天然气与石油2024，Vol.42Issue(2)：68-74,7.DOI:10.3969/j.issn.1006-5539.2024.02.010
裂缝性礁灰岩强底水油藏控水对策研究
Research on water control strategies for fractured reef limestone reservoirs with strong bottom water
摘要
Abstract
The fractured bottom water reef limestone reservoir is characterized by a well-developed fracture network and a large bottom aquifer.The heterogeneity of the fracture network and the diversity of fracture occurrences complicate water coning in production wells,necessitating adaptive water control technologies.This study uses the Liuhua 11-1 oilfield as a case study,where the reservoir's microscopic porous structure was categorized into four types based on core descriptions,rock core SEM,and cast rock thin sections.Numerical simulation models were developed to investigate the water coning characteristics of different reservoir types,and various water control methods were evaluated.The results show that distinct water coning behaviors across different reservoir types.Tight-fractured and cave-fractured reservoirs are prone to rapid water coning,leading to early water breakthrough,quick increases in water cut,and swift declines in oil production.Upon assessing the adaptability and effectiveness of existing water control measures,the"continuous packer+Inflow Control Device(ICD)"approach was found to be efficacious.This method not only fills the fractures but also reduces the flow rate in high-productivity sections to achieve water control balance.This research is of great significance for the efficient development of fractured bottom water reservoir,and provides reference for the water coning and water control method of this type of oilfield.关键词
礁灰岩/储层分类/水锥规律/控水措施Key words
Reef limestone/Reservoir classification/Water coning performance/Water control strategies引用本文复制引用
杨勇,李芳芳,孙常伟,程佳,刘远志,江任开..裂缝性礁灰岩强底水油藏控水对策研究[J].天然气与石油,2024,42(2):68-74,7.基金项目
中国海洋石油集团有限公司重大科技专项"南海东部油田上产2000万吨关键技术研究"(CNOOC-KJ135ZDXM37SZ) （CNOOC-KJ135ZDXM37SZ）
