CN113511850A - Low-heat early-strength cement paste system composition with low-temperature synergistic hydration and application - Google Patents
Low-heat early-strength cement paste system composition with low-temperature synergistic hydration and application Download PDFInfo
- Publication number
- CN113511850A CN113511850A CN202110955569.3A CN202110955569A CN113511850A CN 113511850 A CN113511850 A CN 113511850A CN 202110955569 A CN202110955569 A CN 202110955569A CN 113511850 A CN113511850 A CN 113511850A
- Authority
- CN
- China
- Prior art keywords
- low
- parts
- early
- hydration
- temperature
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000004568 cement Substances 0.000 title claims abstract description 212
- 238000006703 hydration reaction Methods 0.000 title claims abstract description 148
- 230000036571 hydration Effects 0.000 title claims abstract description 135
- 230000002195 synergetic effect Effects 0.000 title claims abstract description 76
- 239000000203 mixture Substances 0.000 title claims abstract description 11
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 94
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 80
- 239000002002 slurry Substances 0.000 claims abstract description 74
- 239000000463 material Substances 0.000 claims abstract description 52
- 239000003129 oil well Substances 0.000 claims abstract description 52
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 47
- 239000002114 nanocomposite Substances 0.000 claims abstract description 45
- 229920005646 polycarboxylate Polymers 0.000 claims abstract description 41
- 230000000694 effects Effects 0.000 claims abstract description 39
- 229910052918 calcium silicate Inorganic materials 0.000 claims abstract description 30
- 239000000378 calcium silicate Substances 0.000 claims abstract description 29
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims abstract description 29
- 239000012190 activator Substances 0.000 claims abstract description 28
- 239000002270 dispersing agent Substances 0.000 claims abstract description 22
- 239000011521 glass Substances 0.000 claims abstract description 18
- 239000011324 bead Substances 0.000 claims abstract description 17
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims abstract description 16
- 239000011575 calcium Substances 0.000 claims abstract description 16
- 229910052791 calcium Inorganic materials 0.000 claims abstract description 16
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 15
- 239000007787 solid Substances 0.000 claims abstract description 14
- 238000011161 development Methods 0.000 claims abstract description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 37
- HEMHJVSKTPXQMS-UHFFFAOYSA-M Sodium hydroxide Chemical compound [OH-].[Na+] HEMHJVSKTPXQMS-UHFFFAOYSA-M 0.000 claims description 24
- 239000010881 fly ash Substances 0.000 claims description 20
- 235000012239 silicon dioxide Nutrition 0.000 claims description 18
- 239000002893 slag Substances 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 15
- 239000010451 perlite Substances 0.000 claims description 15
- 235000019362 perlite Nutrition 0.000 claims description 15
- 239000002253 acid Substances 0.000 claims description 14
- ZCCIPPOKBCJFDN-UHFFFAOYSA-N calcium nitrate Chemical compound [Ca+2].[O-][N+]([O-])=O.[O-][N+]([O-])=O ZCCIPPOKBCJFDN-UHFFFAOYSA-N 0.000 claims description 12
- 238000006243 chemical reaction Methods 0.000 claims description 12
- 239000003638 chemical reducing agent Substances 0.000 claims description 12
- 239000002245 particle Substances 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 12
- 239000005543 nano-size silicon particle Substances 0.000 claims description 10
- 238000013035 low temperature curing Methods 0.000 claims description 9
- 239000000377 silicon dioxide Substances 0.000 claims description 9
- 238000003756 stirring Methods 0.000 claims description 8
- 239000000126 substance Substances 0.000 claims description 8
- AKEJUJNQAAGONA-UHFFFAOYSA-N sulfur trioxide Chemical compound O=S(=O)=O AKEJUJNQAAGONA-UHFFFAOYSA-N 0.000 claims description 8
- KEZYHIPQRGTUDU-UHFFFAOYSA-N 2-[dithiocarboxy(methyl)amino]acetic acid Chemical compound SC(=S)N(C)CC(O)=O KEZYHIPQRGTUDU-UHFFFAOYSA-N 0.000 claims description 7
- ZHJGWYRLJUCMRT-UHFFFAOYSA-N 5-[6-[(4-methylpiperazin-1-yl)methyl]benzimidazol-1-yl]-3-[1-[2-(trifluoromethyl)phenyl]ethoxy]thiophene-2-carboxamide Chemical compound C=1C=CC=C(C(F)(F)F)C=1C(C)OC(=C(S1)C(N)=O)C=C1N(C1=C2)C=NC1=CC=C2CN1CCN(C)CC1 ZHJGWYRLJUCMRT-UHFFFAOYSA-N 0.000 claims description 7
- 230000018109 developmental process Effects 0.000 claims description 7
- 239000004115 Sodium Silicate Substances 0.000 claims description 6
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 6
- 239000000292 calcium oxide Substances 0.000 claims description 6
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 6
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 claims description 6
- 238000010276 construction Methods 0.000 claims description 6
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 6
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 claims description 6
- 229910052911 sodium silicate Inorganic materials 0.000 claims description 6
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims description 6
- BVKZGUZCCUSVTD-UHFFFAOYSA-L Carbonate Chemical compound [O-]C([O-])=O BVKZGUZCCUSVTD-UHFFFAOYSA-L 0.000 claims description 5
- -1 alcohol amine Chemical class 0.000 claims description 5
- 239000002956 ash Substances 0.000 claims description 5
- DZSVIVLGBJKQAP-UHFFFAOYSA-N 1-(2-methyl-5-propan-2-ylcyclohex-2-en-1-yl)propan-1-one Chemical compound CCC(=O)C1CC(C(C)C)CC=C1C DZSVIVLGBJKQAP-UHFFFAOYSA-N 0.000 claims description 4
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 4
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 4
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 claims description 4
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 claims description 4
- UIIMBOGNXHQVGW-UHFFFAOYSA-M Sodium bicarbonate Chemical compound [Na+].OC([O-])=O UIIMBOGNXHQVGW-UHFFFAOYSA-M 0.000 claims description 4
- QAOWNCQODCNURD-UHFFFAOYSA-L Sulfate Chemical compound [O-]S([O-])(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-L 0.000 claims description 4
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 4
- 239000013530 defoamer Substances 0.000 claims description 4
- KPUWHANPEXNPJT-UHFFFAOYSA-N disiloxane Chemical class [SiH3]O[SiH3] KPUWHANPEXNPJT-UHFFFAOYSA-N 0.000 claims description 4
- 229920000570 polyether Polymers 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- 239000011148 porous material Substances 0.000 claims description 4
- 229910052938 sodium sulfate Inorganic materials 0.000 claims description 4
- 235000011152 sodium sulphate Nutrition 0.000 claims description 4
- 238000004132 cross linking Methods 0.000 claims description 3
- 238000001723 curing Methods 0.000 claims description 3
- 238000013461 design Methods 0.000 claims description 3
- 238000007667 floating Methods 0.000 claims description 3
- YIBPLYRWHCQZEB-UHFFFAOYSA-N formaldehyde;propan-2-one Chemical class O=C.CC(C)=O YIBPLYRWHCQZEB-UHFFFAOYSA-N 0.000 claims description 3
- 229910000027 potassium carbonate Inorganic materials 0.000 claims description 3
- 235000011181 potassium carbonates Nutrition 0.000 claims description 3
- HXKKHQJGJAFBHI-UHFFFAOYSA-N 1-aminopropan-2-ol Chemical compound CC(O)CN HXKKHQJGJAFBHI-UHFFFAOYSA-N 0.000 claims description 2
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 2
- 239000010755 BS 2869 Class G Substances 0.000 claims description 2
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 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
- 230000033558 biomineral tissue development Effects 0.000 claims description 2
- 238000001816 cooling Methods 0.000 claims description 2
- 239000012153 distilled water Substances 0.000 claims description 2
- 239000003814 drug Substances 0.000 claims description 2
- HDERJYVLTPVNRI-UHFFFAOYSA-N ethene;ethenyl acetate Chemical group C=C.CC(=O)OC=C HDERJYVLTPVNRI-UHFFFAOYSA-N 0.000 claims description 2
- 238000011049 filling Methods 0.000 claims description 2
- 239000013505 freshwater Substances 0.000 claims description 2
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 2
- 239000007791 liquid phase Substances 0.000 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 238000012423 maintenance Methods 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 claims description 2
- 239000000178 monomer Substances 0.000 claims description 2
- 229910052757 nitrogen Inorganic materials 0.000 claims description 2
- 230000006911 nucleation Effects 0.000 claims description 2
- 238000010899 nucleation Methods 0.000 claims description 2
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 2
- 239000012071 phase Substances 0.000 claims description 2
- 229920000417 polynaphthalene Polymers 0.000 claims description 2
- 239000011736 potassium bicarbonate Substances 0.000 claims description 2
- 229910000028 potassium bicarbonate Inorganic materials 0.000 claims description 2
- 235000015497 potassium bicarbonate Nutrition 0.000 claims description 2
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 claims description 2
- CHWRSCGUEQEHOH-UHFFFAOYSA-N potassium oxide Chemical compound [O-2].[K+].[K+] CHWRSCGUEQEHOH-UHFFFAOYSA-N 0.000 claims description 2
- 229910001950 potassium oxide Inorganic materials 0.000 claims description 2
- OTYBMLCTZGSZBG-UHFFFAOYSA-L potassium sulfate Chemical compound [K+].[K+].[O-]S([O-])(=O)=O OTYBMLCTZGSZBG-UHFFFAOYSA-L 0.000 claims description 2
