柳赞油田多层砂岩优势渗流通道特征及喉道体积

doi:10.7657/XJPG20240107

摘要/Abstract

摘要：

陆相油藏储集层非均质性强，长期注水开发容易形成优势渗流通道，导致油井快速水淹，驱油效率降低，开发效果变差。以柳赞油田古近系渐新统沙河街组为例，综合分析测井岩电响应、储集层非均质性、注采特征、储集层孔隙特征等，描述柳赞油田多层砂岩优势渗流通道特征，确定了该区优势渗流通道形成条件，通过建立优势渗流通道喉道体积的计算方法，明确了油藏下一步调驱剂用量，达到了有效封堵优势渗流通道的目的，研究成果可为油田下一步稳油控水提供技术支撑。

关键词: 柳赞油田, 沙河街组, 砂岩, 优势渗流通道, 孔隙特征, 孔喉半径, 喉道体积, 稳油控水

Abstract:

For continental reservoirs with strong heterogeneity，long-term water injection may create dominant flowing channels，which will cause rapid water breakthrough in oil wells，thereby reducing the displacement efficiency and resulting in poor development results. Taking the Paleogene Oligocene Shahejie formation of Liuzan oilfield as an example，the litho-electric logging responses，reservoir heterogeneity，injection-production performance，and reservoir pore characteristics were analyzed，the characteristics of dominant flowing channels in the multi-layer sandstone reservoirs of the oilfield were described，and the conditions for the formation of dominant flowing channels in this area were determined. A calculation method for the throat volume of dominant flowing channels was established. With this method，the amount of profile control agent used in the subsequent operations was clarified to effectively plug the channels. The research results provide a technical support for subsequent oil production stabilization and water control in oilfields.

Key words: Liuzan oilfield, Shahejie formation, sandstone, dominant flowing channel, pore characteristic, pore throat radius, throat volume, oil stabilization and water control

中图分类号:

TE357

曹同锋, 高东华, 李占东, 王天杨, 姜峰. 柳赞油田多层砂岩优势渗流通道特征及喉道体积[J]. 新疆石油地质, 2024, 45(1): 53-57.

CAO Tongfeng, GAO Donghua, LI Zhandong, WANG Tianyang, JIANG Feng. Characteristics of Dominant Flowing Channels and Throat Volume of Multi-Layer Sandstone Reservoirs in Liuzan Oilfield[J]. Xinjiang Petroleum Geology, 2024, 45(1): 53-57.

图/表 4

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