US3827487A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing injector and stuffing box construction
Assignee: Baker Hughes Oilfield Operations LLC
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Filing: 1973-04-30
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Granted: 1974-08-06
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Expires: 1993-04-30
Abstract
Abstract A tubing injector base and a tubing stripper are mounted on the top flange of a blowout preventer assembly at the top of a well. The tubing stripper comprises a longitudinally split housing and a removable stripper rubber.
Inventors
- 👤 J Jackson
- 👤 J Steinwinder
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 14:46
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/068; E21B33/072
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
104 words
In combination, tubing injector means for running and retrieving a length of tubing into and from a well, and stuffing box means for stripping the tubing, said tubing injector means having a platform and said stuffing box means having a body connected to said platform, blowout preventer means below said tubing injector means, said blowout preventer means having a top flange, said body of said stuffing box means having a bottom flange, and fastener means connecting said platform of said tubing injector means with said top flange of said blowout preventer means and said bottom flange of said body of said stuffing box means.
Claim 2
Dependent Claim
104 words
In combination, tubing injector means for running and retrieving a length of tubing into and from a well, and stuffing box means for stripping the tubing, said tubing injector means having a platform and said stuffing box means having a body connected to said platform, blowout preventer means below said tubing injector means, said blowout preventer means having a top flange, said body of said stuffing box means having a bottom flange, and fastener means connecting said platform of said tubing injector means with said top flange of said blowout preventer means and said bottom flange of said body of said stuffing box means.
Claim 3
Dependent Claim
41 words
In the combination of claim 1, said stuffing box means including resiliently deformable stripper means, and means for axially and radially deforming said stripper means into engagement with a tubing extending through said stuffing box means and said tubing injector means.
Claim 4
Dependent Claim
102 words
In combination, tubing injector means for running and retrieving a length of tubing into and from a well, and stuffing box means for stripping the tubing, said tubing injector means having a platform and said stuffing box means having a body connected to said platform, said stuffing box means including resiliently deformable stripper means, and means for axially and radially deforming said stripper means into engagement with a tubing extending through said stuffing box means and said tubing injector means, said stuffing box means including laterally separable means confining said stripper means between said tubing injector means and said stuffing box means.
Claim 5
Dependent Claim
102 words
In combination, tubing injector means for running and retrieving a length of tubing into and from a well, and stuffing box means for stripping the tubing, said tubing injector means having a platform and said stuffing box means having a body connected to said platform, said stuffing box means including resiliently deformable stripper means, and means for axially and radially deforming said stripper means into engagement with a tubing extending through said stuffing box means and said tubing injector means, said stuffing box means including laterally separable means confining said stripper means between said tubing injector means and said stuffing box means.
Claim 6
Dependent Claim
102 words
In combination, tubing injector means for running and retrieving a length of tubing into and from a well, and stuffing box means for stripping the tubing, said tubing injector means having a platform and said stuffing box means having a body connected to said platform, said stuffing box means including an upper wear bushing having a lower end flange and a lower wear bushing having an upper end flange, resiliently deformable stripper means between said end flanges, and means for forcing one of said wear bushings towards the other of said wear bushings to deform said stripper means between said end flanges.
Claim 7
Dependent Claim
102 words
In combination, tubing injector means for running and retrieving a length of tubing into and from a well, and stuffing box means for stripping the tubing, said tubing injector means having a platform and said stuffing box means having a body connected to said platform, said stuffing box means including an upper wear bushing having a lower end flange and a lower wear bushing having an upper end flange, resiliently deformable stripper means between said end flanges, and means for forcing one of said wear bushings towards the other of said wear bushings to deform said stripper means between said end flanges.
Claim 8
Dependent Claim
28 words
In the combination of claim 4, said stuffing box means including laterally separable means confining said stripper means between said tubing injector means and said stuffing box means.
Claim 9
Dependent Claim
36 words
In the combination of claim 4, said stuffing box means also including longitudinally split body sections having means coengageable with said wear bushings to limit axial separation, and means separably interconnecting said longitudinally split body sections.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-05 | 1978-02-04 | 1978-08-06 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-05 | 1982-02-04 | 1982-08-06 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-05 | 1986-02-04 | 1986-08-06 | $7700.00 | Window Closed / Lapsed |