- 229910052939 potassium sulfate Inorganic materials 0.000 claims description 2
- 235000011151 potassium sulphates Nutrition 0.000 claims description 2
- 230000001737 promoting effect Effects 0.000 claims description 2
- 239000013535 sea water Substances 0.000 claims description 2
- 229910000030 sodium bicarbonate Inorganic materials 0.000 claims description 2
- 235000017557 sodium bicarbonate Nutrition 0.000 claims description 2
- 229910000029 sodium carbonate Inorganic materials 0.000 claims description 2
- 235000017550 sodium carbonate Nutrition 0.000 claims description 2
- KKCBUQHMOMHUOY-UHFFFAOYSA-N sodium oxide Chemical compound [O-2].[Na+].[Na+] KKCBUQHMOMHUOY-UHFFFAOYSA-N 0.000 claims description 2
- 229910001948 sodium oxide Inorganic materials 0.000 claims description 2
- 239000007790 solid phase Substances 0.000 claims description 2
- BDHFUVZGWQCTTF-UHFFFAOYSA-M sulfonate Chemical compound [O-]S(=O)=O BDHFUVZGWQCTTF-UHFFFAOYSA-M 0.000 claims description 2
- 238000006116 polymerization reaction Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 abstract description 11
- 239000002344 surface layer Substances 0.000 abstract description 8
- 230000008719 thickening Effects 0.000 abstract description 6
- 238000001914 filtration Methods 0.000 abstract description 4
- 230000009044 synergistic interaction Effects 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 42
- 235000012241 calcium silicate Nutrition 0.000 description 22
- 238000002474 experimental method Methods 0.000 description 10
- NMJORVOYSJLJGU-UHFFFAOYSA-N methane clathrate Chemical compound C.C.C.C.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O.O NMJORVOYSJLJGU-UHFFFAOYSA-N 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 238000012360 testing method Methods 0.000 description 9
- 239000007789 gas Substances 0.000 description 8
- 239000004575 stone Substances 0.000 description 7
- 239000003921 oil Substances 0.000 description 6
- 230000006835 compression Effects 0.000 description 5
- 238000007906 compression Methods 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 238000011056 performance test Methods 0.000 description 5
- 238000000354 decomposition reaction Methods 0.000 description 4
- 238000001514 detection method Methods 0.000 description 4
- 239000000654 additive Substances 0.000 description 3
- 230000000996 additive effect Effects 0.000 description 3
- 230000005465 channeling Effects 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical group [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000005416 organic matter Substances 0.000 description 2
- 230000035699 permeability Effects 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 238000012827 research and development Methods 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000011398 Portland cement Substances 0.000 description 1
- 229910021536 Zeolite Inorganic materials 0.000 description 1
- 230000001133 acceleration Effects 0.000 description 1
- ACOGMWBDRJJKNB-UHFFFAOYSA-N acetic acid;ethene Chemical group C=C.CC(O)=O ACOGMWBDRJJKNB-UHFFFAOYSA-N 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- AGWMJKGGLUJAPB-UHFFFAOYSA-N aluminum;dicalcium;iron(3+);oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Al+3].[Ca+2].[Ca+2].[Fe+3] AGWMJKGGLUJAPB-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- JHLNERQLKQQLRZ-UHFFFAOYSA-N calcium silicate Chemical compound [Ca+2].[Ca+2].[O-][Si]([O-])([O-])[O-] JHLNERQLKQQLRZ-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 239000011083 cement mortar Substances 0.000 description 1
- 239000010883 coal ash Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- HOOWDPSAHIOHCC-UHFFFAOYSA-N dialuminum tricalcium oxygen(2-) Chemical compound [O--].[O--].[O--].[O--].[O--].[O--].[Al+3].[Al+3].[Ca++].[Ca++].[Ca++] HOOWDPSAHIOHCC-UHFFFAOYSA-N 0.000 description 1
- BCAARMUWIRURQS-UHFFFAOYSA-N dicalcium;oxocalcium;silicate Chemical compound [Ca+2].[Ca+2].[Ca]=O.[O-][Si]([O-])([O-])[O-] BCAARMUWIRURQS-UHFFFAOYSA-N 0.000 description 1
- HNPSIPDUKPIQMN-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Al]O[Al]=O HNPSIPDUKPIQMN-UHFFFAOYSA-N 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 1
- 239000011325 microbead Substances 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 235000010755 mineral Nutrition 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 235000019976 tricalcium silicate Nutrition 0.000 description 1
- 229910021534 tricalcium silicate Inorganic materials 0.000 description 1
- 229920002554 vinyl polymer Polymers 0.000 description 1
- 239000010457 zeolite Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells
- C09K8/46—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement
- C09K8/467—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells containing inorganic binders, e.g. Portland cement containing additives for specific purposes
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/20—Mortars, concrete or artificial stone characterised by specific physical values for the density
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B2201/00—Mortars, concrete or artificial stone characterised by specific physical values
- C04B2201/50—Mortars, concrete or artificial stone characterised by specific physical values for the mechanical strength
Abstract
The invention discloses a composition and application of a low-heat early-strength cement slurry system with low-temperature synergistic hydration and synergism, wherein the low-heat early-strength cement slurry system comprises the following components in parts by weight: 100 parts of oil well cement, 70-100 parts of low-hydration-heat-activity cementing material, 3.2-6.3 parts of hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, 1.8-5.4 parts of low-temperature activator, 0.7-1.3 parts of fluid loss agent, 0.3-0.6 part of dispersant, 0.2-1.0 part of defoaming agent, 15-20 parts of hollow glass beads and 60-92 parts of water. The cement paste system adopts the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent and the low-temperature activator to realize synergistic interaction on the basis of selecting a low-hydration heat-activity cementing material, and jointly promotes the compressive strength of the set cement in a curing period, has the characteristics of small hydration heat release, high early strength and the like, has the advantages of adjustable density, adjustable thickening time, good rheological property, small filtration loss, short waiting setting time and the like, is suitable for cementing a deepwater surface layer and a hydrate layer, and lays a solid foundation for development of ocean oil and gas resources.
Description
Technical Field
The invention relates to the technical field of oil and gas field development, in particular to a low-heat early-strength cement paste system which is particularly suitable for low-temperature synergistic hydration and synergism of natural gas hydrate in south China sea.
Background
At present, China still mainly explores and develops land oil and gas resources, and develops a few ocean oil and gas resources. The initial prediction shows that the natural gas hydrate resource amount in the sea area of China is about 800 hundred million tons of oil equivalent. Meanwhile, the natural gas hydrate is a clean future energy source and can powerfully reduce the carbon emission. At present, China already carries out two times of trial production operation on the sea area natural gas hydrate, and realizes the great leap from exploratory trial production to experimental trial production. In order to realize the commercial development of natural gas hydrate in the later period, well cementation operation needs to be carried out on the surface layer and hydrate layer of the ocean deep water. However, the conventional cement paste system can cause the decomposition of hydrate and even geological disasters such as landslide, tsunami and the like. Therefore, the research and development of the low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration has great milestone significance for the development and utilization of marine oil and gas resources in China.
Oil well cement usually contains minerals such as tricalcium silicate, dicalcium silicate, tetracalcium aluminoferrite, tricalcium aluminate and the like, and after being mixed with water, the hydration process begins, the chemical reaction is accompanied by the release of heat, and natural gas hydrate can only exist stably in low-temperature and high-pressure environments. The heat released by the hydration of oil well cement can raise the temperature of a hydrate layer, the hydrate is heated and decomposed, the problems of water-gas channeling, instability of a well wall and the like are caused, and the series of problems of failure of well cementation operation and the like are caused. Meanwhile, the low-temperature environment of the hydrate layer causes the cement paste to have overlong setting time and slow development of the strength of the set cement, and the drilling cost of hydrate exploitation is increased. Therefore, the well cementation cement slurry system is required to have lower hydration heat release and shorter setting time, and also ensure that the set cement has enough compressive strength in a low-temperature environment, so that the requirements of well cementation operation and subsequent exploitation on the ocean deep water surface layer and the hydrate layer are fully met.
