CN105295875A - Heat insulation cement paste and preparation method thereof - Google Patents
Heat insulation cement paste and preparation method thereof Download PDFInfo
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- CN105295875A CN105295875A CN201510636761.0A CN201510636761A CN105295875A CN 105295875 A CN105295875 A CN 105295875A CN 201510636761 A CN201510636761 A CN 201510636761A CN 105295875 A CN105295875 A CN 105295875A
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- thermal insulation
- insulation cement
- cement slurry
- heat insulation
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K8/00—Compositions for drilling of boreholes or wells; Compositions for treating boreholes or wells, e.g. for completion or for remedial operations
- C09K8/42—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
- 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
- C09K8/487—Fluid loss control additives; Additives for reducing or preventing circulation loss
-
- 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
- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00724—Uses not provided for elsewhere in C04B2111/00 in mining operations, e.g. for backfilling; in making tunnels or galleries
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/28—Friction or drag reducing additives
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K2208/00—Aspects relating to compositions of drilling or well treatment fluids
- C09K2208/32—Anticorrosion additives
Abstract
The invention relates to the technical field of cement paste for well cementation in the field of drilling engineering, in particular to a heat insulation cement paste and a preparation method thereof. The heat insulation cement paste is prepared from cement, a heat insulation material, quartz sand, silica fume, an early strength agent, an expanding agent, an additive and water. The heat insulation cement paste obtained by the invention is stable in performance, low in heat conductivity and small in heat loss, and has stronger heat insulation effect; the difficult problems that when a heavy oil thermal recovery well carries out injecting steam production, heat dissipation of a cement sheath is serious, energy source waste is huge and the production cost is high are solved; meanwhile, by adding the heat insulation material, the heat insulation cement paste has good compressive strength, good heat insulation and corrosion resistance as well as fire and alkali resistance, and can be popularized and applied in the heavy oil thermal recovery well on a large scale.
Description
Technical field
the present invention relates to drilling engineering field cement paste for well cementation technical field, is a kind of thermal insulation cement slurry and preparation method thereof.
Background technology
china so world wide in, the quantity of heavy oil wells occupies considerable quantity.The reserves of China's viscous crude occupy the 7th in the world, have found that there is the heavy crude reservoir block of 9 big-and-middle-sized oil bearing basins and One's name is legion so far.Up to the present, exploitation via steam injection remains the main mining type of heavy oil wells.Ortho-water mud thermal conductivity is higher, and thermosteresis is huge, considerably increases cost of winning.Meanwhile, country vigorously advocates energy-saving and emission-reduction, development green economy, and energy-conserving and environment-protective are requirements of the times of New Times Economic development.Current development green economy has become an important trend in the world, and green economy has become whole world common recognition.Although each technical parameter of existing heavy oil wells cementing slurry and mechanical property can meet cementing technology requirement, cement mantle thermal conductivity cannot be solved high, the problem that heat leakage is serious.
Summary of the invention
the invention provides a kind of thermal insulation cement slurry, overcome the deficiency of above-mentioned prior art, the problem that when it effectively can solve thick oil thermal extraction exploitation via steam injection, cement mantle thermal conductivity is high, heat leakage is serious.
one of technical scheme of the present invention is realized by following measures: a kind of thermal insulation cement slurry, containing cement 100 parts, heat preserving and insulating material 5 parts to 20 parts, quartz sand 30 parts to 60 parts, SILICA FUME 2 parts to 10 parts, hardening accelerator 2 parts to 5 parts, swelling agent 3 parts to 5 parts, additive 3 parts to 10.5 parts, 45 parts to 60 parts, water.
here is the further optimization and/or improvements to one of foregoing invention technical scheme:
above-mentioned thermal insulation cement slurry obtains as follows: the cement of aequum, lagging material, quartz sand, SILICA FUME, hardening accelerator, swelling agent, additive and water are mixed and obtain thermal insulation cement slurry.
above-mentioned additive comprises water retaining, flow improver, setting accelerator and defoamer; The mass ratio of water retaining, flow improver, setting accelerator and defoamer is 2 to 5:0.5 to 1.0:0 to 4:0.5.
above-mentioned water retaining is more than one of quaternary high-molecular copolymer, polyvinyl alcohol and acrylamide group methyl sulphonic acid copolymer; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and setting accelerator is more than one of Sulfates, Tai-Ace S 150 and SODIUMNITRATE composition; Or/and, defoamer be phosphate mixture and glycerin polyether tensio-active agent more than one.
