Volume 35 Issue 5
Sep.  2018
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FAN Fan, YANG Bin, WU Manxiang. Extraction Disposal of Oil Cuttings in Shale Gas Drilling[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 78-82. doi: 10.3969/j.issn.1001-5620.2018.05.015
Citation: FAN Fan, YANG Bin, WU Manxiang. Extraction Disposal of Oil Cuttings in Shale Gas Drilling[J]. DRILLING FLUID & COMPLETION FLUID, 2018, 35(5): 78-82. doi: 10.3969/j.issn.1001-5620.2018.05.015
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Extraction Disposal of Oil Cuttings in Shale Gas Drilling

doi: 10.3969/j.issn.1001-5620.2018.05.015

  • National Engineering Laboratory of Low Permeability Oil and Gas Field Exploration and Development, Drilling & Production Engineering Technology Institute of CCDC, Xi'an, Shaanxi 710018

  • Received Date: 2018-05-14
  • Publish Date: 2018-09-30
    Abstract
  • Oil cuttings, as a kind of oil-bearing hazardous waste, pose grave effect on environment, ecology and safety. An extraction agent CQJ, has been developed to deal with oil cuttings produced in shale gas drilling. Compared with commonly used solvents, CQJ has advantages such as high flashing point, low volatility, good extraction performance and low toxicity. In a pilot test, oil cuttings of 56 m3 taken from a shale gas block in Sichuan were treated with CQJ. The test results showed that average oil content in the cuttings after treatment was 0.76%, and 91.5% of the oil in cuttings was recovered. CQJ can be used repeatedly, and the oil extracted can be used again in preparing oil base drilling fluid. Harmlessness, resourcing and avoidance of secondary pollution are realized with the use of CQJ.

     

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