US3716155A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of handling drill pipe
Assignee: MOORE L CORP
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Filing: 1971-07-12
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Granted: 1973-02-13
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Expires: 1991-07-12
Abstract
Abstract As each successive stand of drill pipe is pulled out of a well hole at the bottom of an oil well derrick, it is set back in the derrick until a multiple stand set back has been formed. Then the lower end of the setback is swung out of the derrick and away from it while the upper end of the setback is being lowered. Substantially at the same time the setback is moved bodily, lower end first, away from the derrick to lay the setback down on a support.
Inventors
- 👤 H Woolslayer
- 👤 J Woolslayer
- 👤 C Jenkins
- 👤 E Campbell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 10:42
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/14; E21B19/15; E21B19/155
Claims Analysis
Total Claims: 7
Claim 1
Independent Claim
166 words
The method of removing drill pipe from an oil well derrick and laying it down outside the derrick, comprising setting back in the derrick each successive stand of drill pipe as it is pulled from the wellhole until a multiple stand setback is formed, gripping the central portion of the setback, swinging said gripped portion of the setback out of the derrick and upwardly in an arc of a circle while lowering the upper end of the setback to cause the lower end to swing outwardly away from the derrick and upwardly, the center of said circle being below said arc, and continuing to swing said gripped portion of the setback away from the derrick and downwardly in a continuation of said arc while lowering the upper end of the setback faster than said gripped portion is lowered to thereby move the setback bodily away from the derrick and down into a substantially horizontal position outside the derrick, and receiving and supporting the substantially horizontal setback.
Claim 2
Independent Claim
166 words
The method of removing drill pipe from an oil well derrick and laying it down outside the derrick, comprising setting back in the derrick each successive stand of drill pipe as it is pulled from the wellhole until a multiple stand setback is formed, gripping the central portion of the setback, swinging said gripped portion of the setback out of the derrick and upwardly in an arc of a circle while lowering the upper end of the setback to cause the lower end to swing outwardly away from the derrick and upwardly, the center of said circle being below said arc, and continuing to swing said gripped portion of the setback away from the derrick and downwardly in a continuation of said arc while lowering the upper end of the setback faster than said gripped portion is lowered to thereby move the setback bodily away from the derrick and down into a substantially horizontal position outside the derrick, and receiving and supporting the substantially horizontal setback.
Claim 3
Independent Claim
166 words
The method of removing drill pipe from an oil well derrick and laying it down outside the derrick, comprising setting back in the derrick each successive stand of drill pipe as it is pulled from the wellhole until a multiple stand setback is formed, gripping the central portion of the setback, swinging said gripped portion of the setback out of the derrick and upwardly in an arc of a circle while lowering the upper end of the setback to cause the lower end to swing outwardly away from the derrick and upwardly, the center of said circle being below said arc, and continuing to swing said gripped portion of the setback away from the derrick and downwardly in a continuation of said arc while lowering the upper end of the setback faster than said gripped portion is lowered to thereby move the setback bodily away from the derrick and down into a substantially horizontal position outside the derrick, and receiving and supporting the substantially horizontal setback.
Claim 4
Independent Claim
166 words
The method of removing drill pipe from an oil well derrick and laying it down outside the derrick, comprising setting back in the derrick each successive stand of drill pipe as it is pulled from the wellhole until a multiple stand setback is formed, gripping the central portion of the setback, swinging said gripped portion of the setback out of the derrick and upwardly in an arc of a circle while lowering the upper end of the setback to cause the lower end to swing outwardly away from the derrick and upwardly, the center of said circle being below said arc, and continuing to swing said gripped portion of the setback away from the derrick and downwardly in a continuation of said arc while lowering the upper end of the setback faster than said gripped portion is lowered to thereby move the setback bodily away from the derrick and down into a substantially horizontal position outside the derrick, and receiving and supporting the substantially horizontal setback.
Claim 5
Dependent Claim
43 words
The method recited in claim 1, in which each successive stand of drill pipe pulled from the well hole is moved back between the preceding stand and the well hole to from a single row of setback pipe extending away from the hole.
Claim 6
Dependent Claim
36 words
The method recited in claim 1, in which each successive stand of drill pipe pulled from the well hole is moved back to form a row of pipe substantially perpendicular to a radius of the hole.
Claim 7
Dependent Claim
25 words
The method recited in claim 1, in which said stands of drill pipe pulled from the well hole are formed into a substantially rectangular setback.
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) | 1976-02-13 | 1976-08-14 | 1977-02-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-02-13 | 1980-08-14 | 1981-02-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-02-13 | 1984-08-14 | 1985-02-13 | $7700.00 | Window Closed / Lapsed |