鄂尔多斯盆地西部奥陶系成藏主控因素分析  

Main controlling factors of Ordovician reservoir formationin western Ordos Basin

作　　者：李慧敏 赵振宇[3] 高建荣[3] 宋微[3] 赖雅庭 赵当妮 蒋婷婷 陈朝兵 LI Huimin;ZHAO Zhenyu;GAO Jianrong;SONG Wei;LAI Yating;ZHAO Dangni;JIANG Tingting;CHEN Zhaobing(School of Earth Sciences and Engineering,Xi’an Shiyou University,Xi’an 710065,China;Shaanxi Key Laboratory of Petroleum Accumulation Geology,Xi’an 710065,China;Research Institute of Petroleum Exploration and Development,PetroChina,Beijing 100083,China;No.2 Gas Production Plant,Changqing Oilfield Company,PetroChina,Xi’an 710200,China)

机构地区：[1]西安石油大学地球科学与工程学院,陕西西安710065 [2]陕西省油气成藏地质学重点实验室,陕西西安710065 [3]中国石油勘探开发研究院,北京100083 [4]中国石油长庆油田分公司第二采气厂,陕西西安710200

出　　处：《复杂油气藏》2023年第2期161-166,共6页Complex Hydrocarbon Reservoirs

基　　金：国家自然科学基金(41802140);国家科技重大专项(2016ZX05050006);陕西省自然科学研究基础计划项目(2019JQ-257);刘宝珺地学科学基金(DMSM2019007)。

摘　　要：鄂尔多斯盆地西部奥陶系表现出较强的勘探潜力,但由于其成藏控制因素不明确,严重制约了天然气的有效开发。以多方面地质资料为基础,系统开展了鄂尔多斯盆地西部奥陶系成藏主控因素研究,建立了成藏模式,为鄂尔多斯盆地西部奥陶系天然气开发提供一定支撑。研究表明,鄂尔多斯盆地西部奥陶系天然气的形成与分布主要受构造运动、有效烃源岩、有效储层发育程度三个主要因素控制。鄂尔多斯盆地西部天然气藏发育“自生自储式”及“上生下储式”两种成藏组合。其中乌拉力克组发育“自生自储式”的成藏模式,克里摩里组发育“上生下储式”的成藏模式。The Ordovician in the western Ordos Basin has strong exploration potential,but its reservoir formation control factors are not clear,which seriously restricts the effective development of natural gas.Based on various geological data,the main controlling factors of Ordovician reservoir formation in the western Ordos Basin were systematically studied,and a reservoir formation model was established,which can provide certain support for the development of Ordovician natural gas in the western Ordos Basin.The results show that the formation and distribution of Ordovician natural gas in the western Ordos Basin is mainly controlled by three main factors,namely the tectonic movement,the effective hydrocarbon source rock,and the development degree of the effective reservoir.The natural gas reservoirs in the western Ordos Basin are developed in two types of reservoir formation:“self-generation and self-storage”and“upgeneration and down-storage”.Among them,Wulalike Formation developed the“self-generation and self-storage”formation mode,while Kelimoli Formation developed the“up-generation and down-storage”formation mode.

关 键 词：成藏主控因素 成藏模式 奥陶系 鄂尔多斯盆地西部 

分 类 号：TE132[石油与天然气工程—油气勘探]