Volume 37 Issue 6
Dec.  2020
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ZHANG Kun, WANG Leilei, SU Jun, MA Hong, LI Yonglong, XUE Yongbo, LIU Yanqing. Laboratory Study on Temperature Sensitive Gel Lost Circulation Material[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(6): 753-756. doi: 10.3969/j.issn.1001-5620.2020.06.013
Citation: ZHANG Kun, WANG Leilei, SU Jun, MA Hong, LI Yonglong, XUE Yongbo, LIU Yanqing. Laboratory Study on Temperature Sensitive Gel Lost Circulation Material[J]. DRILLING FLUID & COMPLETION FLUID, 2020, 37(6): 753-756. doi: 10.3969/j.issn.1001-5620.2020.06.013
shu

Laboratory Study on Temperature Sensitive Gel Lost Circulation Material

doi: 10.3969/j.issn.1001-5620.2020.06.013

  • 1. Tianjin Key Laboratory of Complex Conditions Drilling Fluid, Tianjin 300450;

  • 2. Drilling Fluid Technology Services of CNPC Bohai Drilling Engineering Company Limited, Tianjin 300450

  • Received Date: 2020-09-20
  • Publish Date: 2020-12-28
    Abstract
  • Gel lost circulation materials (LCM) currently in use have some deficiencies such as poor gelling controllability and weak structural strength at high temperatures. To deal with these problems, a temperature sensitive gel lost circulation material (LCM) BZWNJ was developed with Curdlan gum. Laboratory study showed that BZ-WNJ forms solid gel between 80 ℃ and 180 ℃, and has broad-spectrum temperature sensitivity. Compared with Curdlan gum, the gel strength of BZ-WNJ is increased by 137%. Meanwhile, using BZ-WNJ, the effects of large particle solids on high temperature gelling are minimized, making BZ-WNJ compatible with other particulate LCMs and fibrous LCMs in sealing off fractures through which the mud is lost, increasing the viscous resistance in mud loss channels and enhancing the pressure-bearing capacity of the formation.

     

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