CN104178096A - Low-density cement paste system - Google Patents
Low-density cement paste system Download PDFInfo
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- CN104178096A CN104178096A CN201310195457.8A CN201310195457A CN104178096A CN 104178096 A CN104178096 A CN 104178096A CN 201310195457 A CN201310195457 A CN 201310195457A CN 104178096 A CN104178096 A CN 104178096A
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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
- C09K8/473—Density reducing additives, e.g. for obtaining foamed cement compositions
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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
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- General Life Sciences & Earth Sciences (AREA)
- Inorganic Chemistry (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Consolidation Of Soil By Introduction Of Solidifying Substances Into Soil (AREA)
Abstract
The invention relates to a low-density cement paste system. The cement paste system comprises following components by weight: 100 parts of oil well cement, 65-106 parts of water, 6-40 parts of borosilicate hollow glass beads, 0.05-0.1 part of a silicone coupling agent, 25-40 parts of ultrafine cement, 10-20 parts of microsilica, 2-2.5 parts of a fluid loss agent, and 0.5-1.5 parts of sodium sulfate. The particle size of the microsilica having a SiO2 content larger than 94% is 0.1-0.5 [mu]m. The particle size of the ultrafine cement is 2-10 [mu]m. The density range of the cement paste is 1.20-1.60 g/cm<3>. The particle size of the borosilicate hollow glass beads is 25 [mu]m. The thickening time of the cement paste is adjustable. The 24-h compressive strength (taking 1.50 g/cm<3> as an example) is higher than 16 MPa. The cement paste system has good sedimentation stability and incompressibility, and improves construction safety of the low-density cement paste in well cementing operation.
Description
Technical field
The present invention relates to oilfield well completion technology well cementation field a kind of mortar architecture used, belong to low weight cement slurry.
Background technology
In recent years; the strata condition that hydrocarbon resources runs in exploratory development process is more and more complicated; the well cementing operation of Absorption Wells of Low Pressure, deep-well, ultra deep well, long interval isolation, under-balanced drilling is also more and more; for guaranteeing cementing operation safety; prevent from polluting; protection hydrocarbon zone, the application of high intensity low density mortar architecture is more and more extensive.
Floating pearl as lightening material main in high intensity low density grout, is mainly to collect by the floating separating method of flyash.In recent years, along with the increase to environmental protection requirement dynamics, the improvement of power station air flue emission facility, the output of floating at present pearl reduces increasingly, finally can stop the production to this byproduct.And owing to floating the existence of pearl, make grout under high-pressure situations, can not keep its design density, and along with the rising of pressure, floating pearl broken gradually, cement slurry density raises, and the mobility of grout is variation thereupon also, for cementing operation operation, brings unsafe factor.
As can be seen here, for solving the high intensity low density mortar architecture application bottleneck problem causing because floating pearl reason, must carry out the screening and optimizing research of novel hollow microballon, develop novel hollow glass microballon low weight cement slurry.
Borosilicate hollow glass micropearl particle diameter is 25 microns, it is a kind of Powdered Ultralight ceramic of ball of hollow, be the novel light material of a kind of of many uses, the excellent performance that gets up of developed recently, it is the main flow of 21st century advanced composite material.It has lightweight, the feature such as volume is large, thermal conductivity is low, ultimate compression strength is high, good fluidity.
Borosilicate hollow glass micropearl, as lightening material, can significantly reduce the density of grout.The good sphericity of glass microballon, epigranular, has reduced water requirement, has improved grout solid load, is conducive to the tightly packed of the system that realizes, and its bearing capacity is strong, more than withstand voltage maximum can reach 60MPa.Glass microballon is filling water mudstone hole further, forms finer and close Behavior of Hardened Cement Paste, can improve the over-all properties such as intensity, stability of low-density cement mortar; Due to the ball effect of pack grain, even under lower water-solid ratio, also can make grout there is good rheological simultaneously, can significantly improve cementing quality.
Summary of the invention
The object of this invention is to provide a kind of low weight cement slurry, cement slurry density scope 1.20～1.60g/cm
3.Cement slurry thickening time is adjustable, and ultimate compression strength is greater than 16MPa, and sedimentation stability is good, has incompressibility, has solved the problem that floating bead low-density cement mortar brings, and has further improved the working security of low-density cement mortar in well cementing operation.
Borosilicate hollow glass micropearl low weight cement slurry of the present invention, its component and proportioning are as follows by weight: 100 parts of oil well cements, 65～106 parts, water, 6～40 parts of borosilicate hollow glass micropearls, 0.05～0.1 part of silane coupling agent, 25～40 parts of superfine cements, 10～20 parts of micro-silicon, 2～2.5 parts of water retainings, 0.5～1.5 part, sodium sulfate; In above-mentioned composition, micro-silicon (SiO
2content is greater than 94%) grain diameter 0.1um～0.5um, superfine cement grain diameter 2um～10um.
