延长气田上古生界气藏储层特征综合研究  

Comprehensive Study on Characteristics of Upper Paleozoic Gas Reservoirs in Yanchang Gasfield

作　　者：李浩[1,2] 陈占军[2,3] 任战利[2] 王力 林进[4] 李云[4] 何剑[4] 

机构地区：[1]陕西延长石油(集团)有限责任公司研究院,陕西西安710075 [2]西北大学大陆动力学国家重点实验室,陕西西安710069 [3]陇东学院能源工程学院,甘肃庆阳745000 [4]陕西延长石油(集团)有限责任公司油气勘探公司,陕西延安716000

出　　处：《西安石油大学学报（自然科学版）》2016年第4期8-13,共6页Journal of Xi’an Shiyou University（Natural Science Edition）

基　　金：国家重大专项专题(编号:2011ZX05005-004-007HZ);国家自然科学基金(编号:41372128);西北大学大陆动力学国家重点实验室科技部专项经费资助

摘　　要：通过对延长气田上古生界本溪组、山西组山2段与山1段、石盒子组盒8段储层的砂岩类型、岩屑组分、粒度分布、孔隙类型、孔喉结构、物性分布等进行综合分析,探讨延长气田上古生界气藏储层的特征。研究结果表明：1目的储集层段主要为石英砂岩、石英岩屑砂岩与岩屑石英砂岩;2碎屑组分以石英为主,其次为岩屑,仅有少量长石;3储层碎屑骨架颗粒主要为中砂,其次为粗砂,粉砂与砾石颗粒较少;4储层孔隙度普遍小于10%,渗透率主要介于（0.005~0.23）×10-3μm2,为致密型储层;5储层层内与层间的非均质强。将该区储层按物性特征划分为4类：优质储层,良好储层,差储层及非有效储层。Yanchang Gasfield is located in the south central of Ordos Basin. Although natural gas is abundant in this field, the research of Upper Paleozoic gas reservoir characteristics in the study area is relatively weak. The characteristics of Upper Paleozoic gas reservoirs in the study area are studied based on the analysis of the sandstone type, lithie composition, particle-size distribution, pore type, pore throat structure and physical property of upper Paleozoic Benxi Formation, Shan 2 member, Shah 1 member, He 8 member reservoirs in Yanchang Gasfield. The research results show ： （1） The objective reservoirs mainly consist of quartz sandstone, quartz-lithic sandstone and lithie-quartz sandstone;2） quartz is main lithic component, cuttings is secondly, and there is only a small amount of feldspar; （3） reservoir skeleton particles are mainly medium sand, coarse sand is secondly, and silty sand and gravel are a little;（4） the reservoirs are tight reservoir, their porosity is generally less than 10% , and their permeability mainly ranges （0. 005 -0. 230 ） × 10 -3 μm2 ;（5） the reservoirs are featured with strongly intrastratal and interlayer heterogeneity. The reservoirs could be divided into four categories according to their physical property ： high-quality reservoir, good reservoir, poor reservoir, and non-reservoir.

关 键 词：上古生界天然气藏 储层特征 延长气田 鄂尔多斯盆地 

分 类 号：TE122[石油与天然气工程—油气勘探] P618.13[天文地球—矿床学]