How to recirculate Saline Reservoir Water into the Ground?
In oil fields, a mixture of oil and water or crude oil and sand is extracted from the ground. The oil is separated. After separation of the oil content, the salt water contaminated with aggressive particles is pressed into the soil through small, vastly branched injection wells at the edge of an oil field. This increases the pressure on the oil-bearing strata and the mixture of oil, solid particles and water is delivered at the drilling site.
Some oil production plants in Sudan have installed pilot-operated backpressure regulators. The range of application of such industrial valves requires very high corrosion resistance. Therefore they are mostly made completely of Duplex steel (1.4462) and thus designed for temperatures from -10 through to +100 °C.
100 m3/h flow rate is a common maximum pump capacity. At this pump capacity and zero extraction rate, the maximum delivery pressure is 83 bar at up to 95 °C, so that the nominal pressure of a back pressure regulator must be designed for PN 160. The valve is located directly downstream of a strainer in the course of the injection line. The valves have the task of building up a constant counter-pressure to the pumps and thus offer protection against damage caused by cavitation.
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Mankenberg Pilot-operated Control Valve RP820Eck
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