Volume 36 Issue 2
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LUO Faqiang, HAN Zixuan, CHAI Long, CHEN Xiaofei. Study and Application of High Temperature Gas Blocking Plug[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(2): 165-169. doi: 10.3969/j.issn.1001-5620.2019.02.006
Citation: LUO Faqiang, HAN Zixuan, CHAI Long, CHEN Xiaofei. Study and Application of High Temperature Gas Blocking Plug[J]. DRILLING FLUID & COMPLETION FLUID, 2019, 36(2): 165-169. doi: 10.3969/j.issn.1001-5620.2019.02.006
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Study and Application of High Temperature Gas Blocking Plug

doi: 10.3969/j.issn.1001-5620.2019.02.006

  • 1. Sinopec Northwest Oilfield Company, Xinjiang, Urumqi 830011;

  • 2. State Key Laboratory of Shale Oil and Gas Enrichment Mechanism and Effective Development, Beijing, 100101;

  • 3. SINOPEC Research Institute of Petroleum Engineering, Beijing, 100101

  • Received Date: 2018-01-17
  • Publish Date: 2019-04-30
    Abstract
  • A high temperature gas blocking plug has been developed to resolve the problems of too fast gas channeling and long period of gas drainage encountered in high temperature high pressure fractured reservoirs in the periphery of Tazhong area. The gas blocking plug, developed with choice high temperature gelling agents and high temperature filter loss reducer etc., functions normally at 180℃, with its gel strength greater than 30 Pa, viscosity greater than 60 mPa·s, and time of stabilization of longer than 120 h at elevated temperatures. Field application of the gas blocking plug indicated that the rate of gas channeling was reduced by more than 80%, greatly prolonged the time required foroperation and enhanced the safety and efficiency of well drilling and completion. The high temperature gas blocking plug can be used to resolve the gas cut problem encountered in drilling high pressure fractured petroleum reservoirs in Tazhong area, providing a safe and effective well control technology for gas channeling prevention during well drilling and completion.

     

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