Volume 45 Issue 5
Sep.  2017
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YUAN Haiping, TAO Changzhou, GAO Yan, XIA Yulei. A Method to Improve the Accuracy of Friction Calculations for HPG Fracturing Fluid[J]. Petroleum Drilling Techniques, 2017, 45(5): 108-112. DOI: 10.11911/syztjs.201705019
Citation: YUAN Haiping, TAO Changzhou, GAO Yan, XIA Yulei. A Method to Improve the Accuracy of Friction Calculations for HPG Fracturing Fluid[J]. Petroleum Drilling Techniques, 2017, 45(5): 108-112. DOI: 10.11911/syztjs.201705019
shu

A Method to Improve the Accuracy of Friction Calculations for HPG Fracturing Fluid

  • 1.

    Changqing Downhole Service Company, CNPC Chuanqing Drilling Engineering Company Limited, Xi’an, Shaanxi, 710021, China;

  • 2.

    National Engineering Laboratory of Low Permeability Oil and Gas Field Exploration and Development, Xianyang, Shaanxi, 712000, China

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  • Received Date: January 16, 2017
  • Revised Date: September 03, 2017
    Graphical Abstract
    • Abstract
  • At present,calculating the fracturing fluid friction is problematic because there are problems with the ratio of drag,e.g.difficult to find the coefficient,low accuracy of friction calculation,large difference between calculated friction and real one,etc.By combining testing and theoretical methods,the friction calculation method has been improved,i.e.through the indoor small pipe friction test of HPG fluid,fitting and establishing the relationship between the flow velocity and the ratio of drag. Later, the formula was given to calculate the friction of HPG fracturing fluid under different pipe diameters and flow velocities.The indoor and field tests showed that the improved method was accurate in calculating the HPG fracturing fluid friction.Compared with the traditional empirical formula method,the improved method can reduce the difficulty of calculating coefficient of the empirical formula,and improves the accuracy of HPG friction calculation.In this case,the average relative error of calculated friction and real friction is less than 16%,while that of the traditional empirical formula is up to 31%.The research results indicates that the improved method can improve the calculation precision of HPG fracturing friction,and provide a basis for fracturing design and operation.
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    • References (11)
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