河流相储集层砂体构型试井响应图版

Well Test Response Charts of Sand Body Configuration in Fluvial Facies Reservoirs

储集层构型研究是储集层精细描述的核心,可实现储集层非均质性精细表征。在河流相储集层砂体构型研究的基础上,对河流相不同类型沉积砂体叠置形成的渗流阻力区搭建数值试井模型,建立相应的试井响应图版,并以此确定各类沉积的储集层连通能力。通过对砂体叠置模式试井分析,明确不同叠置厚度以及不同砂体部位的试井响应特征,结合渤海某油田测试井实例,验证了基于地震、测井、沉积等研究的地质构型成果,为河流相储集层的地质模式研究和井位部署提供依据。

Reservoir configuration study is the core of fine reservoir description and then fine characterization of reservoir heterogeneitycan be realized. Based on the study of sand body configuration in fluvial reservoirs, numerical well test models are built for percolation re-sistance areas resulted from the superimposition of different sedimentary sand bodies of fluvial facies and the corresponding well test re-sponse charts are established. Based on which the reservoir connectivities of various sediments are determined. Through the well test analy-sis on sand body superimposition modes, the response characteristics of sand bodies are determined for different thickness and different po-sitions. A case study in a certain oilfield of Bohai Bay has verified the geological configuration results by combining the studies of seismic,logging and sedimentation, which can provide basis for geological pattern study and well allocation in fluvial reservoirs.