北卡那封盆地沉积演化规律与烃源岩发育特征

发布时间：2018-04-10 09:30

本文选题：北卡那封盆地　切入点：中生代　出处：《西南石油大学学报(自然科学版)》2017年05期

【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。
[Abstract]:In order to study the relationship between Mesozoic sedimentary environment and source rock characteristics in the North Canaofeng Basin, Australia, and based on more than 400 drilling wells and analysis and test data in the basin, the Mesozoic sedimentary evolution law of the basin is studied systematically for the first time.The development characteristics of effective source rocks in North Canaofeng Basin are evaluated and the influence of sedimentary environment on the development of organic matter in source rocks is discussed.It is considered that the Mesozoic sedimentary pattern of the North Canaofeng Basin changed many times due to tectonic activities: the late Triassic developed large delta deposits, and the Jurassic was a shallow sea with uplift and a limited sea deposit.Deltaic-submarine fan deposits were developed locally in early Cretaceous, open sea, semi-deep sea and deep sea sediments in late Cretaceous.There are two sets of high quality source rocks in Mesozoic: upper Triassic Mungaroo delta plain marsh environment inclined source rock and upper Jurassic Dingo limited marine environment dipping source rock, of which the Mungaroo dipping source rock is the main source rock of the basin.
【作者单位】：中海油研究总院;中国石油天然气股份有限公司对外合作经理部;中国石油勘探开发研究院;
【基金】：国家科技重大专项(2011ZX05030-001)
【分类号】：P618.13

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