灰色关联分析法综合评价户部寨气田储层

Evaluation of reservoir for Hubuzhai Gas Field with gray correlation

户部寨气田属低孔低渗致密砂岩储层,储层纵横向差异大、非均质性强、开发难度大。为进一步挖掘气田潜力,通过储层评价明确有利储集相带,引入储层厚度、孔隙度、渗透率、沉积微相等多种评价参数,建立地质模型;采用灰色关联法确定权系数,依据综合得分与产能的关系式确定各网格的储层类型,为气田调整部署提供依据。

Hubuzhai gas field belongs to low porosity and unevenness and difficult for exploitation. We evaluated the low permeability sandstone reservoir. It has strong reservoir with various parameters, such as reservoir thickness, porosity, permeability and sedimentary microfacies index, based on a geological model. Weight factors were determined through the use of gray correlation method, and the reservoir types of each grid were identified to provide evidence for the deolovrnent adjust of gas field.