Chinese patent document with publication number CN105199691A discloses a well cementation cement slurry for hydrate-containing stratum, which is composed of low-density lightening material 15-65%, drag reducer 0.5-2%, fluid loss additive 0.1-0.5%, retarder 0.1-3%, early strength agent 2-7% and water 40-100% which are respectively added according to 100% of low-temperature low-hydration heat well cementation material. The cement paste system simultaneously uses the retarder and the early strength agent, the performances of the retarder and the early strength agent are in conflict, and although hydration heat release can be greatly reduced, the early compressive strength of the set cement at low temperature is not high.
Chinese patent document with publication number CN112723822A discloses a low hydration heat low density cement slurry system for well cementation, in which low heat portland cement and a composite lightening material (composed of 60% closed perlite and 40% secondary fly ash) are used to replace oil well cement, although the contradiction and the difficulty of using retarder and early strength agent simultaneously in the existing system are solved, the temperature application range of the cement slurry system for well cementation is 40-85 ℃, which is far higher than the decomposition temperature of a hydrate stratum.
Chinese patent publication No. CN113003962A discloses a gel material for cement slurry, which is mainly thought of using metakaolin, light calcium carbonate, ultrafine fly ash and zeolite powder to replace oil well cement, thereby achieving the purpose of reducing hydration heat. Although the cement paste system has better fluidity, adjustable thickening time and higher early compressive strength in a low-temperature environment, the cement paste system has limited degree of reducing hydration heat release of cement.
Chinese patent publication No. CN109266320A discloses a low hydration heat cement slurry, which is mainly thought of adding a low hydration heat auxiliary cementing material to G-grade oil well cement slurry to replace a part of oil well cement. Although the low hydration heat cement paste can greatly reduce the hydration heat release of cement, the volcanic ash effect of the auxiliary cementing material is not fully exerted at low temperature, and the early compressive strength of the set cement is not high.
In conclusion, aiming at the worldwide problem of reducing the hydration heat release of the oil well cement, numerous scholars at home and abroad adopt auxiliary cementing materials (fly ash, slag and the like) to replace part of the oil well cement so as to develop a method for preparing a low-heat early-strength cement slurry system. Although the method can effectively reduce the hydration heat release of the oil well cement paste system, the cement stone under low temperature has higher compressive strength in a shorter time, and the setting time is too long, so that the applicable temperature is higher.
Therefore, a novel low-heat early-strength cement slurry system must be developed, the hydration heat release of cement slurry is reduced, the early compressive strength of cement stones under the low-temperature condition is improved, theoretical guidance is provided for the cementing operation of deep-water surface layers and hydrate layers of oceans in China, and a solid foundation is laid for the commercial development of natural gas hydrate resources.
Disclosure of Invention
The invention provides a novel low-heat early-strength cement slurry system with synergistic effect of low-temperature synergistic hydration on the basis of the existing low-hydration-heat well cementation cement slurry system aiming at the difficult problem of well cementation operation of ocean deep water surface layers and hydrate layers, and aims to solve a series of problems of excessive hydration heat release, overlong setting time, low early strength in a low-temperature environment and the like of an oil well cement slurry system. The low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration creatively introduces the calcium silicate hydrate-polycarboxylate ether nano composite early-strength agent, fully improves the hydration degree of oil well cement, enhances the early compressive strength of set cement under the low-temperature curing condition, and ensures that the volume shrinkage and strength decay phenomena of the set cement cannot occur in the later period; meanwhile, the low-temperature activator is used, so that the early-stage volcanic ash reaction of the low-hydration heat-activity cementing material is promoted, the permeability is greatly reduced, the micro-pore structure of the set cement is improved, and the compressive strength of the set cement is further improved. The two have synergistic effect, and the early mechanical property of the set cement is enhanced. The low-heat early-strength cement slurry system with synergistic low-temperature synergistic hydration has the advantages of low hydration heat release, adjustable density, adjustable thickening time, good rheological property, less filtration loss, short setting time, high low-temperature early-strength and the like, can effectively solve the problems of hydrate decomposition and low early-strength of set cement and the like caused by hydration heat release of oil well cement, is suitable for cementing a marine deep water surface layer and a hydrate layer, and meets the requirements of natural gas hydrate on-site cementing.
In order to realize the purpose of the invention, the technical scheme of the invention is as follows:
the invention provides a low-heat early-strength cement paste system with low-temperature synergistic hydration, which comprises the following components in parts by mass: 100 parts of oil well cement, 70-100 parts of low-hydration-heat-activity cementing material, 3.2-6.3 parts of hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, 1.8-5.4 parts of low-temperature activator, 0.7-1.3 parts of fluid loss agent, 0.3-0.6 part of dispersant, 0.2-1.0 part of defoaming agent, 15-20 parts of hollow glass beads and 60-92 parts of water.
Preferably, the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent comprises the following components in parts by weight: 8-12 parts of polycarboxylic acid high-efficiency water reducing agent, 8-12 parts of calcium nitrate tetrahydrate, 8-10 parts of sodium metasilicate pentahydrate, 0.4-0.5 part of sodium hydroxide and 62.5-75.6 parts of distilled water, wherein the polyether monomer of the polycarboxylic acid high-efficiency water reducing agent for the calcium silicate hydrate-polycarboxylic acid ether nano composite early strength agent is one or a mixture of alpha-methallyl-omega-methoxyl or omega-hydroxyl poly (ethylene glycol) and prenyloxy poly (ethylene glycol) ether.
Preferably, the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is prepared by the following steps: firstly, preparing 20-30% of solution by mass of sodium hydroxide at room temperature, preparing 7-8% of solution by mass of polycarboxylic acid high-efficiency water reducing agent at room temperature, preparing 35-45% of solution by mass of calcium nitrate tetrahydrate in 80-90 ℃ water bath, preparing 18-23% of solution by mass of sodium metasilicate pentahydrate in 80-90 ℃ water bath, cooling the prepared calcium nitrate solution and sodium silicate solution to room temperature after the medicine is completely dissolved, then adjusting the pH value of the polycarboxylic acid high-efficiency water reducing agent solution to 8-10 by using the sodium hydroxide solution, continuously adding the calcium nitrate solution and the sodium silicate solution into the polycarboxylic acid high-efficiency water reducing agent solution at constant speed, adjusting the flow rate of the two solutions, ensuring that the two solutions are added simultaneously within the same time, synchronously filling nitrogen to displace air, stirring at a constant speed of 200-300 rpm at the temperature of 20 ℃, continuously monitoring the pH value of the reaction solution, maintaining the pH value of the reaction solution at 11-13 by using a sodium hydroxide solution, stirring the reaction solution at room temperature for 24-36 hours after the calcium nitrate solution and the sodium silicate solution are added, and finally preparing a solution with the mass concentration of 25-30% according to the amount of the added substances to obtain the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent. The calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is a milk white liquid, and the density of the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is 1.1-1.2 g/cm3。
Preferably, the low-temperature early strength agent is a sulfate, a carbonate and an alcohol amine organic matter according to a mass ratio of 1: 1.3-1.7: 0.2-0.5 is dissolved in water to form a solution with the mass concentration of 40-50%. The sulfate is one of sodium sulfate, potassium sulfate and ammonium sulfate; the carbonate is one of sodium carbonate, potassium carbonate, sodium bicarbonate and potassium bicarbonate; the alcohol amine organic matter is one of triethanolamine and diethanol monoisopropanolamine. The low-temperature early strength agent is a colorless transparent liquid, and the density of the low-temperature early strength agent is 1.2-1.3 g/cm3。
Preferably, the low hydration heat activity cementing material comprises the following components in parts by weight: 30-60 parts of fly ash, 20-40 parts of slag, 3-12 parts of superfine expanded perlite and 5-25 parts of solid nano silicon dioxide. The fly ash comprises the following chemical components in 100 parts by mass: 54.4 parts of silicon dioxide, 24.2 parts of aluminum oxide, 5.8 parts of ferric oxide, 5.6 parts of calcium oxide, 2.1 parts of sulfur trioxide, 1-50 mu m of fly ash particle diameter and 2.5-2.6 g/cm of density3(ii) a The slag comprises the following chemical components in 100 parts by mass: 34.6 parts of calcium oxide, 32.8 parts of silicon dioxide, 10.6 parts of aluminum oxide, 10.2 parts of magnesium oxide and 3.8 parts of sulfur trioxide, wherein the particle size of slag is 1-100 mu m, and the density is 2.8-2.9 g/cm3(ii) a The chemical components of 100 parts by mass of the superfine expanded perlite are as follows: 72.3 parts of silicon dioxide, 12.1 parts of aluminum oxide, 3.8 parts of potassium oxide, 3.6 parts of sodium oxide and 1.2 parts of calcium oxide, wherein the particle size of the superfine expanded perlite is 1-74 mu m, and the density is 2.2-2.4 g/cm3(ii) a The particle diameter of the solid nano silicon dioxide is 10-60 nm, and the density is 0.50-1.50 g/cm3The mass content of the silicon dioxide is more than or equal to 90 percent.
