CN101260292A - Coagulated cake forming agent and its preparing process and usage - Google Patents
Coagulated cake forming agent and its preparing process and usage Download PDFInfo
- Publication number
- CN101260292A CN101260292A CNA2008100473438A CN200810047343A CN101260292A CN 101260292 A CN101260292 A CN 101260292A CN A2008100473438 A CNA2008100473438 A CN A2008100473438A CN 200810047343 A CN200810047343 A CN 200810047343A CN 101260292 A CN101260292 A CN 101260292A
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- CN
- China
- Prior art keywords
- forming agent
- cake
- cake forming
- naoh
- well cementing
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- Curing Cements, Concrete, And Artificial Stone (AREA)
Abstract
The invention discloses cake agglomeration forming agent, a preparation method and use thereof. NaOH, Na2SO4 and Na2SIO3.9H2O are dissolved into the water to mix and produce the cake agglomeration forming agent; in the cake agglomeration forming agent, NaOH is between 1 and 3 percent, Na2SO4 is between 0.5 to 1.5 percent, the Na2SIO3.9H2O is between 2 and 4 percent, and the remainder is water (the above proportion is mass percentage). The produced cake agglomeration forming agent is taken as petroleum well cementing pad fluid, and the bonding strength of two interfaces of well cementing can be improved through complicated interfacial physical and chemical reactions (mainly an ion reaction which forms new cement) with corresponding substances in a modified drilling fluid mud cake. The invention realizes a non-MTC method to improve the bonding strength of the two interfaces of well cementing and can avoid the problems of brittleness and high temperature performance variation and so on of the MTC condensate, thereby contributing to the improvement of the bonding quality of the two interfaces of well cementing and settling a solid foundation for the exploitation of petroleum natural gas.
Description
Technical field
The present invention relates to a kind of coagulated cake forming agent and its production and use, belong to the petroleum engineering field, also belong to the coal-seam gas engineering.
Background technology
At present, the public method that is used to solve well cementation second interface problem has following two classes:
The first kind is physics or the mechanical process of using always, promptly turbulence replacement, wall shearing, moving casing, with scraper, the extruding of expanding, cementing technology method such as fiber reinforced.The appearance of these methods is beyond doubt very useful to the packing of oil gas well annular space, but in view of the limitation of well cementation second interface the complex nature of the problem and construction condition, the effect that they can reach separately is more limited.
Second class is special MTC method, it has solved the compatibility problem of drilling fluid and grout, realize the whole glued of MTC slurry-multifunctional drilling fluid mud cake-stratum, significantly improved the bonding quality of well cementation second interface, also reduced the processing cost of boring the back drilling fluid.But, intrinsic problems such as the embrittlement of MTC cured body, high-temperature behavior variation may be scurried mutually because of operations such as perforation cause even more serious interlayer again, influence oil-gas mining effect even abandoned well, this has seriously restricted the integrated application effect of MTC technology to a certain extent and has applied.
Summary of the invention
The purpose of this invention is to provide a kind of coagulated cake forming agent and its production and use, by realize making mud cake become cake with fixed attention imitatively, the second interface consolidation strength thereby raising is cemented the well satisfies oil and gas exploitation.
For realizing the object of the invention, the invention provides a kind of coagulated cake forming agent, comprise 1%～3% NaOH, 0.5%～1.5%Na
2SO
4With 2%～4%Na
2SiO
39H
2O, all the other are water, above ratio is a mass percent.
This coagulated cake forming agent prepares by the following method: get NaOH, Na
2SO
4And Na
2SiO
39H
2The water-soluble mixed coagulated cake forming agent that gets of O, NaOH is 1%～3% in this coagulated cake forming agent, Na
2SO
4Be 0.5%～1.5%, Na
2SiO
39H
2O is 2%～4%, and all the other are water, and above ratio is a mass percent.
With coagulated cake forming agent as the oil spearhead of cementing the well, by with modification drilling fluid mud cake in the surface physics chemical reaction (mainly being that ionic reaction forms new cementing matter) of complexity of respective substance improve well cementation second interface consolidation strength.
The coagulated cake forming agent that improves well cementation second interface consolidation strength provided by the invention, realized that non-MTC method improves well cementation second interface consolidation strength, avoid problems such as the embrittlement of MTC cured body, high-temperature behavior variation, help improving well cementation second interface bonding quality, for oil and gas exploitation has been established solid basis.Raw material sources required for the present invention are extensive, and are simple and convenient, are suitable for scale operation.
