苏里格中西部地区石盒子组盒8段测井相分析

Logging Facies Analysis on Shihezi Formation He8 Section in Central and Western Sulige Area

为进一步在苏里格中西部地区寻找有利于天然气储集的砂体,在对该地区石盒子组盒8段常规测井以及电成像测井特征研究基础之上,结合录井地质资料,对该区域盒8段测井相进行了分析,并作出了盒8段下部以及上部的沉积微相平面分布图。研究结果表明盒8段下部主要发育辫状河沉积相,盒8段上部主要发育低弯度曲流河沉积相。盒8段下部沉积时,在研究区中部形成了连片性好、厚度大的砂体;盒8段上部沉积时,砂体的分布范围有所变小。

To further search for sand body that is propitious to gas congregation in central and western region of Sulige area, studied are conventional logging and resistivity imaging logging characteristics in Shihezi formation He8 section in this area, based on which analyzed are the log- ging sedimentary facies in He8 section combining with the mud log geological data. At the same time, the sedimentary microfacies plane distribution chart about the upper and the lower part of the He8 section was made. The above results show that the lower part of He8 section is braided river sedimentary facies, the upper is meandering river sedimentary facies. And the lower part of He8 section forms a continuous and thick sand body. The sand body range of the lower part of He8 section is smaller.