According to the invention, the research and development principle and the design method of the low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration are set out as follows:
(1) according to the hydration heat release rate and the heat release total amount of the oil well cement in the curing period, the dosage of the low hydration heat activity cementing material is definitely used, so as to achieve the purpose of reducing hydration temperature rise of the low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration, the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is used, the nucleation energy of the C-S-H gel phase is reduced to accelerate the silicate hydration reaction, the early compressive strength of the set cement under the low-temperature maintenance condition is enhanced, meanwhile, the low-temperature activator is used for promoting the volcanic ash reaction of the low-hydration-heat-activity cementing material, improving the micro-pore structure of the set cement, optimizing the mechanical property of the set cement, further improving the early compressive strength of the set cement under the low-temperature curing condition, and achieving the purposes of small hydration heat release and low-temperature early strength of the low-heat early-strength cement slurry system with synergistic effect of low-temperature synergistic hydration;
(2) according to the numerical value of the calcium-silicon ratio in the oil well cement, the dosage of calcium nitrate tetrahydrate and sodium metasilicate pentahydrate in the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is determined to prepare the early strength agents with different calcium-silicon ratios, so that the hydration of the oil well cement is accelerated at different speeds, and the early mechanical property of the set cement is enhanced;
(3) according to related industrial standards, the dosage of hollow glass beads, a fluid loss agent, a dispersing agent, a defoaming agent and other materials in the low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration is determined, and the engineering performances of the cement paste system such as density, fluid loss amount, rheological parameters and the like are adjusted to meet the construction requirements of a well cementation site.
According to the invention, preferably, the fluid loss agent is one or a mixture of two of a vinyl acetate-ethylene crosslinking fluid loss agent and a fluid loss agent polymerized by acrylamide and 2-acrylamide-2-methylpropanesulfonic Acid (AMPS).
According to the present invention, preferably, the dispersant is one of a sulfonated formaldehyde-acetone polycondensate dispersant or a polynaphthalene sulfonate dispersant.
According to the invention, preferably, the defoaming agent is one of organic siloxane, polyether and polyether-organic siloxane composite defoaming agents.
According to the invention, preferably, the particle size of the hollow glass bead is 50-60 μm, and the density is 0.53-0.57 g/cm3The bearing capacity is more than or equal to 40MPa, and the floating rate is more than or equal to 92 percent.
According to the invention, preferably, the oil well cement is one of oil well class A cement, oil well class C cement and oil well class G cement; the water is one of fresh water, seawater and mineralization degree water.
According to the invention, the preparation method of the low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration comprises the following steps:
well cement, a low hydration heat activity cementing material, a fluid loss agent, a dispersing agent and hollow glass beads are uniformly mixed, hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, a low temperature activator, water and a defoaming agent are poured into a stirring slurry cup of a constant speed stirrer, a solid phase material is continuously and uniformly poured into the stirring slurry cup to be mixed with a liquid phase material within 15s at the rotating speed of 4000rmp, then the rotating speed is adjusted to 12000rmp, and the mixture is stirred for 35s, so that the low heat early strength cement slurry system with the synergistic effect of low temperature and hydration can be obtained.
The low-heat early-strength cement slurry system with synergistic low-temperature synergistic hydration has the advantages of low hydration heat release, small filtration loss, short waiting setting time, high early compressive strength at low temperature and the like. The invention has the technical characteristics that: (1) according to the temperature and pressure condition of the stable existence of the natural gas hydrate, calculating the hydration heat release degree to be reduced by the well cementation cement slurry system, and further adjusting the dosage ratio between the oil well cement and the low hydration heat activity cementing material, thereby achieving the purpose of reducing the hydration heat release of the well cementation cement slurry system; (2) in the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent, calcium nitrate tetrahydrate and sodium metasilicate pentahydrate can be controlled to prepare calcium silicate hydrate-polycarboxylate ether nano composite early strength agent with different calcium-silicon ratios and different acceleration effects; (3) the hydration process of oil well cement in the low-heat early-strength cement slurry system with synergistic effect of low-temperature synergistic hydration is accelerated by adopting the hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, and the early compressive strength of the cement stone under the low-temperature curing condition is greatly improved while the hydration heat release of the cement slurry system is not remarkably increased; (4) the low-temperature activator is introduced into the low-temperature low-hydration-heat well cementation cement slurry, the volcanic ash reaction of the low-hydration-heat activity cementing material is promoted, the micro pore structure of the set cement is more compact, the early compressive strength of the set cement under the low-temperature curing condition is further improved, the compatibility of the low-temperature activator and the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent used in the invention is good, and the low-temperature activator and the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent are mutually synergistic, so that the early mechanical property of the set cement under the low-temperature condition is jointly optimized; (5) the addition of the hydrated calcium silicate-polycarboxylate ether nano composite early strength agent shortens the thickening time and static gel strength transition time of a low hydration heat well cementation cement slurry system under the low temperature condition, and reduces the probability of water-gas channeling; (6) compared with the traditional early strength agent, the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent effectively prevents the problem of later strength decline of the set cement, and optimizes the later mechanical property of the set cement.
Compared with the prior art, the invention has the following beneficial effects:
1. the low-temperature low-hydration-heat well cementation cement slurry has the characteristics of low hydration heat, low-temperature early strength and the like, and the peak value of the temperature rise of the system is less than 42 ℃ under the condition of a semi-adiabatic experiment; curing at 15 ℃, wherein the compression strength of the set cement is more than 6.9MPa after 24 hours, the compression strength of the set cement is more than 16.8MPa after 48 hours, and the compression strength cannot be declined along with the lapse of time;
2. the low-heat early-strength cement slurry system with the low-temperature synergistic hydration function has adjustable density, good rheological property, less filtration loss, short waiting time, wide material source, low cost, convenient preparation on a well cementation site, properly adjustable engineering performance and convenient construction operation;
3. the low-heat early-strength cement slurry system with synergistic effect of low-temperature synergistic hydration can be suitable for cementing of a deep sea surface layer and a hydrate layer, and the design method of the system can scientifically and effectively guide other low-temperature low-hydration-heat cement slurry systems, so that the low-heat early-strength cement slurry system has a very wide market application prospect.
Drawings
FIG. 1 is a cement slurry hydration temperature rise curve of example 1, comparative example 1 and comparative example 4.
FIG. 2 shows the compressive strengths of the set cements of example 1, comparative example 1 and comparative example 4 cured at 15 ℃ for different ages.
Detailed Description
The present invention is further illustrated by, but not limited to, the following specific examples and comparative examples.
The experimental method comprises the following steps: preparing low-temperature low-hydration heat cementing cement slurry according to a standard GB/T19139-.
The sources and properties of the raw materials used in the following examples and comparative examples are as follows:
oil well cement: g-grade oil well cement purchased from Weifang Weiwei special cement Limited company;
fly ash: secondary fly ash from platinum-wet refractory ltd, engorgement, inc;
slag: s95 slag available from platinum-wet refractory ltd of consortium;
ultra-fine expanded perlite: purchased from Xinyangming industry Co Ltd, the particle diameter is 1 to 74 mu m, the density is 2.2 to 2.4g/cm3；
Calcium silicate hydrate-polycarboxylic acid ether nano composite early strength agent: prepared in laboratories of China university of Petroleum (east China) and is milk white liquid with the density of 1.1-1.2 g/cm3The calcium-silicon ratio is 1:1, and the mass concentration is 25%;
low-temperature activating agent: the sodium sulfate, the carbonate and the alcohol amine are selected from triethanolamine, and the mass ratio of the sodium sulfate, the potassium carbonate and the triethanolamine is 1:1.5: 0.3. The low-temperature activator is colorless transparent liquid with the density of 1.2-1.3 g/cm3The mass concentration is 50%;
fluid loss agent: the polyvinyl acetate-ethylene cross-linking fluid loss agent is prepared by laboratories of China Petroleum university (east China) and has the model of MT-L;
dispersing agent: purchased from Henan Wei Hui chemical Co., Ltd, is a sulfonated formaldehyde-acetone polycondensate drag reducer with the model of USZ;
defoaming agent: purchased from Doudou Meike Petroleum science and technology Limited, is a polyether-organosiloxane composite defoamer with the model of DF-E;
hollow glass beads: from Zhengzhou Shenglaite hollow micro bead Co Ltd, the particle size is 50 to 60 μm, the density is 0.53 to 0.57g/cm3The bearing capacity is more than or equal to 40MPa, and the floating rate is more than or equal to 92 percent.
Example 1
The low-heat early-strength cement paste system with the synergistic effect of low-temperature synergistic hydration is prepared from the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 100 parts of low-hydration heat-activity cementing material, 5.8 parts of hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, 4.5 parts of low-temperature activator, 0.9 part of fluid loss agent, 0.3 part of dispersing agent, 0.2 part of defoaming agent, 16 parts of hollow glass beads, 81 parts of water and 1.45G/cm slurry density3。
The low hydration heat activity cementing material comprises the following components in parts by weight: 43 parts of fly ash, 36 parts of slag, 9 parts of superfine expanded perlite and 12 parts of solid nano silicon dioxide.
