Efficiency Research of the Equipment of Water Pumping and Gas Production for CBM Well

Abstract:

According to the characteristics of the low efficiency of drainage equipment for coal bed methane wells, we analyzed and calculated the coefficient of fullness, plunger stroke loss, leakage and volume factor, which affect pump efficiency. After analyzing the displacement loss caused by various factors, we obtained coefficient of fullness of the most influential factor on the pump efficiency. By analyzing the change relationship among the coefficient of fullness and clearance space, gas fluid ratio, compression ratio and pumping speed, we found shrinking clearance space and reducing gas fluid ratio, compression ratio and pumping speed can increase coefficient of fullness, and we presented several improvement measures to improve pump efficiency. These measures will enable coal bed methane wells production more stable and efficient.

• Periodical: Advanced Materials Research (Volumes 479-481)
• Pages: 720-724
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.479-481.720
• Online since: February 2012
• Authors: Tao Ren, Yi Xiao Guo, Wen Tao Qu, Yan Ping Sun
• Keywords: Coalbed Methane (CBM), Coefficient of Fullness, Improvement Measures, Pump Efficiency

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