the density of above-mentioned thermal insulation cement slurry is 1.90g/cm
3
to 2.0g/cm
3
; Or/and quartz sand particle diameter is 125 microns to 160 microns, in quartz sand, the mass percentage of silicon-dioxide is 90% to 98%; Or/and SILICA FUME particle diameter is 0.15 micron to 0.5 micron, in SILICA FUME, the mass percentage of silicon-dioxide is 90% to 98%.
above-mentioned hardening accelerator is more than one of calcium sulfate, organic acid salt and silico-aluminate; Or/and, swelling agent be calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture and inorganic salt more than one; Or/and heat preserving and insulating material is more than one in asbestos wool, silica fibre, glass fibre, diatomite, pearlstone and vermiculite.
two of technical scheme of the present invention is realized by following measures: a kind of preparation method of thermal insulation cement slurry, carries out in the steps below: the cement of aequum, lagging material, quartz sand, SILICA FUME, hardening accelerator, swelling agent, additive and water are mixed and obtain thermal insulation cement slurry.
here is the further optimization and/or improvements to foregoing invention technical scheme two:
above-mentioned additive comprises water retaining, flow improver, setting accelerator and defoamer; The mass ratio of water retaining, flow improver, setting accelerator and defoamer is 2 to 5:0.5 to 1.0:0 to 4:0.5.
above-mentioned water retaining is more than one of quaternary high-molecular copolymer, polyvinyl alcohol and acrylamide group methyl sulphonic acid copolymer; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and setting accelerator is more than one of Sulfates, Tai-Ace S 150 and SODIUMNITRATE composition; Or/and, defoamer be phosphate mixture and glycerin polyether tensio-active agent more than one.
the density of above-mentioned thermal insulation cement slurry is 1.90g/cm
3
to 2.0g/cm
3
; Or/and quartz sand particle diameter is 125 microns to 160 microns, in quartz sand, the mass percentage of silicon-dioxide is 90% to 98%; Or/and SILICA FUME particle diameter is 0.15 micron to 0.5 micron, in SILICA FUME, the mass percentage of silicon-dioxide is 90% to 98%; Or/and hardening accelerator is more than one of calcium sulfate, organic acid salt and silico-aluminate; Or/and, swelling agent be calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture and inorganic salt more than one; Or/and heat preserving and insulating material is more than one in asbestos wool, silica fibre, glass fibre, diatomite, pearlstone and vermiculite.
the thermal insulation cement slurry stable performance that the present invention obtains, by adding heat preserving and insulating material or composite body in grout, reaches the thermal conductivity reducing cement mantle.This heat preserving and insulating material has good tensile strength and good thermal insulation and non-corrosibility, there is fire-resistant, alkaline resistance properties, greatly reduce thick oil thermal extraction steam injection and exploit the energy used, extend thermo-efficiency, reduce heat-energy losses in thick oil thermal extraction, save energy, minimizing energy consumption.
Embodiment
embodiment 1, this thermal insulation cement slurry raw materials by weight portion contains cement 100 parts, heat preserving and insulating material 5 parts to 20 parts, quartz sand 30 parts to 60 parts, SILICA FUME 2 parts to 10 parts, hardening accelerator 2 parts to 5 parts, swelling agent 3 parts to 5 parts, additive 3 parts to 10.5 parts, 45 parts to 60 parts, water.In the thermal insulation cement slurry that the present invention obtains, liquid gray scale is 54% to 65%, and liquid gray scale is the per-cent that additive and batched water account for cement quality.
embodiment 2, this thermal insulation cement slurry raw materials by weight portion contains cement 100 parts, heat preserving and insulating material 5 parts or 20 parts, quartz sand 30 parts or 60 parts, SILICA FUME 2 parts or 10 parts, hardening accelerator 2 parts or 5 parts, swelling agent 3 parts or 5 parts, additive 3 parts or 10.5 parts, 45 parts, water or 60 parts.
embodiment 3, this thermal insulation cement slurry obtains by following preparation method: the cement of aequum, lagging material, quartz sand, SILICA FUME, swelling agent, additive and water are mixed and obtain thermal insulation cement slurry.The present invention obtains thermal insulation cement slurry by adding lagging material, swelling agent, the quartz sand of different-grain diameter and SILICA FUME, and it is chemical pre-stressed that swelling agent makes cement volumetric expansion produce, and strengthens annular space and the bond on sleeve pipe, stratum, effectively closes micro-annulus.The lagging material added can reduce the thermal conductivity of Behavior of Hardened Cement Paste, improve ultimate compression strength, can thick oil thermal extraction well cementation in large-scale promotion application.
