铁边城地区侏罗系油藏成藏模式及主控因素  

Reservoir forming model and main controlling factors of Jurassic reservoir in Tiebiancheng area

作　　者：张晓明[1] 黄蒙 李宽[1] 陈德照[1] 陈磊[1] 麻宇杰[1] 刘智伟[1] 赵军辉 狄晓磊 ZHANG Xiaoming;HUANG Meng;LI Kuan;CHEN Dezhao;CHEN Lei;MA Yujie;LIU Zhiwei;ZHAO Junhui;DI Xiaolei(Oil Production Plant 8 of PetroChina Changqing Oilfield Company,Xi'an Shaanxi 710021,China)

机构地区：[1]中国石油长庆油田分公司第八采油厂,陕西西安710021

出　　处：《石油化工应用》2022年第7期81-85,共5页Petrochemical Industry Application

摘　　要：鄂尔多斯盆地铁边城地区侏罗系油藏是在河流-湖泊三角洲沉积基础上形成的多油藏组合。以往研究认为,该区侏罗系油藏成藏主要受早侏罗系古地貌形态控制,油藏一般分布在古河谷附近低山潜丘带及其坡缘和河间砂咀地区等古地貌正向单元。笔者通过深入分析鄂尔多斯盆地铁边城地区已开发10个侏罗系油藏成藏条件,总结出了该区两类四种成藏模式。其中延10层以与古地貌相关的坡咀油藏、丘咀油藏为主,延4+5~延9层以与微幅构造相关的岩性-构造油藏、岩性上倾遮挡油藏为主。铁边城地区侏罗系不同层位油藏的成藏模式,主要受其独特的古沉积环境下的储集条件、圈闭条件以及良好的保存条件控制。研究铁边城地区侏罗系油藏的成藏模式及主控因素对于该区侏罗系油藏的勘探具有一定的指导意义,同时,对于盆地其他区域该类油藏的勘探也会起到有益的借鉴作用。The Jurassic oil reservoir in the Tiebiancheng area of Ordos Basin is a multi reservoir combination formed on the basis of river lake delta sedimentation.Previous studies have shown that the formation of Jurassic reservoirs in this area is mainly controlled by the paleogeomorphic form of early Jurassic.The reservoirs are generally distributed in the low mountain buried hill belt near the ancient river valley,its slope edge and the sand mouth area between rivers.Through in-depth analysis of the reservoir forming conditions of 10 Jurassic reservoirs developed in the Tiebiancheng area of Ordos Basin,the author summarizes two types and four reservoir forming modes in this area.Yan 10 layer is mainly composed of slope-mouth reservoir and mound-mouth reservoir related to paleogeomorphology,and Yan 4+5~Yan 9 layer is mainly composed of lithologic structural reservoir and lithologic updip barrier reservoir related to micro amplitude structure.The reservoir forming model of Jurassic reservoirs in different horizons in Tiebiancheng area is mainly controlled by the reservoir conditions,trap conditions and good preservation conditions under its unique paleosedimentary environment.The study on the reservoir forming model and main controlling factors of Jurassic reservoir in Tiebiancheng area has certain guiding significance for the exploration of Jurassic reservoir in this area.At the same time,it will also play a useful reference for the exploration of this kind of reservoir in other areas of the basin.

关 键 词：铁边城地区 侏罗系油藏 古地貌 三叠系 成藏模式 主控因素 

分 类 号：TE121[石油与天然气工程—油气勘探]