特高含水期油气水混输管道压降计算方法研究

在油田开发后期,产出液的含水率已超过80％,集输管道内介质的流动属于特高含水油气水混合流动。准确的油气水混输管道压降计算,对油田集输系统运行管理有着重要的意义。利用井口到计量间的现有设施,对特高含水期油气水管道的液量、气量、含水率、温度及压降进行了测试。介绍了Baker冲击流压降计算模型,用实测数据对Baker模型进行了修正。计算与测试数据对比分析结果表明,所给的修正压降模型适合特高含水采油期油气水三相冲击流水平管道压降计算。

RESEARCH ON PRESSURE DROP CALCULATION METHOD FOR OIL-GAS-WATER IN HORIZONTAL PIPELINE WITH SUPPER HIGH-WATER-CUT

With the deeply exploitation of oil field, majority of oil field have entered high water-cut developing bear stage. The water-cut of most oil wells exceeds by 80%. The flow in gathering and transferring pipeline belongs to mixed flow of oil-gas-water with super high water-cut. Calculating pressure drop exactly is significant for the operation and management of oil-gas gathering and transferring system. Making use of the devices ion well and measuring space, the pressure drop fluid pattern, the fluid flux, gas flux, water-cut, temperature, and pressure drop are tested, in horizontal pipelines in oil fields. Baker pressure drop calculating model of slug flow is introduced. Basing on the testing data, correct Baker model, and calculating results are contrasted and analyzed with testing data. It is concluded that the modified model is fit for the slug flow pressure drop calculating of oil-gas-water three-phase horizontal pipeline with super high water-cut.