The useful result of this low weight cement slurry is:
1. the superfine cement of the grain diameter 2um～10um in this system, hydratability is strong, and hydration rate is fast, and the early strength of low density water mudstone is significantly improved.
2. the micro-silicon of the grain diameter 0.1um～0.5um in this system, can filling concrete particle and hollow glass micropearl between space, increased the suspension stability of system and certain high temperature resistant property.
3. the silane coupling agent of 0.05～0.1 part in this system, improved the surface hydrophilicity of borosilicate hollow glass micropearl, between borosilicate hollow glass micropearl and cement granules, form covalent linkage bridge, be conducive to the tightly packed of the system that realizes, increase stability and the compactness of mortar architecture, progressive one has improved the ultimate compression strength of Behavior of Hardened Cement Paste.
4. novel borosilicate hollow glass micropearl anti-pressure ability is higher, this system has incompressibility, solved under floating bead low-density cement mortar high pressure and floated the problem that pearl is broken or water inlet causes cement slurry density to raise, further improved the working security of low-density cement mortar in well cementing operation.
5. novel borosilicate hollow glass micropearl low weight cement slurry, degree of mobilization is greater than 22cm, has the features such as satisfactory stability and fluid loss are little, can substitute routine and float pearl and prepare low-density cement mortar.
Embodiment
Embodiment 1:
Take the cement of 100 parts of weight, the borosilicate hollow glass micropearl of 40 parts of weight (25 microns), 40 parts of weight superfine cements, micro-silicon of 20 parts of weight, the silane coupling agent of 0.1 part of weight, the sodium sulfate of 2.0 parts of weight, the water of 106 parts of weight, the water retaining BCF-200S of 2.5 parts of weight, then add a certain amount of retardant BXR-200L, be mixed with 1.20g/cm
3low-density cement mortar.(medicine such as silane coupling agent, sodium sulfate and water retaining BCF-200S is commercially available)
1.20g/cm under table 1 differing temps
3grout over-all properties
Embodiment 2:
Take the cement of 100 parts of weight, the borosilicate hollow glass micropearl of 35 parts of weight (25 microns), 35 parts of weight superfine cements, micro-silicon of 15 parts of weight, the water of 95 parts of weight, the silane coupling agent of 0.08 part of weight, the sodium sulfate of 1.5 parts of weight, the water retaining BCF-200S of 2.5 parts of weight, then add a certain amount of retardant BXR-200L, be mixed with 1.30g/cm
3low-density cement mortar.(medicine such as silane coupling agent, sodium sulfate and water retaining BCF-200S is commercially available)
1.30g/cm under table 2 differing temps
3grout over-all properties
Embodiment 3
Take the cement of 100 parts of weight, the borosilicate hollow glass micropearl of 6-18 part weight (25 microns), 25-30 part weight superfine cement, micro-silicon of 10-12.5 part weight, the silane coupling agent of 0.05 part of weight, the sodium sulfate of 1.2 parts of weight, the water of 65-85 part weight, the water retaining BCF-200S of 2.0 parts of weight, then add a certain amount of retardant BXR-200L, be mixed with 1.40-1.60g/cm
3low-density cement mortar.(medicine such as silane coupling agent, sodium sulfate and water retaining BCF-200S is commercially available)
Claims (1)
1. a low weight cement slurry, it is characterized in that: the composition of this low weight cement slurry and proportioning are as follows by weight: 100 parts of oil well cements, 65～106 parts, water, 6～40 parts of borosilicate hollow glass micropearls, 0.05～0.1 part of silane coupling agent, 25～40 parts of superfine cements, 10～20 parts of micro-silicon, 2～2.5 parts of water retainings, 0.5～1.5 part, sodium sulfate;
SiO in above-mentioned composition
2it is 0.1um～0.5um that content is greater than micro-silicon grain particle diameter of 94%, and superfine cement grain diameter is 2um～10um, cement slurry density scope 1.20～1.60g/cm
3; Borosilicate hollow glass micropearl particle diameter is 25 microns.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195457.8A CN104178096A (en) | 2013-05-23 | 2013-05-23 | Low-density cement paste system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310195457.8A CN104178096A (en) | 2013-05-23 | 2013-05-23 | Low-density cement paste system |
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| CN104178096A true CN104178096A (en) | 2014-12-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310195457.8A Pending CN104178096A (en) | 2013-05-23 | 2013-05-23 | Low-density cement paste system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893694A (en) * | 2015-06-02 | 2015-09-09 | 中科华星新材料有限公司 | High-strength low-density cement paste |
