火山岩储层孔隙结构分类与分布评价：以松辽盆地徐东地区营城组一段火山岩储层为例
来源期刊：中南大学学报(自然科学版)2013年第4期
论文作者：陈欢庆 蒋平 张丹锋 李佳鸿
文章页码：1453 - 1463
关键词：徐东地区；营城组；火山岩储层；孔隙结构；气田开发
Key words：Xudong Area; Yingcheng Formation; volcanic reservoir; pore structure; gas field development
摘 要：为分析明确火山岩储层孔隙结构发育特征，为气田有效开发提供参考。利用63块岩心观察和薄片资料以及206块样品分析测试资料对松辽盆地徐东地区营城组一段火山岩储层孔隙结构特征进行了统计分析和聚类评价。研究结果表明：研究区目的层属中低孔低渗储层，不同火山岩性孔隙结构差异大、非均质性强。孔隙度、渗透率和孔喉半径中值这3个参数为孔隙结构聚类评价的最佳指标，孔隙结构可以划分为Ⅰ，Ⅱ，Ⅲ和Ⅳ 4类，以Ⅲ和Ⅳ类为主。孔喉分布不均，不同区域和不同层位差异较大，整体上喉道连通性较差。平面上主力层YC1I1小层中，Ⅰ类和Ⅱ类孔隙结构主要发育在研究区中部偏西部以及中部偏东北部的区域。
Abstract: In order to make sense of development characteristics of volcanic reservoir and to help empolder volcanic reservoir effectively, pore structure characteristics of volcanic reservoir of the Member1 of Yingcheng Formation in Xudong Area in Xushen Gas Field were studied. 63 cores data and 206 analyzing-testing data were used. The results indicated that the reservoir in study area was middling-low in pore and permeability, and permeability was higher in some areas because of fractures developed. Physical properties and pore structures were different in different lithologies. And heterogeneity of pores strongly developed. Pore and permeability and pore median radius were best parameters to evaluate pore structure. Pore structure could be carved up into four types of Ⅰ, Ⅱ, Ⅲ and Ⅳ. And type Ⅱ and type Ⅲ took the leading roles. Pores and throats distributed inhomogeneously, and they were different in different areas or layers. As a whole, the connectivity of throats was poor. Type Ⅰ and type Ⅱ of pore structure mainly developed in the areas of west and northeast of the central section in the dominating layer of YC1I1 in plane.
陈欢庆，蒋平，张丹锋，李佳鸿
(中国石油勘探开发研究院，北京，100083)
摘 要：为分析明确火山岩储层孔隙结构发育特征，为气田有效开发提供参考。利用63块岩心观察和薄片资料以及206块样品分析测试资料对松辽盆地徐东地区营城组一段火山岩储层孔隙结构特征进行了统计分析和聚类评价。研究结果表明：研究区目的层属中低孔低渗储层，不同火山岩性孔隙结构差异大、非均质性强。孔隙度、渗透率和孔喉半径中值这3个参数为孔隙结构聚类评价的最佳指标，孔隙结构可以划分为Ⅰ，Ⅱ，Ⅲ和Ⅳ 4类，以Ⅲ和Ⅳ类为主。孔喉分布不均，不同区域和不同层位差异较大，整体上喉道连通性较差。平面上主力层YC1I1小层中，Ⅰ类和Ⅱ类孔隙结构主要发育在研究区中部偏西部以及中部偏东北部的区域。
关键词：徐东地区；营城组；火山岩储层；孔隙结构；气田开发
CHEN Huanqing, JIANG Ping, ZHANG Danfeng, LI Jiahong
(Research Institute of Petroleum Exploration and Development, PetroChina, Beijing 100083, China)
Abstract:In order to make sense of development characteristics of volcanic reservoir and to help empolder volcanic reservoir effectively, pore structure characteristics of volcanic reservoir of the Member1 of Yingcheng Formation in Xudong Area in Xushen Gas Field were studied. 63 cores data and 206 analyzing-testing data were used. The results indicated that the reservoir in study area was middling-low in pore and permeability, and permeability was higher in some areas because of fractures developed. Physical properties and pore structures were different in different lithologies. And heterogeneity of pores strongly developed. Pore and permeability and pore median radius were best parameters to evaluate pore structure. Pore structure could be carved up into four types of Ⅰ, Ⅱ, Ⅲ and Ⅳ. And type Ⅱ and type Ⅲ took the leading roles. Pores and throats distributed inhomogeneously, and they were different in different areas or layers. As a whole, the connectivity of throats was poor. Type Ⅰ and type Ⅱ of pore structure mainly developed in the areas of west and northeast of the central section in the dominating layer of YC1I1 in plane.
Key words:Xudong Area; Yingcheng Formation; volcanic reservoir; pore structure; gas field development
