Research and Application of Strong Plugging Oil-based Drilling Fluid System
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School of Engineering and Technology, China University of Geoscience (Beijing),School of Engineering and Technology, China University of Geoscience (Beijing),School of Engineering and Technology, China University of Geoscience (Beijing)

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P634;TE254

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    Abstract:

    Due to the instability of shale gas horizontal well, oil-based drilling fluid leakage will cause a great economic loss; so the property requirement of oil-based drilling fluid system is higher and higher. In view of the above issues, a new type of strong plugging oil-based drilling fluid system has been developed by orthogonal test; the laboratory tests show that this system has excellent stain resistance, emulsifying stability, low fluid loss, good rheology, moderate viscosity and shear force. By the application of strong plugging oil-based drilling fluid system, well Jiaoye195-1HF shows that the leakage risk and loss cost are greatly reduced compared to well Jiaoye200-1HF which used common drilling fluid and several other wells; in this circumstance, 11 days are saved; this strong plugging drilling fluid system has good application prospect.

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History
  • Received:June 28,2017
  • Revised:August 28,2017
  • Adopted:August 30,2017
  • Online: December 20,2017
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