embodiment 4, as the optimization of above-described embodiment, thermal insulation cement slurry obtains as follows: the cement of aequum, lagging material, quartz sand, SILICA FUME, hardening accelerator, swelling agent, additive and water are mixed and obtain thermal insulation cement slurry.
embodiment 5, as the optimization of above-described embodiment, additive comprises water retaining, flow improver, setting accelerator and defoamer; The mass ratio of water retaining, flow improver, setting accelerator and defoamer is 2 to 5:0.5 to 1.0:0 to 4:0.5.
embodiment 6, as the optimization of above-described embodiment, water retaining is more than one of quaternary high-molecular copolymer, polyvinyl alcohol and acrylamide group methyl sulphonic acid copolymer; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and setting accelerator is more than one of Sulfates, Tai-Ace S 150 and SODIUMNITRATE composition; Or/and, defoamer be phosphate mixture and glycerin polyether tensio-active agent more than one.
embodiment 7, as the optimization of above-described embodiment, the density of thermal insulation cement slurry is 1.90g/cm
3
to 2.0g/cm
3
; Or/and quartz sand particle diameter is 125 microns to 160 microns, in quartz sand, the mass percentage of silicon-dioxide is 90% to 98%; Or/and SILICA FUME particle diameter is 0.15 micron to 0.5 micron, in SILICA FUME, the mass percentage of silicon-dioxide is 90% to 98%.
embodiment 8, as the optimization of above-described embodiment, hardening accelerator is more than one of calcium sulfate, organic acid salt and silico-aluminate; Or/and, swelling agent be calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture and inorganic salt more than one; Or/and heat preserving and insulating material is more than one in asbestos wool, silica fibre, glass fibre, diatomite, pearlstone and vermiculite.
embodiment 9, this thermal insulation cement slurry raw materials by weight portion contains cement 100 parts, heat preserving and insulating material 5 parts, quartz sand 30 parts, SILICA FUME 4 parts, hardening accelerator 4 parts, swelling agent 3 parts, water retaining 3 parts, flow improver 0.8 part, setting accelerator 3 parts, defoamer 0.5 part, 50.5 parts, water.The liquid gray scale of the thermal insulation cement slurry of the present invention that embodiment 9 obtains is 54%, and liquid gray scale is the per-cent that additive and batched water account for cement quality, and additive is water retaining, flow improver, setting accelerator and defoamer.The density of the thermal insulation cement slurry of the present invention obtained by embodiment 9 formula is 1.90g/cm
3
.
embodiment 10, this thermal insulation cement slurry raw materials by weight portion contains cement 100 parts, heat preserving and insulating material 15 parts, quartz sand 40 parts, SILICA FUME 4 parts, hardening accelerator 4 parts, water retaining 5 parts, flow improver 1 part, setting accelerator 2 parts, defoamer 0.5 part, 56.5 parts, water.The liquid gray scale of the thermal insulation cement slurry of the present invention that embodiment 10 obtains is 62%, and liquid gray scale is the per-cent that additive and batched water account for cement quality, and additive is water retaining, flow improver, setting accelerator and defoamer.The density of the thermal insulation cement slurry of the present invention obtained by embodiment 10 formula is 1.95g/cm
3
.
embodiment 11, this thermal insulation cement slurry raw materials by weight portion contains cement 100 parts, heat preserving and insulating material 20 parts, quartz sand 60 parts, SILICA FUME 3 parts, hardening accelerator 3 parts, swelling agent 3 parts, water retaining 1 part, flow improver 1 part, setting accelerator 1 part, defoamer 0.5 part, 57.5 parts, water.The liquid gray scale of the thermal insulation cement slurry of the present invention that embodiment 11 obtains is 60%, and liquid gray scale is the per-cent that additive and batched water account for cement quality, and additive is water retaining, flow improver, setting accelerator and defoamer.The density of the thermal insulation cement slurry of the present invention obtained by embodiment 11 formula is 2.0g/cm
3
.
