CN105038745A - Novel liquid silicon anti-channeling cement slurry used in well cementation - Google Patents
Novel liquid silicon anti-channeling cement slurry used in well cementation Download PDFInfo
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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
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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
- 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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/20—Retarders
- C04B2103/22—Set retarders
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/40—Surface-active agents, dispersants
- C04B2103/408—Dispersants
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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
- C04B2103/00—Function or property of ingredients for mortars, concrete or artificial stone
- C04B2103/50—Defoamers, air detrainers
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Abstract
The invention discloses a novel liquid silicon anti-channeling cement slurry used in well cementation, which includes following raw materials, by weight, 95-105 parts of G-grade cement, 10-35 parts of a strength stabilizer, 0.5-4 parts of a retarder, 0.1-0.2 parts of a defoaming agent, 5-15 parts of a filling agent, 0.5-2 parts of a dispersing agent, 100 parts of water, 5-15 parts of an anti-gas channeling agent, 5-10 parts of a fluid loss agent and also a density adjusting agent. The raw materials are mixed and stirred uniformly to prepare the novel liquid silicon anti-channeling cement slurry. The anti-channeling cement slurry is low in water loss, is good in stability, is short in static gelatinization transition time, is strong in anti-gas channeling performance, is quick in early strength development at a low temperature and resists corrosion of acidic mediums. Set cement slurry is slight in expansion, is less in porosity, is high in compactness and low in permeability, and can satisfy requirements in various well cementation situations.
Description
Technical field
The present invention relates to a kind of Novel cementing liquid silicon leakage-proof mud, belong to oil and gas well drilling engineering field of oilfield chemistry.
Background technology
More and more pay attention to the fleeing proof effect of cementing slurry at present, the anti-channeling ability of grout has become the emphasis research topic in well cementation field.In existing well cementing operation, there is shallow gas pay and waterbearing stratum, earth's surface, Formation bearing pressure is low and winter job temperature is low situation, cementitious grout is made to develop intensity slow, weightlessness during grout Hou Ning causes fluid column pressure to reduce, very easily cause the generation of aqueous vapor channelling, has channeling is phenomenon common in Sweet natural gas well cementation, after referring to well cementation, gas invades annular space and the phenomenon of migrating along cement mantle body, well cementation second interface from body layer hole, be that nearly all gasser is cemented the well the potential problems all existed, have a strong impact on cementing quality.If grout anti-gas channeling ability is weak, grout makes fluid, gas invade before not solidifying, Behavior of Hardened Cement Paste integrity is damaged, cause inter-zone commununation, thus cause annular space with pressure, even cause scrapping of a bite well time serious, affect carrying out smoothly of the production operations such as subsequent well, completion, exploitation, acid fracturing, and affect the safe exploratory development of oil-gas field.Has channeling problem was found in gas storage well Completion Operations the sixties in last century, at present domestic and international mainly through restriction grout return height, i gradient cementing slurry system is taked in the design of grout rod structure, annular space builds the pressure to wait and coagulates, increase mixing water before cementing or improve annular space mud density, adopt conventional multistage cementing technology, use the instruments such as external packer of pipe, expansion tail pipe, impulse oscillation producer, use the mode measures such as slurry system such as special cement such as inflation cement or impermeability etc. to carry out prevention of water mud and annular channeling phenomenon occurs in condensing process.
The foamed cement slurry system of external exploitation, expansive cement slurry system, stage polymer latex cement slurry system are all applied in well cementation and Tunnel Engineering, particularly stage polymer latex cement slurry system is since application in 1958, be called as best channeling control cement slurry system, effectively can control has channeling.
The Chinese patent literature being CN1425627 as publication number discloses a kind of oil drilling cementing technology deep well cementing field high temperature anti-flee latex additive for cement used.Solve the problem that grout anti-channeling performance is poor, formation damage is serious, cementing quality is poor.It has high temperature resistance, low dehydration, right angle gelling, low permeability, feature that rheological is good; the requirement of cementing operation under Temperature Deep condition can be met; under Temperature Deep condition, anti-channeling ability is good, cementing quality is good, be conducive to reservoir protection; improve the effect of exploratory development; extend oil well work-ing life, but also there is corresponding weak point.Such as, liquid latex its solid content obtained by prior art only can accomplish about 50%, and the solid content of polymer latex milk powder often reaches more than 95%, if corresponding fleeing proof effect need be reached, the dosage of liquid latex also will increase, this will reduce the ultimate compression strength of Behavior of Hardened Cement Paste, and to the density of grout, degree of mobilization and thickening time all can cause fluctuation.In order to solve the problem, the present invention develops a kind of Novel cementing liquid silicon leakage-proof mud by a large amount of experiments with according to oil-gas field practical experience.
