CN102604614B - Anti-flow cementing slurry for well cementation - Google Patents
Anti-flow cementing slurry for well cementation Download PDFInfo
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Abstract
The invention discloses anti-flow cementing slurry for well cementation, which comprises the following components by weight: 100 parts of cement, 0.2-3.5 parts of salt-resisting retarder, 0.1-0.2 part of defoaming agent, 6-30 parts of high-temperature strength stabilizing agent, 28-80 parts of water and 4.5-18 parts of gas-channeling preventing agent, wherein the weight of the cement is taken as the standard; the retarder adopts high polymer taking acrylamide as molecular main chain; polyether is taken as the defoaming agent; the high-temperature strength stabilizing agent adopts micro-silicon or amorphous silicon dioxide with the purity being larger than 95 %; and the anti-flow agent adopts ketone resin modified by acrylic acid. The anti-flow cementing slurry for well cementation has better combination property than that of the prior art and especially has high anti-flow capability.
Description
Technical field
The invention belongs to oil and gas well drilling engineering oilfield chemistry field, concrete, relate to the anti-channeling cementing slurry.
Background technology
In the petroleum natural gas exploration drilling well, in well, be lowered to sleeve pipe and inject cement at the annular space of sleeve pipe and well, this process is called well cementation.Whether smoothly the quality of cementing quality is directly determining follow-up oil-gas mining and the length of recovery time.During well cementation, whether effectively the annular space grout the cementing concrete ring stratum of packing different pressures system for the barrier effect direct relation of fluid, gas in stratum, and direct relation the quality of cementing quality, so for the anti-channeling effect of cementing slurry, more and more pay attention at present, the anti-channeling performance of cementing slurry has become the worldwide research topic in well cementation field.
Along with going deep into of domestic oil-gas exploration and development, the emerging oil-gas fields such as gas field, ,Long hilllock, ,Yuan Ba gas field, general phosgene field, Sichuan, Luojiazhai gas field have been found successively, the exploratory development drilling depth of these oil-gas fields is dark, bottom temperature is high, the zone of interest gas-bearing formation active, for well cementing operation, a more difficult problem has been proposed, not only require cementing slurry will meet high temperature deep well well cementation needs, and require grout to have stronger anti-channeling effect, while preventing from cementing the well, occur that has channeling, oil are altered, water breakthrough affects cementing quality or potential safety hazard.If the grout anti-channeling is indifferent when well cementation, gas, fluid are scurried in the annular space grout, after solidifying, grout will form the migration pathway of gas, fluid, the pressure on each stratum will be altered admittance and be caused later stage productive formation insufficient pressure, more seriously after gas formation has channeling passage, scurry into ground and will cause the serious security incidents such as blowout, so the quality of cementing slurry anti-channeling performance not only relation the casing and cementing quality, also the development for whole petroleum industry safety and stability has vital role.
The anti-gas channeling performance of cementing slurry mainly adopts two kinds of technique means to solve at present, the one, add the gas compensation oil well cement additive type additive of namely getting angry, the oil well cement paste type product of getting angry along with bottom temperature raise to activate produces the pressure-losses that gas improves grout after adding this series products, stops in external fluid, gas invasion water mud and reaches the effect of anti-channeling with this; The 2nd, add non-penetration material such as latex in grout, latex has impermeable characteristic, can improve the blocking capability of convection cell, gas, thus the has channeling of preventing.The type of getting angry leakage-proof mud is confined to apply in the low temperature shallow well substantially, because the time of getting angry is difficult to control, in the high temperature deep well well cementing operation, generally do not adopt this anti-channeling measure, the non-infiltration leakage-proof of latex class mud could be used because latex must have supporting latex stabilizer and other admixture, compatibleness to admixture requires high, and latex leakage-proof mud is subjected to temperature, shear, the digestion time impact is larger, when construction, be subjected to externality more, execute-in-place inconvenience and easily cause the well cementation accident, three latex-cement slurries were once arranged because the digestion time problem causes the well cementation accident in the Northeast, river.
