【作者】 付林笙；

【导师】 曹广胜； 王明信；

【作者基本信息】 东北石油大学 ， 石油与天然气工程， 2010， 硕士

【摘要】 萨北油田开发建设经历了一次加密调整、二次加密调整、三次加密井建设,由于当时油井产液含水、温度较低,且原油的粘度高、凝点高、含蜡量高,地理位置处于严寒地区,给原油集输增加了困难。为了保证原油的正常集输,设计时采用了双管掺热水保温,热水洗井清蜡的常规掺水流程。随着萨北油田现进入高含水开发后期,油井采出液综合含水率已达到90%以上。采出液含水率的不断升高,油井产水量上升,集输系统耗气及耗电呈上升趋势,加之水的热容量比原油的热容量大,导致双管掺水集油工艺的能耗不断上升。同时由于采出液的水力特性和乳化特性等均发生变化,其掺水温度、掺水量等技术界限也发生变化,按照原有的集输技术界限运行的集油方式造成了大量能源的浪费。为了控制集输能耗,降低生产成本,对油井低温集输技术界限进行研究并应用于生产中是十分必要的本文试验研究了利用萨北油田高含水原油集输特性,开展了一系列室内试验及现场试验研究,在优化集输工艺,降低集输能耗方面取得了一定的成果,研究出一套从井口到计量间、转油站、联合站的低温油气集输油气集输工艺运行方式,并摸索出各系统在低温运行工况下的运行参数及界限,以及低温运行工况下各系统配套工艺技术,为今后油田大规模推广及新油田开发工艺规划设计提供技术参考。该项试验研究成果,有效降低了油田生产能耗的上升趋势。截至2009年底,萨北油田在运的近3000口油井中,全部实现夏季掺掺常温水,掺水炉全部停运。冬季掺低温水,掺水炉运行数量减少2/3左右,油气集输系统生产加热及处理温度大幅度降低,通过能耗的降低,取得了较好的经济效益和社会效益。更多还原

【Abstract】 North Saertu oilfield development construction experienced the first infilled adjustment, the second infilled adjustment and the third infilled adjustment. Since low contained water and low temperature of oil well production fluid , high viscosity, high freezing point and high contenting wax of crude oil, and the geographical position in cold region, it was more difficult in gathering and transporting crude oil at that time.In order to guarantee the normal gathering and transporting crude oil, we adopted the conventional blending process of double-tube mixing hot water thermal insulation and hot water washing well and clearing wax.As North Saertu oilfield Pizza have entered high water late development period now, oil production fluid comprehensive water content has reached more than 90%.The water content of production fluid is rising, the water production amount of oil well is rising, the gas and electricity consumption of gathering and transporting system is the increasing trend, and the heat capacity of water is higher than the heat capacity of crude oil. These cause that the energy consumption of double-tube blending and oiling process is increasing. At the same time, as the hydraulic characteristics and emulsion properties of production fluid changed, and its technology boundary, such as temperature and amount of water blending, changed too, it must cause a waste of energy if we run the mode of oil according to the original gathering and transporting technology boundary. In order to control the gathering and transporting energy consumption and reduce production cost, it is very necessary that we research low temperature gathering and transporting technology boundaries and applicat them in production.This paper studied the gathering and transporting characteristic of North Saertu oilfield high water crude oil, developed a series of indoor and field researches, made some achievements in optimizing gathering and transporting technology and reducing the energy consumption of gathering and transporting, got an operation mode of low temperature oil and gas gathering and transporting process from well-head to metering station , transfer station and joint station, and found the operation parameters and boundary for every system in the low temperature operation conditions and supporting technology for every system in the low temperature operation conditions. These can provides technical references for future large-scale promotion in oil field and for planning and designing in new oil field development process. The research results effectively reduce the production consumption rising trend of oilfield. By the end of 2009, there were about 3,000 operating oil Wells in North Saertu oilfield, and we realized that all oil Wells were blended the normal water and blending furnace were stopped in summer, and we realized that all oil Wells were blended the low temperature water and the amount of operating blending furnace reduced about two-thirds in winter. The heating and processing temperature of oil and gas gathering transporting system production decreased greatly. By energy consumption reduction, we have achieved good economic benefit and social benefit.更多还原