中国地质2024，Vol.51Issue(3)：799-810,12.DOI:10.12029/gc20211010001
新疆库车坳陷东部中—新生代构造-热演化与油气勘探远景分析
Meso-Cenozoic tectono-thermal evolution and prospect analysis of oil and gas exploration of the eastern Kuqa Depression in the Tarim Basin
摘要
Abstract
[Objective]Kuqa Depression is rich in oil and gas resources,but the study of tectonic-thermal evolution related to oil and gas generation and preservation is very weak.[Methods]In this study,the apatite fission track test analysis and thermal history simulation were carried out on typical drilling samples in the eastern part of Kuqa Depression.The tectonic-thermal evolution history of the eastern part of Kuqa Depression since Mesozoic was accurately reconstructed,and the maturity evolution period of source rocks was evaluated.[Results]The apatite fission track ages measured by in-situ LA-ICP-MS are between 77.7 Ma and 104.5 Ma,which are much smaller than the stratigraphic age,and the rapid uplift events of Late Cretaceous are effectively recorded.The thermal history simulation reveals that Kuqa Depression has experienced two periods of rapid uplift since Jurassic(Early Cretaceous-Late Eocene(120-40 Ma)and Late Miocene-present(10-0 Ma)),which are caused by the remote effect of the collision between Lhasa plate,Indian plate and the southern margin of Eurasia plate.[Conclusions]The differential tectonic uplift in Kuqa Depression is caused by the subduction and compression of the southern Tianshan Mountains gradually advancing from north to south.The Jurassic source rocks in Kuqa Depression show a multi-stage mature evolution model under the influence of multi-stage subsidence.Affected by tectonic uplift events,the Jurassic source rocks mature evolution was at a stagnation stage from early Cretaceous to late Eocene and late Miocene.This study determines the tectonic-thermal evolution history of eastern Kuqa Depression since Mesozoic,and clarifies the mature evolution process of main source rocks,which have important guiding significance for regional tectonic evolution and next oil and gas exploration.关键词
石油天然气/烃源岩热演化/热史模拟/磷灰石裂变径迹/构造-热演化/构造隆升/油气地质勘查工程/库车坳陷东部/新疆Key words
oil and gas/thermal evolution of source rock/thermal history simulation/apatite fission track/tectonic-thermal evolution/structural uplift/oil and gas geological exploration engineering/eastern Kuqa Depression/Xinjiang分类
天文与地球科学引用本文复制引用
张军振,常健,李晨星,冯乾乾,张海祖,李丹..新疆库车坳陷东部中—新生代构造-热演化与油气勘探远景分析[J].中国地质,2024,51(3):799-810,12.基金项目
国家自然科学基金项目(41972125)资助. Supported by the National Natural Science Foundation of China(No.41972125). （41972125）
