吴起油田周长油区10-25井区沉积微相精细研究

Fine Study on Sedimentary Microfacies in the 10-25 Well Area of Zhouchang Oilfield in Wuqi Oilfield

周长油区储层类型为低渗低压的砂岩,油藏天然能量的不足以及生产油井的低产能、高递减率且稳产困难,都制约着工区的开发。由于当下对工区油藏的认识还不够精细,尚无法满足区块油藏开发的全部需要,当务之急是要在对研究区主力油层组的认识基础上展开油藏的精细描述。本文在此基础上,精细研究工区沉积微相特征,重点研究了其类型与划分,以及分布规律。

The reservoir type in the peripheral oil region is low permeability and low pressure sandstone,with insufficient natural energy in the reservoir,low production capacity of production wells,rapid decline,and difficulty in stabilizing production.At present,the understanding of the oil reservoirs in this area still cannot meet the needs of development,and the research area urgently needs to carry out reservoir description work for the main oil layer groups.On this basis,this article conducts a detailed study of the sedimentary microfacies characteristics in the work area,focusing on their types,divisions,and distribution patterns.