Method and system for controlling a mechanical pump to monitor and optimize both reservoir and equipment performance

Patent · Tue Nov 12 04:00:00 EST 1991

OSTI ID:5788357

Walker, F J; Walker, Jr, F J

This patent describes a system for preventing damage resultant from pump-off of a well pump for pumping an essentially incompressible fluid mixture made up of a substantially homogeneous mingling of solids, liquids and gases, the liquids constituting the major portion of the mixture, the relative proportions of the solids, liquids and gases being subject to change over time, from a well casing replenished by the fluid mixture from a surrounding earth formation, a flow-rate sensor for measuring in real time the volumetric flow-rate of the fluid mixture. It includes housing means having an internal fluid passageway, and inlet and outlet ports, the passageway for directing the fluid mixture between the inlet and outlet ports; a backpressure valve means in fluid communication with the passageway for maintaining a wellhead discharge pressure at or above the highest bottom hole pressure that will act upon the downhole inlet of the well pump at any time during a regular pump operating cycle as the mixture passes through the passageway; a barrier wall defined within the passageway, the wall including a fixed area orifice through which all of the mixture passes from the inlet port to the outlet port.

• Assignee: NOV; NOV-92-011053; EDB-92-038018
• Patent Number(s): A; US 5063775
• Application Number: PPN: US 7-901692
• OSTI ID: 5788357
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020200* -- Petroleum-- Reserves
Geology
& Exploration
020300 -- Petroleum-- Drilling & Production
CONTROL EQUIPMENT
CONTROL SYSTEMS
DISPERSIONS
DRILLING
EQUIPMENT
FLOW REGULATORS
FLOWMETERS
FLUID FLOW
FLUIDS
INCOMPRESSIBLE FLOW
MEASURING INSTRUMENTS
METERS
MIXTURES
OIL WELLS
OPTIMIZATION
PUMPS
TRANSDUCERS
VELOCITY
WELL DRILLING
WELLS