Summary of the invention
Technical problem to be solved by this invention also is to provide a kind of anti-channeling cementing slurry, and the anti-migration agent that this cementing slurry is used not only can improve the anti-channeling ability of cementing slurry greatly, and can play the effect of water retaining, reduces the cement slurry water loss amount; The over-all properties of this cementing slurry is better compared to existing technology, and strength development is fast, and the anti-channeling ability is strong.
The present invention solves the problems of the technologies described above the technical scheme adopted: the anti-channeling cementing slurry, comprise that following component and corresponding parts by weight form: the quality of cement of take is benchmark, 100 parts of cement, 0.2～3.5 part of anti-salt retardant, 0.1～0.2 part of defoamer, 6～30 parts of stable high-temperature strength agent, 28～80 parts, water, 4.5～18 parts of anti-migration agents; Described retardant is that acrylamide is the high molecular polymer of molecular backbone chain, and described defoamer is polyethers; Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%; Described anti-migration agent is with acrylic acid modified ketone resin, and the molecular weight ranges of the ketone resin after described modification is 300,000-800,000 dalton.
Described anti-migration agent is the micelle shape particle that the ketone resin after acrylic acid modified is prepared into.
Described anti-migration agent is the micelle shape particle that the ketone resin after acrylic acid modified is prepared into, and the diameter of described micelle shape particle is 0.03～0.8mm.Described micelle shape particle refers to have elastic spherical particle material, herein also referred to as the elasticity micelle.Anti-migration agent adopts this macromolecule resin class of ketone resin material as raw material, with vinylformic acid, improve again, increase the water-soluble of ketone resin, and after shear granulation, form tiny elasticity micelle, while in cement, having pressure reduction to exist, the elasticity micelle is assembled rapidly the formation filter cake, the elasticity micelle rolls and makes with improving cement paste rheological because it is lubricated simultaneously, reduce the grout frictional resistance and solidify the front stronger liquid column hydrostatic pressure that has for a long time, realization is steady to the pressure of hydrocarbon zone, and the existence of this elasticity micelle simultaneously can also improve anti-current body infiltration capability.Therefore this anti-migration agent not only has the anti-channeling ability of cementing slurry, but also has certain dehydration function of falling.
Further technical scheme, described anti-migration agent is prepared by following raw materials according and corresponding parts by weight: 35～40 parts, water, 20～60 parts, formaldehyde; 12～33 parts, acetone; 4～15 parts, vinylformic acid; 8～19 parts of S-WATs, 1～5 part of ammonium persulphate.
Further technical scheme, the preparation method of described anti-migration agent is: at first press 35～40 parts, water, 20～60 parts, formaldehyde; 12～33 parts, acetone; 4～15 parts, vinylformic acid; 8～19 parts of S-WATs; The component that ammonium persulphate is 1～5 part and parts by weight carry out weighing; Secondly, water, formaldehyde, S-WAT are dropped in reactor, heating makes reactor be warming up to 45～55 ℃, and controls temperature formaldehyde, S-WAT were reacted 4～6 hours under the condition of 45～55 ℃, drips acetone in reaction process; After dropwising, heating makes reactor be warming up to 90～95 ℃, add again vinylformic acid, drip ammonium persulphate, after dropwising, make it under the condition of 90～95 ℃, maintain 1.8～2.2 hours, the reactor discharging also is prepared into micelle shape particle, namely prepares described anti-migration agent, and this anti-migration agent not only has the anti-channeling ability, also have the dehydration of falling effect, the diameter of described micelle shape particle is 0.03～0.8mm.
Further technical scheme, in the preparation method of described anti-migration agent, the step that is prepared into micelle shape particle after described reactor discharging is: the gelatin material of the cooling formation of reactor discharging, before use described gelatin material is poured into to stir in instrument and be stirred to bulk and add water to mix, after mixing, cross shearing pump approximately 3～5 times, make anti-migration agent become micelle shape particle suspension in water, namely prepare the anti-migration agent of micelle shape particle diameter 0.03～0.8mm.
Further technical scheme, anti-channeling cementing slurry of the present invention also comprises density adjuster, described density adjuster is light-weight additive or weighting agent; Described light-weight additive is for floating pearl or flyash, and the addition of described light-weight additive is counted 0～80 part by weight; Described weighting agent is barite or powdered iron ore, and the addition of described weighting agent is counted 0～140 part by weight.
