CN105238376A - Elastic anti-channeling cement slurry and preparation method thereof - Google Patents
Elastic anti-channeling cement slurry and preparation method thereof Download PDFInfo
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- CN105238376A CN105238376A CN201510636763.XA CN201510636763A CN105238376A CN 105238376 A CN105238376 A CN 105238376A CN 201510636763 A CN201510636763 A CN 201510636763A CN 105238376 A CN105238376 A CN 105238376A
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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
- C09K8/493—Additives for reducing or preventing gas migration
-
- 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
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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
- C09K8/426—Compositions for cementing, e.g. for cementing casings into boreholes; Compositions for plugging, e.g. for killing wells for plugging
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- 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
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- Chemical Kinetics & Catalysis (AREA)
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention relates to the technical field of cement slurry for well cementation, and discloses an elastic anti-channeling cement slurry and a preparation method thereof. The elastic anti-channeling cement slurry is composed of the following raw materials: cement, elastic materials, coarse silicon sand, silicon powder, fine silicon sand, an expanding agent, additives, and water. The provided elastic anti-channeling cement slurry has the advantages of stable property, low water loss, and strong anti-gas-channeling and anti-water-invasion performances, is capable of effectively inhibiting the high pressure oil gas layer and active water layer so as to prevent gas and water channeling in reservoir, and solves the technical problem that the well cementation is very difficult in the reservoir where the water and gas channeling is severe. At the same time, the obtained elastic anti-channeling cement slurry also has the advantages of low Young modulus, high tensile strength, large cementing strength, and slightly expanded volume, is capable of improving the quality of cementing on the cement-formation interface, meets the requirements of multiple large-scale fracturing exploitations, and obtains high output of oil and gas flow in the reservoir, where oil, gas, and water are active.
Description
Technical field
the present invention relates to cement paste for well cementation technical field, is a kind of elasticity leakage-proof mud and preparation method thereof.
Background technology
oil, gas, water breakthrough are one of great difficult problems of facing of well cementation interface; if Inter-zonal packing is bad, high pressure zone fluid scurries into low pressure layer, causes loss and the waste of hydrocarbon resources; simultaneously because fluid communication causes well cementation second interface weak bond, grave danger is caused to production capacity and environment protection.Because Behavior of Hardened Cement Paste enbrittles, in the production testing operation process such as follow-up perforation, big-frac treatment of Oil/gas Well, Behavior of Hardened Cement Paste breaks and causes tiny crack to produce, and particularly thin, the end circle water layer of zone of interest enlivens block, often cause water layer to be communicated with oil reservoir, have a strong impact on exploitation effect.Therefore, grout has good anti-channeling ability, Behavior of Hardened Cement Paste has elasticity (ability of opposing stress deformation), microdilatancy performance becomes the important measures solving this well cementation difficult problem.
existing grout technology is single to occurring that oil gas water breakthrough, cement mantle are easy to the solution route of splintering problem in perforation, fracturing process simultaneously.Latex-cement slurry is as the technical way of anti-channeling, under guarantee meets the prerequisite of cementing technology requirement, although have certain effect to the control of oil gas water breakthrough, but Behavior of Hardened Cement Paste splitting resistance, wellbore integrity is kept to be difficult to solve, and it is less to improve the application of Behavior of Hardened Cement Paste elastic mortar architecture, main dependence added the impact work that filamentary material improves Behavior of Hardened Cement Paste in the past, opposing stress deformation limited efficiency, the hard brittleness problems of Behavior of Hardened Cement Paste, oil gas water breakthrough problem can not get effective solution, special in oil, gas, water enlivens oil time well cementation in stratum, gas, the easy channelling of water causes well cementation second interface weak bond, Behavior of Hardened Cement Paste high fragility (high Young's modulus), can not meet the requirement of perforation and big-frac treatment exploitation.
