东湾背斜构造特征与油气聚集

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.""1 年完钻的东湾$ 井钻探结果却无任何油气显示。在深入了解准噶尔盆地南缘区域构造背景的基础上，探讨了东湾背斜构造演化过程、形成机制以及其油气成藏条件，总结出东湾背斜的油气聚集规律，指出在东湾地区可能存在的两种油气藏模式。

Structural Characteritics and Hydrocarbon Accumulation in Dongwan Anticline

Dongwan anticline is located in the southern margin of Junggar basin with better source, reservoir and cap rocks. Its structures were proved by multi-demonstration with many geophysical and geological methods. However, there was no oil-gas indication from Dongwan-1 Well that was completed in 2003. In-depth understanding of the southern margin regional setting is made, the structural evolution, shape mechanism and hydrocarbon accumulation conditions are discussed, and the oil-gas accumulation pattern is summarized. Finally, two types of petroleum accumulation/reservoir models possibly existed in Dongwan area is presented in this paper.