基于PIPESIM的海外油田站外集输系统管径优选

Overseas Oilfield Surface Facility System Pipe Diameter Optimization Based on PIPESIM

油田站外集输系统将分散在油田各处的油井产物加以收集,以便进入联合站集中处理。集输管网覆盖面积大、投资占比高,对其进行管径优化设计对提高整个油田地面工程的经济效益至关重要。需充分利用井口流体的压力能和热能,合理布站,从而降低集输能耗和管网投资。站外集输系统模拟主要包括水力计算和热力计算,本文利用PIPESIM软件对海外某油田站外集输系统进行稳态模拟,完成单井和集输管线管径优选、井口背压校核、进集中处理站的温度计算等。本文工作对其他原油站外集输系统的管径优化具有一定的指导意义。

Production wellhead fluid is collected by field surface facility, followed by flowing to the united station for treatment. The pipe network of gathering wellhead fluid could cover a large area, and its investment is huge, so the pipe diameter design optimization is critical to improve economic benefits of the entire oilfield surface project. It should take full advantage of the pressure energy and the thermal energy of wellhead fluid and thus set station rationally to reduce both the energy consumption and the construction investment of pipe network. Field surface facility system simulation mainly includes hydraulic computation and thermal calculations. In this paper, we use PIPESIM software for steady-state simulation, and perform the diameter selection of single well flowline and collection trunkline, wellhead back pressure check, temperature calculation of entering central processing facility, etc. This would provide guidance for the diameter optimization of other oilfield surface facility system.