CN101555105A - Corrosion-proof and unshrinking well cement and preparation method thereof - Google Patents
Corrosion-proof and unshrinking well cement and preparation method thereof Download PDFInfo
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- CN101555105A CN101555105A CNA2009100717649A CN200910071764A CN101555105A CN 101555105 A CN101555105 A CN 101555105A CN A2009100717649 A CNA2009100717649 A CN A2009100717649A CN 200910071764 A CN200910071764 A CN 200910071764A CN 101555105 A CN101555105 A CN 101555105A
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- parts
- shrinking
- anticorrosive
- grog
- cementing concrete
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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
- C04B7/00—Hydraulic cements
- C04B7/14—Cements containing slag
- C04B7/147—Metallurgical slag
- C04B7/153—Mixtures thereof with other inorganic cementitious materials or other activators
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P40/00—Technologies relating to the processing of minerals
- Y02P40/10—Production of cement, e.g. improving or optimising the production methods; Cement grinding
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Ceramic Engineering (AREA)
- Inorganic Chemistry (AREA)
- Materials Engineering (AREA)
- Structural Engineering (AREA)
- Organic Chemistry (AREA)
- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention provides a corrosion-proof and unshrinking well cement and a preparation method thereof, relating to a corrosion-proof and unshrinking material used for fixing a well and a preparation method thereof. The invention solves the problems that: the shrinkage ratio of the existing well cement is high, thus influencing the well fixing effect; and the corrosion-proof effect is poor. The well cement is prepared by grog, an expanding agent and granulated blast-furnace slag. The cement is prepared by the following steps of: respectively grinding the granulated blast-furnace slag and grog into fine power; and then obtaining the corrosion-proof and unshrinking well cement by mixing the grog, slay fine power and the expanding agent. The cement has the advantages of good corrosion-proof performance and low shrinkage ratio.
Description
Technical field
The present invention relates to a kind of anticorrosive, non-shrinking well cementing material and preparation method thereof.
Background technology
The existing cement that is used to cement the well is divided into two kinds: a kind of A of being level oil well cement, another kind are G level oil well cements.But all there is the shrinking percentage height in these two kinds of cement, influence well cementation effect, and not corrosion resistant defective.(20 ℃, 1.0 normal atmosphere, 15 days) at normal temperatures and pressures, A level oil well cement shrinking percentage is 3000 * 10
-6, G level oil well cement shrinking percentage is 2350 * 10
-6Under temperature and coupling pressure (45 ℃, 20.0MPa, 15 days), A level oil well cement shrinking percentage is 5000 * 10
-6, G level oil well cement shrinking percentage is 4710 * 10
-6Contraction is to cause the early stage rimose major cause of cement-based material, particularly under downhole temperature and coupling pressure effect, directly destroys the sealing process of cement mantle, thereby influences cementing quality.
A level oil well cement and G level oil well cement all are by portland cement clinker [tricalcium silicate (chemical formula 3CaOSiO
2), Dicalcium Phosphate (Feed Grade) (Chemical formula 2 CaOSiO
2), tricalcium aluminate (chemical formula 3CaOAl
2O
3), tetracalcium aluminoferrite (chemical formula 4CaOAl
2O
3Fe
2O
3)] four kinds of mineral compositions.Cement stone is adopted under the effect of liquid at underground water that contains certain salinity and notes, and cement stone subjects to corrosion and destruction in various degree.By the stratum water examination is found that water quality is rich in the ion composition (Cl that cement stone is had the deep-etching effect
-, SO
4 2-, HCO
3 -Deng), these corrosive mediums can cause that cement mantle corrodes gradually, cause casing corrosion to destroy subsequently, reduce oil well work-ing life.
Summary of the invention
The present invention because the defective of high influence well cementation effect of shrinking percentage and anti-corrosion effects difference, and provides a kind of anticorrosive, non-shrinking cementing concrete and preparation method thereof in order to solve existing method cementing concrete and to exist.
Anticorrosive, the non-shrinking cementing concrete of the present invention is to be made by 60～90 parts grog, 1～4 part swelling agent and 10～30 parts granulated blast-furnace slag according to parts by weight; Forming by 50～60 parts tricalcium silicate, 16～20 parts Dicalcium Phosphate (Feed Grade), 6～9 parts tricalcium aluminate, 9～12 parts tetracalcium aluminoferrite and 4～10 parts gypsum of described grog according to mass fraction.
