High production gas layer identification in tight sandstone of Shilijiahan zone of Hanjinqi area

Reservoir physical property and gas saturation are main controlling factors of high production in gas layers.The multi-parameter intersection analysis of lithology,electrical parameters and testing results in tested gas intervals of Shilijiahan zone of Hanjinqi area was carried out,and the electrical characteristics were mainly analyzed.Through comprehensive analysis of lithology and electrical parameters,the criteria standard in high production gas layers were established.The analysis results indicated the gas layers in Shan 1 member and Taiyuan formation reflected high resistivity-low interval transit time-relatively lower neutron characteristic,while the gas layers in Shan 2 member,He 1 and He 3 member reflected low resistivity-high interval transit time-relatively higher neutron characteristic.