US3745776A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Anchoring method for offshore marine structures
Assignee: Texaco Inc
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Filing: 1971-05-13
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Granted: 1973-07-17
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Expires: 1991-05-13
Abstract
Abstract The invention relates to a method for forming an anchoring or foundation base for an offshore marine structure. Said method includes the embedment of an elongated support member lower end, which extends downwardly into the substratum and upwardly through the body of water. The lower end of said member is firmly fixed in the substratum by the application of a cement jacket thereabout which terminates at the lower end of the column in an outwardly projecting, partially bulbous cement base. The apparatus for achieving said foundation includes an open structured anchoring cage which depends from the support member to form a firm engagement with the cement base.
Inventors
- 👤 L Hubby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 18:43
CPC Classifications
E; E02; E02D; E02D27/00; E02D27/32; E02D27/50; E02B; E02B17/00; E02B17/02
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
179 words
Method for embedding an elongated cylindrical casing into an underconsolidated offshore substrate, which casing includes; an open structured reinforcing cage at the lower end thereof, said cage having a longitudinally displaceable liner element disposed axially thereof and displaceable between upper and lower positions to form a longitudinal passage through said reinforcing cage, which method includes the steps of, urging said elongated casing downwardly into said substrate to form a borehole in the latter approximately the diameter of said casing outer diameter, said displaceable lining being positioned axially of said reinforcing cage to define a drill guide passage through the latter, forming a cavity at the lower end of said borehole, said cavity having a portion thereof extending outwardly beyond said borehole diameter, withdrawing said liner from its lower position in said cage while maintaining the latter within said cavity, introducing a stream of fluidized cement through said bore and into said cavity to substantially occupy the latter and to immerse said reinforcing cage whereby to subsequently solidify and unitize said cylindrical casing with said solidified cement in said cavity.
Claim 2
Dependent Claim
179 words
Method for embedding an elongated cylindrical casing into an underconsolidated offshore substrate, which casing includes; an open structured reinforcing cage at the lower end thereof, said cage having a longitudinally displaceable liner element disposed axially thereof and displaceable between upper and lower positions to form a longitudinal passage through said reinforcing cage, which method includes the steps of, urging said elongated casing downwardly into said substrate to form a borehole in the latter approximately the diameter of said casing outer diameter, said displaceable lining being positioned axially of said reinforcing cage to define a drill guide passage through the latter, forming a cavity at the lower end of said borehole, said cavity having a portion thereof extending outwardly beyond said borehole diameter, withdrawing said liner from its lower position in said cage while maintaining the latter within said cavity, introducing a stream of fluidized cement through said bore and into said cavity to substantially occupy the latter and to immerse said reinforcing cage whereby to subsequently solidify and unitize said cylindrical casing with said solidified cement in said cavity.
Claim 3
Dependent Claim
50 words
In the method as defined in claim 1, wherein said cavity is formed generally hemispherical in shape, having an upper wall extending generally in a plane normal to the longitudinal axis of said bore and said reinforcing cage extends downwardly to engage the lower curved wall of said hemispherical cavity.
Claim 4
Dependent Claim
41 words
In the method as defined in claim 1, including the step of forming a closure across the lower end of said reinforcing cage while the latter is within said cavity and prior to the introduction of fluidized cement into the latter.
Claim 5
Dependent Claim
45 words
In the method as defined in claim 1, including the step of, forming a pilot bore within said substrate prior to the formation of said cavity, and thereafter closing said pilot bore to preclude entry of fluid cement thereinto as said cement enters said cavity.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-07-16 | 1977-01-15 | 1977-07-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-16 | 1981-01-15 | 1981-07-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-16 | 1985-01-15 | 1985-07-17 | $7700.00 | Window Closed / Lapsed |