Summary of the invention
The object of the invention is to overcome the deficiencies in the prior art, a kind of Novel cementing liquid silicon leakage-proof mud be provided, this mortar architecture use liquid silicon makes the low dehydration of grout, good stability, quiet gelling transition time is short, anti-gas channeling ability is strong; Under grout low temperature, early strength development is fast, acidic mediums corrosion simultaneously, and the dry and hard rear microdilatancy of grout, porosity is little, compactness is high, rate of permeation is low.
The object of the invention is to be achieved through the following technical solutions:
A kind of Novel cementing liquid silicon leakage-proof mud, it contains the raw material of following weight part: 95 ~ 105 parts of G class g cements, 5 ~ 15 parts of agent for anti gassing-out, 10 ~ 35 parts of intensity stabilization agent, 0.5 ~ 4 part of retardant, 0.1 ~ 0.2 part of defoamer, 0.5 ~ 2 part of dispersion agent, 5 ~ 10 parts of water retainings, 100 parts of water.
Described agent for anti gassing-out is liquid silicon or silicon sol.
Described agent for anti gassing-out is liquid silicon.
Described agent for anti gassing-out liquid silicon is nano level liquid silica, is divided into two profiles number, and I type density is 1.20 ~ 1.25g/cm
3, colourless, II type density is 1.40 ~ 1.45g/cm
3, color is grey black.
Described intensity stabilization agent is the amorphous silica that micro-silicon or purity are greater than 95%.
Described retardant is AMPS polymkeric substance, and described defoamer is polyethers defoamer.
Described dispersion agent is aldehyde-ketone condensate or naphthalene system dispersion agent.
Described water retaining is any one in AMPS polymkeric substance, keto-aldehyde condensation class, PVA.
A kind of Novel cementing liquid silicon leakage-proof mud, also comprise 5 ~ 15 parts of weighting agents, described weighting agent is ultra fine grain material.
A kind of Novel cementing liquid silicon leakage-proof mud, also comprise density adjuster, described density adjuster is light-weight additive or weighting agent, described light-weight additive is drift pearl or flyash, the addition of described light-weight additive is 0 ~ 60 part, described weighting agent is barite or powdered iron ore, the addition of described weighting agent 0 ~ 120 part.
The present invention solves the problems of the technologies described above adopted technical scheme and also comprises: a kind of preparation method of liquid silicon leakage-proof mud, take cement 95 ~ 105 parts, intensity stabilization agent 10 ~ 35 parts, agent for anti gassing-out 5 ~ 15 parts, water retaining 5 ~ 10 parts, retardant 0.5 ~ 4 part, dispersion agent 0.5 ~ 2 part, defoamer 0.1 ~ 0.2 part, weighting agent 5 ~ 15 parts, 100 parts of water, then need to add density adjuster according to density; Mentioned component is mixed, stirs, namely prepare described a kind of liquid silicon leakage-proof mud.
The invention has the beneficial effects as follows: liquid silicon leakage-proof mud of the present invention, its major technique advantage is liquid silicon or silicon sol to apply in mortar architecture, and the present invention compared with prior art, has following advantageous feature:
(1) liquid silicon anti fluid channeling cement slurry system Applicable temperature of the present invention, density are extensively, Applicable temperature (BHCT): 4-150 DEG C, density range: 1.45-2.45g/cm
3, be applicable to fresh water or undersaturation salt solution, therefore, various cementing requirements can be met;
(2) liquid silicon has very high specific surface area, the silicone hydroxyl of particle surface and the Ca of grout space solution
2+form ionic linkage, play the effect of suspension cement granules, stabilizing cement slurry, zero free water;
(3) liquid silicon has pozzolanic action, has obvious blood coagulation enhancing effect, improves the early anti pressured intension under low temperature, can reduce the hole in Behavior of Hardened Cement Paste, thus reduces the rate of permeation of Behavior of Hardened Cement Paste;
(4) liquid silicon be used alone or with silica flour with the use of, all can play the effect preventing cement strength from failing, there is the effect preventing Behavior of Hardened Cement Paste high temperature from failing, simultaneously can anti-gas channeling, improve interface cementing strength;
(5) liquid silicon anti-migration agent is insensitive to temperature, pressure change;
(6) the present invention adopts agent for anti gassing-out to be liquid, and on-the-spot mixture uses simple, good uniformity, easy to operate.
