摘要
南海东部地区裂缝性油藏内部发育众多复杂裂缝及孔洞,采用过饱和充填是控制底水突进的有效手段。为更好地提升过饱和充填工艺应用效果,促进油田现场整体控水增油开发,该文以某水平井为例,根据裂缝性油藏微粒充填机理,结合室内充填实验和数值模拟分析,形成了裂缝开启压力判断方法,得到了裂缝充填压力门槛预测方法。该井在现场实施后,微粒充填率达到245%左右,充填最高压力9.2 MPa,初期产油量超过配产40%以上,含水率下降超过45%以上,效果显著。微粒过饱和充填工艺的优化,为该类型油藏的高效开发提供了清晰的思路,具有较高的参考价值。
Fractured reservoirs in the eastern South China Sea contain numerous complex fractures and cavities.Supersaturated packing is an effective method to control bottom water breakthrough.To better enhance the effectiveness of supersaturated packing technology and improve overall water control and oil production in field development,this study takes a horizontal well as an example.Based on the particle packing mechanism of fractured reservoirs and combined with laboratory packing experiments and numerical simulation analysis,a method for determining fracture opening pressure was established,and a predictive method for the fracture packing pressure threshold was derived.After implementation on the field site,the particle packing rate reached approximately 245%,with a maximum packing pressure of 9.2 MPa.The initial oil production exceeded the allocated production by over 40%,and the water cut decreased by more than 45%,demonstrating significant results.The optimization of the supersaturated packing process provides a clear idea for the efficient development of this type of reservoirs and holds substantial reference value.
作者
邓晗
刘传刚
孟召兰
王尧
张纪双
张春升
DENG Han;LIU Chuangang;MENG Zhaolan;WANG Yao;ZHANG Jishuang;ZHANG Chunsheng(CNOOC EnerTech-Drilling&Production Co.,Tianjin 300452,China;CNOOC EnerTech-Key Laboratory of Offshore Well Completion.,Tianjin 300452,China)
出处
《海洋石油》
2025年第4期28-32,共5页
Offshore Oil
基金
中国海洋石油集团公司“十四五”重大科技项目“海上油田钻完修井关键工具研发与应用”(KJGG-2022-1403)。
关键词
裂缝性油藏
过饱和充填
参数设计
裂缝开启压力
应用效果
fractured reservoir
supersaturated packing
parameter design
fracture opening pressure
application effect
