鄂尔多斯盆地西南缘中生界石油勘探思路与对策  

Thoughts and tactics about oil exploration in Mesozoic reservoir on southwest margin of Ordos Basin,China

作　　者：王付斌[1] 赵俊兴[2] 邹敏[2] 邓杰[1] 尹伟[3] 李宇翔[1] 陈纯芳[3] 

机构地区：[1]中国石化华北分公司,郑州450006 [2]成都理工大学沉积地质研究院,成都610059 [3]中国石化石油勘探开发研究院,北京100083

出　　处：《成都理工大学学报（自然科学版）》2015年第4期385-391,共7页Journal of Chengdu University of Technology: Science & Technology Edition

基　　金：国家科技重大专项(2011ZX05002-001)

摘　　要：鄂尔多斯盆地西南缘三叠系延长组主要发育大型岩性圈闭油藏,储层致密,直井自然产能低,如何对其实现经济有效开发一直是困扰地质人员的主要问题之一。作者根据多年油气地质研究,结合勘探实践经验,认为该区油气成藏具有"主源定型、双向排烃、岩性控藏、近源成藏"的特点,油气高产主要受储层品质、油气充满度以及断裂-裂缝发育程度等因素控制,有利的"源、储、疏、高压封存"四元配置是该区石油富集高产的最主要因素,进而提出了针对性的勘探思路与对策,即综合利用勘探开发一体化模式、水平井分段压裂技术和黄土塬三维地震技术可实现经济有效的勘探开发。The Yanchang Formation（Triassic）reservoir in the southwest of Ordos Basin is a large scale typical lithological reservoir.Because the reservoir is tight and the natural productivity of the vertical well is low,and how to achieve economic development is the main problem to puzzle the geological workers.Based on long-term research of oil and gas and combined with the oilfield exploration experiences,the authors indicates that the oil and gas accumulation in this area is characterized by＂the main source rock determines the type,the expulsion of hydrocarbon is in two ways expulsion of the lithology controls the reservoir,and the oil accumulation nears source rocks＂.The high production of the oil and gas is mainly controlled by the quality of reservoirs,the hydrocarbon-filling degree and the development of fault-fractures.The favorable disposition with＂source rock,reservoir,migration and high-pressure seal＂is the most critical factor controlling oil accumulation with high productivity of this area.Based on the above,the authors put forward thethoughts and tactics for exploration,that is,the comprehensive utilization of exploration and development methods,the effective use of hydraulic fracturing technology in horizontal wells and 3D seismic technology in loess tableland can make this reservoir＇s exploration and development efficiently and economically.

关 键 词：鄂尔多斯盆地 中生界 油气成藏 高产主控因素 勘探技术对策 

分 类 号：TE132[石油与天然气工程—油气勘探]