南华北地区上古生界储层影响因素分析  

Influential factors of Upper Paleozoic reservoirs in the south of North China

作　　者：杜建波[1,2] 田景春[1] 何明喜[2] 张翔[1] 马荣芳[2] 

机构地区：[1]油气藏地质及开发工程国家重点实验室(成都理工大学),成都610059 [2]中国石化河南油田研究院,河南南阳473132

出　　处：《成都理工大学学报（自然科学版）》2012年第5期496-501,共6页Journal of Chengdu University of Technology: Science & Technology Edition

摘　　要：利用南华北地区露头、钻井等资料,对上古生界储层影响因素进行分析。南华北地区上古生界储层主要受沉积作用、成岩作用和构造演化等因素影响。其中,海陆过渡相三角洲沉积决定了区内储集岩主要为中—细砂岩,物性以低孔-低渗为主,平均孔隙度为2%～3%,渗透率为0.05×10-3～0.4×10-3μm2;成岩作用影响储集空间的演化过程和储层孔隙结构特征,区内储集空间类型以孔隙型和裂隙型为主;区内构造演化对储层物性的影响以"建设性"为主。综合评价认为,南华北地区上古生界是开展致密砂岩岩性油气藏勘探的重点层系。This paper analyzes the influential factors of the Upper Paleozoic reservoirs in the south of North China based on the outcrop and drilling data.The Upper Paleozoic reservoirs are controlled by sedimentation,diagenesis and the tectonic evolution.The reservoir rocks are dependent on the delta deposits of the marine-continental transition.They are low porosity and low permeability,and consist mainly of fine grained sandstones and medium grained sandstones.The evolution of reservoir pore space and the characteristics of pore structure are influenced by diagenesis.The fractures and pores are the main types of the reservoir pore space in the south of North China.The influence of tectonic evolution on the reservoir property is ＂constructive＂.The comprehensive evaluation indicates that the Upper Paleozoic is the key stratum to explore tight sandstone lithologic oil-gas reservoirs in the south of North China.

关 键 词：南华北地区 上古生界 三角洲砂体 沉积作用 成岩作用 构造演化 岩性油气藏 

分 类 号：TE122.21[石油与天然气工程—油气勘探]