Embodiment
Embodiment
Get NaOH, Na
2SO
4And Na
2SiO
39H
2The water-soluble mixed coagulated cake forming agent that gets of O, NaOH is 1%～3% in this coagulated cake forming agent, Na
2SO
4Be 0.5%～1.5%, Na
2SiO
39H
2O is 2%～4%, and above ratio is a mass percent.
If certain mouthful of well well cementation needs spearhead 6m
3, at first by mass percentage with 2%NaOH, 1.5%Na
2SO
4, 3%Na
2SiO
39H
2O and water are mixed with coagulated cake forming agent 6m
3, then the 6m for preparing
3Coagulated cake forming agent uses with spearhead as this well well cementation can improve well cementation second interface consolidation strength.
Claims (3)
1. a coagulated cake forming agent comprises 1%～3% NaOH, 0.5%～1.5%Na
2SO
4With 2%～4%Na
2SiO
39H
2O, all the other are water, above ratio is a mass percent.
2. the preparation method of the described coagulated cake forming agent of claim 1 is characterized in that may further comprise the steps: get NaOH, Na
2SO
4And Na
2SiO
39H
2The water-soluble mixed coagulated cake forming agent that gets of O, NaOH is 1%～3% in this coagulated cake forming agent, Na
2SO
4Be 0.5%～1.5%, Na
2SiO
39H
2O is 2%～4%, and all the other are water, and above ratio is a mass percent.
3. the application of the described coagulated cake forming agent of claim 1 in improving well cementation second interface consolidation strength.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100473438A CN101260292B (en) | 2008-04-16 | 2008-04-16 | Coagulated cake forming agent and its preparing process and usage |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100473438A CN101260292B (en) | 2008-04-16 | 2008-04-16 | Coagulated cake forming agent and its preparing process and usage |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101260292A true CN101260292A (en) | 2008-09-10 |
| CN101260292B CN101260292B (en) | 2010-07-28 |
Family
ID=39960993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100473438A Expired - Fee Related CN101260292B (en) | 2008-04-16 | 2008-04-16 | Coagulated cake forming agent and its preparing process and usage |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101260292B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766443A (en) * | 2012-07-26 | 2012-11-07 | 中国石油天然气集团公司 | Hardener for mud cakes of drilling fluid |
| CN102863593A (en) * | 2012-09-18 | 2013-01-09 | 中国地质大学（武汉） | Sludge cake curing agent, and preparation and application method thereof |
| CN106928949A (en) * | 2017-02-21 | 2017-07-07 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of mud cake solidification Cementing system and preparation method thereof |
| CN107353884A (en) * | 2017-05-31 | 2017-11-17 | 中国石油天然气集团公司 | Interface affinity agent is used in the well cementation of horizontal well water-base drilling fluid |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| RU2107708C1 (en) * | 1996-02-26 | 1998-03-27 | Открытое акционерное общество "ПермНИПИнефть" | Reagent for treating drilling muds |
| CN1232465C (en) * | 2002-12-24 | 2005-12-21 | 清华大学 | binary mixed coagulated stones and wet cement and method for production, deposit, transportation use and application |
-
2008
- 2008-04-16 CN CN2008100473438A patent/CN101260292B/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102766443A (en) * | 2012-07-26 | 2012-11-07 | 中国石油天然气集团公司 | Hardener for mud cakes of drilling fluid |
| CN102766443B (en) * | 2012-07-26 | 2013-12-11 | 中国石油天然气集团公司 | Hardener for mud cakes of drilling fluid |
| CN102863593A (en) * | 2012-09-18 | 2013-01-09 | 中国地质大学（武汉） | Sludge cake curing agent, and preparation and application method thereof |
| CN102863593B (en) * | 2012-09-18 | 2014-08-13 | 中国地质大学（武汉） | Sludge cake curing agent, and preparation and application method thereof |
| CN106928949A (en) * | 2017-02-21 | 2017-07-07 | 中国石油集团川庆钻探工程有限公司工程技术研究院 | A kind of mud cake solidification Cementing system and preparation method thereof |
| CN107353884A (en) * | 2017-05-31 | 2017-11-17 | 中国石油天然气集团公司 | Interface affinity agent is used in the well cementation of horizontal well water-base drilling fluid |
| CN107353884B (en) * | 2017-05-31 | 2020-06-23 | 中国石油天然气集团公司 | Interfacial affinity agent for cementing of water-based drilling fluid of horizontal well |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101260292B (en) | 2010-07-28 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20110416 |