System for accurately measuring choke position

Details System for accurately measuring choke position System for accurately measuring choke position

2006-04-11

2006-04-11

Chambers, A. Michael (Department: 3753)

Fluid handling

With indicator, register, recorder, alarm or inspection means

Position or extent of motion indicator

C116S069000, C116S069000, C116S250000

Reexamination Certificate

active

07025089

ABSTRACT:
The system for accurately measuring choke position includes a choke position indicator; a choke adapted to control the flow of high pressure fluids during completion or drilling of a well, wherein the distance between the choke's gate to the choke's seat determines the amount of high pressure fluids that pass through the choke; a magnet mounted on the actuator shaft; a magneto/hall device mounted to the stationary housing for sensing the location of the magnet as the choke actuator shaft moves and providing an analog signal; a power wire connecting the magneto/hall device to a power source; a ground wire to ground the magneto/hall device; a signal wire to transmit the analog signal; an analog-to-digital converter for receiving and converting the analog signal to a digital signal; and a processor for converting the digital signal into choke shaft positions and transmitting the choke shaft positions to the choke position indicator.

REFERENCES:
patent: 3964553 (1976-06-01), Basham et al.
patent: 4337653 (1982-07-01), Chauffe
patent: 4499955 (1985-02-01), Campbell et al.
patent: 4766764 (1988-08-01), Trevillion
patent: 5008664 (1991-04-01), More et al.
patent: 6588505 (2003-07-01), Beck et al.
patent: 6782949 (2004-08-01), Cove et al.

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