Accompanying drawing explanation
Fig. 1 is low density (embodiment 1,1.50g/cm
3) 90 DEG C of multiviscosisty curves;
Fig. 2 is conventional density (embodiment 2,1.90g/cm
3) 120 DEG C of multiviscosisty curves;
Fig. 3 is conventional density (embodiment 3,1.90g/cm
3) 135 DEG C of multiviscosisty curves;
Fig. 4 is high-density (embodiment 4,2.20g/cm
3) 120 DEG C of multiviscosisty curves;
Fig. 5 high-density (embodiment 5,2.50g/cm
3) 150 DEG C of multiviscosisty curves;
Fig. 6 liquid silicon dosage is on initial consistency, API dehydration, the impact of thickening time.
Embodiment
Below in conjunction with the Performance comparision of prior art grout, embodiment and accompanying drawing, technical scheme of the present invention is described in further detail, but protection scope of the present invention is not limited to the following stated.
Embodiment and comparative example as follows:
[embodiment 1] a kind of Novel cementing liquid silicon leakage-proof mud provided by the invention, low density (1.50g/cm
3), it contains the raw material of following weight part, the G class g cement of 95 parts, 10 intensity stabilization agent, 0.5 part of retardant, 0.1 part of defoamer, 5 parts of weighting agents, 0.5 part of dispersion agent, 5 parts of agent for anti gassing-out, 5 parts of water retainings, 20 parts of light-weight additives, 100 parts of water.Described intensity stabilization agent is micro-silicon, and described retardant is AMPS polymkeric substance, and described defoamer is polyethers, described weighting agent is ultra fine grain material, and described dispersion agent is aldehyde-ketone condensate, and described agent for anti gassing-out is liquid silicon, water retaining is AMPS polymkeric substance, and described light-weight additive is drift pearl.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.90 DEG C of multiviscosisty curves as shown in Figure 1.
[embodiment 2] a kind of Novel cementing liquid silicon leakage-proof mud provided by the invention, it contains the raw material of following weight part, the G class g cement of 100 parts, 15 parts of intensity stabilization agent, 1.5 parts of retardant, 0.15 part of defoamer, 10 parts of weighting agents, 1 part of dispersion agent, 8 parts of agent for anti gassing-out, 2 parts of water retainings, 100 parts of water.Described intensity stabilization agent is the amorphous silica of purity 98%, and described retardant is AMPS polymkeric substance, and described defoamer is polyethers, described weighting agent is ultra fine grain material, described dispersion agent is naphthalene system dispersion agent, and described agent for anti gassing-out is silicon sol, and water retaining is PVA.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.120 DEG C of multiviscosisty curves as shown in Figure 2.
[embodiment 3] a kind of Novel cementing liquid silicon leakage-proof mud provided by the invention, it contains the raw material of following weight part, the G class g cement of 105 parts is benchmark, 35 parts of intensity stabilization agent, 4.0 parts of retardant, 0.2 part of defoamer, 15 parts of weighting agents, 2.0 parts of dispersion agents, 15 parts of agent for anti gassing-out, 10 parts of water retainings, 100 parts of water.Described intensity stabilization agent is micro-silicon, and described retardant is AMPS polymkeric substance, and described defoamer is polyethers, and described weighting agent is ultra fine grain material, and described dispersion agent is aldehyde-ketone condensate, and described anti-gas blowby agent is liquid silicon, and water retaining is AMPS polymkeric substance.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.135 DEG C of multiviscosisty curves as shown in Figure 3.
[embodiment 4] a kind of Novel cementing liquid silicon leakage-proof mud provided by the invention, high-density (2.20g/cm
3), it contains the raw material of following weight part, the G class g cement of 105 parts, 35 parts of intensity stabilization agent, 2.5 parts of retardant, 0.2 part of defoamer, 8 parts of weighting agents, 1.0 parts of dispersion agents, 8 parts of agent for anti gassing-out, 6.0 parts of water retainings, 55 parts of weighting agents, 100 parts of water.Described intensity stabilization agent is micro-silicon, and described retardant is AMPS polymkeric substance, and described defoamer is polyethers, described weighting agent is ultra fine grain material, and described dispersion agent is aldehyde-ketone condensate, and described agent for anti gassing-out is liquid silicon, water retaining is AMPS polymkeric substance, and described weighting agent is barite.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.120 DEG C of multiviscosisty curves as shown in Figure 4.
