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Fluid interface moving for the concurrent production of gas cap and oil ring of gas cap reservoirs

机译：流体界面移动，用于同时生产气顶储层的气顶和油环

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The pressure balance between gas cap and oil ring is likely to be broken during their concurrent production in gas cap reservoirs. In order to increase the whole development efficiency of the concurrent production of gas cap and oil ring, the Zhanzhol gas cap reservoir of Kazakhstan was taken as example to carry out the research, a three-dimensional visualization physical model was established based on the similarity criterion of oil phase, gas phase and water phase, and a reservoir engineering model of fluid interface moving rate was also set up according to the material balance principle. The calculation results of reservoir engineering model tally with the results of physical simulation experiment and reservoir dynamic test data. The moving rate template of fluid interface under three development modes, depletion development, barrier water injection development and barrier plus pattern water injection development have been also established by reservoir engineering method. The main controlling factors under different development modes have been figured out: for depletion development, the main controlling factors on the stabilization of oil-gas contact are oil recovery rate and gas recovery rate; for barrier water injection development, the main controlling factors are oil recovery rate, gas recovery rate and production-injection ratio; and for barrier plus pattern water injection development, the main controlling factors are oil recovery rate, gas recovery rate, production-injection ratio and the ratio of barrier water injection to pattern water injection.
机译：在气顶储层中同时生产时，气顶和油环之间的压力平衡可能会破裂。为了提高气顶与油环同时生产的整体开发效率，以哈萨克斯坦的Zhanzhol气顶油藏为例进行了研究，基于相似性准则建立了三维可视化物理模型。根据物料平衡原理，建立了油相，气相和水相的理论模型，并建立了流体界面运动速率的油藏工程模型。油藏工程模型的计算结果与物理模拟实验和油藏动态试验数据相符。通过油藏工程方法，建立了三种开发模式下的流体界面运动速率模板，分别为耗竭开发，屏障注水开发和屏障加模式注水开发。指出了不同开发方式下的主要控制因素：枯竭开发中，油气接触稳定的主要控制因素为采收率和采收率;对于屏障注水开发，主要控制因素是油采收率，瓦斯采收率和产喷比。对于阻隔加模式注水开发，主要控制因素是油采收率，气采率，注采比和阻隔注水与模式注水之比。

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