Advances in cementing technology for adjustment wells

Home > Archive>Volume 46, Issue 4, 2019 >30-36

Advances in cementing technology for adjustment wells
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                        LI Dehong1LI Dehong
SINOPEC Huabei Oilfield Service Corporation, Technology Service Company, Zhengzhou Henan , China
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JIANG Xinli1JIANG Xinli
SINOPEC Huabei Oilfield Service Corporation, Technology Service Company, Zhengzhou Henan , China
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LI Mingzhong1LI Mingzhong
SINOPEC Huabei Oilfield Service Corporation, Technology Service Company, Zhengzhou Henan , China
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XIAO Wufeng2XIAO Wufeng
SINOPEC Huabei Oilfield Service Corporation, Henan Drilling Company, Nanyang Henan , China
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JIN Yanxia2JIN Yanxia
SINOPEC Huabei Oilfield Service Corporation, Henan Drilling Company, Nanyang Henan , China
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LI Ji1LI Ji
SINOPEC Huabei Oilfield Service Corporation, Technology Service Company, Zhengzhou Henan , China
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SONG Wenyu1SONG Wenyu
SINOPEC Huabei Oilfield Service Corporation, Technology Service Company, Zhengzhou Henan , China
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Affiliation:1.SINOPEC Huabei Oilfield Service Corporation, Technology Service Company, Zhengzhou Henan 450006, China; 2.SINOPEC Huabei Oilfield Service Corporation, Henan Drilling Company, Nanyang Henan 473000, China
Clc Number:P634；TE249
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Abstract:

Adjustment wells are mainly used for improvement of the well pattern through regrouping, and for fine production through subdivision of the payzone at the late development stage of the old oil fields so as to achieve stable or higher productivity. With the existing injectionproduction system and production status, the cement quality of the adjustment wells cannot ensure effective sealing between layers due to the complex formation pressure system and diverse formation fluid compositions. Based on the analysis of various technical difficulties faced by adjustment well cementation and their effects on cementing quality, this paper summarizes the existing problems with the cementing quality and the main technical measures to improve it at present, and put forward the technical measures and research directions to be taken in the next step, which lay a technical foundation for improving the cementing quality of adjustment wells.

Key words:adjustment well; cementing quality; water channeling; cementing fluid; technical measures

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Received:January 03,2019
Revised:February 22,2019
Adopted:March 04,2019
Online: April 16,2019
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