摘要
对以断层为油气圈闭边界的地区，需要进行断层的封堵性分析。它是勘探阶段油气的保存、可能性的运移路线、合油气区的扩储评估的一个重要分析手段。在开发阶段它对储层的优化管理、二次开发利用可起到指导作用。断层封堵分析主要包括三个方面：一是区域上的地质物探资料分析，尽可能寻找掌握对断层封堵分析有关的信息，诸如岩性、压力、地化、构造发展史、沉积环境等方面的资料，从而基本确定本地区封堵和不封堵断层样本，了解所研究断层的基本情况；二是沿断层面制作断层面剖面，分析断层两侧储层岩性并置情况，判断因储层岩性并置可能出现的油气横向泄漏问题；三是对断层带进行断层泥率的计算，用一些约束条件确定其门槛值，从而分析沿断层出现的可能的油气泄漏段。
It is needed to make fault sealing analysis in the region where the fault is theboundary of hydrocarbon trap. And it is an important technique for evaluating thehydrocarbon preservation, possible migration path and new reserve estimation atexploration stage in oil--bearing region. It will play guiding effect on optimizationmanagement and secondary development of reservoir at development stage. Thefault sealing analysis technique consists of 3 fields: l) regional analysis of geophysical and geological data, which will find as much as possible the informations related with the fault sealing analysis (such as lithology, pressure, geochemistry, structural evolution history, and sedimentary environment) and thus help people to determine the sealing and unsealing fault samples of the region and to understand thebasic situation of the analysed fault i 2) fault surface section will be made to analyseboth the concatenation of reservoir lithology on both sides of the fault and the possible lateral hydrocarbon leakage due to the lithology concatenations 3) fault mudrate will be calculated along the fault zone, by determining the threshold value withthe use of some constraint conditions, thus to analyse the possible hydrocarbonleakage section along the fault.
出处
《石油地球物理勘探》
EI
CSCD
北大核心
1998年第5期649-657,共9页
Oil Geophysical Prospecting
关键词
断层
封堵
油气勘探
地质勘探
fault, lateral sealing, vertical sealing, lateral leakage, vertical leakage, fault mud rate , fault-plane section, reservoir lithology concatenation
