常规测井技术在安塞油田王窑区裂缝识别中的应用

The application of conventional logging technique to identify the fractures in Wangyao area in Ansai Oilfield

储层裂缝是影响低孔、低渗油藏开发效果的关键因素,如何精确识别和评价裂缝是进行注水开发和调整挖潜的前提。由于常规测井资料容易获得,技术分析比较成熟,本文结合了该区地质特征,采用常规测井资料进行裂缝识别。在与岩心实验资料标定的基础上,建立起测井响应的识别模板,确定了裂缝参数。应用该模板对本区所有井进行了裂缝识别和分析。结果表明,裂缝分布与本区油水井生产动态吻合较好,该技术极大地改善了注水开发与井网部署的应用效果。

Reservoir fracture is the key factor which affects the low porosity and low permeability reservoir development effect, and how to accurately identify and evaluate the fracture is predicated on the flood and adjustment. Since the conventional log information is easily accessible and technical analysis is more mature, so the conventional log information are used to identify the fracture combined with the geological characters .On the basis of the calibration with core testing material, established log response templates and calculate the fracture parameters. The fractures of all wells in the area are analyzed by the templates. The results show that the distribution of the fractures is consistent with the oil-water well history in the area. The application of the technique to the flood well and well pattern greatly improve the development effect.