大港油田孔南地区上石盒子组碎屑岩储层物性控制因素  

Controlling factors of the clastic reservoirs in the Upper Shihezi Formation,southern Kongdian,Dagang Oil Field

作　　者：祝新政[1] 李勇[1] 丘东洲[2] 肖敦清[3] 蒲秀刚[3] 刘子藏[3] 袁淑琴[3] 段润梅[3] 张威[1] 张自力[1] 曹兴[1] 王锦程[1] 鲍居彪 

机构地区：[1]成都理工大学油气藏地质及开发工程国家重点实验室,四川成都610059 [2]成都地质矿产研究所,四川成都610081 [3]大港油田勘探开发研究院,天津300280 [4]中国石油东方地球物理公司,河北涿州072751

出　　处：《沉积与特提斯地质》2011年第1期59-64,共6页Sedimentary Geology and Tethyan Geology

基　　金：全国油气资源战略选区调查与评价国家专项(2009GYXQ17);国家自然科学基金项目(40972083)

摘　　要：通过对储层物性数据资料的分析和整理,研究了孔南地区上石盒子组碎屑岩储集层特征及其控制因素。结果表明:研究区上石盒子组碎屑岩储层为低孔低渗储层,渗透率与孔隙度呈正相关性。储层孔隙的连通性好,属于孔隙型储层。孔隙类型以次生粒间溶孔为特征。晚成岩期,岩屑、填隙物、长石颗粒以及高岭石发生溶蚀,产生了大量的次生孔隙,改善了储层物性。沉积条件、压实作用、胶结作用和溶蚀作用是控制储层性质的主要因素。The clastic reservoirs in the Upper Shihezi Formation,southern Kongdian,Dagang Oil Field are expected to be the favourable area for the Palaeozoic petroleum exploration.The present paper deals with the lithology and physical properties of the clastic reservoirs and their controlling factors on the basis of cores and cast thin sections,SEM,X-ray diffractional patterns and vitrinite reflectance.The clastic reservoirs in the Upper Shihezi Formation are made up of low-porosity and low-permeability reservoirs.There a positive correlation between the porosity and permeability.The clastic reservoirs are well connected,and assigned to the porosity-type reservoirs.The porosity type is dominated by secondary intergranular solution openings.During the late diagenesis,the dissolution of lithoclastics,interstitial material,feldspar grains and kaolinite brought about abundant secondary pores,and resulted in the improvement of the porosity and permeability of the clastic reservoirs.The major controlling factors include sedimentary facies,compaction,cementation and dissolution.

关 键 词：大港油田 上石盒子组 储层物性 碎屑岩储集层 

分 类 号：TE122.222[石油与天然气工程—油气勘探]