Volume 32 Issue 3
Jul.  2015
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2015  >  32(3): 65-69
WANG Jianbo, MO Jun, XIONG Yue, MA Chao, WANG Zhongwu, GU Jun. Effect of Composition of Drilling Fluid on Filter Cake Shear Strength[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(3): 65-69. doi: 10.3969/j.issn.1001-5620.2015.03.018
Citation: WANG Jianbo, MO Jun, XIONG Yue, MA Chao, WANG Zhongwu, GU Jun. Effect of Composition of Drilling Fluid on Filter Cake Shear Strength[J]. DRILLING FLUID & COMPLETION FLUID, 2015, 32(3): 65-69. doi: 10.3969/j.issn.1001-5620.2015.03.018
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Effect of Composition of Drilling Fluid on Filter Cake Shear Strength

doi: 10.3969/j.issn.1001-5620.2015.03.018

  • PetroChina Southwest Oil & Gas field Company, Langzhong, Sichuan 637400, China

  • Received Date: 2015-01-14
  • Publish Date: 2015-05-31
    Abstract
  • Drilling fluid composition directly affects the composition and property of filter cakes, which in turn affect the mechanical performance of the filter cakes at interlayer interface. Shear strengths of several clay samples, such as pure bentonite, bentonitehematite manipulated clay, and bentonite-quartz powder manipulated clay were measured to study the effect of three solids (clay, weighting agent and drill cutting) on the shear strength of filter cakes at the interlayer interface. The study showed that, at certain water content and compaction condition, the angle of internal friction and cohesive strength of filter cake linearly decreased with an increase of hematite content in filter cake. When mass ratio of quartz powder in filter cake was less than 10%, same result as hematite was obtained. When mass ratio of quartz powder in filter cake exceeded 10%, the angle of internal friction and cohesive strength of filter cake remained almost constant. Cohesive strength of filter cake increased with an increase of bentonite content in filter cake at a certain range.

     

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