US3976132A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tubing spreader mechanism
Assignee: LAMB IND Inc
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Filing: 1975-05-21
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Granted: 1976-08-24
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Expires: 1995-05-21
Abstract
Abstract A tubing spreader mechanism for positioning vertically disposed tubing strings in a multiple completion well to maintain them in a desired center-to-center alignment. The tubing spreader has a support member designed to mount on top of a multi-string spider. An adjustable roller assembly is mounted to the support member and engages the tubing strings placing them in the desired center-to-center alignment with the spider. The tubing spreader mechanism can be used with tubing strings of identical diameters or different diameters.
Inventors
- 👤 Roland George Harper, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 20:00
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/02; E21B33/03; E21B33/04; E21B33/047; E21B19/00; E21B19/10; E21B19/102
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
99 words
A tubing spreader mechanism for use with a dual string spider to maintain proper alignment and center-to-center distance between vertically disposed tubing strings entering a well bore, comprising: a support member for mounting on top of a dual string spider; first and second guide rollers rotatable about and having respective shafts independently and adjustably movable in a horizontal direction within slots formed in said support member; and threaded adjustment rods carried in threaded supports attached to said support member for positioning said guide rollers in contact with the tubing strings placing them in desired center-to-center alignment with the spiders.
Claim 2
Dependent Claim
99 words
A tubing spreader mechanism for use with a dual string spider to maintain proper alignment and center-to-center distance between vertically disposed tubing strings entering a well bore, comprising: a support member for mounting on top of a dual string spider; first and second guide rollers rotatable about and having respective shafts independently and adjustably movable in a horizontal direction within slots formed in said support member; and threaded adjustment rods carried in threaded supports attached to said support member for positioning said guide rollers in contact with the tubing strings placing them in desired center-to-center alignment with the spiders.
Claim 3
Dependent Claim
25 words
The apparatus of claim 1, further comprising: locking means for securing said first and second guide rollers in a fixed position within said support member.
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) | 1979-08-24 | 1980-02-23 | 1980-08-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-24 | 1984-02-23 | 1984-08-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-24 | 1988-02-23 | 1988-08-24 | $7700.00 | Window Closed / Lapsed |