Anticorrosive, the non-shrinking cementing concrete of the present invention is prepared in accordance with the following methods: according to parts by weight the grog of 10～30 parts granulated blast-furnace slag and 60～90 parts is worn into specific surface area respectively for greater than 320m
2.kg
-1Fine powder, again grog, the slag fine powder swelling agent with 1～4 part is mixed; Promptly obtain anticorrosive, non-shrinking cementing concrete; Forming by 50～60 parts tricalcium silicate, 16～20 parts Dicalcium Phosphate (Feed Grade), 6～9 parts tricalcium aluminate, 9～12 parts tetracalcium aluminoferrite and 4～10 parts gypsum of described grog according to mass fraction.
Anticorrosive, the non-shrinking cementing concrete of the present invention has the following advantages: 1, corrosion resistance is good: a, impervious ability use the back two weeks that the infiltration of water only is 1980 coulombs well; B, use back two weeks intensity are up to 61.2MPa; C, porosity only are 31.07%, and be fine and close more; 2, more be applicable to well cementation: shrinking percentage is low, does not shrink in back three days in use, and using the shrinking percentage of back two weeks only is 90 * 10
-6
Embodiment
Technical solution of the present invention is not limited to following cited embodiment, also comprises the arbitrary combination between each embodiment.
Embodiment one: anticorrosive, the non-shrinking cementing concrete of present embodiment is to be made by 60～90 parts grog, 1～4 part swelling agent and 10～30 parts granulated blast-furnace slag according to parts by weight; Forming by 50～60 parts tricalcium silicate, 16～20 parts Dicalcium Phosphate (Feed Grade), 6～9 parts tricalcium aluminate, 9～12 parts tetracalcium aluminoferrite and 4～10 parts gypsum of described grog according to mass fraction.
Embodiment two: anticorrosive, the non-shrinking cementing concrete of present embodiment is to be made by 70～80 parts grog, 2～3 parts swelling agent and 15～25 parts granulated blast-furnace slag according to parts by weight; Forming by 52～58 parts tricalcium silicate, 17～19 parts Dicalcium Phosphate (Feed Grade), 7～8 parts tricalcium aluminate, 10～11 parts tetracalcium aluminoferrite and 6～8 parts gypsum of described grog according to mass fraction.
Embodiment three: anticorrosive, the non-shrinking cementing concrete of present embodiment is to be made by 75 parts grog, 2.5 parts swelling agent and 20 parts granulated blast-furnace slag according to parts by weight; Forming by 55 parts tricalcium silicate, 18 parts Dicalcium Phosphate (Feed Grade), 7.5 parts tricalcium aluminate, 10.5 parts tetracalcium aluminoferrite and 7 parts gypsum of described grog according to mass fraction.
Embodiment four: present embodiment and embodiment one, two or threes' difference is: swelling agent is the UEA expansive agent for cement slurry.Other is identical with embodiment one, two or three.
The UEA expansive agent for cement slurry of present embodiment is provided by China Building Material Scientific Research General Institute.
Embodiment five: anticorrosive, the non-shrinking cementing concrete of present embodiment is prepared in accordance with the following methods: according to parts by weight the grog of 10～30 parts granulated blast-furnace slag and 60～90 parts is worn into specific surface area respectively for greater than 320m
2Kg
-1Fine powder, again grog, the slag fine powder swelling agent with 1～4 part is mixed; Promptly obtain anticorrosive, non-shrinking cementing concrete; Forming by 50～60 parts tricalcium silicate, 16～20 parts Dicalcium Phosphate (Feed Grade), 6～9 parts tricalcium aluminate, 9～12 parts tetracalcium aluminoferrite and 4～10 parts gypsum of described grog according to mass fraction.
Embodiment six: the difference of present embodiment and embodiment five is: according to parts by weight is that the grog of 15～25 parts granulated blast-furnace slag and 70～80 parts is worn into specific surface area respectively is 330～400m
2Kg
-1Fine powder.Other is identical with embodiment five.
Embodiment seven: the difference of present embodiment and embodiment five is: according to parts by weight is that the grog of 20 parts granulated blast-furnace slag and 75 parts is worn into specific surface area respectively is 380m
2Kg
-1Fine powder.Other is identical with embodiment five.
Embodiment eight: present embodiment with the difference of embodiment six to seven is: grog, the slag fine powder swelling agent with 2～3 parts is mixed again.Other is identical with embodiment six to seven.
Embodiment nine: present embodiment with the difference of embodiment six to seven is: grog, the slag fine powder swelling agent with 2.5 parts is mixed again.Other is identical with embodiment six to seven.
