Volume 34 Issue 4
Jul.  2017
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LU Haichuan, ZHAO Yue, SONG Weibin, GAO Jichao, HU Zhonghua, HUO Mingjiang. Study and Evaluation of a New Anti-Water Channeling Material for Well Cementing[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(4): 75-79,84. doi: 10.3969/j.issn.1001-5620.2017.04.014
Citation: LU Haichuan, ZHAO Yue, SONG Weibin, GAO Jichao, HU Zhonghua, HUO Mingjiang. Study and Evaluation of a New Anti-Water Channeling Material for Well Cementing[J]. DRILLING FLUID & COMPLETION FLUID, 2017, 34(4): 75-79,84. doi: 10.3969/j.issn.1001-5620.2017.04.014
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Study and Evaluation of a New Anti-Water Channeling Material for Well Cementing

doi: 10.3969/j.issn.1001-5620.2017.04.014

  • 1. Boxing Division of CNPC Offshore Engineering Company Limited, Tianjin 300451;

  • 2. Qinghai Drilling Division of CNPC Xibu Drilling Engineering Company Limited, Haixi, Qinghai 816400

  • Received Date: 2017-05-05
  • Publish Date: 2017-07-31
    Abstract
  • Water channeling in well cementing has been a difficult technical problem remained unsolved in petroleum industry till now. In a study on anti-water channeling cement slurry, structural design of anti-water channeling additives were done, and based on the design, several anti-water channeling raw materials were selected and mixed in a certain ratio to form a new compounded anti-water channeling additive. According to the water-channeling mechanisms in different stages of well cementing, the effect of the anti-water channeling additive was evaluated with different evaluation methods. The evaluation results showed that the anti-water channeling additive developed is able to strengthen the interior structure of cement slurry, shorten the transit time of static gel, avoid contracting of set cement, thereby avoiding water-channeling of cement slurry at different cementing stages. The evaluation also demonstrated that the new anti-water channeling additive is able to shorten thickening time of cement slurry, increase compressive strength of set cement, and improve the stability of cement slurry; it has no bad effect on the thickening time, rheology and filter loss of cement slurry, exhibiting good overall properties.

     

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