Weatherford Technology Holdings, LLC

Michael C Knoeller

Clark E Robison

Manish Agarwal

Jeffrey John Lembcke

Bryan A Paulet

William C Lane

Thomas Scott Campbell

Toby S Pugh

John Kelleher

Jason W Mathews

Gabriel Lugo

Jeff Lembcke

Jeffrey J Lembcke

An artificial lift system has a surface pump operated by a prime mover powered by a variable speed drive. A jet pump disposed downhole in tubing receives pressurized power fluid from the surface pump, mixes the power and production fluid and delivers the product uphole. A controller disposed at surface adjusts the artificial lift system relative to a set value based on a measured discharged pressure or a measured flowrate and trends a change in the other of the measured flowrate or the measured discharged pressure over time. The controller can also trend an operating condition (intake pressure vs. production rate) to determine changes relative to cavitation conditions. Based on the trended changes, the controller initiates an operation in the artificial lift system, such as adjusting the discharge pressure, initiating an alarm condition, etc.

Jet pump controller with downhole prediction

A wellbore completion is configured for multiple forms of artificial lift. A downhole assembly on production tubing defines a production port communicating a throughbore with the wellbore annulus. A bypass, such as a snorkel or riser tube, on the assembly also communicates the throughbore between the packer and the production port with the annulus. A packer on the assembly seals in the annulus downhole of the production port and bypass. The assembly can then be configured for any selected artificial lift. To do this, at least one isolation (a sleeve insert, a sliding sleeve, a check valve, or a rupture disk) selectively prevents/allows communication via one or both of the production port and the bypass as needed. Additionally, removable lift equipment, including jet pump, gas lift valve, plunger assembly, rod pump, piston pump, or standing valve, is selectively inserted into the assembly's throughbore as needed.

Bottom hole assembly for configuring between artificial lift systems

Embodiments of the present disclosure generally relate to a hydraulic pump with gas lock prevention. The pump includes a pump barrel having an intake port and a discharge port and a pump piston movably disposed in the pump barrel. The pump piston divides an inner volume of the pump barrel into a first pump volume connected to the discharge port and a second pump volume connected to the intake port. A pump flow path is formed through the pump piston connecting the first pump volume and the second pump volume. The pump further includes a first valve disposed in the pump flow path in the pump piston. The first valve selectively permits fluid flow from the second pump volume to the first pump volume. The pump further includes a second valve disposed at the discharge port to selectively permit fluid flow out of the first pump volume through the discharge port.

Hydraulically actuated downhole pump with traveling valve

An apparatus can include a jet pump with a nozzle and a throat, a flow passage for conducting production fluid to the throat, and a check valve that prevents flow from the throat to the flow passage and permits flow from the flow passage to the throat. A method can include performing a bottomhole well pressure test while measuring well pressure with a well parameter sensor connected to a jet pump, and then retrieving the well parameter sensor and the jet pump together from the well. A system can include a jet pump sealingly received in a tubular string, the jet pump including a throat that receives a power fluid from a nozzle and receives a production fluid from a flow passage, and a check valve permitting flow of the production fluid from the flow passage to the throat and preventing flow of the power fluid to the flow passage.

Well testing with jet pump

A valve assembly includes a valve body having a first port and a second port, the first port forms a fluid pathway from a first surface of the valve body to a second surface of the valve body, and the second port forms a fluid pathway from the second surface of the valve body to a third surface of the valve body. The valve assembly also includes a first plate having a first blocking member, the first blocking member configured to block the first port at the first surface of the valve body when the first plate is in a first closed position. The valve assembly also includes a second plate having a second blocking member, the second blocking member configured to block the second port at the second surface of the valve body when the second plate is in a second closed position.

Valve for a downhole pump

Embodiments of the present disclosure generally provide a disc-valve design with a self-cleaning feature. The self-cleaning feature may be integrated into the valve, for example, by removing a 'cut-out' portion between sealing surfaces of ports. These cut-out portions may create vortices that might clean debris from the sealing surfaces. The cut-outs may also provide a place for debris to collect-keeping it away from the sealing surfaces. In addition, or as an alternative to cut-outs, some other type of mechanism, such as sealing members designed to disturb flow to sweep away debris near a sealing surface or helical grooves (rifling) formed in the ports, may also be used to promote self-cleaning.

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Humble, TX, United States of America

Michael C Knoeller