Further technical scheme, anti-channeling cementing slurry of the present invention also comprises dispersion agent, and described dispersion agent is that aldehyde-ketone condensate or naphthalene are dispersion agent, and the addition of described dispersion agent is counted 0.5～2 part by weight.
Further technical scheme, anti-channeling cementing slurry of the present invention also comprises weighting agent, described weighting agent is the ultrafine particulate material, and the addition of described weighting agent is counted 2～8 parts by weight.Described weighting agent ultrafine particulate material can adopt silica flour.
In sum, the present invention compared with prior art, has following advantage:
1, the anti-migration agent of the inventive method use forms tiny elasticity micelle by the macromolecule resin that modification generates after shear granulation, while in cement, having pressure reduction to exist, the elasticity micelle is assembled rapidly the formation filter cake, the elasticity micelle rolls and makes with improving cement paste rheological because it is lubricated simultaneously, reduce the grout frictional resistance and solidify the front stronger liquid column hydrostatic pressure that has for a long time, realization is steady to the pressure of hydrocarbon zone, and the existence of this micelle simultaneously can also improve anti-current body infiltration capability.Therefore this anti-migration agent not only has the anti-channeling ability of cementing slurry, but also has certain dehydration function of falling.
Excellent property when 2, anti-channeling cementing slurry of the present invention is at high temperature used, therefore have high-temperature resistance preferably.The anti-migration agent that the present invention prepares at high temperature elasticity micelle is inertia substantially, insensitive to the variation of temperature, pressure, and under high temperature, cement slurry property is stable.
3, anti-channeling cementing slurry of the present invention is used density wide, can mix as required low density, high-density, a plurality of anti fluid channeling cement slurry system of conventional density, therefore can meet various cementing requirements.
Embodiment
Below in conjunction with embodiment, the present invention is described in further detail, but embodiments of the present invention are not limited to this.
1, the preparation of sulfonated acetone formaldehyde vinylformic acid condenses anti-migration agent.
Prepare raw material: 35～40 parts, water, 20～60 parts, formaldehyde; 12～33 parts, acetone; 4～15 parts, vinylformic acid; 8～19 parts of S-WATs, 1～5 part of ammonium persulphate.
Preparation method: at first press 35～40 parts, water, 20～60 parts, formaldehyde; 12～33 parts, acetone; 4～15 parts, vinylformic acid; 8～19 parts of S-WATs; The component that ammonium persulphate is 1～5 part and parts by weight carry out weighing; Secondly, water, formaldehyde, S-WAT are dropped in reactor, heating makes reactor be warming up to 45～55 ℃, and controls temperature formaldehyde, S-WAT were reacted 4～6 hours under the condition of 45～55 ℃, drips acetone in reaction process; After dropwising, heating makes reactor be warming up to 90～95 ℃, then adds vinylformic acid, drips ammonium persulphate, after dropwising, make it under the condition of 90～95 ℃, maintain 1.8～2.2 hours, the reactor discharging also is prepared into micelle shape particle, namely prepares described anti-migration agent, this anti-migration agent is the ketone resin after acrylic acid modified, not only have the anti-channeling ability, also have the dehydration of falling effect, the diameter of described micelle shape particle is 0.03～0.8mm.
After measured, the molecular weight ranges of the modification ketone resin for preparing of the present invention is 300,000-800,000 dalton.
The gelatin material of the cooling formation of reactor discharging, described gelatin material is poured into to stir in instrument and be stirred to bulk and add water to mix, after mixing, cross shearing pump approximately 3～5 times, make anti-migration agent become micelle shape particle suspension in water, namely prepare the anti-migration agent of micelle shape particle diameter 0.03～0.8mm.
The modification ketone resin anti-migration agent that present method the prepares experiment of embodiment 1-embodiment 7 below.
2, the present invention contain the cementing slurry of ketone resin anti-migration agent of modification and prior art well cementation cementing slurry for well Performance Ratio.