| CN105255465A (en) * | 2015-11-17 | 2016-01-20 | 嘉华特种水泥股份有限公司 | Floating-bead-free low-density oil well cement paste |
| CN106554766A (en) * | 2015-09-28 | 2017-04-05 | 中国石油化工股份有限公司 | Anti-channeling emulsion, well cementation leakage-proof mud and preparation method thereof |
| CN106630806A (en) * | 2017-01-06 | 2017-05-10 | 中国海洋石油总公司 | Cement mixed component and application thereof |
| CN108947579A (en) * | 2018-09-20 | 2018-12-07 | 扬州工业职业技术学院 | A kind of novel light, resistance to compression, insulating foam concrete segment |
| CN109626883A (en) * | 2019-01-23 | 2019-04-16 | 长江大学 | A kind of oil base landwaste cement slurry and preparation method thereof |
| CN110590311A (en) * | 2019-10-17 | 2019-12-20 | 天津市金晟华水泥股份有限公司 | Cement and preparation method thereof |
| CN111019616A (en) * | 2019-11-15 | 2020-04-17 | 中国石油化工集团有限公司 | Low-density cement slurry for well cementation operation and cement composition for well cementation operation |
| CN111362607A (en) * | 2020-03-18 | 2020-07-03 | 北京市燕通建筑构件有限公司 | Light solid waste non-sintered ceramsite and preparation method thereof |
| CN112632793A (en) * | 2020-12-30 | 2021-04-09 | 中国矿业大学 | Off-line calculation method for coal bunker coal material bulk density |
Citations (3)
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|---|---|---|---|---|
| CN101792660A (en) * | 2010-03-04 | 2010-08-04 | 大庆石油管理局 | Multi-functional nanometer oil well cement slurry |
| CN102191026A (en) * | 2011-03-28 | 2011-09-21 | 曾琛 | Water injection well on-line profile control agent prepared from oil field sewage treatment waste residues |
| CN102516964A (en) * | 2011-12-06 | 2012-06-27 | 中国石油集团渤海钻探工程有限公司 | Low-density and high-strength cement paste |
-
2013
- 2013-05-23 CN CN201310195457.8A patent/CN104178096A/en active Pending
Patent Citations (3)
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|---|---|---|---|---|
| CN101792660A (en) * | 2010-03-04 | 2010-08-04 | 大庆石油管理局 | Multi-functional nanometer oil well cement slurry |
| CN102191026A (en) * | 2011-03-28 | 2011-09-21 | 曾琛 | Water injection well on-line profile control agent prepared from oil field sewage treatment waste residues |
| CN102516964A (en) * | 2011-12-06 | 2012-06-27 | 中国石油集团渤海钻探工程有限公司 | Low-density and high-strength cement paste |
Non-Patent Citations (1)
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| 化学工业部科学技术情报研究所: "《合成树脂及塑料手册-化工产品品种基础资料》", 31 December 1979 * |
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104893694A (en) * | 2015-06-02 | 2015-09-09 | 中科华星新材料有限公司 | High-strength low-density cement paste |
| CN104893694B (en) * | 2015-06-02 | 2018-05-29 | 中科华星新材料有限公司 | A kind of high intensity low density cement mortar |
| CN106554766A (en) * | 2015-09-28 | 2017-04-05 | 中国石油化工股份有限公司 | Anti-channeling emulsion, well cementation leakage-proof mud and preparation method thereof |
| CN106554766B (en) * | 2015-09-28 | 2019-03-12 | 中国石油化工股份有限公司 | Anti-channeling lotion, well cementation leakage-proof mud and preparation method thereof |
| CN105255465B (en) * | 2015-11-17 | 2018-12-14 | 嘉华特种水泥股份有限公司 | A kind of no floating bead low-density oil-well cement slurry |
| CN105255465A (en) * | 2015-11-17 | 2016-01-20 | 嘉华特种水泥股份有限公司 | Floating-bead-free low-density oil well cement paste |
| CN106630806A (en) * | 2017-01-06 | 2017-05-10 | 中国海洋石油总公司 | Cement mixed component and application thereof |
| CN106630806B (en) * | 2017-01-06 | 2019-04-26 | 中国海洋石油集团有限公司 | A kind of cement mixing component and its application |
| CN108947579A (en) * | 2018-09-20 | 2018-12-07 | 扬州工业职业技术学院 | A kind of novel light, resistance to compression, insulating foam concrete segment |
| CN109626883A (en) * | 2019-01-23 | 2019-04-16 | 长江大学 | A kind of oil base landwaste cement slurry and preparation method thereof |
| CN110590311A (en) * | 2019-10-17 | 2019-12-20 | 天津市金晟华水泥股份有限公司 | Cement and preparation method thereof |
| CN111019616A (en) * | 2019-11-15 | 2020-04-17 | 中国石油化工集团有限公司 | Low-density cement slurry for well cementation operation and cement composition for well cementation operation |
| CN111362607A (en) * | 2020-03-18 | 2020-07-03 | 北京市燕通建筑构件有限公司 | Light solid waste non-sintered ceramsite and preparation method thereof |
| CN112632793A (en) * | 2020-12-30 | 2021-04-09 | 中国矿业大学 | Off-line calculation method for coal bunker coal material bulk density |
| CN112632793B (en) * | 2020-12-30 | 2021-11-02 | 中国矿业大学 | Off-line calculation method for coal bunker coal material bulk density |
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Application publication date: 20141203 |
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