[embodiment 5] a kind of Novel cementing liquid silicon leakage-proof mud provided by the invention, high-density (2.50g/cm
3), it contains the raw material of following weight part, the G class g cement of 100 parts, 35 parts of intensity stabilization agent, 3.0 parts of retardant, 0.2 part of defoamer, 5 parts of weighting agents, 1.5 parts of dispersion agents, 4.0 parts of water retainings, 8 parts of agent for anti gassing-out, 120 parts of weighting agents, 100 parts of water.Described intensity stabilization agent is the amorphous silica of purity 96%, described retardant is AMPS polymkeric substance, described defoamer is polyethers, described weighting agent is ultra fine grain material, described dispersion agent is naphthalene system dispersion agent, described agent for anti gassing-out is silicon sol, and water retaining is condensation class, and described weighting agent is powdered iron ore.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.150 DEG C of multiviscosisty curves as shown in Figure 5.
[comparative example 1] a kind of low density (1.50g/cm
3) cementing slurry, the weight part of each component with the G class g cement of 100 parts for benchmark, 20 parts of light-weight additives, 5 parts of weighting agents, 1.5 parts of retardant, 5 parts of water retainings, 3 parts of agent for anti gassing-out, 0.2 part of defoamer, 100 parts of water.Described light-weight additive is drift pearl, and described weighting agent is ultra fine grain material, and water retaining is AMPS polymkeric substance, and described retardant is AMPS polymkeric substance, and described anti-migration agent is common type anti-migration agent of getting angry, and described defoamer is polyethers.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.
[comparative example 2] a kind of conventional density cementing slurry, the weight part of each component with the G class g cement of 100 parts for benchmark, 35 parts of intensity stabilization agent, 5 parts of weighting agents, 1.5 parts of retardant, 3 parts of water retainings, 3 parts of agent for anti gassing-out, 0.2 part of defoamer, 100 parts of water.Described high-temperature stabiliser is the amorphous silica of purity 97%, and described weighting agent is ultra fine grain material, and water retaining is keto-aldehyde condensation class, and described retardant is AMPS polymkeric substance, and described anti-migration agent latex class anti-migration agent, described defoamer is polyethers.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.
[comparative example 3] a kind of high-density (2.40g/cm
3) cementing slurry, the weight part of each component with the G class g cement of 100 parts for benchmark, 35 parts of intensity stabilization agent, 90 parts of weighting agents, 5 parts of weighting agents, 1.5 parts of retardant, 2 parts of water retainings, 3 parts of agent for anti gassing-out, 0.2 part of defoamer, 100 parts of water.Described high-temperature stabiliser is micro-silicon, described weighting agent powdered iron ore, and described weighting agent is ultra fine grain material, and water retaining is PVA, and described retardant is AMPS polymkeric substance, and described anti-migration agent is latex class anti-migration agent, and described defoamer is polyethers.Described raw material mixed and stirs, namely preparing cementing slurry, measuring the correlated performance of grout, the results are shown in Table 1.
Table 1 grout fundamental property
Each embodiment and comparative example grout anti-gas channeling aptitude tests evaluation result are as table 2:
Table 2 grout anti-channeling merit rating result
Cement slurry property coefficient (SPN) is the cement slurry property evaluating considering grout multiviscosisty transit time and cement slurry weight loss speed; SPN value is less, grout multiviscosisty transit time and API fluid loss less, anti-channeling performance is better, and the grout SPN value that anti-channeling performance is good is less than 10.From table, the SPN value of each example can be found out, liquid silicon channeling control cement slurry provided by the invention has better anti-channeling performance.
Static gel strength develops the transit time referred to transit time from 48Pa to 240Pa, static gel strength development is shorter for transit time, cement zero-g time in condensing process is shorter, and the transit time that Behavior of Hardened Cement Paste plays intensity is shorter, and its ability preventing weightlessness from causing and fluid is altered is stronger.As can be seen from data in table, the embodiment of the present invention is comparative example comparatively, and the dangerous static gel strength of gas cut develops and significantly shortens transit time, enhances grout anti-gas channeling ability.
