摘要
针对川西新场气田JS12气藏开展了多参数的综合评价研究,多参数包括储层参数、裂缝参数、储层分类厚度参数。首先,开展了储层参数及裂缝参数的计算,以岩心分析结果为依据,建立了孔隙度、渗透率、含水饱和度计算模型。利用铸体薄片进行了微裂缝识别,对样品的裂缝参数和测井曲线进行相关分析,建立了测井计算裂缝参数的数学模型;其次,对储层进行聚类分析,通过聚类将储层分为三类;最后,将计算的裂缝参数、储层分类中的Ⅰ类储层厚度、孔渗饱等参数进行正态化处理,拟和测试的无阻流量与这些参数建立多元回归计算模型,即综合含气指标的数学计算模型。以综合含气指标为主要依据,进行储层综合分类和评价,指出了有利的含气区域和可供挖潜井的建议。该方法在指导气藏开发中获得了良好效果。
An integrated method using a multi-parameter approach is used to evaluate me reservoir Shaximiao formation （JS2^1） in Xinchang Gas Field of west Sichuan. The multi-parameter method utilizes the parameters of the reservoir, the fracture, and the reservoir thickness classification. First, the reservoir and fracture parameters are calculated. Based on the result of core analysis, computation models are established for porosity, permeability and water saturation. Using cast slice to identify micro-fracture and to correlate the logging value with the fracture parameters from the sample analysis, a mathematic model is built to calculate fracture parameters from logging data. Then the cluster analysis of the reservoir is performed. The analysis clusters the reservoir into three types. Lastly, we normalize the fracture parameter, thickness, porosity, permeability and saturation of class-Ⅰ reservoir. These parameters are fitted with the productivity tested to establish a multi-regression model as the mathematic model of gas bearing compositional index. Based mainly on the index, we perform the integrated classification and evaluation of the reservoir. The developed multi-parameter method proposes promising gas bearing zones and some senile wells to be instillings new life. This method has successfully guided the development of gas reservoirs.
出处
《测井技术》
CAS
CSCD
2006年第5期416-419,共4页
Well Logging Technology
关键词
测井解释
储层
裂缝参数
储层分类
含气指标
川西
新场气田
log interpretation
reservoir
fracture parameter
reservoir classification
gas index
Western Sichuan
Xinchang Gas Field
