摘要
断层的准确定位是圈闭精细描述的重点工作之一。在油气勘探开发实践中,弱地震反射目的层的断点位置往往难以确定,给钻探靶点的选择造成困难。本文针对断层定位问题,根据苏北盆地高邮凹陷阜三段沉积特征、地震反射特征和断层发育特点,结合生产实践,利用区域断裂体系的剖面、平面展布特征指导断层解释方案,总结了根据低级序断层解释的三个一致性法则进行断点间接定位的方法。通过该方法的应用,使阜三段构造方案得到进一步落实,提高了圈闭描述的精度。
The fault＇s accurate positioning is one of the key work to finely describe traps. In oil-gas exploration and development,weak seismic reflection target＇s breakpoint is often difficult to determine and lead difficulties to select drilling target. This paper focuses on the fault targeting issues, based on the deposition characteristics, seismic reflection and fault development characteristics of the 3rd Member of Funing Formation （Elf3） in Gaoyou Sag, combined with production practice, make use of researching regional fracture system section and plane distribution to guid faults＂ interpretation. The breakpoint targeting indirect positioning methods based on the Three-coincidence Principle of low-grade faults interpretation are lastly summarized. It is performed to be further implemented the Elf3 structure scheme and improved the trap description precision.
出处
《中国矿业》
北大核心
2013年第4期123-126,共4页
China Mining Magazine
关键词
弱地震反射
低级序断层
断点定位
圈闭描述
weak seismic reflection
low-grade fault
breakpoint positioning
trap description
