东濮凹陷桥口深层气藏储层物性特征及控制因素分析

利用东濮凹陷桥口地区的地质、测井和化验分析资料，从沉积微相、成岩作用、岩石结构等多方面入手，对其储层物性特征和控制因素进行了研究，指出桥口深层气藏湖底扇中扇辫状水道砂体物性较好，为有利储集层；该储层孔隙类型以次生溶蚀粒间孔隙为主，岩石粒度较细、分选中-差、以点-线接触为主；片状或弯片状喉道所占份额较大，造成储层低孔低渗；受溶蚀和交代作用的影响，部分层位次生孔隙发育，深层中也存在物性较好的储层。

Physical Properties and Control Factors in Qiaokou Deep Gas Reservoir

Reservoir attributes change quickly in the Qiaokou deep gas reservoir in the Dongpu depression, so the reservoir assessment is difficult to be done. Using data of geology, well logging, and laboratory testing, this paper researches on different aspects of the reservoir, such as sediment microfacies, diagenesis, rock texture and so on. The sand body of channel in the middle sublacustrine fan has good porosity and is favorable reservoir. Secondary chemical erosion intergranular pores are the main pore type, the grain size of rock is small, the sorting is middle or bad, and dot\|line contact is the major form. The flaky and curved lamellar throat is major proportion, so the reservoir is low porosity and permeability. Due to chemical erosion and metasomatism, some formations have developed secondary pores, and favorable reservoirs can also be found in deep layers.