Flapper type annulus pressure responsive tubing tester valve

Patent · Tue Sep 22 04:00:00 EDT 1987

OSTI ID:6054354

Ringgenberg, P D

This patent describes a method of pressure testing a pipe string in a well bore, comprising: providing a pipe string having a tubing tester valve at the lower end; running the pipe string into the well bore; filling the interior of the pipe string from below with well bore fluid through the tubing tester valve; testing the integrity of the pipe string by applying pressure to the interior of the pipe string above the tubing tester valve thereagainst; sealing across the annulus between the pipe string and the wall of the well bore below the tubing tester valve with a packer; trapping hydrostatic pressure on the interior of the tubing tester valve in response to the sealing; increasing the pressure in the well bore above the packer to open the tubing tester valve; opposing the pressure increase with the trapped hydrostatic pressure; and opening the tubing tester valve only when the force resulting from the increased pressure exceeds the force resulting from the trapped hydrostatic pressure, to flow in the pipe string from above to below the tubing tester valve.

• Assignee: Halliburton Co., Duncan, OK
• Patent Number(s): US 4694903
• OSTI ID: 6054354
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
CONTROL
CONTROL EQUIPMENT
DRILL PIPES
DRILLING EQUIPMENT
EQUIPMENT
FLOW REGULATORS
HYDROSTATICS
MEASURING INSTRUMENTS
METERING
NATURAL GAS WELLS
OIL WELLS
PIPES
PRESSURE CONTROL
PRESSURE GAGES
PRESSURE MEASUREMENT
RESERVOIR PRESSURE
SEALS
VALVES
WELL PRESSURE
WELLS