准噶尔盆地中拐凸起三叠系克拉玛依组油气成藏主控因素分析

Analysis on Main Controlling Factors of Oil and Gas Accumulation in the Triassic Karamay Formation of Zhongguai Uplift in Junggar Basin

高明 胡婷婷 陈国军 张进 李静

GAO Ming HU Tingting CHEN Guojun ZHANG Jin LI Jing

中国石油天然气有限公司新疆油田分公司勘探开发研究院, 乌鲁木齐 830011

Exploration and Development Research Institute, Xinjiang Oilfield Company, CNPC, Urumqi, Xinjiang 830011, China

准噶尔盆地中拐凸起是一大型继承性古隆起，断裂关系错综复杂，三叠系克拉玛依组储层呈薄互层状，具有大面积含油、多层段含油的特征。文章从储层特征、成藏条件、控藏因素等方面对油藏进行了深入研究。分析认为：古隆起是该区大面积成藏的宏观背景；油藏主要受古隆起、断裂和沉积相3个因素的控制。此研究可为该地区油气勘探提供决策依据。

Zhongguai uplift is a large inherited paleo-uplift with complex fault relationships in Junggar Basin. And the reservoirs of the Triassic Karamay Formation are thin interbedded with the features of large oil-bearing and multi-layer oil-bearing. In this article, researches were conducted in the reservoir characteristics, reservoir forming conditions, reservoir controlling factors and other aspects. The analysis shows that:the paleo-uplift is the macro-background of large accumulation in the area; the reservoir is mainly controlled by three factors:paleo-uplift, fault and sedimentary facies. This study can provide a decision-making basis for oil and gas exploration in this area.

https://doi.org/10.3969/j.issn.1008-2336.2019.01.006