US3169586A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Under water well-drilling method
Assignee: Shell USA Inc
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Filing: 1963-03-11
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Granted: 1965-02-16
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Expires: 1983-03-11
Abstract
No abstract record available.
Inventors
- 👤 Billy J Bullard
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 15:07
CPC Classifications
E; E21; E21B; E21B19/00; E21B19/08; E21B19/09; E21B7/00; E21B7/12
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
139 words
IN A METHOD OF DRILLING AN UNDERWATER WELL FROM A FLOATING DRILLING VESSEL EQUIPPED WITH ROTARY TABLE FOR ENGAGING THE UPPER AND LOWER COUPLED TOGETHER SECTIONS OF A KELLY IN A DRILL STRING HAVING A TELESCOPING SECTION IN ITS LENGTH, THE STEPS OF THE METHOD COMPRISING (A) DRILLING A HOLE IN THE OCEAN FLOOR WHILE THE LOWER SECTION OF KELLY IS IN ENGAGEMENT WITH THE ROTARY TABLE, (B) CONTINUING DRILLING OF THE HOLE WHILE THE UPPER SECTION OF KELLY IS IN ENGAGEMENT WITH THE ROTARY TABLE, (C) STOPPING DRILLING OF THE HOLE AND SECURING THE DRILL STRING TO THE VESSEL AT A POINT BELOW THE UPPER KELLY SECTION, (D) INSTALLING A PIPE SECTION IN THE DRILL STRING BETWEEN THE KELLY SECTIONS, AND (E) CONTINUING DRILLING OF THE HOLE WITH THE UPPER KELLY SECTION IN ENGAGEMENT WITH THE ROTARY TABLE.
Claim 2
Dependent Claim
139 words
IN A METHOD OF DRILLING AN UNDERWATER WELL FROM A FLOATING DRILLING VESSEL EQUIPPED WITH ROTARY TABLE FOR ENGAGING THE UPPER AND LOWER COUPLED TOGETHER SECTIONS OF A KELLY IN A DRILL STRING HAVING A TELESCOPING SECTION IN ITS LENGTH, THE STEPS OF THE METHOD COMPRISING (A) DRILLING A HOLE IN THE OCEAN FLOOR WHILE THE LOWER SECTION OF KELLY IS IN ENGAGEMENT WITH THE ROTARY TABLE, (B) CONTINUING DRILLING OF THE HOLE WHILE THE UPPER SECTION OF KELLY IS IN ENGAGEMENT WITH THE ROTARY TABLE, (C) STOPPING DRILLING OF THE HOLE AND SECURING THE DRILL STRING TO THE VESSEL AT A POINT BELOW THE UPPER KELLY SECTION, (D) INSTALLING A PIPE SECTION IN THE DRILL STRING BETWEEN THE KELLY SECTIONS, AND (E) CONTINUING DRILLING OF THE HOLE WITH THE UPPER KELLY SECTION IN ENGAGEMENT WITH THE ROTARY TABLE.
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) | 1968-02-16 | 1968-08-17 | 1969-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-02-16 | 1972-08-17 | 1973-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-02-16 | 1976-08-17 | 1977-02-16 | $7700.00 | Window Closed / Lapsed |