Volume 38 Issue 4
Jul.  2021
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Article Navigation >  DRILLING FLUID & COMPLETION FLUID  > 2021  >  38(4): 492-498
ZHANG Xiayu, AI Zhengqing, WEN Zhiming, et al.Research for low shear rheological properties of low return velocity cementing drilling fluid in kuqa piedmont[J]. Drilling Fluid & Completion Fluid，2021, 38（4）：492-498 doi: 10.3969/j.issn.1001-5620.2021.04.015
Citation: ZHANG Xiayu, AI Zhengqing, WEN Zhiming, et al.Research for low shear rheological properties of low return velocity cementing drilling fluid in kuqa piedmont[J]. Drilling Fluid & Completion Fluid，2021, 38（4）：492-498 doi: 10.3969/j.issn.1001-5620.2021.04.015
shu

Research for low shear rheological properties of low return velocity cementing drilling fluid in Kuqa Piedmont

doi: 10.3969/j.issn.1001-5620.2021.04.015
  • 1.

    School of Petroleum Engineering, Southwest Petroleum University, Chengdu, Sichuan 610500

  • 2.

    CNPC Tarim Oilfield Company, Kuerle，Xinjiang 841000

  • Received Date: 2021-04-07
  • Publish Date: 2021-07-31
    Abstract
  • In view of the fact that the drilling fluid is in the low shear flow state during the fourth spud in ultra-high pressure gas well in Kuqa mountain front of Tarim Basin, the rheological model and rheological parameters of the drilling fluid were fitted by the rheological test data of the full shear rate. The low shear rate range, corresponding rheological mode and rheological parameters of the drilling fluid and its effect on the cementing annulus were studied The influence of flow friction coefficient. The results show that the shear rate of drilling fluid is obviously less than 1022 s−1 (600 r/min) in the process of cementing with low return velocity, and the corresponding rheological mode and rheological parameters are greatly different from the range of full shear rate, which leads to a certain or even large difference in the friction coefficient of cement injection annulus, which affects the accurate control of the calculation of cementing annulus pressure, For low return velocity cementing, the annular flow pressure loss should be calculated according to the rheological mode and rheological parameters within the low shear rate range, the cementing displacement should be controlled, and the success rate of low return velocity and leak proof cementing should be improved.

     

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