Embodiment ten: the difference of present embodiment and embodiment eight to nine is: being made up of 52～58 parts tricalcium silicate, 17～19 parts Dicalcium Phosphate (Feed Grade), 7～8 parts tricalcium aluminate, 10～11 parts tetracalcium aluminoferrite and 6～8 parts gypsum according to mass fraction of described grog.Other is identical with embodiment eight to nine.
Embodiment 11: the difference of present embodiment and embodiment eight to nine is: being made up of 55 parts tricalcium silicate, 18 parts Dicalcium Phosphate (Feed Grade), 7.5 parts tricalcium aluminate, 10.5 parts tetracalcium aluminoferrite and 7 parts gypsum according to mass fraction of described grog.Other is identical with embodiment eight to nine.
Embodiment 12: the difference of present embodiment and embodiment five, six, seven, eight, nine, ten or 11 is: swelling agent is the UEA expansive agent for cement slurry.Other is identical with embodiment five, six, seven, eight, nine, ten or 11.
The UEA expansive agent for cement slurry of present embodiment is provided by China Building Material Scientific Research General Institute.
Embodiment 13: anticorrosive, the non-shrinking cementing concrete of present embodiment is prepared in accordance with the following methods: according to parts by weight the grog of 15 parts granulated blast-furnace slag and 80 parts being worn into specific surface area respectively is 350m
2Kg
-1Fine powder, again grog, the slag fine powder swelling agent with 3 parts is mixed; Promptly obtain anticorrosive, non-shrinking cementing concrete; Forming by 55 parts tricalcium silicate, 18 parts Dicalcium Phosphate (Feed Grade), 7 parts tricalcium aluminate, 10 parts tetracalcium aluminoferrite and 5 parts gypsum of described grog according to mass fraction.
Anticorrosive with present embodiment preparation, it is 31.07% that non-shrinking cementing concrete is made stone test porosity, total hole amount is 0.1991mL/g, the mean pore size of hole is 21.3nm, and adopt same procedure to make the stone porosity with A level oil well cement is 34.99%, total hole amount is 0.2270mL/g, the mean pore size of hole is 24.3nm, adopting same procedure to make the stone porosity with G level oil well cement is 35.01%, total hole amount is 0.2272mL/g, the mean pore size of hole is 24.8nm, and the anticorrosive of present embodiment preparation is described, non-shrinking cementing concrete is finer and close more than the cement of prior art.
Anticorrosive, the non-shrinking cementing concrete of present embodiment preparation is made stone carry out testing permeability (is permeating medium with water), and compare with the cement of prior art, correlation data is as shown in table 1,
The cement of the data declaration present embodiment preparation of table 1 is better than the cement impervious performance of prior art.
The contrast of table 1 cement stone perviousness
Anticorrosive, the non-shrinking cementing concrete of present embodiment preparation is made stone carry out the intensive properties test, and compare with the cement of prior art, correlation data is as shown in table 2, and the cement of the data declaration present embodiment preparation of table 2 is than the strength of cement height of prior art.
The contrast of table 2 cement strength
Anticorrosive, the non-shrinking cementing concrete of present embodiment preparation is made stone carry out the intensive properties test, and compare with the cement of prior art, correlation data is as shown in table 3, and the cement of the data declaration present embodiment preparation of table 3 is lower than the shrinking percentage of prior art, more is applicable to well cementation.
Table 3 cement stone shrinking percentage
| 1 day | 3 days | 15 days | |
| A level oil well cement | Do not shrink | 2180×10 -6 | 4710×10 -6 |
| G level oil well cement | Do not shrink | 2060×10 -6 | 4600×10 -6 |
| The cement of present embodiment preparation | Do not shrink | Do not shrink | 90×10 -6 |
Above experimental data explanation, anticorrosive, the non-shrinking cementing concrete corrosion resistance of present embodiment preparation is good, more is applicable to well cementation.
Claims (10)
1, a kind of anticorrosive, non-shrinking cementing concrete is characterized in that anticorrosive, non-shrinking cementing concrete is to be made by 60～90 parts grog, 1～4 part swelling agent and 10～30 parts granulated blast-furnace slag according to parts by weight; Forming by 50～60 parts tricalcium silicate, 16～20 parts Dicalcium Phosphate (Feed Grade), 9～12 parts tetracalcium aluminoferrite and 4～10 parts gypsum of described grog according to mass fraction.
2, a kind of anticorrosive, non-shrinking cementing concrete according to claim 1 is characterized in that anticorrosive, non-shrinking cementing concrete is to be made by 70～80 parts grog, 2～3 parts swelling agent and 15～25 parts granulated blast-furnace slag according to parts by weight; Forming by 52～58 parts tricalcium silicate, 17～19 parts Dicalcium Phosphate (Feed Grade), 7～8 parts tricalcium aluminate, 10～11 parts tetracalcium aluminoferrite and 6～8 parts gypsum of described grog according to mass fraction.
