徐深气田火山岩储层单井裂缝描述与评价  

Volcanic reservoir fracture description and evaluation of single well in Xushen gas field

作　　者：曲立才[1] 

机构地区：[1]大庆油田有限责任公司勘探开发研究院,黑龙江大庆163712

出　　处：《大庆石油学院学报》2010年第2期43-47,共5页Journal of Daqing Petroleum Institute

基　　金：国家"973"重点基础研究发展计划项目(2009CB219307)

摘　　要：为评价裂缝对单井产能的影响,应用岩心描述、CT图像分析、常规测井等方法,对徐深气田裂缝发育特征进行了研究,同时利用测井资料定性或定量识别裂缝、计算裂缝孔隙度及裂缝密度等参数、确定裂缝方向.结果表明:火山岩储层以裂缝-孔隙性型为主,孔隙型次之,孔隙-裂缝型最少;火山岩I类储层以高角度缝为主,裂缝的有效性好,II类储层以微裂缝为主,裂缝的有效性较好,III类储层以微裂缝为主,裂缝的有效性差;裂缝方向主要为北北西向、北东向.To evaluate the impact of fracture on single well productivity methods such as core description,CT image analysis,conventional logging and so on are applied to study development feature of fracture in Xushen gas field.And simultaneously logging data are applied to qualitatively or quantitatively identify and calculate fracture parameters such as porosity and density and define fracture direction.The results demonstrate that in volcanonic reservoir fracture-pores formation take dominant place followed pores and the least is pores-fracture type;main pores of Ⅰ,Ⅱ,Ⅲ grade volcano reservoir are respectively high level fracture with good effectiveness,micro-fracture with relatively good effectiveness and micro-fracture with relatively poor effectiveness.Main direction of fractures are NNW and NE.

关 键 词：火山岩储层 裂缝孔隙度 裂缝密度 裂缝方向 单井裂缝 

分 类 号：TE121[石油与天然气工程—油气勘探]