基于灰相关法的井间连通性评价研究

Research and Interpretation of Inter-Well Connectivity Dynamic Using Grey Correlation Degree

井间动态连通性反映了流体在井间的流动能力好坏,是油(气)藏工程评价的重要参数。从渗流力学的角度出发,结合灰色理论,推导和验证了灰色关联度计算井间连通性的可行性;采用渤海油田某油藏的生产动态资料,使用灰色关联度方法,计算了注、采井间动态数据的相关性,通过它们的相关性大小定量评判了井间连通程度的强弱和水驱油效果的好坏。结果表明:灰色关联度能有效评价井间连通性,并对水驱效果评价工作具有重要的参考价值。

The dynamic connectivity between wells reflects good or poor of the flowing capacity of fluid,which is the important parameter for engineering interpretation of oil or gas reservoir. From the perspective of percolation mechanics and combining the theory of grey,the feasibility to calculate the degree of inter-well connectivity by the grey correlation is deduced and verified. Using the dynamic production data in Bohai oil field,the dynamic data correlation between injection and production wells are calculated by grey relational method,and by their correlation size,connected degree between the wells and oil displacement effect of water on the strength of the good or bad are evaluated quantitatively. The results show that grey relational degree can evaluate inter-well dynamic connectivity effectively and has an important reference sense for evaluation work of water flooding effect.