胜利油田稠油油藏水平井技术经济政策界限

Technical and Economic Limits for Horizontal Well Development of Heavy Oil Reservoir in Shengli Oil Field

稠油油藏水平井开发效果,既受油藏条件又受水平井设计参数的影响;其设计与应用更受油价的制约。因此,通过胜利油田实际资料统计分析、数值模拟和解析法以及经济评价综合研究,提出了当前油价和技术条件下,此类油藏水平井地质设计的经济技术政策界限:油藏埋藏深度在1500m以内,50℃脱气原油粘度低于30000mPa·s,油层厚度大于3m,水平井段长度小于300m,纵向上距油层顶2/3处。

The result of horizontal well development of heavy oil reservoir is not only influenced by the conditions of reservoir and the design parameters of horizontal well, but also restricted by present oil price. This paper presents the statistical analysis of the field data from Shengli oil field, numerical simulation and economic evaluation, and then proposes the technical and economic limits for the horizontal well design in such a reservoir in condition of present oil price and technological level： the buried depth of reservoir is less than 1 500 meters; the degassed crude viscosity at 50℃ is lower than 30 000 mPa.s; the pay zone thickness is greater than 3 meters; the length of horizontal section is less than 300 meters; the vertical position apart from the top of pay zone is determined by 2/3.