Locking production seal assembly

Patent · Tue Apr 14 00:00:00 EDT 1987

OSTI ID:6591389

Smith, Jr, S K; Baugh, J L

A locking production seal assembly is described for sealing a well tubing string within the bore of a surrounding well conduit, the surrounding conduit being provided with an internal recess for engagement by the seal assembly, comprising: a mandrel having an interior bore for conducting well bore fluids, in exterior, and upper connecting means for connection in a well tubing string leading to the well surface, and a lower end, the lower end being connected to the remainder of the mandrel to form an external support shoulder. The mandrel exterior has a region of reduced external diameter which defines an upper and lower shoulder in the mandrel exterior adjacent the lower end; an outer sleeve carried about the mandrel on the support shoulder while running into the well bore. The outer sleeve has an external seal region for sealingly engaging the interior bore of the surrounding well conduit and an internal seal region for sealingly engaging the mandrel exterior.

• Assignee: Hughes Tool Co., Houston, TX
• Patent Number(s): US 4657077
• OSTI ID: 6591389
• 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)
CONDUCTOR DEVICES
CONNECTORS
DRILL BITS
DRILL PIPES
DRILLING EQUIPMENT
ELECTRICAL EQUIPMENT
EQUIPMENT
FASTENERS
MECHANICAL STRUCTURES
NATURAL GAS WELLS
OIL WELLS
PIPES
SEALS
SUPPORTS
SURFACES
WELLS