Concentric tubing separation joint

Patent · Tue Jan 03 04:00:00 EST 1984

OSTI ID:6167257

Goldsmith, B

A concentric insulating tubular conduit string is described which has a separation joint comprising first and second couplings with concentric tubular sleeve members extending between them. An insulating conduit incorporating this integral separation joint can be employed for the delivery of a heated fluid, such as steam, through the conduit to an oil producing formation. The inner and outer tubular sleeves of the separation joint may be prestressed in tension and compression between axially spaced coupling members used to join the separation joint to the tubular conduit. One sleeve, which may be prestressed in tension, threadably engages both the upper and lower coupling members. The other sleeve, which may be prestressed in compression, threadably engages only one of the coupling members and abuts the other coupling member to carry compressive loads. This joint can be separated by merely severing the tensile loaded sleeve member, and upon severance of this separation joint, the conduit extending above can be removed from the well. 30 claims.

• Assignee: Baker International Corp.
• Patent Number(s): US 4423778
• OSTI ID: 6167257
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
020300* -- Petroleum-- Drilling & Production
COUPLINGS
DESIGN
EQUIPMENT
FIELD PRODUCTION EQUIPMENT
FLUID INJECTION
INJECTION WELLS
JOINTS
MECHANICAL PROPERTIES
OIL WELLS
PIPE JOINTS
PIPES
SLEEVES
SPECIFICATIONS
STEAM INJECTION
STRESS ANALYSIS
STRESSES
TENSILE PROPERTIES
THERMAL INSULATION
WELL INJECTION EQUIPMENT
WELLS