the heat insulating mud of the present invention obtained by embodiment 9, embodiment 10 and embodiment 11 and the performance perameter of prior art grout are shown in Table 1; As can be seen from Table 1; Thermal insulation cement that the present invention obtains slurry has reduction compared with the API dehydration of prior art grout and thermal conductivity, ultimate compression strength under rate of expansion, normal temperature and the ultimate compression strength of temperature at 350 DEG C are all improved, the stable performance compared with prior art grout of thermal insulation cement slurry that the present invention obtains is described, fluid loss is lower, Behavior of Hardened Cement Paste is high temperature resistant, reduces hot loss of energy in thick oil thermal extraction by the thermal conductivity reducing cement mantle; The thermal insulation cement slurry thermal conductivity that the present invention simultaneously obtains is low, and at 350 DEG C, ultimate compression strength is high with temperature at normal temperatures, good heat insulating, can effectively keep temperature in wellbore not scatter and disappear.
the present invention compared with prior art has the following advantages:
(1) add heat preserving and insulating material in grout of the present invention, because heat preserving and insulating material has lower thermal conductivity, it is dispersed in grout uniformly, and slurry radiating efficiency is reduced, and cement mantle has heat insulating effect simultaneously.
add active material SILICA FUME in grout of the present invention, the stability and the hydration reaction that improve grout are active, and Behavior of Hardened Cement Paste early strength plays faster, and Behavior of Hardened Cement Paste ultimate compression strength is larger.
the swelling agent added in grout of the present invention is the double effect material expanded with hardening period that expands the plasticity phase, and abundant compensation water mudstone volumetric shrinkage, improves cement stone interface cementing power.
the various performance perameters of grout of the present invention all can meet cementing technology requirement, and add heat preserving and insulating material and make solid load higher, Behavior of Hardened Cement Paste compactness is strong, intensity is large, cementing power is stronger.
grout of the present invention makes that Behavior of Hardened Cement Paste thermal conductivity is low, thermosteresis is little, good to Behavior of Hardened Cement Paste annular space heat insulation effect, greatly reduce cost of winning.
the thermal insulation cement slurry that the present invention obtains extends thermo-efficiency, improves oil recovery factor, reduces the energy consumption in thermal process, not only cost-saving, and decreases environmental pollution.
in sum, the thermal insulation cement slurry stable performance that the present invention obtains, thermal conductivity is low, thermosteresis is little, there is stronger heat insulating effect, when effectively solving thick oil thermal extraction exploitation via steam injection, cement mantle heat leakage is serious, energy dissipation is huge, the difficult problem that cost of winning is high, simultaneously thermal insulation cement of the present invention is starched have good ultimate compression strength and good thermal insulation and non-corrosibility adding of lagging material, there is fire-resistant, alkaline resistance properties, can thick oil thermal extraction well cementation in large-scale promotion application.
above technical characteristic constitutes embodiments of the invention, and it has stronger adaptability and implementation result, can increase and decrease non-essential technical characteristic according to actual needs, meet the demand of different situations.
Claims (10)
1. a thermal insulation cement slurry, is characterized in that by weight containing cement 100 parts, heat preserving and insulating material 5 parts to 20 parts, quartz sand 30 parts to 60 parts, SILICA FUME 2 parts to 10 parts, hardening accelerator 2 parts to 5 parts, swelling agent 3 parts to 5 parts, additive 3 parts to 10.5 parts, 45 parts to 60 parts, water.
2. thermal insulation cement slurry according to claim 1, is characterized in that obtaining as follows: the cement of aequum, lagging material, quartz sand, SILICA FUME, hardening accelerator, swelling agent, additive and water are mixed and obtain thermal insulation cement slurry.
3. a kind of thermal insulation cement slurry according to claim 1 and 2, is characterized in that additive comprises water retaining, flow improver, setting accelerator and defoamer; The mass ratio of water retaining, flow improver, setting accelerator and defoamer is 2 to 5:0.5 to 1.0:0 to 4:0.5.
4. thermal insulation cement according to claim 3 slurry, is characterized in that water retaining is more than one of quaternary high-molecular copolymer, polyvinyl alcohol and acrylamide group methyl sulphonic acid copolymer; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and setting accelerator is more than one of Sulfates, Tai-Ace S 150 and SODIUMNITRATE composition; Or/and, defoamer be phosphate mixture and glycerin polyether tensio-active agent more than one.