The preparation method of the low-heat early-strength cement paste system with synergistic low-temperature synergistic hydration comprises the following steps:
according to the standard GB/T19139-.
Example 2
The low-heat early-strength cement paste system with the synergistic effect of low-temperature synergistic hydration is prepared from the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 70 parts of low-hydration heat-activity cementing material, 3.6 parts of calcium silicate hydrate-polycarboxylate ether nano composite early strength agent, 2.8 parts of low-temperature activator, 0.7 part of fluid loss agent, 0.5 part of dispersing agent, 0.4 part of defoaming agent, hollow glass microsphere18 portions of water and 70 portions of water, and the density of slurry is 1.52g/cm3。
The low hydration heat activity cementing material comprises the following components in parts by weight: 43 parts of fly ash, 36 parts of slag, 9 parts of superfine expanded perlite and 12 parts of solid nano silicon dioxide.
The preparation method is the same as example 1.
Example 3
The low-heat early-strength cement paste system with the synergistic effect of low-temperature synergistic hydration is prepared from the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 100 parts of low-hydration heat-activity cementing material, 4.3 parts of hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, 5.4 parts of low-temperature activator, 1.2 parts of fluid loss agent, 0.4 part of dispersing agent, 0.3 part of defoaming agent, 16 parts of hollow glass beads, 85 parts of water and 1.43G/cm slurry density3。
The low hydration heat activity cementing material comprises the following components in parts by weight: 43 parts of fly ash, 36 parts of slag, 9 parts of superfine expanded perlite and 12 parts of solid nano silicon dioxide.
The preparation method is the same as example 1.
Comparative example 1
The comparative example is the cement raw stock of the common G-grade oil well, the mass ratio of water to cement is 0.44, and the density of the slurry is 1.89G/cm3。
The preparation method is the same as example 1.
Comparative example 2
The comparative example is a low hydration heat well cementation cement slurry system added with fly ash, which comprises the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 100 parts of fly ash, 1.3 parts of fluid loss additive, 0.3 part of dispersant, 15 parts of hollow glass beads and 88 parts of water, wherein the slurry density is 1.41G/cm3。
The preparation method is the same as example 1.
Comparative example 3
The comparative example is a low hydration heat well cementation cement slurry system added with slag, which comprises the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 100 parts of slag, 0.8 part of fluid loss additive, 0.6 part of dispersant and 0.6 part of defoamer20 parts of hollow glass beads, 88 parts of water and 1.56g/cm of slurry density3。
The preparation method is the same as example 1.
Comparative example 4
The comparative example is a low hydration heat cementing slurry system added with a low hydration heat activity cementing material, and comprises the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 100 parts of low-hydration heat-activity cementing material, 0.7 part of fluid loss agent, 0.4 part of dispersing agent, 0.4 part of defoaming agent, 16 parts of hollow glass beads and 88 parts of water, wherein the slurry density is 1.44G/cm3。
The low hydration heat activity cementing material comprises the following components in parts by weight: 43 parts of fly ash, 36 parts of slag, 9 parts of superfine expanded perlite and 12 parts of solid nano silicon dioxide.
The preparation method is the same as example 1.
Comparative example 5
The comparative example is a low hydration heat well cementation cement slurry system added with a low hydration heat activity cementing material and a hydrated calcium silicate-polycarboxylic acid ether nano composite early strength agent, and the cement slurry system comprises the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 100 parts of low hydration heat activity cementing material, 5.8 parts of hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, 1 part of fluid loss agent, 0.4 part of dispersing agent, 0.3 part of defoaming agent, 16 parts of hollow glass beads, 83 parts of water and 1.42G/cm of slurry density3。
The low hydration heat activity cementing material comprises the following components in parts by weight: 43 parts of fly ash, 36 parts of slag, 9 parts of superfine expanded perlite and 12 parts of solid nano silicon dioxide.
The preparation method is the same as example 1.
Comparative example 6
The comparative example is a low hydration heat cementing slurry system added with a low hydration heat activity cementing material and a low temperature activator, and comprises the following raw material components in parts by mass: 100 parts of G-grade oil well cement, 100 parts of low-hydration heat-activity cementing material, 4.5 parts of low-temperature activator, 0.7 part of fluid loss agent, 0.5 part of dispersant, 0.4 part of defoamer, 16 parts of hollow glass beads, 85 parts of water, slurryBulk density 1.43g/cm3。
The low hydration heat activity cementing material comprises the following components in parts by weight: 43 parts of fly ash, 36 parts of slag, 9 parts of superfine expanded perlite and 12 parts of solid nano silicon dioxide.
The preparation method is the same as example 1.
Test example 1: influence of different types of auxiliary cementing materials and different addition amounts on hydration heat release and compressive strength of well cementation cement slurry system
The cement slurry systems of the embodiments 1, 2, 3 and 4 are used as test objects, and the hydration temperature rise and the compressive strength of the cement slurry system are tested according to the standard GB/T12959-2008 'cement hydration heat determination method', SY/T6466-2016 'oil well cement performance test method', SY/T6544-2017 'oil well cement performance requirement'. The specific experiments are shown in table 1.
Table 1 compares hydration temperature rise and compressive strength of different types of well cementation cement slurry
According to the detection results in table 1, the early compressive strength of comparative example 1 is high in the low-temperature environment, but the hydration heat release is too large, which inevitably causes the decomposition of the natural gas hydrate. Compared with the prior art, the coal ash and the G-grade oil well cement are mixed in quality, so that although the hydration temperature rise peak value of a cement paste system is reduced and the hydration heat release is less, the early compressive strength of the cement paste system in a low-temperature environment is greatly reduced, the probability of water-gas channeling is increased, and the well cementation construction cost is increased. Compared with the comparative example 2, the early compressive strength of the set cement is obviously improved but still at a lower level, and the peak value of hydration temperature rise of the set cement is higher, so that the set cement is not beneficial to cementing of a hydrate layer. Through orthogonal experiments, the proportion of the fly ash, the slag, the superfine expanded perlite and the solid nano-silica is optimized to form the low hydration heat activity cementing material, and finally the comparative example 4 is formed. The peak value of hydration heat release temperature rise of the cement paste system and the compression strength of the set cement in the comparative example 4 are both between the comparative example 2 and the comparative example 3, and the advantages of the two are achieved, but the compression strength of the cement paste system still has a space for improving. The embodiment 1 and the embodiment 2 fully exploit the potential of the comparative example 4, and enhance the compressive strength while not remarkably improving the peak value of hydration temperature rise. Example 2 compared with example 1, the lower hydration heat activity cementing material is used, and the peak hydration temperature rise and the low-temperature early compressive strength are both larger than those of example 1, which shows that the higher the amount of the low hydration heat activity cementing material is, the lower the peak hydration temperature rise is on the premise of ensuring the compressive strength.
The experiments prove that the addition of the low hydration heat activity cementing material plays an important role in reducing the hydration heat release of a well cementation cement slurry system, but inevitably causes the reduction of the compressive strength, and the early compressive strength level of the set cement under the low temperature curing condition needs to be improved.
Test example 2: influence of hydrated calcium silicate-polycarboxylate ether nano composite early strength agent on hydration heat release and compressive strength of low hydration heat well cementation cement slurry system
The cement slurry systems of the embodiment 1, the comparative example 4, the comparative example 5 and the comparative example 6 are taken as test objects, and the hydration temperature rise and the compressive strength of the cement slurry system are tested according to the standard GB/T12959-2008 'cement hydration heat measuring method', SY/T6466-2016 'oil well cement performance test method' and SY/T6544-2017 'oil well cement performance requirement'. The specific experiments are shown in Table 2.
TABLE 2 influence of hydrated calcium silicate-polycarboxylate ether nano-composite early strength agent on hydration heat release and compressive strength of cement paste system
According to the detection results in table 2, although comparative example 4 and comparative example 5 both use the low hydration heat activity gelled material with the same weight as the grade G oil well cement and are cured at 15 ℃, the compressive strength of comparative example 5 after 24 hours is improved by 96.6%, the compressive strength after 48 hours is improved by 51.6%, and the peak value of hydration temperature rise is improved by only 5.8% due to the use of the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent. Even though the mechanical properties of comparative example 5 are higher than those of comparative example 1 without using a low hydration heat active gelling material, the peak hydration temperature rise is only 60% of that of comparative example 1. Under the condition that the compressive strength is improved by using the same amount of low-temperature activator in both the example 1 and the comparative example 6, the hydrated calcium silicate-polycarboxylate ether nano composite early strength agent still improves the early mechanical property of the cement stone in the example 1 in a low-temperature environment, the hydrated calcium silicate-polycarboxylate ether nano composite early strength agent and the hydrated calcium silicate-polycarboxylate ether nano composite early strength agent are subjected to synergistic hydration at low temperature, the early compressive strength of the cement stone is enhanced, the compressive strength after 24 hours is improved by 135.5%, the compressive strength after 48 hours is improved by 60.6%, and the peak value of hydration temperature rise is only improved by 4.5%.
