牛圈湖区头屯河组成岩作用及其对储集层的影响  

Diagenesis of Toutunhe Formation and Its Effect on Reservoir in Niuquanhu Area,Santanghu Oilfield

作　　者：朱永贤[1,2] 孙卫[3] 于锋 

机构地区：[1]中国科学院地质与地球物理研究所,北京100029 [2]中国石油吐哈油田分公司三塘湖采油厂,新疆哈密803009 [3]西北大学地质学系,西安710069

出　　处：《新疆石油地质》2009年第1期43-46,共4页Xinjiang Petroleum Geology

基　　金：国家重大基础研究发展规划"973"项目(2003CB214600);长江学者和创新团队发展计划(IRT0559)联合资助

摘　　要：三塘湖油田牛圈湖区头屯河组储集岩主要为岩屑砂岩,平均孔隙度17.48%,平均渗透率13.18×10-3μm2;孔隙类型主要以粒间孔为主,粒间溶孔、长石溶孔和岩屑溶孔次之,碳酸盐溶孔和杂基溶孔很少。研究区经历的成岩作用主要有:压实作用、胶结作用、交代作用和溶蚀作用,目的层位处于早成岩阶段晚期到晚成岩阶段早期。沉积相、碎屑成分的不同和埋藏条件的差异导致了地区之间成岩作用的差异,胶结作用是造成储集层低渗透的主要原因,机械压实作用次之。The Toutunhe reservoir in Niuquanhu area of Santanghu oilfield is mainly composed of lithic sandstone, with an average porosity of 17.4% and average permeability of 13.18×10^-3μm^2. Its pore types include intergranular pore, intergranular dissolved pore, feldspar dissolved pore, a few cutting dissolved pore and few carbonate dissolved pore and matrix dissolved pore. The diagenesis appeared in the studied area is composed of compaction, cementation, metasomatism and dissolution. The target horizons are found in the late period of early diagenetic stage to the early period of late diagenetie stage. Differences of sedimentary facies, clastic constituents and burial conditions result in the difference of diagenesis in different areas. The cementation is the main reason for low permeability reservoir, followed by mechanical compaction.

关 键 词：三塘湖油田 头屯河组 低渗透 沉积作用 成岩作用 

分 类 号：TE112.23[石油与天然气工程—油气勘探]