarder is at least one selected from the group consisting of inorganic acids, organic phosphates, hydroxycarboxylic acids, and AMPS multipolymer.
According to the invention, the inorganic acid is selected from at least one of boric acid, hydrofluoric acid, chromic acid and phosphoric acid and salts thereof; the organic phosphate is selected from at least one of amino trimethylene phosphoric acid, propylene diamine tetramethylene phosphoric acid and diethylene triamine pentamethylene phosphonic acid and salts thereof; the hydroxycarboxylic acid is at least one selected from lactic acid, beta-hydroxybutyric acid, tartaric acid, citric acid and salicylic acid and salts thereof; the AMPS multipolymer is 2-acrylamide-2-methyl propanesulfonic acid.
In some preferred embodiments of the present invention, the dispersant is selected from at least one of polycarboxylic acids and ketone aldehyde condensates.
In some preferred embodiments of the present invention, the defoaming agent is selected from at least one of a silicone-based defoaming agent and a tributyl phosphate-based defoaming agent.
In some preferred embodiments of the present invention, the density modifier is at least one selected from the group consisting of high impact glass microbeads, slag, fly ash, barite, iron ore powder, iron powder, and manganese powder.
According to the invention, the high-extrusion-resistance glass bead has the extrusion resistance of over 12000 psi.
The invention has the advantages that at least the following aspects are achieved:
firstly, the settlement stabilizer provided by the invention has special structural characteristics, so that the settlement stabilizer has better suspension capacity under a high-temperature condition and can adapt to cement paste systems with different densities at the temperature of 30-200 ℃; excellent suspension performance, and the proper addition amount can ensure the settling density difference of cement paste at high temperature<0.03g/cm 3 (ii) a Can be compatible with various additive systems and has good compatibility.
Secondly, the invention firstly obtains active silicon-aluminum oxide through calcination, in the subsequent process, on one hand, the active silicon-aluminum oxide is excited under the alkaline condition to break Si-O bonds and Al-O bonds and then polymerized again to form a Si-O-Al three-dimensional network structure, on the other hand, hydroxyl on the surface of the nanotube is modified under the alkaline hydrothermal environment, and the two processes are carried out simultaneously, so that the nanotube is used as seed crystal to lead the Si-O-Al to be polymerized on the surface of the nanotube to form a structural body with better suspension stability, and the nanotube is stretched under the high temperature condition, thereby enhancing the suspension capacity of the nanotube under the high temperature.
Thirdly, the density and the thickening time of the well cementation cement slurry system are adjustable, the flow property is good, the water loss is small, the strength is high, and the cement slurry system does not fade at high temperature, so that the technical requirements of field well cementation construction are completely met.
Detailed Description
The present invention will be described in detail below with reference to examples, but the scope of the present invention is not limited to the following description.
The examples, in which specific conditions are not specified, were conducted under conventional conditions or conditions recommended by the manufacturer. The reagents or instruments used are not indicated by the manufacturer, and are all conventional products available from commercial sources.
In the following examples, the nano-alumina particles are 10 to 20nm, the nano-silica particles are 20 to 30nm, the nanotubes are multi-walled carbon nanotubes, the tube diameter is 20 to 30nm, and the tube length is 0.5 to 30 μm, which are all commercially available.
In the following examples, "parts" are "parts by weight".
Example 1
Mixing 60 parts of nano aluminum oxide and 40 parts of nano silicon dioxide, putting the mixture into a stirrer, stirring and mixing until the mixture is uniformly mixed, and observing by naked eyes to obtain non-fake particles; calcining the obtained mixture at 700 ℃ for 3h, then mixing 20 parts of the mixture with 0.1 part of nano tube, adding 100 parts of solution with the concentration of 2mol/L sodium hydroxide and the concentration of 4mol/L sodium silicate, stirring at the rotating speed of 4000rpm for 1min, and then performing ultrasonic dispersion treatment at 1800W and 20kHz for 15min; pouring into a reactor, and carrying out modification reaction for 8h at 200 ℃; and (3) carrying out suction filtration on the obtained suspension, washing with deionized water and absolute ethyl alcohol in sequence, drying at 60 ℃, carrying out ball milling by using a dry ball mill, and sieving with a 400-mesh sieve to obtain a settlement stabilizer, namely the sample 1.
Example 2
Mixing 40 parts of nano aluminum oxide and 60 parts of nano silicon dioxide, putting the mixture into a stirrer, stirring and mixing until the mixture is uniformly mixed, and observing by naked eyes to obtain non-fake particles; calcining the obtained mixture at 900 ℃ for 3h, then mixing 20 parts of the mixture with 0.05 part of nano tube, adding 100 parts of sodium hydroxide with the concentration of 4mol/L and potassium silicate solution with the concentration of 4mol/L, stirring at the rotating speed of 4000rpm for 1min, and then performing ultrasonic dispersion treatment at 1800W and 20kHz for 15min; pouring the mixture into a reactor, and carrying out modification reaction for 8 hours at 150 ℃; and (3) carrying out suction filtration on the obtained suspension, washing with deionized water and absolute ethyl alcohol in sequence, drying at 60 ℃, carrying out ball milling by using a dry ball mill, and sieving with a 400-mesh sieve to obtain a settlement stabilizer, namely the sample 2.