3, a kind of anticorrosive, non-shrinking cementing concrete according to claim 1 is characterized in that anticorrosive, non-shrinking cementing concrete is to be made by 75 parts grog, 2.5 parts swelling agent and 20 parts granulated blast-furnace slag according to parts by weight; Forming by 55 parts tricalcium silicate, 18 parts Dicalcium Phosphate (Feed Grade), 7.5 parts tricalcium aluminate, 10.5 parts tetracalcium aluminoferrite and 7 parts gypsum of described grog according to mass fraction.
4, according to claim 1,2 or 3 described a kind of anticorrosive, non-shrinking cementing concretes, it is characterized in that swelling agent is the UEA expansive agent for cement slurry.
5, a kind of preparation method of anticorrosive, non-shrinking cementing concrete is characterized in that anticorrosive, non-shrinking cementing concrete is prepared in accordance with the following methods: according to parts by weight the grog of 10～30 parts granulated blast-furnace slag and 60～90 parts is worn into specific surface area respectively for greater than 320m
2Kg
-1Fine powder, again grog, the slag fine powder swelling agent with 1～4 part is mixed; Promptly obtain anticorrosive, non-shrinking cementing concrete; Forming by 50～60 parts tricalcium silicate, 16～20 parts Dicalcium Phosphate (Feed Grade), 6～9 parts tricalcium aluminate, 9～12 parts tetracalcium aluminoferrite and 4～10 parts gypsum of described grog according to mass fraction.
6, the preparation method of a kind of anticorrosive, non-shrinking cementing concrete according to claim 5 is characterized in that according to parts by weight it being that the grog of 15～25 parts granulated blast-furnace slag and 70～80 parts is worn into specific surface area respectively is 330～400m
2Kg
-1Fine powder.
7, the preparation method of a kind of anticorrosive, non-shrinking cementing concrete according to claim 5 is characterized in that according to parts by weight it being that the grog of 20 parts granulated blast-furnace slag and 75 parts is worn into specific surface area respectively is 380m
2Kg
-1Fine powder.
8, the preparation method of a kind of anticorrosive, non-shrinking cementing concrete according to claim 6 is characterized in that grog, the slag fine powder swelling agent with 2～3 parts is mixed again.
9, the preparation method of a kind of anticorrosive, non-shrinking cementing concrete according to claim 8 is characterized in that being made up of 55 parts tricalcium silicate, 18 parts Dicalcium Phosphate (Feed Grade), 7.5 parts tricalcium aluminate, 10.5 parts tetracalcium aluminoferrite and 7 parts gypsum according to mass fraction of described grog.
10, according to the preparation method of claim 5,6,7,8 or 9 described a kind of anticorrosive, non-shrinking cementing concretes, it is characterized in that swelling agent is the UEA expansive agent for cement slurry.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100717649A CN101555105A (en) | 2009-04-10 | 2009-04-10 | Corrosion-proof and unshrinking well cement and preparation method thereof |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2009100717649A CN101555105A (en) | 2009-04-10 | 2009-04-10 | Corrosion-proof and unshrinking well cement and preparation method thereof |
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| CN101555105A true CN101555105A (en) | 2009-10-14 |
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| CNA2009100717649A Pending CN101555105A (en) | 2009-04-10 | 2009-04-10 | Corrosion-proof and unshrinking well cement and preparation method thereof |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145989B (en) * | 2010-02-08 | 2013-01-30 | 四川嘉华企业（集团）股份有限公司 | Corrosion resistant cement system and application thereof |
| CN103740352A (en) * | 2013-12-06 | 2014-04-23 | 中国石油集团渤海钻探工程有限公司 | Expansion oil well cement with temperature resistance |
| CN104710120A (en) * | 2014-11-30 | 2015-06-17 | 保定保兴油田固井材料制造有限公司 | BFS oil well cement |
-
2009
- 2009-04-10 CN CNA2009100717649A patent/CN101555105A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102145989B (en) * | 2010-02-08 | 2013-01-30 | 四川嘉华企业（集团）股份有限公司 | Corrosion resistant cement system and application thereof |
| CN103740352A (en) * | 2013-12-06 | 2014-04-23 | 中国石油集团渤海钻探工程有限公司 | Expansion oil well cement with temperature resistance |
| CN104710120A (en) * | 2014-11-30 | 2015-06-17 | 保定保兴油田固井材料制造有限公司 | BFS oil well cement |
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Open date: 20091014 |