西山地区煤层气径向水力钻孔技术应用及效果

doi:10.11799/ce202006019

Abstract

Abstract: Coalbed methane (CBM) radial hydraulic drilling technology is developed in recent years in China to increase the production of coalbed methane. In order to study the application effect of radial hydraulic drilling technology in coalbed methane wells, the principle and construction technology of this technology were analyzed, with the field tests of the radial hydraulic drilling being carried out for two coalbed methane wells in Gujiao mining area of Xishan area. The results showed that radial hydraulic drilling technology could increase the conductivity of coal seam, and the production of the tested wells were significantly improved, but the results are not enough satisfying. On this basis, the reasons why the production increasing was not obvious were analyzed from the aspects of geology and engineering, respectively. Though radial drilling technology has a certain application prospect in CBM drainage stimulation and hydraulic fracturing process optimization, it is necessary to increase the study of basic theories and optimize the construction process.

CLC Number:

TD325

References 18

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Application and Effect Analysis of Radial Hydraulic Drilling Technology for Coalbed Methane in Xishan Area

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