Patent US3593529A successfully refreshed from Google Patents.
US3593529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for installing drilling platforms
Assignee: IND NV
•
Filing: 1968-10-09
•
Granted: 1971-07-20
•
Expires: 1988-10-09
Abstract
Abstract A buoyant mobile drilling platform has a gap in its side in which is detachably disposed a permanent drilling platform. The two platforms are floated to the drilling site and temporarily emplaced. If a test drill shows the presence of gas or oil, then the permanent platform is permanently emplaced and the mobile platform is floated away.
Inventors
- 👤 August Hendrik Maria Smulders
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 03:21
CPC Classifications
E; E02; E02B; E02B17/00; E02B17/02; E02B17/021; E02B2017/0056; E02B2017/0073; E02B2017/0082
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
202 words
A method for the installation of a drilling platform, comprising floating to a drilling site an interconnected float and drilling platform each having a plurality of relatively vertically movable pillars with said interconnected float and platform having upper surfaces in the same plane, floating said float and platform to the drilling site with their pillars raised, lowering the pillars of said float relative to said float until the lowered pillars contact the sea floor and support said float and platform in raised position above the surface of the water, lowering the pillars of said platform until the last-named pillars support said platform above the surface of the water and at the level of said float moving a portable derrick across the upper surface of said float and into supported relationship on the upper surface of said platform with said upper surfaces of said float and platform disposed in a common horizontal plane, performing a drilling operation with said derrick supported on said platform, moving said derrick back onto the upper surface of said float, lowering said float and derrick to floating support in the water and raising the pillars of said float and floating said float and derrick away from said platform.
Claim 2
Independent Claim
202 words
A method for the installation of a drilling platform, comprising floating to a drilling site an interconnected float and drilling platform each having a plurality of relatively vertically movable pillars with said interconnected float and platform having upper surfaces in the same plane, floating said float and platform to the drilling site with their pillars raised, lowering the pillars of said float relative to said float until the lowered pillars contact the sea floor and support said float and platform in raised position above the surface of the water, lowering the pillars of said platform until the last-named pillars support said platform above the surface of the water and at the level of said float moving a portable derrick across the upper surface of said float and into supported relationship on the upper surface of said platform with said upper surfaces of said float and platform disposed in a common horizontal plane, performing a drilling operation with said derrick supported on said platform, moving said derrick back onto the upper surface of said float, lowering said float and derrick to floating support in the water and raising the pillars of said float and floating said float and derrick away from said platform.
References Cited (Backward Citations)
GB598805A
Cited
US2515540A
Cited
US2699321A
Cited
US3001594A
Cited
US3001595A
Cited
US2837897A
Cited
US2997852A
Cited
US3201945A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-07-19 | 1975-01-18 | 1975-07-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-19 | 1979-01-18 | 1979-07-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-19 | 1983-01-18 | 1983-07-20 | $7700.00 | Window Closed / Lapsed |