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Tectonic evolution and oil and gas accumulation analysis of Dongwan anticline in west of south margin of Junggar Basin, China;

准噶尔盆地南缘西部东湾背斜带构造演化及含油气性分析

The drain character and hydraulic linking are studied by analyzing the property of water-bearing and water-resisting,groundwater flowing and hydrochemistry character in Libi Gorge anticline.

通过对沥鼻峡背斜地层含水性、隔水性、地下水流向及其水化学特征的研究,得出了该区地下水的径流特征及其水力联系,并据此研究了该区水文地质对煤层气富集的控制规律。

Dongwan anticline is located in the southern margin of Junggar basin with better source, reservoir and cap rocks.

东湾背斜位于准噶尔盆地南缘,其烃源岩、储集层以及盖层等条件都较好,且采用多种地球物理及地质方法,通过多次论证,证明构造是落实的,但2003年完钻的东湾1井钻探结果却无任何油气显示。

Forming pattern of self-generating and self-preserving reservoirs in reversal anticline structure;

反转背斜构造自生自储油藏成藏模式

The reservoir formation characteristic is “anticline structure controls hydrocarbon acc.

东庄油田位于凹陷西南部,是在背斜构造背景上被一组与背斜长轴走向一致的南倾正断层切割的复杂断块油田;储集层以西北部的沙堰三角洲前缘砂体、粉细砂岩为主;“背斜构造控制油气聚集范围、砂体决定油气富集程度、断层起油气再分配和遮挡作用”是其主要成藏特征;油层埋藏深、厚度薄、含油层段集中,平面上主要分布在东庄背斜构造北翼,南翼分布比较零散,纵向上主要集中在核桃园组二段至三段;油藏类型以断鼻、断块为主。