Example 3
This example is different from example 1 only in that "100 parts of a solution having a sodium hydroxide concentration of 2mol/L and a sodium silicate concentration of 4 mol/L" in example 1 was replaced with "100 parts of a solution having a sodium hydroxide concentration of 6 mol/L", and sample 3 was obtained under the same conditions.
Example 4
This example differs from example 1 only in that "100 parts of a solution having a sodium hydroxide concentration of 2mol/L and a sodium silicate concentration of 4 mol/L" in example 1 was replaced with "100 parts of a solution having a sodium silicate concentration of 6 mol/L", and sample 4 was obtained under the same conditions.
Example 5
This example differs from example 1 only in that the mixture obtained was calcined at 500 ℃ for 3h, instead of calcining the mixture obtained at 700 ℃ for 3h as in example 1, sample 5 being obtained under otherwise identical conditions.
Comparative example 1
Mixing 12 parts of nano aluminum oxide and 8 parts of nano silicon dioxide with 0.1 part of nano tube, adding 100 parts of solution with the concentration of 2mol/L sodium hydroxide and the concentration of 4mol/L sodium silicate, stirring at the rotating speed of 4000rpm for 1min, and then performing ultrasonic dispersion treatment at 1800W and 20kHz for 15min; pouring into a reactor, and carrying out modification reaction for 8h at 200 ℃; and (3) carrying out suction filtration on the obtained suspension, sequentially washing with deionized water and absolute ethyl alcohol, drying at 60 ℃, carrying out ball milling by using a dry ball mill, and sieving by using a 400-mesh sieve to obtain a settlement stabilizer, namely the sample 6.
Test example 1
The density is 2.50g/cm prepared according to the GB/T19139-2012 standard 3 The cement paste comprises 100 parts of Jiahua G-grade cement, 35 parts of 180-mesh quartz sand, 100 parts of iron ore powder, 50 parts of manganese powder, 7 parts of fluid loss additive (AMPS and acrylamide polymer, code number DZJ-Y), 3 parts of retarder (tartaric acid and phosphate compound, code number DZH-2), 0.5 part of defoaming agent (organic silicon, code number DZX) and 76 parts of clear water, and optionally the samples prepared in the above embodiments, wherein the dosage of the cement paste is shown in Table 1. The fluidity of the cement paste, the API water loss (200 ℃), the thickening time (200 ℃, 80 MPa), the compressive strength (200 ℃, 48 h) and the difference between the upper and lower densities of the cement paste were tested.
Wherein, jiahua grade G cement, quartz sand, iron ore powder and manganese powder are all obtained in the market. The testing method of the sedimentation stability of the cement paste comprises the following steps: pouring the prepared cement paste into a curing paste cup, then putting the curing paste cup into a high-temperature high-pressure curing kettle for stirring and curing (the rotating speed is 150 r/min), setting the curing temperature (200 ℃) and the pressure (20.7 MPa), raising the temperature and the pressure for 30min, turning off a stirring motor after the temperature and the pressure reach set values, continuing curing at constant temperature and constant pressure, measuring the densities of the upper part and the lower part of the curing paste cup by using a densimeter after 120min, and recording the difference between the upper density and the lower density.
TABLE 1
Note: in the above table, "none" means no sample was added.
As shown in table 1, sedimentation was addedAfter the stabilizer is used, the fluidity and thickening time of the cement paste are basically not influenced, the API water test of the cement paste can be reduced, the compressive strength of set cement is improved, and the density difference of the cement paste in test examples 2 and 3<0.03g/cm 3 It shows that the sedimentation stabilizer of the invention still has good suspension stability at high temperature.
It should be noted that the above-mentioned embodiments are only for explaining the present invention, and do not constitute any limitation to the present invention. The present invention has been described in relation to an exemplary embodiment, and it is understood that the words which have been used herein are words of description and illustration, rather than words of limitation. Modifications may be made to the invention as defined within the scope of the claims and modifications may be made without departing from the scope and spirit of the invention. Although the invention has been described herein with reference to particular means, materials and embodiments, the invention is not intended to be limited to the particulars disclosed herein, but rather extends to all other methods and applications having the same functionality.