Summary of the invention
the invention provides a kind of elasticity leakage-proof mud and preparation method thereof, overcome the deficiency of above-mentioned prior art, it effectively can solve existing grout oil, gas, the easy channelling of water when oil, gas, water enliven stratum well cementation and cause second interface weak bond of cementing the well, Behavior of Hardened Cement Paste high fragility, can not meet the problem of perforation and big-frac treatment exploitation requirement.
one of technical scheme of the present invention is realized by following measures: a kind of elasticity leakage-proof mud, and raw materials by weight portion contains cement 100 parts, resilient material 15 parts to 40 parts, thick silica sand 40 parts to 65 parts, silica flour 20 parts to 30 parts, thin silica sand 5 parts to 10 parts, swelling agent 3 parts to 6 parts, additive 17.7 parts to 40.5 parts, 30 parts to 45 parts, water.
here is the further optimization and/or improvements to one of foregoing invention technical scheme:
above-mentioned elasticity leakage-proof mud obtains as follows: the cement of aequum, resilient material, thick silica sand, silica flour, thin silica sand, additive and water are obtained elasticity leakage-proof mud after mixing.
above-mentioned additive comprises latex, flow improver, retardant, suspension agent and defoamer; The mass ratio of latex, flow improver, retardant, suspension agent and defoamer is that 15 to 30:2 to 5:0 to 4:0.2 is to 1.0:0.5.
above-mentioned latex is be applicable to non-ionic type in oil well cement paste or cationic latex or styrene-butadiene latex; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and retardant is calglucon liquid or flucoheptanoate liquid or carboxy phosphonic acid salt composite or organic acid; Or/and suspension agent is organic polymer material polymkeric substance; Or/and defoamer is more than one in dimethylsilane, silicone oil, organo-siloxane and phosphate mixture.
the density of above-mentioned elasticity leakage-proof mud is 1.60g/cm
3
to 1.90g/cm
3
; Or/and the particle diameter of thick silica sand is 480 μm to 655 μm, SiO in thick silica sand
2
mass percentage be 90% to 98%; Or/and the particle diameter of silica flour is 4 μm to 9 μm, SiO in silica flour
2
mass percentage be 90% to 98%; Or/and the particle diameter of thin silica sand is 16 μm to 38 μm, SiO in thin silica sand
2
mass percentage be 90% to 98%.
above-mentioned swelling agent is more than one in calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture, inorganic salt, alkalimetal oxide and rubber powder; Or/and resilient material is more than one in resin, rubber, fats polymkeric substance, fiber-like, Poly Propylene Wax, latex and synthetic macromolecule.
two of technical scheme of the present invention is realized by following measures: a kind of preparation method of elasticity leakage-proof mud, carries out in the steps below: the cement of aequum, resilient material, thick silica sand, silica flour, thin silica sand, additive and water are obtained elasticity leakage-proof mud after mixing.
here is the further optimization and/or improvements to foregoing invention technical scheme two:
above-mentioned additive comprises latex, flow improver, retardant, suspension agent and defoamer; The mass ratio of latex, flow improver, retardant, suspension agent and defoamer is that 15 to 30:2 to 5:0 to 4:0.2 is to 1.0:0.5.
above-mentioned latex is be applicable to non-ionic type in oil well cement paste or cationic latex or styrene-butadiene latex; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and retardant is calglucon liquid or flucoheptanoate liquid or carboxy phosphonic acid salt composite or organic acid; Or/and suspension agent is organic polymer material polymkeric substance; Or/and defoamer is more than one in dimethylsilane, silicone oil, organo-siloxane and phosphate mixture.
the density of above-mentioned elasticity leakage-proof mud is 1.60g/cm
3
to 1.90g/cm
3
; Or/and the particle diameter of thick silica sand is 480 μm to 655 μm, SiO in thick silica sand
2
mass percentage be 90% to 98%; Or/and the particle diameter of silica flour is 4 μm to 9 μm, SiO in silica flour
2
mass percentage be 90% to 98%; Or/and the particle diameter of thin silica sand is 16 μm to 38 μm, SiO in thin silica sand
2
mass percentage be 90% to 98%; Or/and swelling agent is more than one in calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture, inorganic salt, alkalimetal oxide and rubber powder; Or/and resilient material is more than one in resin, rubber, fats polymkeric substance, fiber-like, Poly Propylene Wax, latex and synthetic macromolecule.