Comparative Examples 1: a kind of conventional density cementing slurry, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: 30% stable high-temperature strength agent, 1.2% anti-salt retardant, 8% oil-well cement filtrate reducer, 3% oil well cement anti-migration agent, 0.2% defoamer, 44% tap water.Described oil-well cement filtrate reducer refers to the common water retaining of market sale, and the composition of this common water retaining is AMPS and AA polymkeric substance.Described oil well cement anti-migration agent is the type anti-migration agent of getting angry, and is mixed by modified fibre, active silica, calcium carbonate powders and lime powder.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers.
Described raw material mixed and be stirred in together, namely preparing cementing slurry, measuring the correlated performance of grout, in Table 1 and table 2.
Comparative Examples 2: a kind of high-density (2.20g/cm
3) cementing slurry, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: 95% barite weighting agent, 30% stable high-temperature strength agent, 1.5% anti-salt retardant, 4.5% oil-well cement filtrate reducer, 3% oil well cement anti-migration agent, 0.15% defoamer, 36% tap water.Described oil-well cement filtrate reducer refers to the common water retaining of market sale, the composition AMPS of this common water retaining and AA polymkeric substance.Described oil well cement anti-migration agent is the type anti-migration agent of getting angry, and is mixed by modified fibre, active silica, calcium carbonate powders and lime powder.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers.
Described raw material mixed and be stirred in together, namely preparing cementing slurry, measuring the correlated performance of grout, in Table 1 and table 2.
Because anti-migration agent of the present invention is micelle shape particle, thus gas channeling prevention well cementing grout prepared by the present invention, also referred to as micelle type gas channeling prevention well cementing grout.
Embodiment 1: the invention provides a kind of low density micelle type gas channeling prevention well cementing grout, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: acrylic acid modified ketone resin anti-migration agent prepared by 50% light-weight additive, 25% stable high-temperature strength agent, 17% the present invention, 1.35% anti-salt retardant, 0.2% defoamer, 70% tap water.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers.
Described raw material mixed and be stirred in together, namely preparing cementing slurry, measuring the correlated performance of grout, in Table 1 and table 2.
Embodiment 2: the invention provides a kind of conventional density micelle type gas channeling prevention well cementing grout, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: modification ketone resin anti-migration agent prepared by 30% stable high-temperature strength agent, 8% the present invention, 1.2% anti-salt retardant, 0.2% defoamer, 44% tap water.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers.Described raw material mixed and be stirred in together, namely preparing cementing slurry, measuring the correlated performance of grout, in Table 1 and table 2.
Embodiment 3: the invention provides a kind of high-density (2.20g/cm
3) micelle type gas channeling prevention well cementing grout, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: modification ketone resin anti-migration agent prepared by 95% weighting agent, 30% stable high-temperature strength agent, 4.5% the present invention, 1.5% anti-salt retardant, 0.15% defoamer, 36% tap water.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers.Described raw material mixed and be stirred in together, namely preparing cementing slurry, measuring the correlated performance of grout, in Table 1 and table 2.
Embodiment 4: the invention provides a kind of high-density (2.40g/cm
3) micelle type gas channeling prevention well cementing grout, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: modification ketone resin anti-migration agent prepared by 125% weighting agent, 15% stable high-temperature strength agent, 3.5% the present invention, 1.3% anti-salt retardant, 0.15% defoamer, 32% tap water.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers.Described raw material mixed and be stirred in together, namely preparing cementing slurry, measuring the correlated performance of grout, in Table 1 and table 2.
Embodiment 5: a kind of high-density (2.50g/cm of the present invention
3) micelle type gas channeling prevention well cementing grout, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: 135% weighting agent, 6% stable high-temperature strength agent, 3.0% the present invention prepare modification ketone resin anti-migration agent, 1.6% anti-salt retardant, 0.15% defoamer, 30% tap water.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers.Described raw material mixed and be stirred in together, namely preparing cementing slurry, measuring the correlated performance of grout, in Table 1 and table 2.
