准噶尔盆地西北缘下侏罗统八道湾组沉积储层特征综述

A Review of the Sedimentary and Reservoir Characteristics of Badaowan Formation of Lower Jurassic in the Northwest Margin of Junggar Basin

准噶尔盆地为一大型的叠合盆地,油气资源极为丰富。随着勘探理念的转变,勘探目标由中深层逐渐向中浅层转移。主要归纳了西北缘中浅层下侏罗统八道湾组的烃源岩、沉积、储层特征以及储层的评价与预测,结果表明,中浅层储层物性的关键影响因素在于成岩压实作用强弱,剩余原生粒间孔隙型储层相对较好,溶蚀作用对渗透率改善作用不大,这些观点对寻找八道湾组油气藏提供了一定的借鉴作用。

Junggar basin is a large superimposed basin with abundant oil and gas resources.With the change of exploration concept,the exploration target is gradually transferred from the middle and deep layer to the middle and shallow layer.The author has combed the viewpoints of several documents and materials,summed up the source rock,sedimentation,reservoir characteristics and reservoir evaluation and prediction of Badaowan Formation in the middle and shallow layer of lower Jurassic in the northwest margin,and considered that the strength of diagenesis compaction is the key factor to control the reservoir properties of the middle and shallow layer,relative high-quality reservoirs are all residual primary intergranular pore type reservoirs,and the contribution of dissolution to permeability is small,these viewpoints can be used for reference in searching for Badaowan Formation reservoir.