the elasticity leakage-proof mud stable performance that the present invention obtains, fluid loss is lower, has stronger anti-gas channeling ability and water resistant to invade ability, can effectively suppress high-pressure oil-gas layer, enliven water layer, avoid oil gas water breakthrough, effectively solve a cementing technology difficult problem for the serious Holes of Complicated Wells of oil, gas, water breakthrough; The elasticity leakage-proof mud Young's modulus that the present invention simultaneously obtains is low, tensile strength is high, and the large and volume microdilatancy of consolidation strength, can improve second interface bonding quality problem of cementing the well, meet repeatedly big-frac treatment pilot production requirement, enliven stratum obtain high produced hydrocarbon fluid at oil, gas, water.
Embodiment
embodiment 1, this elasticity leakage-proof mud raw materials by weight portion contains cement 100 parts, resilient material 15 parts to 40 parts, thick silica sand 40 parts to 65 parts, silica flour 20 parts to 30 parts, thin silica sand 5 parts to 10 parts, swelling agent 3 parts to 6 parts, additive 17.7 parts to 40.5 parts, 30 parts to 45 parts, water.In the elasticity leakage-proof mud that the present invention obtains, liquid gray scale is 45% to 75%, and liquid gray scale is the per-cent that additive and batched water account for cement quality.
embodiment 2, this elasticity leakage-proof mud raw materials by weight portion contains cement 100 parts, resilient material 15 parts or 40 parts, thick silica sand 40 parts or 65 parts, silica flour 20 parts or 30 parts, thin silica sand 5 parts or 10 parts, swelling agent 3 parts or 6 parts, additive 17.7 parts or 40.5 parts, 30 parts, water or 45 parts.
embodiment 3, this elasticity leakage-proof mud is pressed and is stated preparation method and obtain: the cement of aequum, resilient material, thick silica sand, silica flour, thin silica sand, additive and water are obtained elasticity leakage-proof mud after mixing.The present invention, by adding silica sand and the silica flour of latex resilient material, swelling agent and different-grain diameter, uses theory of high packing to reach rational grain composition; Tight filling improves density, erosion resistance, the anti-perforation impact capacity of Behavior of Hardened Cement Paste and reduces rate of permeation; It is chemical pre-stressed that swelling agent makes cement volumetric expansion produce, and strengthens the bond on annular space and sleeve pipe, stratum, effectively closes micro-annulus; Reach good anti-channeling ability with latex acting in conjunction, improve well cementation second interface cementing power simultaneously; The resilient material added can reduce the Young's modulus of Behavior of Hardened Cement Paste, improves tensile strength, can resist external force deformation, reaches the requirement meeting perforation and big-frac treatment exploitation.
embodiment 4, as the optimization of above-described embodiment, additive comprises latex, flow improver, retardant, suspension agent and defoamer; The mass ratio of latex, flow improver, retardant, suspension agent and defoamer is that 15 to 30:2 to 5:0 to 4:0.2 is to 1.0:0.5.
embodiment 5, as the optimization of above-described embodiment, latex is be applicable to non-ionic type in oil well cement paste or cationic latex or styrene-butadiene latex; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and retardant is calglucon liquid or flucoheptanoate liquid or carboxy phosphonic acid salt composite or organic acid; Or/and suspension agent is organic polymer material polymkeric substance; Or/and defoamer is more than one in dimethylsilane, silicone oil, organo-siloxane and phosphate mixture.
embodiment 6, as the optimization of above-described embodiment, the density of elasticity leakage-proof mud is 1.60g/cm
3
to 1.90g/cm
3
; Or/and the particle diameter of thick silica sand is 480 μm to 655 μm, SiO in thick silica sand
2
mass percentage be 90% to 98%; Or/and the particle diameter of silica flour is 4 μm to 9 μm, SiO in silica flour
2
mass percentage be 90% to 98%; Or/and the particle diameter of thin silica sand is 16 μm to 38 μm, SiO in thin silica sand
2
mass percentage be 90% to 98%.