The experiments all prove that the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent greatly enhances the early compressive strength of the set cement in a low-temperature environment under the condition of not remarkably improving the hydration heat release peak value of a low-hydration heat-well cement slurry system, but the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is used alone, has limited optimization degree on the mechanical property of the set cement, must be matched with a low-temperature activator for use, and realizes the low-heat early strength of the set cement through low-temperature synergistic hydration.
Test example 3: influence of low-temperature activator on hydration heat release and compressive strength of low hydration heat cementing cement slurry system
The well cementation cement slurry systems of the embodiment 1, the comparative example 4, the comparative example 5 and the comparative example 6 are taken as test objects, and the hydration temperature rise and the compressive strength of the well cementation cement slurry system are tested according to the standard GB/T12959-2008 'cement hydration heat measuring method', SY/T6466-2016 'oil well cement performance test method', SY/T6544-2017 'oil well cement performance requirement'. The specific experiments are shown in Table 3.
TABLE 3 Effect of Low temperature activators on hydration exotherm and compressive strength of Cement slurry systems
According to the detection results in table 3, the low-temperature activator has a great influence on the low-temperature early strength of the low-hydration-heat well cementation cement slurry system. As can be seen from comparative example 4 and comparative example 6, the addition of the low-temperature activator enhances the early compressive strength of the comparative example 6 in a low-temperature curing environment, the compressive strength is improved by 55.8% after 24 hours, the compressive strength is improved by 33.8% after 48 hours, the hydration exothermic peak value is slightly improved, and the reduction of the liquid permeability indicates that the cement stone microstructure is more compact. It can be seen from comparative example 5 and example 1 that, under the condition of the same amount of calcium silicate hydrate-polycarboxylate ether nano composite early strength agent, the low-temperature activator can still increase the early mechanical properties of the set cement in example 1 in a low-temperature curing environment on the premise of not greatly increasing the peak value of hydration temperature rise, the low-temperature activator and the low-temperature activator cooperate with each other to increase the efficiency, so that the early compressive strength of the set cement is increased, the compressive strength after 24 hours is increased by 86.7%, the compressive strength after 48 hours is increased by 41.7%, and the peak value of hydration temperature rise is increased by only 2.9%.
The experiments all prove that the low-temperature activator promotes the pozzolanic reaction of the low-hydration-heat-activity cementing material, changes the microstructure of the set cement, increases the compressive strength, but still cannot meet the requirements of a well cementation construction site, and must be matched with the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent for use, so that the mechanical property of the set cement is improved again, the two agents are subjected to low-temperature synergistic hydration, and the purpose of low-heat early strength of the set cement is achieved.
Test example 4: slurry performance test of low-heat early-strength cement slurry system with synergistic effect of low-temperature synergistic hydration
The well cementation cement slurry systems of the embodiments 1, 2 and 3 are taken as test objects, and engineering performances such as density, water loss, thickening time, rheological parameters and the like of the well cementation cement slurry systems are tested according to the standard GB/T12959-2008 'cement hydration heat measuring method', SY/T6466-2016 'oil well cement performance test method', SY/T6544-2017 'oil well cement performance requirement'. Specific experiments are shown in table 4.
TABLE 4 slurry Performance testing of Low Heat early Strength Cement mortar systems with synergistic Low temperature synergistic hydration
According to the detection results in the table 4, the low-heat early-strength cement paste system with the synergistic effect of low-temperature synergistic hydration has the advantages of adjustable density, low water loss, small initial consistency, reasonable thickening time, good rheological property and accordance with the construction requirements of a well cementation site.
In conclusion, all the previous experimental results show that the low-heat early-strength cement slurry system with synergistic effect of low-temperature synergistic hydration can solve a series of problems of excessive hydration heat release, low early compressive strength of cement stones under the low-temperature curing condition and the like of the existing well cementation cement slurry system, has wide application prospect, can be suitable for well cementation of a marine deep water surface layer and a hydrate layer, and lays a solid foundation for the development of marine oil and gas resources.
The above description is only a preferred embodiment of the present invention, but the present invention is not limited to the examples. It will be appreciated by those skilled in the art that changes in this embodiment may be made without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims.
Claims (8)
1. The low-heat early-strength cement paste system with the synergistic effect of low-temperature synergistic hydration is characterized by comprising the following components in parts by weight: 100 parts of oil well cement, 70-100 parts of low-hydration-heat-activity cementing material, 3.2-6.3 parts of hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, 1.8-5.4 parts of low-temperature activator, 0.7-1.3 parts of fluid loss agent, 0.3-0.6 part of dispersing agent, 0.2-1.0 part of defoaming agent, 15-20 parts of hollow glass beads and 60-92 parts of water;
the low-heat early-strength cement paste system with the synergistic effect of the low-temperature synergistic hydration is characterized in that the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent comprises the following components in parts by weight: 8-12 parts of polycarboxylic acid high-efficiency water reducing agent, 8-12 parts of calcium nitrate tetrahydrate, 8-10 parts of sodium metasilicate pentahydrate, 0.4-0.5 part of sodium hydroxide and 62.5-75.6 parts of distilled water, wherein the polyether monomer of the polycarboxylic acid high-efficiency water reducing agent for the calcium silicate hydrate-polycarboxylic acid ether nano composite early strength agent is one or a mixture of alpha-methallyl-omega-methoxyl or omega-hydroxyl poly (ethylene glycol) and prenyloxy poly (ethylene glycol) ether;
the low-heat early-strength cement paste system with synergistic low-temperature synergistic hydration is characterized in that the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is prepared by the following steps: firstly, preparing 20-30% of solution by mass of sodium hydroxide at room temperature, preparing 7-8% of solution by mass of polycarboxylic acid high-efficiency water reducing agent at room temperature, preparing 35-45% of solution by mass of calcium nitrate tetrahydrate in 80-90 ℃ water bath, preparing 18-23% of solution by mass of sodium metasilicate pentahydrate in 80-90 ℃ water bath, cooling the prepared calcium nitrate solution and sodium silicate solution to room temperature after the medicine is completely dissolved, then adjusting the pH value of the polycarboxylic acid high-efficiency water reducing agent solution to 8-10 by using the sodium hydroxide solution, continuously adding the calcium nitrate solution and the sodium silicate solution into the polycarboxylic acid high-efficiency water reducing agent solution at constant speed, adjusting the flow rate of the two solutions, ensuring that the two solutions are added simultaneously within the same time, synchronously filling nitrogen to displace air, stirring at a constant speed of 200-300 rpm under the condition of 20 ℃, continuously monitoring the pH value of the reaction solution, maintaining the pH value of the reaction solution at 11-13 by using a sodium hydroxide solution, stirring the reaction solution at room temperature for 24-36 hours after the calcium nitrate solution and the sodium silicate solution are added, and finally preparing a solution with the mass concentration of 25-30% according to the amount of the added substances to obtain the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent used in the invention, wherein compared with the traditional early strength agent, the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent can greatly improve the strength of the set cement in the early stage of muddy hydration under the low-temperature condition, ensures that the strength of the set cement in the later stage is not reduced, and has better low-temperature early strength performance;
the low-temperature synergistic hydration low-heat early-strength cement slurry system is characterized in that a low-temperature early-strength agent is a mixture formed by sulfate, carbonate and alcohol amine organic matters according to the mass ratio of 1: 1.3-1.7: 0.2-0.5, the mixture is dissolved in water to form a solution with the mass concentration of 40-50%, the sulfate is one of sodium sulfate, potassium sulfate and ammonium sulfate, the carbonate is one of sodium carbonate, potassium carbonate, sodium bicarbonate and potassium bicarbonate, and the alcohol amine organic matters are one of triethanolamine and diethanol monoisopropanolamine;
the low-heat early-strength cement paste system with the synergistic effect of the low-temperature synergistic hydration is characterized in that the low-hydration heat-activity cementing material comprises the following components in parts by weight: 30-60 parts of fly ash, 20-40 parts of slag, 3-12 parts of superfine expanded perlite and 5-25 parts of solid nano silicon dioxide;
the fly ash comprises the following chemical components in 100 parts by mass: 54.4 parts of silicon dioxide, 24.2 parts of aluminum oxide, 5.8 parts of ferric oxide, 5.6 parts of calcium oxide, 2.1 parts of sulfur trioxide, 1-50 mu m of fly ash particle diameter and 2.5-2.6 g/cm of density3The slag comprises the following chemical components in 100 parts by mass: 34.6 parts of calcium oxide, 32.8 parts of silicon dioxide, 10.6 parts of aluminum oxide, 10.2 parts of magnesium oxide and 3.8 parts of sulfur trioxide, wherein the particle size of slag is 1-100 mu m, and the density is 2.8-2.9 g/cm3The chemical components in 100 parts by mass of the superfine expanded perlite are as follows: 72.3 parts of silicon dioxide, 12.1 parts of aluminum oxide, 3.8 parts of potassium oxide, 3.6 parts of sodium oxide and 1.2 parts of calcium oxide, wherein the particle size of the superfine expanded perlite is 1-74 mu m, and the density is 2.2-2.4 g/cm3The particle diameter of the solid nano silicon dioxide is 10-60 nm, and the density is 0.50-1.50 g/cm3The mass content of the silicon dioxide is more than or equal to 90 percent.
