番禺4-2DPPA原油集输与处理系统研究
发布时间：2019-06-27 20:45
【摘要】：根据番禺油田后续开发需要,番禺油田在原番禺4-2WHP平台和番禺5-1WHP平台东南侧各新建一套新的生产设施。由于新开发区域稠油含量较高,故新平台集输工艺系统设计重点是原油安全外输,同时还要保持外排含油污水达标,外输海管安全可靠输送原油等目的。海洋石油平台是海上油田开发生产集输系统的核心,主要作用是进行油气水初步分离。论文围绕原油处理、含油污水处理和海管外输三个方面展开,在原油和含油污水处理系统设计中,使用较为可靠的API及ASME标准做为理论初算依据,利用HYSYS软件对原油和含油污水处理工艺进行处理能力和操作参数的模拟计算；参照已投产的番禺4-2WHP平台运行参数,综合考虑番禺4-2DPPA平台外输原油物性参数、外输压力、FPSO入口压力、新老海管三通汇合处入口压力、海管油品温度、流量等因素,设计研究了番禺4-2DPPA平台原油的外输海管工艺；考虑到新投产平台采出液粘度和含蜡量较高,采用Pipesim软件,模拟研究了番禺4-2DPPA平台海管的最低输量,同时探讨了海管投产预热与停输预热、平台关闭对海管水力与热力的影响、海管允许停输时间、海管置换及主要操作参数的敏感性。研究结果表明,正常工况下原油经二级处理后含水率可达到15%以下,含油污水经过水力旋流和气浮以后可达到含油量小于20 mg/L,原油和含油污水处理结果满足番禺4-2DPPA初始设计要求；在二级分离的含水原油增压、加热至98℃再经电脱水器脱水后,含水量可小于0.5%；；番禺4-2DPPA平台在200 m3/d的最低输量下,番禺4-2WHP与番禺4-2DPPA平台外输流量必须大于510 m3/d(含水率15%)才能保证混合原油顺利流入下游FPSO;外输海管停输最低温度为40℃,允许停输时间为2 h,流量比温度与原油粘度对海管压力的影响更敏感,这不仅为番禺油田的油藏调整及二次开发生产方案设计与生产运行流动安全保障提供了理论参考,而且对其它类似的海洋油气田集输规划设计具有示范作用。
[Abstract]:According to the needs of the subsequent development of Panyu Oilfield, Panyu Oilfield has built a new set of production facilities on the southeast side of the former Panyu 4-2WHP platform and Panyu 5-1WHP platform. Because of the high content of heavy oil in the new development area, the design focus of the new platform gathering and transportation process system is the safe external transportation of crude oil, at the same time, it is necessary to keep the oily wastewater discharged from the outer oil up to the standard, and the outer sea pipe to transport crude oil safely and reliably. Offshore oil platform is the core of offshore oil field development and production gathering and transportation system, and its main function is to separate oil, gas and water. This paper focuses on three aspects: crude oil treatment, oily wastewater treatment and marine pipeline transportation. In the design of crude oil and oily wastewater treatment system, the reliable API and ASME standards are used as the theoretical preliminary calculation basis, and HYSYS software is used to simulate the treatment capacity and operation parameters of crude oil and oily wastewater treatment process. According to the operation parameters of Panyu 4-2WHP platform, the external crude oil transportation technology of Panyu 4-2DPPA platform is designed and studied by considering the physical parameters of Panyu 4-2DPPA platform, the external transportation pressure, the FPSO inlet pressure, the inlet pressure at the junction of the new and old sea management channels, the oil product temperature, the flow rate and so on. Considering the high viscosity and wax content of produced liquid on the newly put into operation platform, the minimum transportation capacity of sea pipe on Panyu 4-2DPPA platform is simulated and studied by using Pipesim software. At the same time, the effects of preheating and shutdown preheating and platform closure on the hydraulic and thermal power of sea pipe, the allowable shutdown time of sea pipe, the replacement of sea pipe and the sensitivity of main operating parameters are discussed. The results show that the moisture content of crude oil can reach less than 15% after secondary treatment under normal working conditions, and the treatment results of oily sewage with oil content less than 20 mg/L, crude oil and oily wastewater can meet the initial design requirements of Panyu 4-2DPPA after hydrocyclone and air floatation, and the water content can be less than 0.5% after heating to 98 鈩，
本文编号：2507135
[Abstract]:According to the needs of the subsequent development of Panyu Oilfield, Panyu Oilfield has built a new set of production facilities on the southeast side of the former Panyu 4-2WHP platform and Panyu 5-1WHP platform. Because of the high content of heavy oil in the new development area, the design focus of the new platform gathering and transportation process system is the safe external transportation of crude oil, at the same time, it is necessary to keep the oily wastewater discharged from the outer oil up to the standard, and the outer sea pipe to transport crude oil safely and reliably. Offshore oil platform is the core of offshore oil field development and production gathering and transportation system, and its main function is to separate oil, gas and water. This paper focuses on three aspects: crude oil treatment, oily wastewater treatment and marine pipeline transportation. In the design of crude oil and oily wastewater treatment system, the reliable API and ASME standards are used as the theoretical preliminary calculation basis, and HYSYS software is used to simulate the treatment capacity and operation parameters of crude oil and oily wastewater treatment process. According to the operation parameters of Panyu 4-2WHP platform, the external crude oil transportation technology of Panyu 4-2DPPA platform is designed and studied by considering the physical parameters of Panyu 4-2DPPA platform, the external transportation pressure, the FPSO inlet pressure, the inlet pressure at the junction of the new and old sea management channels, the oil product temperature, the flow rate and so on. Considering the high viscosity and wax content of produced liquid on the newly put into operation platform, the minimum transportation capacity of sea pipe on Panyu 4-2DPPA platform is simulated and studied by using Pipesim software. At the same time, the effects of preheating and shutdown preheating and platform closure on the hydraulic and thermal power of sea pipe, the allowable shutdown time of sea pipe, the replacement of sea pipe and the sensitivity of main operating parameters are discussed. The results show that the moisture content of crude oil can reach less than 15% after secondary treatment under normal working conditions, and the treatment results of oily sewage with oil content less than 20 mg/L, crude oil and oily wastewater can meet the initial design requirements of Panyu 4-2DPPA after hydrocyclone and air floatation, and the water content can be less than 0.5% after heating to 98 鈩，
本文编号：2507135
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