embodiment 7, as the optimization of above-described embodiment, swelling agent is more than one in calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture, inorganic salt, alkalimetal oxide and rubber powder; Or/and resilient material is more than one in resin, rubber, fats polymkeric substance, fiber-like, Poly Propylene Wax, latex and synthetic macromolecule.
embodiment 8, this elasticity leakage-proof mud raw materials by weight portion contains cement 100 parts, resilient material 40 parts, thick silica sand 40 parts, silica flour 20 parts, thin silica sand 5 parts, swelling agent 6 parts, 30 parts, latex, flow improver 2 parts, suspension agent 1.0 parts, defoamer 0.5 part, 42.5 parts, water.In the elasticity leakage-proof mud that embodiment 8 obtains, liquid gray scale is 75%, and liquid gray scale is the per-cent that additive and batched water account for cement quality.The density of the elasticity leakage-proof mud of the present invention obtained by embodiment 8 is 1.60g/cm
3
.
embodiment 9, this elasticity leakage-proof mud raw materials by weight portion contains cement 100 parts, resilient material 28 parts, thick silica sand 55 parts, silica flour 25 parts, thin silica sand 10 parts, swelling agent 4 parts, 25 parts, latex, flow improver 3 parts, retardant 0.5 part, suspension agent 0.8 part, defoamer 0.5 part, 32 parts, water.In the elasticity leakage-proof mud that embodiment 9 obtains, liquid gray scale is 61%, and liquid gray scale is the per-cent that additive and batched water account for cement quality.The density of the elasticity leakage-proof mud of the present invention obtained by embodiment 9 is 1.80g/cm
3
.
embodiment 10, this elasticity leakage-proof mud raw materials by weight portion contains cement 100 parts, resilient material 15 parts, thick silica sand 65 parts, silica flour 30 parts, thin silica sand 10 parts, swelling agent 3 parts, 15 parts, latex, flow improver 5 parts, retardant 3 parts, suspension agent 0.3 part, defoamer 0.5 part, 32 parts, water.In the elasticity leakage-proof mud that embodiment 10 obtains, liquid gray scale is 45%, and liquid gray scale is the per-cent that additive and batched water account for cement quality.The density of the elasticity leakage-proof mud of the present invention obtained by embodiment 10 is 1.90g/cm
3
.
the elasticity leakage-proof mud of the present invention obtained by embodiment 8, embodiment 9 and embodiment 10 and the performance perameter of prior art grout are shown in Table 1; As can be seen from Table 1; The elasticity leakage-proof mud that the present invention obtains has reduction compared with the API dehydration of prior art grout and Young's modulus, rate of expansion, ultimate compression strength and tensile strength are all improved largely, the stable performance compared with prior art grout of elasticity leakage-proof mud that the present invention obtains is described, fluid loss is lower, stronger anti-gas channeling ability and water resistant is had to invade ability, can effectively suppress high-pressure oil-gas layer, enliven water layer, avoid oil gas water breakthrough, effectively solve a cementing technology difficult problem for the serious Holes of Complicated Wells of oil, gas, water breakthrough; The elasticity leakage-proof mud Young's modulus that simultaneously the present invention obtains is low, and tensile strength is high, and the large and volume microdilatancy of consolidation strength, can improve second interface bonding quality problem of cementing the well.
the present invention compared with prior art tool has the following advantages:
(1) the present invention adopts polycomponent mineral spike (silica sand, SILICA FUME) in grout, forms secondary, three grades, the tight filling of level Four, thus obtains tightly packed optimization grout; Tight filling improves the density of Behavior of Hardened Cement Paste, impermeability, erosion resistance and anti-perforation impact capacity, reduces rate of permeation, thus improves cement strength and have good anti-channeling ability.
