修武盆地构造热演化史对下寒武统页岩含气性的影响  

The Effect of the Tectonic Thermal Evolution History to Gas Content of Lower Cambrian Shales at Xiuwu Basin

作　　者：李宜润 姜振学[1,2,3] 刘伟伟 黄睿哲 张昆[1,2,3] 程四洪 高之业 高凤琳 熊凤阳 LI Yi-run JIANG Zhen-xue LIU Wei-wei HUANG Rui-zhe ZHANG Kun CHENG Si-hong GAO Zhi-ye GAO Feng-lin XIONG Feng-yang(State Key Laboratory of Petroleum Resources and Prospecting Institute of Science and Technology Unconventional Natural Gas Rearch Institute3, China University of Petroleum, Beijing 102249, P.R. China Jiangxi Province Natural Gas Company,Ltd, Nanehang 330000, P.R. China)

机构地区：[1]中国石油大学(北京)油气资源与探测国家重点实验室,北京102249 [2]中国石油大学(北京)科学技术研究院,北京102249 [3]中国石油大学(北京)非常规天然气研究院,北京102249 [4]江西省天然气(赣投气通)控股有限公司,南昌330000

出　　处：《科学技术与工程》2016年第34期44-51,共8页Science Technology and Engineering

基　　金：国土资源部项目(ZX20150274);江西修武盆地页岩含气性影响因素及定量预测(HX20150443)资助

摘　　要：构造热演化史可以确定泥页岩在不同地质时期的成熟度状态及构造演化特征,对页岩含气性研究和资源评价都具有重要意义。综合运用包裹体测温法、构造热演化法以及盆地模拟软件Petromod对修武盆地的热演化史和埋藏史进行研究和重建。修武盆地JY1井的剥蚀厚度计算结果为4 142.75 m;自晚古生代以来热流值经历了低—高—低的变化过程;王音铺-观音堂组页岩在早志留世（434 Ma）进入生烃门限,早志留世-中志留世（434-422 Ma）为生油阶段,晚志留世-早二叠世（422-265 Ma）为生湿气阶段,早二叠世-晚侏罗世（265-145 Ma）为生干气阶段;王音铺组-观音堂组页岩早期大量生烃、长期深埋、生气时间早和抬升时间早,使得JY1井王音铺组-观音堂组页岩含气量（0.28-0.93 m3/t）并不理想。Tectonic thermal evolution history can determine the state of shale maturity and the characteristics of tectonic evolution at the different geological periods. It is important for the research of shale gas and the evaluation of resource. The integrated use of homogenization temperature of fluid inclusions method, tectonic thermal evolution method and the basin simulation software （petromod） for the research and reconstruction of burial history and ther- mal history in Xiuwu basin. The result of the denuded thickness for the well JY1 in Xiuwu basin is 4 142.75 m.Since the Late Paleozoic, the paleo heat flow and paleogeothermal gradient in the study area first increased and then decreased. The Wangyinpu and Guanyintang formations entered the threshold of hydrocarbon generation in the Early Silurian （434 Ma）,entered the threshold of oil generation in the Early-Middle Silurian （434 -422 Ma）, entered the moisture stage from the late Silurian to the Early Permian （422 -265 Ma）, entered the over mature dry gas generation stage from the early Permian to the late Jurassic （265 - 145 Ma）. The Wangyinpu and Guanyintang for- mations is characterized by generating hydrocarbons and gases earlier, lifting earlier and burying long time. Al- though the well of JY1 has moderate uplift amplitude, the shale gas content （0. 28 -0. 93 m^3/t） is not ideal of the Wangyinpu and Guanyintang formations in the well of JY1.

关 键 词：修武盆地 构造热演化史 含气性 生烃史 王音铺-观音堂组 

分 类 号：TE121.1[石油与天然气工程—油气勘探]