靖边油田长6油层组储层特征及物性影响因素  

Reservoirs Characteristics and Influence Factors of Chang 6 Oil-Bearing Group in Jingbian Oilfield

作　　者：党犇[1] 赵虹[1] 向连格[1] 燕洲泉[2] 张杰[3] 康晓燕[1] 仵康林[1] 葛海影[1] 

机构地区：[1]长安大学地球科学与资源学院,陕西西安710054 [2]西安地质矿产研究所,陕西西安710054 [3]长庆油田分公司第一采油厂,陕西延安716009

出　　处：《西北地质》2010年第3期127-131,共5页Northwestern Geology

基　　金：中国地质调查局"西北中小盆地群油气资源远景调查"项目(1212010733506)

摘　　要：通过大量岩心铸体薄片、黏土矿物X衍射、扫描电镜及物性等资料分析,总结研究了靖边油田长6油层组的储层特征及影响因素。结果表明:长6储层具有成分成熟度低、结构成熟度高的岩石学特点。孔隙类型为浊沸石溶孔-长石溶孔-残余粒间孔组合,物性特征为中孔、特低渗透型和超低渗透型为主,局部为低渗透型。孔隙结构为细孔-微孔、细喉-微细喉型。影响储集性能的因素主要表现为两方面:平面上受三角洲平原亚相沉积相带的控制;纵向上受成岩作用的影响。The characteristics and influence factors of Chang 6 Formation reservoirs in the Jingbian Oilfield are studied based on the data of drilling cores,costing thin sections,X-ray diffraction of clay,SEM （scanning electron microscopy）,as well as physical property in the area.The result shows that it has the petrological characteristics of lower mineral and high structure maturity.Its pore types are combinations of laumontite dissolution pores-feldspar dissolution pores-primary intergranular pores.The physical property represents that Chang 6 reservoirs are of medium-porosity extra-low to ultra-low permeability,locally of low permeability.The pore texture types are fine to micro pore with fine to micro-fine throat.The main factors affecting reservoir property are the distribution of delta plain facies in the plane and diagenesis in the vertical.

关 键 词：储集层 影响因素 长6油层组 靖边油田 鄂尔多斯盆地 

分 类 号：TE122.2[石油与天然气工程—油气勘探]