水平井蒸汽驱技术政策界限优化研究

Optimization on Technologic Policy Limitation of Steam Flooding in Horizontal Wells

以胜利油田稠油油藏的平均油藏地质参数为基础,采用数值模拟方法,建立不同类型油藏水平井井组概念模型,系统研究了不同类型稠油油藏水平井蒸汽驱开发的井网形式、合理井距、布井极限油层厚度、地面脱气极限原油黏度、井底蒸汽最低干度等技术政策界限,首次针对不同类型稠油油藏建立了一套完善的水平井蒸汽驱技术政策界限筛选标准,对稠油油藏水平井蒸汽驱各项关键技术参数选取具有较强的指导意义和借鉴作用。

Based on the average reservoir geological parameters of heavy oil reservoirs in Shengli Oilfield,a numerical simulation method was used to establish concept models for different horizontal well groups,analyzed systematically the development technologic policy limitation,such as type of well pattern,reasonable well spacing,limited oil layer thickness of well deployment,limit crude oil viscosity of surface degassed oil,and minimum quality of bottom-hole steam of horizontal well steam flooding in different types of heavy oil reservoirs.For the first time,for different types of heavy oil reservoirs a complete set of screening standards are established for technologic policy limitation on steam flooding in horizontal wells,it provides effective guidance and reference for selection of various key technical parameters for steam flooding of horizontal wells in heavy oil reservoir.