Volume 33 Issue 5
Sep.  2016
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WANG Can, HOU Shili, QI Ben, HUANG Daquan, LI Guanghuan, LIU Guangyan, XIAO Jie. Study and Application of Self-Cementation Lost Circulation Control Method[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(5): 63-66. doi: 10.3969/j.issn.1001-5620.2016.05.013
Citation: WANG Can, HOU Shili, QI Ben, HUANG Daquan, LI Guanghuan, LIU Guangyan, XIAO Jie. Study and Application of Self-Cementation Lost Circulation Control Method[J]. DRILLING FLUID & COMPLETION FLUID, 2016, 33(5): 63-66. doi: 10.3969/j.issn.1001-5620.2016.05.013

Study and Application of Self-Cementation Lost Circulation Control Method

doi: 10.3969/j.issn.1001-5620.2016.05.013
  • Received Date: 2016-05-10
  • Publish Date: 2016-09-30
  • A series of studies have been conducted on lost circulation control to deal with severe mud losses into fractures and vugs. A self-cementation lost circulation control method is the product of the studies. This method uses cementation agents and bentonite as the raw materials in the "bi-slurry grouting method", to stay the lost circulation material (LCM) slurries in place in the mud loss channels. Chemical reactions take place in the LCM slurries and set LCMs are formed, plugging the channels. The LCM slurries have low density and high viscosity. The set LCM, after aging for 24 h at 80℃, has compressive strength that is less than 11 MPa, and is easy to drill out. The time required for the LCM slurries to set is controlled by the concentration of an additive. This technology has been applied in field operation, and severe mud losses into fractures and vugs of different sizes were successfully stopped, ensuring high quality and efficient drilling operation.

     

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