National Key Laboratory of Offshore Oil and gas Exploitation
Offshore oil reservoirs are characterized by loose and heterogeneous strata, high injection-production intensity, and easy water breakthrough along advantageous permeability channels, which can significantly affect development efficiency. In this study, the oil reservoir extraction process to an interconnected network of injection are simplified and production wells and developed a novel quantitative identification model for advantageous channels based on inter-well connectivity units. By coupling with a dynamic automatic history matching algorithm,the characteristic parameters of advantageous channels can be obtained directly, accurately and rapidly. Furthermore,a comprehensive evaluation factor of cross-flow intensity were introduced to provide a new method for the classification and characterization of heterogeneous offshore oil reservoirs. Field applications are demonstrated that large channels and advantageous channels can be quickly and accurately identified and predicted , including the vertical development layers, the planar development directions, and the development intensities. Timely guidance for targeted management of low-efficiency channels and sustained high-efficiency development are provided by this method in oil fields.
未志杰,王德强,刘玉洋,等. 海上非均质油藏优势通道识别新方法及应用[J]. 科学技术与工程, , ():复制