Characteristics of breccia lava reservoirs and analysis of their dominant factors: case study of the Xushen gas field located in the Songliao Basin

作     者：WANG Zhiqiang LIU Chengzhi WANG Wenguang TIAN Zhao LI Minghui SUN Wei 

作者机构：College of Resources and Information China University of Petroleum Beijing 102249 China School of Earth Sciences Daqing Petroleum Institute Daqing 163318 China Hulunbei'er Branch Company Daqing Oilfield Co. Ltd. Hailaer 021008 China Daqing Yushulin Oilfield Development Co. Ltd. Daqing 163453 China Drilling Technology Service Company No. 1 Daqing Drilling & Exploration Engineering Corporation Daqing 163000 China 

出 版 物：《Mining Science and Technology》 (矿业科学技术（英文版）)

年 卷 期：2010年第20卷第1期

页      面：109-114页

核心收录：

学科分类：081504[工学-水利水电工程] 0808[工学-电气工程] 0709[理学-地质学] 0819[工学-矿业工程] 0809[工学-电子科学与技术（可授工学、理学学位）] 07[理学] 08[工学] 070901[理学-矿物学、岩石学、矿床学] 0807[工学-动力工程及工程热物理] 0708[理学-地球物理学] 0818[工学-地质资源与地质工程] 0815[工学-水利工程] 0805[工学-材料科学与工程（可授工学、理学学位）] 0813[工学-建筑学] 0814[工学-土木工程] 0702[理学-物理学] 

主　　题：breccia lava diagenesis volcanic rock reservoir 

摘      要：Breccia lava is a type of rock in transition between volcanic clastic rock and lava. Its physical properties are compara-tively special, while the nature of its genesis and the formation of reservoirs, deposits and concentrations vary considerably. In order to discover the different genesis for breccia lava reservoirs, our study has been carried out on breccia lava for its rock constituents, structures, diagenesis and reconstruction from tectonic movements to mineral depositions. From our analysis, we conclude that the main type of reservoir is a secondary emposieu, where rock compositions, structures, diagenesis and tectonic action are the major contributing factors to the deposition of breccia lava and its properties. Diagenesis constrained the extent of conservation of the primary pore of breccia lava and produced secondary porosity. The roles of tectonics were played out through the formation controlling tectonic fissures inside breccia lava and affected the impermeability of breccia lava fluids. The constituents of lava rock determine directly the type of diagenesis and its response to tectonic action. At the time of appropriate rock composition and structures, constructive formation occurred to breccia lava. Breccia lava also responded proactively to tectonic movements, forming the best quality collective reservoir agglomerations of vast spaces and strong permeability.