Abstract:

CBM parameters wells logging is an important means for reservoir evaluation, dynamic monitoring of production and evaluation completion efficiency. And reservoir parameters are used for reservoir evaluation, stress is the most important factor that affect the coal and gas outburst. In this artical, hydraulic fracturing is used in CBM parameters wells Pingdingshan Mine No.13, to measure the wells in-situ stress and analysis the stress distribution under mining influence. The results show that ground stress presents a linear increasing trend with increasing distance to the mining face.The results of Well SS-003 are more reliable, more agreement to the ground stress of east of Pingdingshan mine area, this parameter can be used to guide field work underground.

Key words: coal bed gas, crustal stress, distribution