Metal seal tubing plug

Patent · Tue Mar 24 04:00:00 EST 1987

OSTI ID:6670673

Johnson, D V; Childers, T W

A plug is described for use in sealing a tubing having a locking recess and a tapered sealing surface formed on the inner wall thereof, the recess having a tapered surface comprising: a housing containing an annular metal seal means; a mandrel having a tapered outer surface arranged in the housing; first and second sets of segmented, tapered lockdown rings arranged in the housing; first set of segmented, second and third tapered solid rings arranged in the housing, the first tapered lockdown rings being positioned between and having matching tapers with first and second set of segmented tapered solid rings. The second tapered lockdown rings are positioned between and have matching tapers with the second and third tapered solid rings; each lockdown ring having an inner half-cylinder bearing contacting the tapered mandrel and connected to the housing surface; and an inner solid rod mandrel extending through the tapered mandrel.

• Assignee: Exxon Research Production Research Co., Houston, TX
• Patent Number(s): US 4651818
• OSTI ID: 6670673
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
03 NATURAL GAS
030300 -- Natural Gas-- Drilling
Production
& Processing
42 ENGINEERING
420206 -- Engineering-- Mining & Drilling Equipment & Facilities-- (1980-1989)
CLOSURES
CYLINDERS
DRILL PIPES
DRILLING EQUIPMENT
ELEMENTS
EQUIPMENT
METALS
NATURAL GAS WELLS
OIL WELLS
PIPES
POSITIONING
RINGS
SEALS
WELLS