摘要
隆盛潜伏构造是否具备圈闭油气的能力,其主要断层的封闭性是一项重要的评价参数。控制隆盛构造主体和隆盛潜伏构造的断层主要是①、②、③号断层,其垂直断距为0～1790 m,平面延伸长度为10～20km,断层面上陡下缓。通过绘制断层封堵分析图,计算出主要断层的断面压力多大于7.5 MPa,涂抹系数多小于7,断层泥率多大于14%。结合各个指标的评价标准,综合评价得出隆盛潜伏构造主要断层现今封闭性为较好级别,对油气具有一定的封堵作用。
May Longsheng buried structure trap oil and gas? The sealing of main fault is just an important parameter.There are mainly three faults affecting the main body of structure,such as①,②and③faults.The vertical fault distance ranges from 0 to 1790 m;the extensive distance in plane ranges from 10 to 20 km; and the fault plane is featured by upper steep and lower flat.After a calculation,some indexes are obtained:the fault-plane pressure of main fault mostly more than 7.5 MPa,the shale smear factor (SSF) almost smaller than 7,and the shale gouge ratio(SGR) almost greater than 14%.A comprehensive evaluation of these indexes shows that for Longsheng buried structure,the sealing of main fault is better and can form a certain capacity to trap oil and gas.
出处
《天然气技术》
2010年第6期17-20,共4页
NATURAL GAS TECHNOLOGY
