摘要
潜山油气藏是断陷盆地内重要的油气藏类型。文中基于断陷盆地内潜山油气藏受盆地不同次级构造带控制而成带出现的特点 ,提出“潜山油气藏体系”概念 ,总结各次级构造带潜山圈闭和 (或 )油气藏体系的组合特点和分布规律 ,认为陡坡带、低凸起带、缓坡带是盆地内潜山油气藏体系最发育的构造单元 ,而凸起带和洼陷带次之 ;建议盆地内潜山油气藏勘探分两步走 :第一步是目前及今后一段时间 ,主攻目标为陡坡、低突起和斜坡带 ,获得突破后 ,第二步的目标是洼陷和凸起带。图 1参 5(董冬摘 )
Buried hill reservoirs are significantly developed in the faulted basins of eastern China due to their following evolution characteristics:(1)the Base-Strata of the basins had experienced a long-term erosion before their faulting; (2)uplifts occurred during the basin's early-forming-stage; (3) reversing of the stress field took place between the compressive and the extensive; (4) the subsidence of the base-floor continued during the basin's main formation stage of Tertiary. To generalize the distribution rules of buried-hill reservoirs in faulted basins, a concept of “buried-hill-reservoir-system”was firstly suggested; then, a“five-zone-model”of a realistic faulted basin was put forward, including (1)uplift zone, (2)abrupt slope zone, (3)central depression zone, (4)base-arch zone and (5)gentle slope zone. Based on above, the specific “buried-hill-reservoir-system”in each zone was generalized and discussed by taking the cases of Jiyang Depression as examples. Finally, the distribution rule of buried-hill reservoirs in faulted basin was drawn out from all jobs above, that is, the most interested zone for buried hill reservoir should be the abrupt slope zone, the base-arch zone and the gentle slope zone, and then, the central depression zone and the uplift zone should be not so rich in oil relatively. So, in order to find buried-hill reservoirs more effectively, to focus the most concentration on the former three zones should be the best exploration strategy for buried-hill reservoirs in the faulted basins in eastern China.
出处
《石油勘探与开发》
SCIE
EI
CAS
CSCD
北大核心
2000年第6期26-27,41,共3页
Petroleum Exploration and Development
关键词
断陷盆地
潜山油气藏体系
类型
形成条件
勘探
Faulted basin
Buried hill reservoir
Structure zone
Exploration
Strategy
Jiyang depression
作者简介
董冬,男 ,36岁高级工程师，从事石油地质综合研究.现为中国科学院地质与地球物理研究所博士研究生。