Gas cut critical time and gas cut Resistance Value are the visual evaluations of grout anti-gas channeling performance; Gas cut critical time is shorter, gas cut Resistance Value is larger, then has channeling fluid between the cement slurry weight loss waiting on cement on the resistance of altering larger, namely the anti-gas channeling ability of mortar architecture is stronger.From data in table, embodiment of the present invention gas cut critical time significantly shortens, and gas cut Resistance Value increases, illustrates mortar architecture of the present invention increase has channeling fluid starch in post on alter resistance, effectively inhibit has channeling.
Each embodiment and comparative example Behavior of Hardened Cement Paste porosity and rate of permeation test test evaluation result as table 3:
Table 3 Behavior of Hardened Cement Paste porosity and rate of permeation evaluation result
Cubical expansivity be grout weightless, be frozen into Behavior of Hardened Cement Paste after the ratio of volume expansion.If volumetric shrinkage can cause interval isolation sealing incomplete after cement slurry sets becomes Behavior of Hardened Cement Paste, passage is altered in existence; Suitable cubical expansivity can improve well cementation sealing quality.In table 3, the cubical expansivity of each embodiment compares the comparative example gained of equal densities grout.The grout of this patent mortar architecture is after being frozen into Behavior of Hardened Cement Paste, and volume has slight expansion, is conducive to improving cementing section.
Behavior of Hardened Cement Paste porosity and permeability evaluates concrete column interval isolation anti-gas channeling performance parameter the most intuitively.Porosity is less, illustrates that the inner filling effect of Behavior of Hardened Cement Paste is better; Rate of permeation is less, and illustrate that the resistance that Behavior of Hardened Cement Paste passes through fluid is larger, fleeing proof effect is better.In this patent, the rate of permeation of each embodiment, comparative example Behavior of Hardened Cement Paste all adopts gas as fluid medium, under the static pressure difference condition of 3.5MPa, test gained.From data in table, the Behavior of Hardened Cement Paste of the cement slurry sets gained of annex solution silicon agent for anti gassing-out, porosity and permeability data all reduce, and illustrate that the inner aquation bonding quality of Behavior of Hardened Cement Paste is good.
Claims (10)
1. a Novel cementing liquid silicon leakage-proof mud, it is characterized in that, raw material containing following weight part: 95 ~ 105 parts of G class g cements, 5 ~ 15 parts of agent for anti gassing-out, 10 ~ 35 parts of intensity stabilization agent, 0.5 ~ 4 part of retardant, 0.1 ~ 0.2 part of defoamer, 0.5 ~ 2 part of dispersion agent, 5 ~ 10 parts of water retainings, 100 parts of water.
2. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 1, it is characterized in that, described agent for anti gassing-out is liquid silicon or silicon sol.
3. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 2, it is characterized in that, described agent for anti gassing-out is liquid silicon.
4. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 3, it is characterized in that, described agent for anti gassing-out liquid silicon is nano level liquid silica, is divided into two profiles number, and I type density is 1.20 ~ 1.25g/cm
3, colourless, II type density is 1.40 ~ 1.45g/cm
3, color is grey black.
5. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 1, it is characterized in that, described intensity stabilization agent is the amorphous silica that micro-silicon or purity are greater than 95%.
6. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 1, it is characterized in that, described retardant is AMPS polymkeric substance, and described defoamer is polyethers defoamer.
7. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 1, it is characterized in that, described dispersion agent is aldehyde-ketone condensate or naphthalene system dispersion agent.
8. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 1, is characterized in that, described water retaining is any one in AMPS polymkeric substance, keto-aldehyde condensation class, PVA.
9. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 1, it is characterized in that, also comprise 5 ~ 15 parts of weighting agents, described weighting agent is ultra fine grain material.
10. a kind of Novel cementing liquid silicon leakage-proof mud according to claim 1, it is characterized in that, also comprise density adjuster, described density adjuster is light-weight additive or weighting agent, described light-weight additive is drift pearl or flyash, the addition of described light-weight additive is 0 ~ 60 part, and described weighting agent is barite or powdered iron ore, the addition of described weighting agent 0 ~ 120 part.
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| CN110157396A (en) * | 2019-05-27 | 2019-08-23 | 四川华泽石油技术股份有限公司 | One kind is from leak stopping anti-channeling cementing fluid |
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| CN110590251A (en) * | 2019-09-11 | 2019-12-20 | 中国石油集团渤海钻探工程有限公司 | Low-density high-strength cement paste |
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| CN115959854A (en) * | 2021-10-09 | 2023-04-14 | 中石化石油工程技术服务有限公司 | Nano-magnesia dispersion liquid for well cementation, cement slurry, preparation method and application thereof |
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