Claims (11)
1. An oil well cement set stabilizer comprising: the nano-tube comprises a nano-tube and active silicon-aluminum oxide gathered on the surface of the nano-tube, wherein the active silicon-aluminum oxide has a Si-O-Al three-dimensional net structure, preferably, the diameter of the nano-tube is 5-100 nm, the length of the nano-tube is 0.5-50 mu m, and preferably, the nano-tube is selected from one or more of a single-wall carbon nano-tube, a multi-wall carbon nano-tube, a halloysite nano-tube, a titanium dioxide nano-tube and a silicon nano-tube.
2. An oil well cement settlement stabilizer according to claim 1, wherein the mass ratio of the nanotubes to the active silicon-aluminum oxide is (0.001-1) to (5-30), preferably (0.005-0.8) to (10-30).
3. An oil well cement settlement stabilizer according to claim 1 or 2, wherein the active silicon aluminum oxide contains silicon element calculated as silicon dioxide and aluminum element calculated as aluminum oxide, and the mass ratio of silicon element to aluminum element is (20-70) to (30-80), preferably (30-60) to (40-70).
4. A preparation method of an oil well cement settlement stabilizer comprises the following steps:
s1, calcining a mixed system containing silicon dioxide and aluminum oxide to obtain a mixture;
s2, mixing the mixture, the nanotube and an alkaline solution to obtain a first suspension;
s3, carrying out hydrothermal treatment on the first suspension to obtain a second suspension containing an oil well cement settlement stabilizer;
s4, separating the oil well cement settlement stabilizing agent from the second suspension liquid, and optionally drying and/or grinding the oil well cement settlement stabilizing agent.
5. The preparation method according to claim 4, wherein in step S1, the mass ratio of the silicon dioxide to the aluminum oxide in the mixed system is (20-70): (30-80), preferably (30-60): (40-70); and/or the average particle size of the silicon dioxide is 10-100 nm, preferably 10-80 nm; the average grain diameter of the aluminum oxide is 10-100 nm, preferably 10-80 nm; and/or the conditions of the calcination treatment include: the temperature is 550-1100 ℃, and the time is 1-4 h.
6. The method according to claim 4 or 5, wherein in step S2, the mass ratio of the mixture, the nanotubes and the alkaline solution is (5-30): 0.001-1): 100, preferably (10-30): 0.005-0.8): 100; and/or the tube diameter of the nanotube is 5-100 nm, the tube length is 0.5-50 μm, preferably, the nanotube is selected from one or more of single-walled carbon nanotube, multi-walled carbon nanotube, halloysite nanotube, titanium dioxide nanotube and silicon nanotube; and/or the alkaline solution comprises an alkaline substance and a solvent, wherein the alkaline substance is one or more selected from calcium hydroxide, sodium hydroxide, potassium hydroxide, barium hydroxide, cesium hydroxide, lithium hydroxide, sodium silicate and potassium silicate, the solvent is water, and preferably, the concentration of the alkaline substance in the alkaline solution is 1-15 mol/L.
7. The method according to any one of claims 4 to 6, wherein in step S2, the mixing comprises stirring and ultrasound sequentially, and the stirring conditions comprise: the stirring speed is 2000-5000 rpm, and the stirring time is 1-5 min; the conditions of the ultrasound include: the ultrasonic frequency is 10-30 kHz, the power is 1000-3000W, and the dispersion time is 5-30 min.
8. The production method according to any one of claims 4 to 7, wherein in step S3, the conditions of the hydrothermal treatment include: the reaction temperature is 90-300 ℃, and the reaction time is 4-16 h; and/or in step S4, the drying conditions include: the temperature is 50-85 ℃; the grinding is ball milling, preferably to 300-500 meshes.
9. An oil well cement settling stabilizer produced by the production method according to any one of claims 4 to 8.
10. Use of the oil well cement settling stabilizer of any one of claims 1-3 or the oil well cement settling stabilizer of claim 9 in the field of oil well cementing, preferably as a cementing cement slurry additive.
11. A cement slurry system for well cementation comprises the following components in parts by weight:
wherein the sedimentation stabilizer is selected from one or more of the oil well cement sedimentation stabilizer of any one of claims 1 to 3 and the oil well cement sedimentation stabilizer of claim 9,
preferably, the oil well cement is grade G oil well cement; the silicon powder is at least one of quartz sand powder with 120-200 meshes and micro silicon powder with 1250 meshes above; the fluid loss agent is a binary, ternary or quaternary high molecular copolymer; the retarder is selected from at least one of inorganic acids, organic phosphates, hydroxycarboxylic acids and AMPS multipolymers; the dispersant is at least one selected from polycarboxylic acids and ketone-aldehyde condensates; the defoaming agent is at least one of an organic silicon defoaming agent and a tributyl phosphate defoaming agent; the density regulator is at least one selected from high-extrusion-resistance glass micro-beads, slag, fly ash, barite, iron ore powder, iron powder and manganese powder.
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