Method for controlling loss of drilling fluid

Method for controlling loss of drilling fluid

  • CN 101,688,109 B
  • Filed: 06/17/2008
  • Issued: 03/25/2015
  • Est. Priority Date: 07/26/2007
  • Status: Active Grant
First Claim
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1. the method for drilling well eye in subterranean strata, it comprises:

  • A () prepares drilling fluid, the API spurt loss volume that described drilling fluid has at more than 10ml and be included in carry in liquid by volume at least 10% particulate treatment material, wherein said spurt loss volume concentrates described particulate treatment material to form motionless material in the crack at the moment formed in drilling well, and wherein said particulate treatment material comprises the permeable medium particle of any size;

    WithB () is circulated in described well when drilling well in the earth formation described drilling fluid.

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