Lithofacies classification and reservoir delineation for volcanic rock in XB area
Lang Xiao-ling1, Han Long2, Wang Shi-rui2, Chen Shu-ming3, Jiang Chuan-jin3
1. Institute of the Earth Recourses and Information, China University of Petroleum, Beijing City, 102249, China;
2. Tenglongruibang Energy Scientific Development Ltd.,Zhuozhou City,Hebei Province,072750,China;
3. Exploration & Development Institute,Daqing Oilfield,Daqing City,Helongjiang Province,163114,China
Abstract：Based on the well logging and seismic response characteristics and by integrating with drilling and geological data, several integrated seismic prediction methods, such as seismic attribute analysis method, structure trend surface analysis method, seismic constraint inversion method and 3D visualization method were used to classify lithofacies of the volcanic rock in XB area of Songliao Basin. The lithofacies was classified to 3 sub-lithofacies, they are explosion facies, overflow facies and volcanic-sedimentary facies, and the explosion facies, overflow facies and fracture developed zone were enclosed as favorite volcanic rock gas reservoir. By integrating with density inversion method and based on the reservoir thickness extracted by multi-lithologies and multi-thresholds principle, the palaeogeomorphology, effective reservoir thickness and distribution range of the volcanic crater in the study area were carefully delineated and then were proven by drilling.
郎晓玲, 韩龙, 王世瑞, 陈树民, 姜传金. XB地区火山岩岩相划分及储层精细刻画[J]. 石油地球物理勘探, 2010, 45(2): 272-277.
Lang Xiao-ling, Han Long, Wang Shi-rui, Chen Shu-ming, Jiang Chuan-jin. Lithofacies classification and reservoir delineation for volcanic rock in XB area. OGP, 2010, 45(2): 272-277.