5. a kind of thermal insulation cement slurry according to claim 1 or 2 or 3 or 4, is characterized in that the density that thermal insulation cement is starched is 1.90g/cm
3to 2.0g/cm
3; Or/and quartz sand particle diameter is 125 microns to 160 microns, in quartz sand, the mass percentage of silicon-dioxide is 90% to 98%; Or/and SILICA FUME particle diameter is 0.15 micron to 0.5 micron, in SILICA FUME, the mass percentage of silicon-dioxide is 90% to 98%.
6. the thermal insulation cement slurry according to claim 1 or 2 or 3 or 4 or 5, is characterized in that hardening accelerator is more than one of calcium sulfate, organic acid salt and silico-aluminate; Or/and, swelling agent be calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture and inorganic salt more than one; Or/and heat preserving and insulating material is more than one in asbestos wool, silica fibre, glass fibre, diatomite, pearlstone and vermiculite.
7. according to claim 1 thermal insulation cement slurry a preparation method, it is characterized in that carrying out in the steps below: the cement of aequum, lagging material, quartz sand, SILICA FUME, hardening accelerator, swelling agent, additive and water are mixed obtain thermal insulation cement slurry.
8. the preparation method of thermal insulation cement slurry according to claim 7, is characterized in that additive comprises water retaining, flow improver, setting accelerator and defoamer; The mass ratio of water retaining, flow improver, setting accelerator and defoamer is 2 to 5:0.5 to 1.0:0 to 4:0.5.
9. the preparation method of thermal insulation cement according to claim 8 slurry, is characterized in that water retaining is more than one of quaternary high-molecular copolymer, polyvinyl alcohol and acrylamide group methyl sulphonic acid copolymer; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and setting accelerator is more than one of Sulfates, Tai-Ace S 150 and SODIUMNITRATE composition; Or/and, defoamer be phosphate mixture and glycerin polyether tensio-active agent more than one.
10. the preparation method of the thermal insulation cement slurry according to claim 7 or 8 or 9, is characterized in that the density that thermal insulation cement is starched is 1.90g/cm
3to 2.0g/cm
3; Or/and quartz sand particle diameter is 125 microns to 160 microns, in quartz sand, the mass percentage of silicon-dioxide is 90% to 98%; Or/and SILICA FUME particle diameter is 0.15 micron to 0.5 micron, in SILICA FUME, the mass percentage of silicon-dioxide is 90% to 98%; Or/and hardening accelerator is more than one of calcium sulfate, organic acid salt and silico-aluminate; Or/and, swelling agent be calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture and inorganic salt more than one; Or/and heat preserving and insulating material is more than one in asbestos wool, silica fibre, glass fibre, diatomite, pearlstone and vermiculite.
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Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105948578A (en) * | 2016-04-25 | 2016-09-21 | 苏州能华节能环保科技有限公司 | Energy-saving and environmentally friendly material used in building and preparation method thereof |
| CN107418533A (en) * | 2017-04-18 | 2017-12-01 | 中国石油化工股份有限公司 | A kind of thermal production well mounting medium, sealing slurry and molding method |
| CN107748248A (en) * | 2017-11-21 | 2018-03-02 | 淄博职业学院 | Anti-pressure glass fibre vermiculite prepares the well cementation test block performance test of oil well water-impervious |
| CN108298902A (en) * | 2018-02-02 | 2018-07-20 | 中国石油天然气集团有限公司 | A kind of high temperature resistant silicate grout and preparation method thereof |
| CN112321219A (en) * | 2020-12-10 | 2021-02-05 | 嘉华特种水泥股份有限公司 | Heat-preservation well cementation cement system for dry hot rock production well |
| CN114685125A (en) * | 2020-12-25 | 2022-07-01 | 中石化石油工程技术服务有限公司 | Novel high-temperature-resistant cement slurry system for heavy oil thermal production well |
| CN115231869A (en) * | 2022-09-19 | 2022-10-25 | 天津中海油服化学有限公司 | Thick oil thermal recovery cement slurry capable of resisting high temperature of 350 ℃ and not declining |
| CN115403287A (en) * | 2022-08-26 | 2022-11-29 | 安徽海螺制剂工程技术有限公司 | Raw material mineralizer doped with 2-acrylamido-2-methylpropanesulfonic acid and preparation method thereof |
| CN115925329A (en) * | 2021-09-23 | 2023-04-07 | 新奥科技发展有限公司 | Well cementation cement slurry and preparation method thereof |
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