摘要
Abstract
In order to solve the problems during the development process of the E31 reservoir in the Qie12 block,reservoir pore structure and property characteristics have been comprehensively studied in the area based on the cores,thin sections,SEM,physical properties and mercury intrusion analysis.The study indicates that the area contains conglomerate deposits of coarse particles,and the reservoir rock types are mainly the debris-feldspar and feldspathic lithic sandstone.There are various types of reservoir pores,primarily intergranular pores followed by fractures(structural fractures) and all kinds of secondary pores.The mecury injection experiments show that the conglomerate has the thickest hole roar radius and the best permeability,and the pore structure types can be divided into four categories,the mainly types Ⅲ (finepore throat and macropore),Ⅳ (finepore throat and small pore).The reservoir is the low porosity and extra-low permeability reservoir in the area,but the correlation between porosity and permeability is better.The reservoir property is controlled by sedimentation,diagenesis and tectonism.关键词
储层物性/储集空间/孔隙类型/孔隙结构/切12区Key words
reservoir physical property/reservoir space/pore type/pore structure/Qie12 block分类
天文与地球科学
