苏里格东部地区马五_(1-4)亚段储层特征研究  

Reservoir Features of Mawu 1-4 in Eastern Sulige Gas Field

作　　者：赵则 雷卞军[1] 张聪[2] 张林 孙振 

机构地区：[1]西南石油大学研究生院,成都610500 [2]河南油田分公司石油物探技术研究院,河南南阳473132 [3]长庆油田分公司第五采气厂,陕西靖边718500

出　　处：《重庆科技学院学报（自然科学版）》2013年第3期9-12,29,共5页Journal of Chongqing University of Science and Technology：Natural Sciences Edition

基　　金：四川省重点学科建设项目(SZD0816)

摘　　要：苏里格东部地区马五1-4亚段为陆表海蒸发碳酸盐潮坪相,储层以溶蚀孔洞白云岩为主。宏观上岩性较致密,岩心观察仅见构造裂缝和溶蚀孔,局部见溶蚀洞。显微镜下观察储集空间类型多样,发育膏核溶孔、膏晶模溶孔、晶间孔、晶间溶孔等。其中马五14有效储层厚度最大,最厚为116.14 m。研究区储层为低孔低渗储层,岩性和岩相与物性关系密切,控制着原生孔隙的形成,后期的成岩作用决定了次生孔隙的发育程度。Mawu1-4 submember of eastern Sulige Gas Field belongs to evaporated carbonate tidal flat facies,and main lithology of Mawu1-4 reservoir is dolomite dissolution.The rock is generally compact in structure and texture,structure cracks and corrosion caves can be observed in drilling cores,with dissolved holes seen locally.Various types of reservoir space can be found under microscope,including erosion pore of plaster core and crystal mode,inter-crystalline pore and inter-crystalline erosion pore and others.It's about 116.14m of the biggest thickness in Mawu41 reservoir.The reservoir in the study area are low-porosity,low-permeability reservoir,and its lithology and lithofacies are closely related to physical properties and control the formation of the primary porosity.Late diagenetic reformation,includes tectonic activities and dissolution determines the degree of development of secondary pores.

关 键 词：苏东地区 马五1-4 溶蚀孔洞 石膏结核 沉积微相 

分 类 号：TE122[石油与天然气工程—油气勘探]