关键词: 低渗透油藏, 裂缝性, 精细识别, 窜流通道, 主客观组合赋权法

Abstract: At present, for the low permeability fractured reservoir has not formed a perfect identification method of channeling channels, the application of the evaluation index system does not conform to the actual field, the identification method has strong limitations, there are some problems such as big error in the result of recognition at small level. In order to solve these problems, the evaluation system is constructed by deepening the characteristics, mechanism and performance of interporosity flow in low permeability fractured reservoirs, and introducing the corresponding relationship of sand body and permeability of single well and small layer, the model of channeling channel identification is established by using the method of Modulus and objective mathematical analysis and subjective and objective combination weighting. The results show that the evaluation system and the recognition result are more in line with the actual situation of the mine because of the analysis of the pressure⁃sensitive effect, the effect of starting pressure gradient and the introduction of the corresponding relation of sand body for the first time, one channeling channel has not been identified, and the identified result is basically consistent with the field practice, which proves the accuracy of the established method and can provide technical support for the development and adjustment of low permeability fractured reservoirs.

Key words: Low permeability reservoir, Fracture； Fine identification, Channeling channel, Subjective and objective combination weighting method