海上稠油开采注采一体水力潜油泵设计及耐高温轴承研制

由于稠油黏度高、密度大、流动性差等特点,通常采用蒸汽吞吐或蒸汽驱2种方式开采,其作用原理是将高温(350 ℃)高压(21 MPa)蒸汽注入稠油层,使油层温度上升、黏度下降,流动性增加,便于开采。为降低海上平台作业成本,并满足在高温注热蒸汽环境下不提出泵的要求,设计了新型的注采一体用水力潜油泵,并对其整体装置、轴承等重要部件进行了设计计算、模拟及试验,研制出满足该泵使用寿命达到2 a的止推轴承。满足了稠油注采一体工艺的要求。

Design of Injection Production Integrated Hydraulic Submersible Pump for Offshore Heavy Oil Recovery and Development of High Temperature Bearing

Due to the high viscosity, high density, and poor fluidity of heavy oil, steam huff or steam flooding are generally used. Its working principle is to inject high temperature(350 ℃)and high pressure(21 MPa)steam into the heavy oil reservoir, so that the temperature of the reservoir rises, the viscosity decreases, and the fluidity increases, which is convenient for production. In order to reduce the operation cost of the offshore platform, a new type of hydraulic submersible pump for injection production integration was designed according to the requirements of environment and technology, aiming at the requirement that the pump can not be put forward in the environment of high-temperature steam injection. The relevant design calculation, simulation, and experiment were carried out for the integral device, bearing, and other important parts. The results show that the pump can meet the requirements of injection production integration, the service life of the thrust bearing can reach two years.