Table 1 grout API performance
Table 2 grout anti-channeling merit rating
The implication of each parameter in table 2: static gel strength development transit time i.e. transit time from 48Pa to 240Pa, and the static gel strength development is shorter transit time, and cement zero-g time in condensing process is shorter, and it prevents that weightlessness from causing that the ability of altering on fluid is stronger.The dangerous time of gas cut is shorter is that the anti-gas channeling ability is also stronger; The larger explanation grout of gas cut Resistance Value is stronger for the ability of opposing fluid invasion water mud, and namely the anti-gas channeling ability is also stronger.During final set volumetric shrinkage more novel open fire mud to solidify the probability of rear formation microgap or passage less, leave the space of altering on fluid for just relatively less, the anti-channeling ability is stronger.
From table 1, table 2, find out, 1. from the correlation data of embodiment 2 and Comparative Examples 1, can find out, the SPN value of the embodiment of the present invention 2 is less than Comparative Examples 1, static gel strength development is less than Comparative Examples 1 transit time, the dangerous time of gas cut is less than Comparative Examples 1, the gas cut Resistance Value is greater than Comparative Examples 1, and during final set, volumetric shrinkage is greater than Comparative Examples.Therefore, the present invention's cementing slurry of containing modification ketone resin anti-migration agent has stronger anti-channeling ability than Comparative Examples.2. from the data of embodiment 2, embodiment 3 and Comparative Examples 1, Comparative Examples 2, finding out, under the condition that does not add water retaining, cement slurry water loss amount provided by the invention is little, illustrates that anti-migration agent that the present invention prepares has certain dehydration function of falling.3. the grout high comprehensive performance of anti-channeling cementing slurry each density points under hot conditions of the modification ketone resin anti-migration agent for preparing of the embodiment of the present invention, strength development is fast, and the anti-channeling ability is strong, can meet the site operation requirement.
Embodiment 6: the invention provides a kind of low density micelle type gas channeling prevention well cementing grout, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: modification ketone resin anti-migration agent prepared by 50% light-weight additive, 25% stable high-temperature strength agent, 17% the present invention, 1.35% anti-salt retardant, 0.2% defoamer, 70% tap water, 0.5% aldehyde-ketone condensate dispersion agent, weighting agent 2%.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers, and described weighting agent is the ultrafine particulate material.Described tap water also can be fresh water or seawater.
Described raw material mixed and be stirred in together, namely preparing cementing slurry of the present invention.
Embodiment 7: the invention provides a kind of low density micelle type gas channeling prevention well cementing grout, the weight percent of each component be take 100% G class g cement and is benchmark, and the per-cent that various additives account for G class g cement weight is: modification ketone resin anti-migration agent prepared by 50% light-weight additive, 25% stable high-temperature strength agent, 17% the present invention, 1.35% anti-salt retardant, 0.2% defoamer, 70% tap water, 2% naphthalene are dispersion agent, weighting agent 8%.Described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%, and described anti-salt retardant is acrylamide polymer, and described defoamer is polyethers, and described weighting agent is the ultrafine particulate material.
Described raw material mixed and be stirred in together, namely preparing cementing slurry of the present invention.
As mentioned above, just can realize preferably the present invention.
Claims (7)
1. anti-channeling cementing slurry, it is characterized in that, comprise that following component and corresponding parts by weight form: the quality of cement of take is benchmark, 100 parts of cement, 0.2～3.5 part of anti-salt retardant, 0.1～0.2 part of defoamer, 6～30 parts of stable high-temperature strength agent, 28～80 parts, water, 4.5～18 parts of anti-migration agents; Described retardant is that acrylamide is the high molecular polymer of molecular backbone chain, and described defoamer is polyethers, and described stable high-temperature strength agent is the amorphous silica that micro-silicon or purity are greater than 95%; The micelle shape particle of described anti-migration agent for being prepared into the ketone resin after acrylic acid modified, and the molecular weight ranges of the ketone resin after described modification is 300,000-800,000 dalton; The diameter of described micelle shape particle is 0.03～0.8mm.
2. anti-channeling cementing slurry as claimed in claim 1, is characterized in that, described anti-migration agent is prepared by following raw materials according and corresponding parts by weight: 35～40 parts, water, 20～60 parts, formaldehyde; 12～33 parts, acetone; 4～15 parts, vinylformic acid; 8～19 parts of S-WATs, 1～5 part of ammonium persulphate.
