摘要
镇泾地区三叠系延长组油气成藏特征的分析有利于进一步认识该区单井产能普遍较低的真正原因。通过对构造及其演化特征、烃源岩、储层、盖层、圈闭条件和类型等的分析研究,认为镇泾地区内及附近烃源岩厚度大、丰度高、主力砂体发育且分布连续、保存条件好,这些均不是制约成藏的关键因素,而成藏的关键因素在于研究区内有效圈闭的存在与否。通过研究归纳出了该区砂体、构造、地层分布组合类型,为寻找有效圈闭指明了方向,认为该区油层主要分布在靠上倾方向由于岩性、物性变化形成的局部封堵带内。在对圈闭条件认识的基础上认为研究区在西北大部分地区不利于形成大的岩性圈闭,而在东南部因继承性构造鼻隆的存在,形成构造岩性圈闭体可能性大,是勘探的有利地带。
The reason on lower flow potential of single well would be understood further through analyzing Triassic hydrocarbon accumulation characters in Zhenjing Area.According to the research on structural characters,parent rock,reservoir,cap-rock and trap,it is considered that the thickness of parent rock,oil and gas abundance and the main sand body in this area or neighbor area are good,which are not key restraint element of hydrocarbon accumulation.The key element of hydrocarbon accumulation is whether or not being effective trap.It provides the direction of looking for effective trap,through summing up combination types of sand body,structure and stratigraphic distribution.Oil layers distribute in local sealing zones built by changing of lithology and physical property near undip direction.There are not big lithologic traps in northwest based on trap condition,whereas the structure-lithologic trap would be found in the southeast.The southeast area of the region of interest is a beneficial exploratory region.
出处
《石油天然气学报》
CAS
CSCD
北大核心
2008年第5期11-17,376,共7页
Journal of Oil and Gas Technology
基金
国家重点实验室研究项目(Kt2005-12)
关键词
镇泾地区
延长组
成藏研究
岩性圈闭
Zhenjing Area
Yanchang Formation
hydrocarbon accumulation research
lithologic trap
作者简介
邓虎成（1980-）。男，2002年大学毕业，讲师，博士生，现主要从事石油地质、开发地质的研究工作。
