Sectional Design for Anti-Gas Channeling Cementing

Zhou Shiming; Li Gensheng; Chu Yongtao

doi:10.3969/j.issn.1001-0890.2013.05.010

Volume 41 Issue 5

Sep. 2013

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Petroleum Drilling Techniques > 2013 > 41(5): 52-55. > DOI: 10.3969/j.issn.1001-0890.2013.05.010

Zhou Shiming, Li Gensheng, Chu Yongtao. Sectional Design for Anti-Gas Channeling Cementing[J]. Petroleum Drilling Techniques, 2013, 41(5): 52-55. DOI: 10.3969/j.issn.1001-0890.2013.05.010

Citation:

Zhou Shiming, Li Gensheng, Chu Yongtao. Sectional Design for Anti-Gas Channeling Cementing[J]. Petroleum Drilling Techniques, 2013, 41(5): 52-55. DOI: 10.3969/j.issn.1001-0890.2013.05.010

Citation:

Zhou Shiming, Li Gensheng, Chu Yongtao. Sectional Design for Anti-Gas Channeling Cementing[J]. Petroleum Drilling Techniques, 2013, 41(5): 52-55. DOI: 10.3969/j.issn.1001-0890.2013.05.010

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Sectional Design for Anti-Gas Channeling Cementing

1.
School of Petroleum Engineering, China University of Petroleum(Beijing), Beijing, 102249, China;
2.
Sinopec Research Institute of Petroleum Engineer, Beijing, 100101, China

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Received Date: February 16, 2013
Revised Date: August 18, 2013

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Abstract

Abstract

To guide anti-gas channeling cementing design,and avoid circulation loss or underbalanced gas channeling,sectional design method for anti-gas channeling cementing was developed.Since the slurry temperature in annulus varies with depth,the build-up of gel strength and pressure drop are different at different depths,the hydraulic pressure loss of slurry column is calculated in sections.By adjusting slurry performance and setting the growth of gel strength to be linear from top to bottom of slurry column,and making gel strength of tail slurry up to 240 Pa,the average gel strength of lead slurry is less than 48 Pa.An accurate calculation model of hydraulic pressure loss of slurry was established,and sectional design and balanced cementing methods were developed.The methods have been used to cementing design in more than 200 gas wells in northeastern Sichuan province,the success rate of anti-gas channeling has been 100%.The method provides an effective calculation model for anti-gas channeling cementing design.
- well cementing,
- cement slurry,
- gel strength,
- gas channeling,
- section

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References

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