2. The low-temperature synergistic low-heat early-strength cement paste system as claimed in claim 1, wherein the development principle and design method of the low-temperature synergistic low-heat early-strength cement paste system are as follows:
(1) according to the hydration heat release rate and the heat release total amount of the oil well cement in the curing period, the dosage of the low hydration heat activity cementing material is definitely used, so as to achieve the purpose of reducing hydration temperature rise of the low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration, the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is used, the nucleation energy of the C-S-H gel phase is reduced to accelerate the silicate hydration reaction, the early compressive strength of the set cement under the low-temperature maintenance condition is enhanced, meanwhile, the low-temperature activator is used for promoting the volcanic ash reaction of the low-hydration-heat-activity cementing material, improving the micro-pore structure of the set cement, optimizing the mechanical property of the set cement, further improving the early compressive strength of the set cement under the low-temperature curing condition, and achieving the purposes of small hydration heat release and low-temperature early strength of the low-heat early-strength cement slurry system with synergistic effect of low-temperature synergistic hydration;
(2) according to the numerical value of the calcium-silicon molar ratio in the oil well cement, the dosage of calcium nitrate tetrahydrate and sodium metasilicate pentahydrate in the calcium silicate hydrate-polycarboxylate ether nano composite early strength agent is determined to prepare the early strength agents with different calcium-silicon ratios, so that the hydration of the oil well cement is accelerated at different speeds, and the early mechanical property of the set cement is enhanced;
(3) according to related industrial standards, the dosage of hollow glass beads, a fluid loss agent, a dispersing agent, a defoaming agent and other materials in the low-heat early-strength cement paste system with synergistic effect of low-temperature synergistic hydration is determined, and the engineering performances of the cement paste system such as density, fluid loss amount, rheological parameters and the like are adjusted to meet the construction requirements of a well cementation site.
3. The low-temperature synergistic low-heat early-strength cement paste system according to claim 1, wherein the fluid loss agent is one or a mixture of two of a vinyl acetate-ethylene crosslinking fluid loss agent and a polymerization fluid loss agent of acrylamide and 2-acrylamide-2-methylpropanesulfonic Acid (AMPS).
4. The low-temperature synergistic low-heat early-strength cement paste system according to claim 1, wherein the dispersant is one of a sulfonated formaldehyde-acetone polycondensate dispersant and a polynaphthalene sulfonate dispersant.
5. The low-temperature synergistic low-heat early-strength cement paste system according to claim 1, wherein the defoamer is one of organic siloxane, polyether and polyether-organic siloxane composite defoamer.
6. The low-temperature synergistic low-heat early-strength cement paste system as claimed in claim 1, wherein the hollow glass beads have a particle size of 50-60 μm and a density of 0.53-0.57 g/cm3The bearing capacity is more than or equal to 40MPa, and the floating rate is more than or equal to 92 percent.
7. The low-temperature synergistic low-heat early-strength cement paste system according to claim 1, wherein the oil well cement is one of oil well class A cement, oil well class C cement and oil well class G cement; the water is one of fresh water, seawater and mineralization degree water.
8. The preparation method of the low-temperature synergistic hydration low-heat early-strength cement paste system according to any one of claims 1 to 7, comprising the following steps:
well cement, a low hydration heat activity cementing material, a fluid loss agent, a dispersing agent and hollow glass beads are uniformly mixed, hydrated calcium silicate-polycarboxylate ether nano composite early strength agent, a low temperature activator, water and a defoaming agent are poured into a stirring slurry cup of a constant speed stirrer, a solid phase material is continuously and uniformly poured into the stirring slurry cup to be mixed with a liquid phase material within 15s at the rotating speed of 4000rmp, then the rotating speed is adjusted to 12000rmp, and the mixture is stirred for 35s, so that the low heat early strength cement slurry system with the synergistic effect of low temperature and hydration can be obtained.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110955569.3A CN113511850A (en) | 2021-08-19 | 2021-08-19 | Low-heat early-strength cement paste system composition with low-temperature synergistic hydration and application |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110955569.3A CN113511850A (en) | 2021-08-19 | 2021-08-19 | Low-heat early-strength cement paste system composition with low-temperature synergistic hydration and application |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113511850A true CN113511850A (en) | 2021-10-19 |
Family
ID=78068301
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110955569.3A Pending CN113511850A (en) | 2021-08-19 | 2021-08-19 | Low-heat early-strength cement paste system composition with low-temperature synergistic hydration and application |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN113511850A (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114014580A (en) * | 2021-11-17 | 2022-02-08 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Early strength antifreezing agent and preparation method thereof |
| CN114198052A (en) * | 2021-11-08 | 2022-03-18 | 中国石油大学(华东) | Method for improving cementing strength of marine natural gas hydrate formation well cementation two-interface |
| CN114350334A (en) * | 2022-01-20 | 2022-04-15 | 嘉华特种水泥股份有限公司 | High-temperature-resistant tough well cementation cement slurry system |
| CN115231862A (en) * | 2022-07-20 | 2022-10-25 | 中国石油大学(华东) | Unconventional oil gas downhole in-situ heating exploitation well cementation material system, composition and application |
| CN115477491A (en) * | 2022-09-26 | 2022-12-16 | 中海石油(中国)有限公司 | Chemical-mechanical method-based superfine early strength agent for low-temperature well cementation and cement slurry |
| CN115819023A (en) * | 2022-12-13 | 2023-03-21 | 中铁广州工程局集团有限公司 | Road drying agent for temporary ascending road and preparation method thereof |
| CN115893893A (en) * | 2022-12-19 | 2023-04-04 | 华南理工大学 | Calcium silicate hydrate seed crystal early strength agent and preparation method thereof |
| CN116003021A (en) * | 2022-11-29 | 2023-04-25 | 南方海洋科学与工程广东省实验室(湛江) | Cement slurry suspension reinforcing agent and cement |
| CN117659971A (en) * | 2024-01-31 | 2024-03-08 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | High-temperature-resistant cement slurry system for dry-hot rock cementing |
Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559981A (en) * | 2015-02-02 | 2015-04-29 | 中国海洋石油总公司 | Low-heat cement slurry capable of preventing gas hydrate from decomposition |
| CN105347716A (en) * | 2015-11-24 | 2016-02-24 | 中国石油大学(华东) | Dispersive chlorine-free low-temperature early-strength agent used for oil well cement and cement mortar including same |
| CN105462571A (en) * | 2015-11-16 | 2016-04-06 | 中国石油大学(华东) | Low-temperature cementing slurry system and composition thereof |
| CN106007545A (en) * | 2016-06-06 | 2016-10-12 | 中国石油集团长城钻探工程有限公司固井公司 | Cement slurry with long-term-integrity cement sheath for heavy-oil thermal-recovery well and preparation method thereof |
| CN106634899A (en) * | 2016-09-22 | 2017-05-10 | 中国石油大学(华东) | A liquid colloid filling low-temperature well-cementing cement mortar system |
| CN106957638A (en) * | 2017-01-20 | 2017-07-18 | 长江大学 | A kind of cement paste for well cementation system |
| CN107337372A (en) * | 2016-12-26 | 2017-11-10 | 江苏苏博特新材料股份有限公司 | A kind of early strength agent based on composite nano materials, its preparation method and its application |
| CN109503017A (en) * | 2018-12-29 | 2019-03-22 | 上海三瑞高分子材料股份有限公司 | A kind of hydrated cementitious enhancer compositions and preparation method thereof |
| CN109609106A (en) * | 2018-12-29 | 2019-04-12 | 上海三瑞高分子材料股份有限公司 | A kind of low temperature mining area oil well cementing early strength agent and preparation method thereof |
| CN109679600A (en) * | 2019-01-23 | 2019-04-26 | 中国石油大学(华东) | Mixed and modified superelevation temperature high-performance well cementing mortar architecture of nano material and preparation method thereof |
