Bellows control devices for borehole supercritical extraction processes

This paper discusses a pressure control and monitoring system to improve the reliability of borehole extraction processes. Borehole extraction processes can improve the quality of high-viscosity oil stimulation and can also be used in biofuel production processes by providing the necessary performance. This pressure control system is based on a bellows-type device capable of withstanding high pressures. The presented device has a number of advantages compared with counterparts: the possibility of pressure control, reducing the risk of water hammer, increasing reliability. When using a bellows device in downhole extraction processes, there is a problem of changing operating parameters with changing depth of diving. In this regard, a model was developed and the dependence of pressure changes inside the bellows device depending on the depth of the well was plotted, which will allow designing and regulating the device at various stages.