北卡那封盆地沉积演化规律与烃源岩发育特征  

The Sedimentary Facies Evolution and the Development Characteristics of Source Rocks' in North Carnarvon Basin, Australia

作　　者：杨婷 康洪全 刘东旭[2] 李欣 赵忠英[3] YANG Ting;KANG Hongquan;LIU Dongxu;LI Xin;ZHAO Zhongying(CNOOC Research Institute, Chaoyang, Beijing 100028, China;PetroChina Foreign Cooperation Administration Department, Dongcheng, Beijing 100007, China;Petrochina Research Institute of Petroleum Exploration & Development, Haidian, Beijing 100083, China)

机构地区：[1]中海油研究总院,北京朝阳100028 [2]中国石油天然气股份有限公司对外合作经理部,北京东城100007 [3]中国石油勘探开发研究院,北京海淀100083

出　　处：《西南石油大学学报（自然科学版）》2017年第5期81-91,共11页Journal of Southwest Petroleum University(Science & Technology Edition)

基　　金：国家科技重大专项(2011ZX05030-001)

摘　　要：以研究澳大利亚北卡那封盆地中生代沉积环境与烃源岩特征的关系为目的,根据盆地内400余口钻井及分析测试资料,首次系统开展了盆地中生代沉积演化规律研究,评价了北卡那封盆地有效烃源岩发育特征,深入探讨了沉积环境对烃源岩有机质发育的影响。研究认为,受构造活动的影响,北卡那封盆地中生代沉积格局发生多次转变:晚三叠世发育大型三角洲沉积,侏罗纪为隆拗相间的浅海、局限海沉积,早白垩世局部发育三角洲—海底扇沉积,晚白垩世为开阔海、半深海—深海沉积。盆地中生代发育两套优质烃源岩:上三叠统Mungaroo组三角洲平原沼泽环境倾气型烃源岩和上侏罗统Dingo组局限海环境倾油型烃源岩,其中Mungaroo组倾气型烃源岩为盆地主要的供烃层系。The main purpose of this study was to investigate the relationship between the Mesozoic sedimentary environment and the characteristics of the source rocks of the North Carnarvon Basin in Australia.Employing information gleaned from more than400drilling wells and the test data of the basin,the Mesozoic sedimentary evolution of the basin was characterized for the first time.In addition,the characteristics of the development of the source rock were evaluated,and the influence of the sedimentary environment on hydrocarbon development in the source rock is discussed.The research shows that the sedimentary pattern in the Mesozoic transformed the North Carnarvon Basin several times,e.g.,in the Late Triassic,a large sedimentary delta developed;in the Jurassic,a concave and convex shallow sea developed,with restricted marine deposition;in the Early Cretaceous,fan delta-submarine fan delta sedimentary deposits developed locally;and,in the Late Cretaceous,an open sea developed,with bathyal-abyssal sea deposition.In the Mesozoic,two high-quality source rocks developed,including gas-type source rocks in the Mungaroo Group delta-plain swamp environment during the Upper Triassic,and oil-type source rocks in the restricted marine environment of the Dingo Group during the Upper Jurassic.The gas-type source rock of the Mungaroo Group is the source of hydrocarbon generation in the basin.

关 键 词：北卡那封盆地 中生代 沉积演化 烃源岩 三角洲 局限海 

分 类 号：TE122[石油与天然气工程—油气勘探]