| CN110054440A (en) * | 2019-03-14 | 2019-07-26 | 中石油煤层气有限责任公司 | A kind of coal bed gas well cementation low-temperature high-early strength low weight cement slurry |
| CN110423315A (en) * | 2019-08-13 | 2019-11-08 | 重庆三圣实业股份有限公司 | A kind of nanometer of C-S-H gel super instant coagulant and preparation method thereof |
| CN111875315A (en) * | 2020-07-23 | 2020-11-03 | 中国石油天然气集团有限公司 | Ultra-low density cement slurry system for cementing slim hole and preparation method and application thereof |
| CN111908848A (en) * | 2020-08-20 | 2020-11-10 | 中海油田服务股份有限公司 | Cement slurry for well cementation and preparation method and application thereof |
| CN112279974A (en) * | 2020-09-27 | 2021-01-29 | 山西佳维新材料股份有限公司 | Composition for preparing early strength agent, early strength agent and preparation method thereof |
| CN112430003A (en) * | 2020-12-04 | 2021-03-02 | 盐城工学院 | Size-controllable nano composite early strength agent and preparation method thereof |
-
2021
- 2021-08-19 CN CN202110955569.3A patent/CN113511850A/en active Pending
Patent Citations (16)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104559981A (en) * | 2015-02-02 | 2015-04-29 | 中国海洋石油总公司 | Low-heat cement slurry capable of preventing gas hydrate from decomposition |
| CN105462571A (en) * | 2015-11-16 | 2016-04-06 | 中国石油大学(华东) | Low-temperature cementing slurry system and composition thereof |
| CN105347716A (en) * | 2015-11-24 | 2016-02-24 | 中国石油大学(华东) | Dispersive chlorine-free low-temperature early-strength agent used for oil well cement and cement mortar including same |
| CN106007545A (en) * | 2016-06-06 | 2016-10-12 | 中国石油集团长城钻探工程有限公司固井公司 | Cement slurry with long-term-integrity cement sheath for heavy-oil thermal-recovery well and preparation method thereof |
| CN106634899A (en) * | 2016-09-22 | 2017-05-10 | 中国石油大学(华东) | A liquid colloid filling low-temperature well-cementing cement mortar system |
| CN107337372A (en) * | 2016-12-26 | 2017-11-10 | 江苏苏博特新材料股份有限公司 | A kind of early strength agent based on composite nano materials, its preparation method and its application |
| CN106957638A (en) * | 2017-01-20 | 2017-07-18 | 长江大学 | A kind of cement paste for well cementation system |
| CN109609106A (en) * | 2018-12-29 | 2019-04-12 | 上海三瑞高分子材料股份有限公司 | A kind of low temperature mining area oil well cementing early strength agent and preparation method thereof |
| CN109503017A (en) * | 2018-12-29 | 2019-03-22 | 上海三瑞高分子材料股份有限公司 | A kind of hydrated cementitious enhancer compositions and preparation method thereof |
| CN109679600A (en) * | 2019-01-23 | 2019-04-26 | 中国石油大学(华东) | Mixed and modified superelevation temperature high-performance well cementing mortar architecture of nano material and preparation method thereof |
| CN110054440A (en) * | 2019-03-14 | 2019-07-26 | 中石油煤层气有限责任公司 | A kind of coal bed gas well cementation low-temperature high-early strength low weight cement slurry |
| CN110423315A (en) * | 2019-08-13 | 2019-11-08 | 重庆三圣实业股份有限公司 | A kind of nanometer of C-S-H gel super instant coagulant and preparation method thereof |
| CN111875315A (en) * | 2020-07-23 | 2020-11-03 | 中国石油天然气集团有限公司 | Ultra-low density cement slurry system for cementing slim hole and preparation method and application thereof |
| CN111908848A (en) * | 2020-08-20 | 2020-11-10 | 中海油田服务股份有限公司 | Cement slurry for well cementation and preparation method and application thereof |
| CN112279974A (en) * | 2020-09-27 | 2021-01-29 | 山西佳维新材料股份有限公司 | Composition for preparing early strength agent, early strength agent and preparation method thereof |
| CN112430003A (en) * | 2020-12-04 | 2021-03-02 | 盐城工学院 | Size-controllable nano composite early strength agent and preparation method thereof |
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114198052A (en) * | 2021-11-08 | 2022-03-18 | 中国石油大学(华东) | Method for improving cementing strength of marine natural gas hydrate formation well cementation two-interface |
| CN114014580B (en) * | 2021-11-17 | 2023-02-24 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Early-strength antifreezing agent and preparation method thereof |
| CN114014580A (en) * | 2021-11-17 | 2022-02-08 | 中国铁道科学研究院集团有限公司铁道建筑研究所 | Early strength antifreezing agent and preparation method thereof |
| CN114350334A (en) * | 2022-01-20 | 2022-04-15 | 嘉华特种水泥股份有限公司 | High-temperature-resistant tough well cementation cement slurry system |
| CN114350334B (en) * | 2022-01-20 | 2022-12-16 | 嘉华特种水泥股份有限公司 | High-temperature-resistant tough well cementation cement slurry system |
| CN115231862A (en) * | 2022-07-20 | 2022-10-25 | 中国石油大学(华东) | Unconventional oil gas downhole in-situ heating exploitation well cementation material system, composition and application |
| CN115477491A (en) * | 2022-09-26 | 2022-12-16 | 中海石油(中国)有限公司 | Chemical-mechanical method-based superfine early strength agent for low-temperature well cementation and cement slurry |
| CN115477491B (en) * | 2022-09-26 | 2023-12-01 | 中海石油(中国)有限公司 | Superfine early strength agent and cement slurry for low-temperature well cementation based on chemical-mechanical method |
| CN116003021A (en) * | 2022-11-29 | 2023-04-25 | 南方海洋科学与工程广东省实验室(湛江) | Cement slurry suspension reinforcing agent and cement |
| CN115819023A (en) * | 2022-12-13 | 2023-03-21 | 中铁广州工程局集团有限公司 | Road drying agent for temporary ascending road and preparation method thereof |
| CN115819023B (en) * | 2022-12-13 | 2023-11-03 | 中铁广州工程局集团有限公司 | Road desiccant for temporary mountain road and preparation method thereof |
| CN115893893A (en) * | 2022-12-19 | 2023-04-04 | 华南理工大学 | Calcium silicate hydrate seed crystal early strength agent and preparation method thereof |
| CN117659971A (en) * | 2024-01-31 | 2024-03-08 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | High-temperature-resistant cement slurry system for dry-hot rock cementing |
| CN117659971B (en) * | 2024-01-31 | 2024-04-16 | 山东省地质矿产勘查开发局第二水文地质工程地质大队(山东省鲁北地质工程勘察院) | High-temperature-resistant cement slurry system for dry-hot rock cementing |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN113511850A (en) | Low-heat early-strength cement paste system composition with low-temperature synergistic hydration and application | |
| CN105462571B (en) | A kind of low temperature well cementing mortar architecture and composition | |
| RU2464408C2 (en) | Cement compositions with low-temperature hydration and their applications | |
| US10793764B2 (en) | Low density cementitious compositions for use at low and high temperatures | |
| CA2407365A1 (en) | Storable water-microsphere suspensions for use in well cements and methods | |
| EA002938B1 (en) | Cementation product and use for cementing oil wells or the like | |
| CN110304872B (en) | Nano modified cement-based underwater non-dispersible material and preparation method thereof | |
| CN103482926A (en) | Cement-based no-shrinkage grouting material | |
| CN112592143B (en) | Clay-slag-based harbor seismic strengthening mineral grouting material and preparation method thereof | |
| CN105062441A (en) | Low-density micro-expansion early-strength channeling-preventive oil well cement slurry and preparation method thereof | |
| CN112624795B (en) | Desulfurized gypsum-based foam concrete and preparation method and application thereof | |
| CN107987813B (en) | Polymer supported coagulant, preparation method thereof and cement paste | |
| CN115093150A (en) | Modifier for improving setting and hardening performance and carbonization resistance of phosphogypsum-based cementing material | |
| Cadix et al. | Cementing additives | |
| CN111056764B (en) | Efficient solid waste base gelation activity excitant | |
| CN115246730B (en) | Water-based epoxy resin and microorganism modified superfine cement-based self-repairing waterproof plugging material | |
| CN114605121A (en) | Tungsten tailing autoclaved aerated concrete and preparation method thereof | |
| CN114380568A (en) | Low-temperature early-strength high-toughness well cementing material | |
| CN112707709B (en) | High-strength low-hydration-heat low-density cement slurry system for well cementation and preparation method thereof | |
| CN111848013A (en) | Special gas well cement slurry special for combustible ice exploitation | |
| CN113213785B (en) | High-strength low-hydration heat cementing cement and preparation method thereof | |
| CN113429163A (en) | Cement composition for well cementation operation, cement slurry system and preparation method thereof | |
| Fangfang et al. | Effect of different activators on rheological and strength properties of fly ash-based filling cementitious materials | |
| CN112390659A (en) | Cement paste system | |
| CN111704412A (en) | Lightweight aggregate self-leveling material, preparation method and construction method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211019 |