3. anti-channeling cementing slurry as claimed in claim 1, is characterized in that, the preparation method of described anti-migration agent is: at first press 35～40 parts, water, 20～60 parts, formaldehyde; 12～33 parts, acetone; 4～15 parts, vinylformic acid; 8～19 parts of S-WATs; The component that ammonium persulphate is 1～5 part and parts by weight carry out weighing; Secondly, water, formaldehyde, S-WAT are dropped in reactor, heating makes reactor be warming up to 45～55 ℃, and controls temperature formaldehyde, S-WAT were reacted 4～6 hours under the condition of 45～55 ℃, drips acetone in reaction process; After dropwising, heating makes reactor be warming up to 90～95 ℃, add again vinylformic acid, drip ammonium persulphate, after dropwising, make it under the condition of 90～95 ℃, maintain 1.8 ~ 2.2 hours, the reactor discharging also is prepared into micelle shape particle, namely prepare described anti-migration agent, the diameter of described micelle shape particle is 0.03～0.8mm.
4. anti-channeling cementing slurry as claimed in claim 3, it is characterized in that, in the preparation method of described anti-migration agent, the step that is prepared into micelle shape particle after described reactor discharging is: the gelatin material of the cooling formation of reactor discharging, before use described gelatin material is poured into to stir in instrument and be stirred to bulk and add water to mix, after mixing, cross shearing pump 3～5 times, namely prepare the anti-migration agent of micelle shape particle diameter 0.03～0.8mm.
5. anti-channeling cementing slurry as described as claim 1-4 any one, is characterized in that, also comprises density adjuster, and described density adjuster is light-weight additive or weighting agent; Described light-weight additive is for floating pearl or flyash, and the addition of described light-weight additive is counted 0～80 part by weight; Described weighting agent is barite or powdered iron ore, and the addition of described weighting agent is counted 0～140 part by weight.
6. anti-channeling cementing slurry as described as claim 1-4 any one, is characterized in that, also comprises dispersion agent, and described dispersion agent is that aldehyde-ketone condensate or naphthalene are dispersion agent, and the addition of described dispersion agent is counted 0.5～2 part by weight.
7. anti-channeling cementing slurry as described as claim 1-4 any one, is characterized in that, also comprises weighting agent, and described weighting agent is the ultrafine particulate material, and the addition of described weighting agent is counted 2～8 parts by weight.
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| CN103666420A (en) * | 2013-11-29 | 2014-03-26 | 中石化江汉石油工程有限公司钻井一公司 | Cement slurry for shale gas development oil-based drilling fluid well cementation technology |
| CN105315976A (en) * | 2014-06-05 | 2016-02-10 | 镇江市船山第二水泥厂 | Cement slurry |
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| CN103146368A (en) * | 2013-03-01 | 2013-06-12 | 中国石油大学(华东) | Elastic well cementation cement paste and preparation method thereof |
| CN106256871B (en) * | 2015-06-19 | 2019-02-22 | 中国石油化工股份有限公司 | A kind of elastoplasticity cementing slurry and preparation method thereof |
| CN106318355B (en) * | 2015-06-25 | 2018-09-18 | 中国石油化工股份有限公司 | A kind of elastoplasticity well cementing mortar architecture and its application |
| CN106367048B (en) * | 2015-07-22 | 2018-09-18 | 中国石油化工股份有限公司 | Cementing slurry plasticizer and preparation method thereof and cement mortar prepared therefrom |
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| CN101870862A (en) * | 2010-07-07 | 2010-10-27 | 中国石油集团川庆钻探工程有限公司长庆固井公司 | Low-density high-strength leak-resistant slurry method for sealing leakage producing formation |
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| CN103666420A (en) * | 2013-11-29 | 2014-03-26 | 中石化江汉石油工程有限公司钻井一公司 | Cement slurry for shale gas development oil-based drilling fluid well cementation technology |
| CN105315976A (en) * | 2014-06-05 | 2016-02-10 | 镇江市船山第二水泥厂 | Cement slurry |
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