摘要
为分析坳陷期张应力与构造反转期压扭性应力对丰乐地区葡萄花油层断裂发育与分布的双重影响,从断层断穿层位以及断层形成的应力环境出发,将断穿葡萄花油层不同时期的断层划分为油源断层和晚期调整型断层,结合这两类断裂系统的分形特征,分别刻画了油源断层和晚期调整型断层分维值。研究结果表明:丰乐地区油气有利区主要分布于油源断层分维值的高值区、晚期调整型断层分维值的低值区,即丰乐地区的西北部以及中部地区;而丰乐地区东部三肇凹陷—朝阳沟阶地地区,后期调整性断层的分维值较高,后期断裂活动较强,使得保存条件较差,不利于油气聚集成藏。这一认识不仅有力地指导了丰乐地区油气勘探,而且为周边含油气区寻找剩余油提供了借鉴。
In order to analyze the double influences of the tensile stress at the depression stage and compressoshear stress in tectonic reversal period on the fracture development and distribution in Putaohua oil reservoirs of Fengle area,from the viewpoint of the faulted horizons and the stress forming environments of the faults,the activating faults at different stages in the reservoirs were divided into the oil source fault and late-adjusted fault,integrated with the fractal characteristics of these two kinds of the fault,the dimension classifying values of them were respectively described. The study achievements show that the favorable blocks in Fengle area are mainly distributed in the high-value region of the fractal dimension in the oil source fault and the corresponding low-value area of the latter i. e. Northwest and Middle Fengle; while from Sanzhao Sag in East Fengle to Chaoyanggou Terrace,the values of the latter are rather higher,the activities of the late fractures are rather stronger,these make the conservationconditions rather worse and is not conducive to the accumulation of the oil and gas. This understanding can strongly guide the petroleum exploration in Fengle area,and moreover can provide the reference for the remained oil search in the surrounding hydrocarbon-bearing area.
出处
《大庆石油地质与开发》
CAS
CSCD
北大核心
2017年第5期8-13,共6页
Petroleum Geology & Oilfield Development in Daqing
基金
国家重大科技专项"低渗
特低渗复杂油藏规模有效动用关键技术"(2017ZX05013-006)
关键词
丰乐地区
葡萄花油层
油源断层
晚期调整型断层
分形分维
Fengle area
Putaohua oil reservoir
oil source fault
late-adjusted fault
fractal dimension
作者简介
郭艳平，女，1983年生，工程师，从事油气藏评价与开发项目管理。E-mail：yjyguoping@petrochina．com．cn
