Well tool with improved valve support structure

Patent · Tue Nov 25 04:00:00 EST 1986

OSTI ID:6961805

Barrington, B Q

This patent describes a pressure responsive well testing apparatus which is actuated in response to changes of fluid pressure in the well-bore in which the apparatus is disposed, comprising: housing means adapted to be connected in a well test string, the housing means having a housing bore therethrough; a pressure responsive valve assembly disposed in the housing means, the pressure responsive valve assembly including a spherical valve member having a valve bore therethrough, and including upper and lower annular seats engaging the spherical valve member. The spherical valve member is rotatable within the seats between a closed position wherein the spherical valve member closes the housing bore, and an open position wherein the valve bore and the housing bore are aligned; pressure responsive actuating means engaged with the spherical valve member for rotating the spherical valve member between its open and closed positions upon relative longitudinal movement between the actuating means and the spherical valve member; upper load transfer means, disposed between the upper annular seat and the housing means, for transferring an upward force caused by an upwardly directed pressure differential across the spherical valve member to the housing means by compressional loading of the upper load transfer means; and lower load transfer means, disposed between the lower annular seat and the housing means, for transferring a downward force caused by a downward directed pressure differential across the spherical valve member to the housing means by compressional loading of the lower load transfer means.

• Assignee: Halliburton Co., Duncan, OK
• Patent Number(s): US 4624317
• OSTI ID: 6961805
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
ALIGNMENT
COMPRESSION
CONTROL EQUIPMENT
EQUIPMENT
FLOW REGULATORS
MECHANICAL STRUCTURES
MOTION
NATURAL GAS WELLS
OIL WELLS
POSITIONING
PRESSURE EFFECTS
RESERVOIR PRESSURE
ROTATION
SUPPORTS
TESTING
VALVES
WELL PRESSURE
WELLS