Technical research on test well of coalbed methane based on Diagnostic Fracture Injection Test Method
JING Xingpeng
SONG Yonghui
Abstract：In order to solve some problems of traditional test such as long test time in the traditional test well and multi-solutions of data analysis,Diagnostic Fracture Injection Test had been introduced.This article expounded the principle,method and data analysis of Diagnostic Fracture Injection Test Method.The Diagnostic Fracture Injection Test Method was applied to the tests for Well Can-1 in the Northeast of Qinshui Basin,and production well historical matching method,injection and pressure drop test results was applied to the comparison tests and analysis on the coal reservoir parameter for six wells in other blocks.The results showed that the permeability value of Diagnostic Fracture Injection Test Method was close to the value of the production historical matching and higher than the value of injection and pressure drop test,and the data of three methods were in the same order of magnitude,reservoir pressure was not different for the same coal in well,the same coal in the same wells bed,the same coal seam in block of two approach wells,the same coal seam and the same block two wells.Basically,parameters from Diagnostic Fracture Injection Test Method reflected the features of coalbed methane reservoir.
Keywords：Diagnostic Fracture Injection Test methodsimulate linearity flowreservoir pressurepermeabilityfracturing
Publication Date：2017-01-01