(2) the present invention adds latex in grout, and the anti-channeling ability and the water resistant that improve grout invade ability.
(3) the present invention adds resilient material in grout, reduces the Young's modulus of Behavior of Hardened Cement Paste, improves Behavior of Hardened Cement Paste tensile strength, avoids cement annular space to break in follow-up perforation, frac job process even cracked, thus keeps Behavior of Hardened Cement Paste long-term integrity.
behavior of Hardened Cement Paste Young's modulus≤5000MPa of the present invention, tensile strength is 2.5MP to 5MP, can meet multistage big-frac treatment pilot production requirement.
(5) the present invention adds swelling agent in grout, makes Behavior of Hardened Cement Paste volumetric expansion, strengthen with sleeve pipe, stratum cementing, improve interface agglutination ability.
cement slurry thickening time of the present invention is easy to regulate, and multiviscosisty transit time, cement strength played fast, can solve an oil gas water breakthrough difficult problem preferably close to short transient time;
(7) the present invention effectively can solve the well cementation of narrow annular space, ensure that the operation process Behavior of Hardened Cement Pastes such as the follow-up perforation of Oil/gas Well, pressure break do not break, complete Behavior of Hardened Cement Paste annular space packing is provided for a long time, save a large amount of workover costs, applicable oil gas enlivens the spread of well well cementation.
in sum, the elasticity leakage-proof mud stable performance that the present invention obtains, fluid loss is lower, stronger anti-gas channeling ability and water resistant is had to invade ability, can effectively suppress high-pressure oil-gas layer, enliven water layer, avoid oil gas water breakthrough, effectively solve a cementing technology difficult problem for the serious Holes of Complicated Wells of oil, gas, water breakthrough; The elasticity leakage-proof mud Young's modulus that the present invention simultaneously obtains is low, tensile strength is high, and the large and volume microdilatancy of consolidation strength, can improve second interface bonding quality problem of cementing the well, meet repeatedly big-frac treatment pilot production requirement, enliven stratum obtain high produced hydrocarbon fluid at oil, gas, water.
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. an elasticity leakage-proof mud, is characterized in that raw materials by weight portion contains cement 100 parts, resilient material 15 parts to 40 parts, thick silica sand 40 parts to 65 parts, silica flour 20 parts to 30 parts, thin silica sand 5 parts to 10 parts, swelling agent 3 parts to 6 parts, additive 17.7 parts to 40.5 parts, 30 parts to 45 parts, water.
2. elasticity leakage-proof mud according to claim 1, is characterized in that elasticity leakage-proof mud obtains as follows: the cement of aequum, resilient material, thick silica sand, silica flour, thin silica sand, additive and water are obtained elasticity leakage-proof mud after mixing.
3. elasticity leakage-proof mud according to claim 1 and 2, is characterized in that additive comprises latex, flow improver, retardant, suspension agent and defoamer; The mass ratio of latex, flow improver, retardant, suspension agent and defoamer is that 15 to 30:2 to 5:0 to 4:0.2 is to 1.0:0.5.
4. elasticity leakage-proof mud according to claim 3, is characterized in that latex is be applicable to non-ionic type in oil well cement paste or cationic latex or styrene-butadiene latex; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and retardant is calglucon liquid or flucoheptanoate liquid or carboxy phosphonic acid salt composite or organic acid; Or/and suspension agent is organic polymer material polymkeric substance; Or/and defoamer is more than one in dimethylsilane, silicone oil, organo-siloxane and phosphate mixture.
5. the elasticity leakage-proof mud according to claim 1 or 2 or 3 or 4, is characterized in that the density of elasticity leakage-proof mud is 1.60g/cm
3to 1.90g/cm
3; Or/and the particle diameter of thick silica sand is 480 μm to 655 μm, SiO in thick silica sand
2mass percentage be 90% to 98%; Or/and the particle diameter of silica flour is 4 μm to 9 μm, SiO in silica flour
2mass percentage be 90% to 98%; Or/and the particle diameter of thin silica sand is 16 μm to 38 μm, SiO in thin silica sand
2mass percentage be 90% to 98%.
