Preventing gas locking in sucker rod pumps using an actuated traveling solenoid valve – onepetro electricity cost las vegas


Gas locking has been a problem accompanying the ball and seat Sucker Rod Pump ever since its inception in the oil industry. A gas lock occurs when, contrary to the normal functioning of an SRP, due to a gas influx from the standing valve, the pressure exerted by the fluid below the traveling valve in the closed chamber does not overcome the weight of liquid column lying above the traveling valve in the pump barrel. electricity in the body symptoms This fails to lift the ball off the seat.

This paper brings forth the design of a Sucker Rod Pump consisting of a solenoid actuated hydraulic valve in the traveling plunger seat to address this failure. The traveling section contains a hydraulic valve in the plunger seat in conjugation with a solenoid actuator at the surface for executing an open or close mode. The electric supply for the valve is provided through a wire conduit in the polish rod connected to a control system installed at the surface. A sensor is placed to sense the event of beginning of each, up as well as down, stroke of the plunger. Based on this trigger, at the beginning of every down stroke, the solenoid is set on to provide power for the valve to open. electricity youtube billy elliot This external drive for the valve opening compensates for the negative variation in magnitude of the fluid pressure differential between the traveling and standing sections, thus enabling fluid intake into the pump barrel. When the end of the stroke is sensed, the hydraulic valve piston is seated back for the valve to close. This enables the lifting of the fluid in the pump barrel during the upstroke.

This design aims at latency free synchronization of the valve opening and closing with pump reciprocation under circumstances of gas interference. a gaseous mixture contains From first principle, this mechanism of voluntarily open the traveling valve during the downward motion would prevent the problem of gas lock. This would also increase the efficiency by eliminating non producing compression strokes which are also a cause for pump breakdown.

On drilling and completion, initially most wells flow under naturally occurring pressures, but over a period of time, depletion of formation pressures leads to either ceasing of flow or decline to a point that is uneconomical. gas vs electric stove cost Artificial lifts are designed as a substitute to reservoir energy and a majority of artificial lift wells are being produced by sucker rod pumping. Its downhole assembly comprises of a standing and two traveling valves. During the downstroke, fluid moves up through the open traveling valve, while the weight of the fluid column in the chamber is supported by the standing valve, which is consequently closed. Upon upstroke, the traveling valve is closed and the standing valve opens. As the fluid column is lifted, the pump chamber is evacuated, permitting the inflow of new fluid from the formation into the well tubing for subsequent production during the next stroke. A known basic cause of low efficiency in Sucker Rod Pumps is the presence of free gas in pumped fluid. A number of techniques have been devised over the years that work on the principle of prevention of gas influx into production tubing from multiphase reservoirs. electricity 220 volts wiring The methology of the system in this paper adopts the principle of curing gas occurrence in the pump by adapting to its presence and producing it through the tubing itself without volumetric efficiency loss or imposing loads that cause fatigue and failure.