台北凹陷七克台构造中侏罗统碎屑岩储层成岩作用

THE DIAGENESIS OF CLASTIC ROCK RESERVOIRS IN THE QIKETAI STRUCTURES OF THE TAIBEI DEPRESSION DURING THE MIDDLE SERIES OFTHE JURASSIC SYSTEM

在分析吐哈盆地台北凹陷七克台构造中侏罗统碎屑岩储层岩石学、储层物性特征的基础上,通过 8 口井的薄片鉴定观察、压汞资料、阴极发光、扫描电镜、X 衍射等分析资料,研究了七克台构造中侏罗统碎屑岩的成岩作用特征,确定了它们的成岩作用阶段,分析了它们对储层物性的影响.其储集空间类型主要有:粒间溶孔、粒间孔、粒内溶孔及溶缝、颗粒内裂隙、晶间微孔等.

This article describes the analysis of clastic rock reservoir petrology and the reservoir natural characteristic foundation in the Qiketai structures of the Tuha basin, Taibei Depression in the middle series of Jurassic system. Using thin slice appraisals, the pressure mercury material, cathode luminescence, scanning analysis chemical examination material, electricity mirror and X diffraction of eight wells, the Qiketai structures and clastic rock diagenesis characteristic in the middle series of Jurassic system has been studied to determine diagenesis stages and natural reservoir influence. Reservoir space mainly has dissolution intragranual pore, intragranual pore, dissolution seam, stamp hole, the pellet between the crevasse, and crystal pore.