Development of Operational Control Systems of Filtration Flow Characteristics in Oil Wells

A review of literature is conducted on the methods and equipment for sampling in technical systems operating in complex working conditions with regard to power engineering, aviation, rocket and oil industries. The authors analyze the effectiveness of devices used for separating gas-condensate suspended flows that serve as the working fluid for power systems. Differentiated evaluation of the flow composition is performed, and composition of the inlet fluids from oil wells is analyzed. An experimental model of an auto-sampler for continuous sampling of the mixed (oil-water) or alternating (oil / water) flows is developed. Bench and field tests of the prototype model were performed in the continuous mode for three days. The results obtained were compared with the results of discrete sampling performed once a day. The data obtained through the continuous sampling showed higher values of oil content by 5%–9%, which experimentally justified the need to use the continuous sampling method. The concept of the basic sampling method and a device for measuring the composition of the continuously changing oil-water fluid at the wellhead is developed. The efficiency and future application of the concept is determined by the possibility of developing automated sampling systems for multilayer wells that could be used simultaneously in several layers. Such systems are characterized by high information capacity, simple construction and low cost.

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