Abstract：Continental sandstones of the 2nd, 4th, 6th members of Xujiahe Formation have always been main targets in northwest of Sichuan Basin. Recently in the 3rd member of Xujiahe Formation as an important hydrocarbon source layer, the high-yield industrial gas has been discovered. The 3rd member contains many sets of thin and tight ash conglomerate. Fracture development has greatly improved reservoir space. So it is considered as a great exploration potential. The 3rd member of Xujiahe Formation is a lithologic gas pool controlled by reservoirs, fractures and structure background. So it is very important to research the sandstone distribution and micro fracture distribution. In the practice, we propose some techniques suitable for identiiication, analysis and evaluation of gravel rocks in the 3rd member of Xujiahe Formation. Application results contain new well location propositions and favorable zones for further exploration.
纪学武, 马文花, 臧殿光, 聂刚, 司国帅, 彭忻, 徐宝亮. 川西北地区须三段致密砂岩目标评价技术的应用效果[J]. 石油地球物理勘探, 2012, 47(增刊1): 55-58.
Ji Xuewu, Ma Wenhua, Zang Dianguang, Nie Gang, Si Guoshuai, Peng Xin, Xu Bao-liang. Tight sandstone reservoir evaluation in the 3rd member of Xujiahe Formation, the northwest of Sichuan Basin. OGP, 2012, 47(增刊1): 55-58.
