Blast joint for snubbing installation
Patent
·
OSTI ID:6930287
This patent describes a blast joint apparatus for insertion into a well through a snubber unit. It comprises: a production tube; a concentric sub attached to a lower end of the production tube, threaded for connection to production tubing in the well; erosion resistant rings on the outer surface of the production tube, stacked upwardly from the concentric sub; a pressure jacket attached at a lower end thereof to the concentric sub and extending upwardly along the production tube outside the erosion resistant rings; first support means attached to an upper end of the production tube, to support the production tube; second support means attached to an upper end of the pressure jacket, to support the pressure jacket; third support means attached to the erosion resistant rings, to support the erosion resistant rings; anchor means for preventing relative vertical movement between the erosion resistant rings and the production tube; and load compensating means. This patent describes a method for attaching a blast joint to installed production tubing and inserting the blast joint into a well through snubber unit.
- Assignee:
- NOV; NOV-90-018064; EDB-90-106268
- Patent Number(s):
- A; US 4915177
- Application Number:
- PPN: US 7-382898A
- OSTI ID:
- 6930287
- Country of Publication:
- United States
- Language:
- English
Similar Records
Blast joint
Method for installing a blast joint
Apparatus for operating a downhole tool using coil tubing
Patent
·
Mon Dec 25 23:00:00 EST 1989
·
OSTI ID:6975557
Method for installing a blast joint
Patent
·
Mon Feb 22 23:00:00 EST 1988
·
OSTI ID:5146269
Apparatus for operating a downhole tool using coil tubing
Patent
·
Mon Mar 16 23:00:00 EST 1992
·
OSTI ID:5358261