Back to results
US 6,199,629 B1Granted
Computer controlled downhole safety valve system
AssigneeBaker Hughes Incorporated
InventorsSteve Shirk, Mike Rawson, Brian Shaw
Life of this patent
Estimating the term…
Abstract
A subsurface safety device positioning and monitoring system includes a controller and at least one downhole sensor that senses and records conditions of the well near the valve and of the valve itself. Conditions include temperature, pressure, flow rate, degree of closure of valve, structural condition of valve, water cut of produced fluids, etc.
Claims12
A subsurface safety valve position and monitoring system for a production well comprising:
- a downhole valve housing;
- a downhole valve housed in said valve housing;
- a controller for controlling said downhole valve;
- sensors proximate said valve to provide sensory information about the environmental conditions proximate to the valve and the condition of the valve, said sensors transmitting said information to said controller;
- and
- a pair of communications conduits running to said valve housing.
3 more elements
A subsurface safety valve in an oil well comprising:
- a downhole valve housing;
- a safety valve housed in said valve housing;
- and
- at least one sensor proximate said housing to sense at least one parameter of said valve said parameter being at least one of differential pressure across the valve, leakage across the valve, tension in at least one of the valve and housing, torque on at least one of the valve and housing, bending moment on the valve, contaminants in a produced fluid from the oil well, paraffin buildup on valve components of said safety valve, speed of movement of components of said safety valve, acceleration of components of said safety valve, and position of components and strain on components of said safety valve.
1 more element
Dependencies are inferred from the claim text.