塔里木盆地富满油田富东1井奥陶系重大发现及意义

doi:10.3969/j.issn.1672-7703.2023.01.005

摘要/Abstract

摘要： 位于塔里木盆地阿瓦提凹陷—满加尔凹陷过渡带的富东1井在奥陶系鹰山组2段台缘高能滩获得重大突破，对碳酸盐岩内幕区成藏具有重要意义。通过对富东1井成藏条件、储层特征、油气来源的深入研究，明确了富满油田东部深层寒武系玉尔吐斯组供烃、台缘高能滩成储、上覆致密碳酸盐岩成盖的生储盖组合，并建立了“寒武系供烃、次级网状断裂沟通油源、纵向输导、断控台缘高能滩复合油气成藏”新模式。富东1井的成功钻探，证实了台缘高能滩叠合次级网状断裂改造具备成储成藏能力，突破了早期认为的8000m以下超深层碳酸盐岩高能滩的勘探禁区，拓展了断控碳酸盐岩油气藏模式。同时，也是以台缘高能滩体+次级网状断裂油气藏为勘探思路的成功实践，打开了轮南—富满台缘带勘探新局面，有望引领塔里木盆地超深层复杂海相碳酸盐岩的勘探。

关键词: 塔里木盆地, 富满油田, 台缘高能滩, 次级网状断裂, 富东1井

Abstract: A major breakthrough has been obtained in the high-energy platform marginal beach in the second member of the Ordovician Yingshan Formation in Well Fudong 1 drilled in the transitional zone of Awati Sag-Manjiar Sag in Tarim Basin, which is of great significance to the understanding of hydrocarbon accumulation in the inner carbonate rocks. Based on the in-depth studies on hydrocarbon accumulation conditions, reservoir properties and hydrocarbon sources in Well Fudong 1, the hydrocarbon accumulation assemblage in the eastern Fuman Oilfield is identified, which is composed of source rock of the deep Cambrian Yuertus Formation, reservoir of the high-energy platform marginal beach body, and cap rock of the overlying tight carbonate rocks, as well as a new complex hydrocarbon accumulation pattern is established, namely “hydrocarbon supply by the Cambrian, reservoir and oil source connection by secondary network faults, vertical hydrocarbon transport, and reservoir of fault-controlled high-energy beach body”. The success of Well Fudong 1 confirms that the high-energy platform marginal beach reconstructed by the secondary network faults has the capacities of reservoir development and hydrocarbon accumulation, breaking through the exploration forbidden zone in ultra-deep high-energy beach carbonate rocks with a depth of greater than 8000 m, and expanding the understanding on hydrocarbon accumulation pattern in fault-controlled carbonate reservoir. In addition, it is a successful practice of exploration idea of “high-energy platform marginal beach body + secondary network fault oil and gas reservoir”, which supports to open a new situation of exploration in Lunnan-Fuman platform marginal zone and lead the exploration deployment of ultra-deep complex marine carbonate rocks in Tarim Basin.

中图分类号:

TE112

王清华, 杨海军, 张银涛, 李勇, 杨宪彰, 朱永峰, 韩剑发, 谢舟. 塔里木盆地富满油田富东1井奥陶系重大发现及意义[J]. 中国石油勘探, 2023, 28(1): 47-58.

Wang Qinghua, Yang Haijun, Zhang Yintao, Li Yong, Yang Xianzhang, Zhu Yongfeng, HanJianfa, Xie Zhou. Great discovery and its significance in the Ordovician in Well Fudong 1 in Fuman Oilfield, Tarim Basin[J]. China Petroleum Exploration, 2023, 28(1): 47-58.

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