寺河矿东五盘2011ZX＿CC＿01井井喷原因.

When the 2011 ZXCC01 well was in normal drilling to Ordovician limestone, an eruption occurred, and also an eruption occurred in its adjacent 12 m 2011 ZXCC01(W1) well when it was drilled to K2 limestone. In order to analyze the causes of blowout, the research was carried out from three aspects including the water flow channel, the wellspring water supply, and the power source of the blowout. Based on seismic data, 3D seismic fine interpretation technique was used to analyze the possible water diversion channels. The apparent resistivity neural network inversion technique was used to study the water-rich water in the blowout zone and analyzed the main source of water spraying. The geological analysis method and the inversion technique were used to study the crustal stress and the coal seam gas pressure in the blowout area and analyzed the main power source of the blowout. The limestone of K2 limestone and ordovician Fengfeng formation in the blowout zone are water-rich. The blowout zone is located on the bisection line of the anticlinal axis of Xiaoxiwa depression and the "mountain figure"structure. The ground stress and gas pressure are alsolarge with the power source needed for blowout. In addition, there is a collapse column in the blowout zone. The 2011 ZXCC01 and 2011 ZXCC01(W1) well are within the collapse column. Due to the influence of collapse columns, K2 limestone has a close hydraulic relationship with the limestone of ordovician Fengfeng formation. This eventually led to a blowout in well 2011 ZXCC01 and 2011 ZXCC01(W1) well. [ABSTRACT FROM AUTHOR]