6. the elasticity leakage-proof mud according to claim 1 or 2 or 3 or 4 or 5, is characterized in that swelling agent is more than one in calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture, inorganic salt, alkalimetal oxide and rubber powder; Or/and resilient material is more than one in resin, rubber, fats polymkeric substance, fiber-like, Poly Propylene Wax, latex and synthetic macromolecule.
7. a preparation method for elasticity leakage-proof mud according to claim 1, is characterized in that carrying out in the steps below: the cement of aequum, resilient material, thick silica sand, silica flour, thin silica sand, additive and water are obtained elasticity leakage-proof mud after mixing.
8. the preparation method of elasticity leakage-proof mud according to claim 7, is characterized in that additive comprises latex, flow improver, retardant, suspension agent and defoamer; The mass ratio of latex, flow improver, retardant, suspension agent and defoamer is that 15 to 30:2 to 5:0 to 4:0.2 is to 1.0:0.5.
9. the preparation method of elasticity leakage-proof mud according to claim 8, is characterized in that latex is be applicable to non-ionic type in oil well cement paste or cationic latex or styrene-butadiene latex; Or/and flow improver is acetonformaldehyde polycondensate or amido polymeric derivative; Or/and retardant is calglucon liquid or flucoheptanoate liquid or carboxy phosphonic acid salt composite or organic acid; Or/and suspension agent is organic polymer material polymkeric substance; Or/and defoamer is more than one in dimethylsilane, silicone oil, organo-siloxane and phosphate mixture.
10. the preparation method of the elasticity leakage-proof mud according to claim 7 or 8 or 9, is characterized in that the density of elasticity leakage-proof mud is 1.60g/cm
3to 1.90g/cm
3; Or/and the particle diameter of thick silica sand is 480 μm to 655 μm, SiO in thick silica sand
2mass percentage be 90% to 98%; Or/and the particle diameter of silica flour is 4 μm to 9 μm, SiO in silica flour
2mass percentage be 90% to 98%; Or/and the particle diameter of thin silica sand is 16 μm to 38 μm, SiO in thin silica sand
2mass percentage be 90% to 98%; Or/and swelling agent is more than one in calcium aluminum oxide, calcium and magnesium oxides and passivation aluminium mixture, inorganic salt, alkalimetal oxide and rubber powder; Or/and resilient material is more than one in resin, rubber, fats polymkeric substance, fiber-like, Poly Propylene Wax, latex and synthetic macromolecule.
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| CN106543985A (en) * | 2016-09-30 | 2017-03-29 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | A kind of emulsion-type oil-well cement filtrate reducer and preparation method thereof |
| CN106701048A (en) * | 2016-12-19 | 2017-05-24 | 天津中油渤星工程科技有限公司 | Anti-water breakthrough material for well cementation and preparation method thereof |
| CN107418535A (en) * | 2017-06-30 | 2017-12-01 | 四川宏升石油技术开发有限责任公司 | Prepare the preparation method of rust-proof oil well cement anti-migration agent |
| CN107628781A (en) * | 2017-08-29 | 2018-01-26 | 四川弘晟石油工程技术服务有限公司 | A kind of cementing slurry and preparation method thereof |
| CN115716730A (en) * | 2021-08-24 | 2023-02-28 | 中国石油天然气集团有限公司 | Elastic-toughness micro-expansion cement slurry and preparation method thereof |
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| CN107628781A (en) * | 2017-08-29 | 2018-01-26 | 四川弘晟石油工程技术服务有限公司 | A kind of cementing slurry and preparation method thereof |
| CN115716730A (en) * | 2021-08-24 | 2023-02-28 | 中国石油天然气集团有限公司 | Elastic-toughness micro-expansion cement slurry and preparation method thereof |
| CN115716730B (en) * | 2021-08-24 | 2023-09-29 | 中国石油天然气集团有限公司 | Elastic and tough micro-expansion cement paste and preparation method thereof |
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