四川盆地下二叠统、上三叠统水动力场与天然气保存  

THE LOWER PERMIAN AND UPPER TRIASSIC HYDRODYNAMIC FIELD AND GAS PRESERVATION IN SICHUAN BASIN

作　　者：王红[1] 秦成明[2] 王丽英[2] 

机构地区：[1]石油大学 [2]四川石油管理局

出　　处：《石油勘探与开发》1997年第5期29-32,共4页Petroleum Exploration and Development

基　　金：国家重点科技攻关项目;!85-102-06

摘　　要：下二叠统和上三叠统储集层是四川盆地油气主力产层。在对其水动力场控制因素分析研究的基础上，对实测地层压力资料进行数据处理，分别建立了P_1；和T_3地层压力预测模型。地层埋深、北隙度、构造抬升率和褶皱强度等为现今水动力场的主要控制因素，其中地层埋深对地层压力的影响最大。下二叠统和上三叠统现个水动力场是经喜山村造运动强烈改造、局部被断层分割的统一水动力场，渗入水承压系统对天然气保存起破坏作用，商业性气藏只分布在沉积水承压系统内，相对低的中压一常压区是油气保存条件优越的区域。The Lower Permian and Upper Triassic formations are the main gas bearing zones in Sichuan basin. Based on the study of thecontrol factors to the Lower Permian and Upper Triassic hydrodynamic field, and processing the formation pressures, thispaper builds up a model for predicting formation pressure and confirms that the buried depth, porosity, rise ratio, foldintensity of structure etc. are the main control factors pf the present hydrodynamic field, of which the strongest factorscontrolling formation pressure is the buried depth. The present hydrodynamic field is unitedly formed after intensivetransform and incision by the Himalayan orogeny' The Permeated water system has destroy action to preserve gas, thereservoir only distributed in the sedimentary water system and the middle-normal pressure region is the favourabIe place togas preservation.

关 键 词：盆地 早二叠纪 晚三叠纪 水动力场 天然气 

分 类 号：P618.130.2[天文地球—矿床学]