运用成像测井评价沙雅隆起北部潜山油气藏白云岩储层
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摘要
沙雅隆起北部潜山油气藏白云岩储层裂缝、溶蚀孔洞发育,是主要的储集层段。常规测井资料在评价缝洞型储层时存在一定的多解性,运用XRMI成像测井则能准确识别裂缝类型,计算裂缝产状以及分析溶蚀孔洞发育情况。通过对成像测井资料的研究表明,白云岩储层裂缝为未被充填的高导缝,主要的类型有斜交缝、网状缝与高角度缝,将白云岩储层划分为裂缝型、孔隙型与孔隙—裂缝型三种类型。利用裂缝充填度以及裂缝走向与地层现今最大水平主应力方向的关系进行分析可知,裂缝的有效性好,是主要的储集空间及渗滤通道。
The dolomite reservoir of buried hill reservoir in the northern of Shaya uplift is major reservoir section which is mainly composed of fractures and dissolution pores. Conventional logging has certain multiple solutions when evaluating fracturevuggy reservoir. XRMI imaging logging can be used to accurately identify fracture types,calculate fracture occurrence and analyze the development of dissolution pores. The research on imaging logging data shows that fractures in the dolomite reservoir are highconductivity fractures which are unfilled,and the main types are oblique fractures,reticular fractures and high-angle fractures. The dolomite reservoir is divided into fractured reservoir,porosity reservoir,and porosity-fractured reservoir. It can be seen from the analysis of fracture filling degree and the relationship between fracture strike and the direction of the maximum horizontal principal stress of the formation at present that the fracture is effective.
The dolomite reservoir of buried hill reservoir in the northern of Shaya uplift is major reservoir section which is mainly composed of fractures and dissolution pores. Conventional logging has certain multiple solutions when evaluating fracturevuggy reservoir. XRMI imaging logging can be used to accurately identify fracture types,calculate fracture occurrence and analyze the development of dissolution pores. The research on imaging logging data shows that fractures in the dolomite reservoir are highconductivity fractures which are unfilled,and the main types are oblique fractures,reticular fractures and high-angle fractures. The dolomite reservoir is divided into fractured reservoir,porosity reservoir,and porosity-fractured reservoir. It can be seen from the analysis of fracture filling degree and the relationship between fracture strike and the direction of the maximum horizontal principal stress of the formation at present that the fracture is effective.
引文
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[5]朱小露,贺洪举,刘瑞林,等.川中地区震旦系灯影组白云岩储层成像孔隙度分布谱响应特征研究[J].石油天然气学报,2013,35(4):83-88.
[6]陈丽祥,彭博,程流,等.塔里木盆地沙雅隆起雅克拉断凸储层储集性研究及评价[J].内蒙古石油化工,2010,22:116-118.
[2]仵永强,郑伟东.塔里木盆地三道桥地区潜山储层预测[J].断块油气田,2013,20(4):439-442.
[3]费剑玮,杨红彩,周芳芳,等.塔里木盆地雅克拉断凸及周缘前中生界白云岩储层成因与勘探潜力[J].石油实验地质,2015,37(3):286-292.
[4]韩强,杨子川,李弘艳,等.塔里木盆地沙雅隆起北部三道桥潜山结构与储层特征[J].地球科学与环境学报,2017,39(1):103-113.
[5]朱小露,贺洪举,刘瑞林,等.川中地区震旦系灯影组白云岩储层成像孔隙度分布谱响应特征研究[J].石油天然气学报,2013,35(4):83-88.
[6]陈丽祥,彭博,程流,等.塔里木盆地沙雅隆起雅克拉断凸储层储集性研究及评价[J].内蒙古石油化工,2010,22:116-118.