松辽盆地中央隆起潜山成藏条件及模式  

Accumulation condition and model of buried hill in the Central Uplift,Songliao Basin

作　　者：易士威[1] 李明鹏[1] 徐淑娟[1] 郭绪杰 崔宝文[3] 蒙启安[3] 程宏岗[1] 武雪琼 崔俊峰[1] 王立贤[4] YI Shi-wei;LI Ming-peng;XU Shu-juan;GUO Xu-jie;CUI Bao-wen;MENG Qi-an;CHENG Hong-gang;WU Xue-qiong;CUI Jun-feng;WANG Li-xian(PetroChina Research Institute of Petroleum Exploration&Development,Beijing 100083,China;PetroChina Exploration&Production Company,Beijing 100007,China;Exploration Department of Daqing Oilfield Company,Daqing 163000,China;Exploration Department of Jilin Oilfield Company,Songyuan 138000,China)

机构地区：[1]中国石油勘探开发研究院,北京100083 [2]中国石油勘探与生产分公司,北京100007 [3]大庆油田有限责任公司,黑龙江大庆163000 [4]吉林油田公司,吉林松原138000

出　　处：《天然气地球科学》2020年第12期1663-1676,共14页Natural Gas Geoscience

基　　金：国家科技重大专项“大型气田成藏机制、富集规律与勘探新领域”(编号:2016ZX05007-003)资助。

摘　　要：松辽盆地中央隆起是夹持在东、西两大断陷带之间的大型正向潜山构造带,两侧发育徐家围子、长岭等富油气凹陷,资源十分丰富,是油气长期运移的指向区,成藏条件优越,近期风险探井隆探2井、隆平1井获得突破,证实了该领域巨大的勘探潜力。根据隆起和凹陷的接触关系以及运移通道的组合,构建了断—断双顺型、断—断双反型、断—断顺反型、断—超双顺型、断—超顺反型和超—超双顺型6种供烃方式以及断裂—缝网型、砂砾岩—断裂—缝网型、断裂—不整合—缝网型、砂砾岩—不整合—缝网型及砂砾岩—断裂—缝网—不整合型5种输导体系,并将中央隆起成藏演化及成藏概括为褶皱基底剥蚀夷平阶段、裂隆耦合风化淋滤阶段、中央隆起封盖成藏阶段和中央隆起稳定保存4个阶段。通过解剖和类比中央隆起成藏模式,指出夹持于断陷期富油气凹陷之间的凸起具有和中央隆起相似的成藏条件,具备良好的勘探潜力,是松辽盆地油气勘探的战略接替领域,凸起潜山和内幕是主要的突破目标。The Central Uplift of Songliao Basin is a large positive buried hill tectonic belt clamped between the east and west rift zones,developed several hydrocarbon-rich sags such as Xujiaweizi,Changling,etc.,located in a favorable area of oil and gas multi-period accumulation,therefore the central uplift has superior conditions for hydrocarbon accumulation.According to contact relation of uplift and rift,combination of migration passage,the hydrocarbon supply style can be divided into six types including fault-fault bilateral consequent type,fault-fault bilateral reverse type,fault-fault one consequent and one reverse type,fault-overlap bilateral consequent type,fault-overlap one consequent and one reverse type and overlap-overlap bilateral consequent type.And the passage system can be divided into five types including fault-network fracture type,glutenite-fault-network fracture type,fault-unconformity-network fracture type,glutenite-unconformity-network fracture type,and glutenite-fault-network fracture-unconformity type.Accumulation and evolution model of the central uplift can be divided into four stages,including fold basement denudated stage,rift-uplift coupled weathering-leaching stage,Central Uplift capping and accumulation stage and Central Uplift stable preservation stage.By analyzing and contrasting accumulation model of the central uplift,the uplift between hydrocarbon-rich sags of fault depression period have the same accumulation condition and have beneficial exploration potential,and are the successive domain in oil and gas exploration,thus buried hill and internal are the main breakthrough target.

关 键 词：松辽盆地 中央隆起 供烃方式 输导体系 潜山及内幕 成藏模式 

分 类 号：TE122.1[石油与天然气工程—油气勘探]