US3955625A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cementing basket
Assignee: Schlumberger Technology Corp
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Filing: 1975-03-06
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Granted: 1976-05-11
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Expires: 1995-03-06
Abstract
Abstract Disclosed is an improved cementing basket for use in cementing the borehole of oil wells or gas wells. In some of the conventional cementing baskets metal slats are used to form the rigid part of the basket petals. The basket of this invention utilizes a wire loop, such as steel spring wire, for the rigid member of the basket petal.
Inventors
- 👤 Earnest D. Hughes
- 👤 Peter W. Seitz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 00:30
CPC Classifications
E; E21; E21B; E21B33/00; E21B33/10; E21B33/13; E21B33/136
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
129 words
A basket apparatus for use in cementing a wellbore, which includes: a series of petal members, an inner ring, and an outer ring which has a larger diameter than the inner ring and which fits over the inner ring; each petal member comprising a flat section of a flexible elastomer material, which includes a leading edge, a trailing edge, and an elongate steel spring wire loop; the wire loop being secured to the leading edge of each petal member, the wire loop including an open end which is fastened between the inner and outer rings, and the leading edge of each petal member being in overlapping contact with the trailing edge of an adjacent petal member, such that the arrangement of the petal members defines a generally circular pattern.
Claim 2
Dependent Claim
129 words
A basket apparatus for use in cementing a wellbore, which includes: a series of petal members, an inner ring, and an outer ring which has a larger diameter than the inner ring and which fits over the inner ring; each petal member comprising a flat section of a flexible elastomer material, which includes a leading edge, a trailing edge, and an elongate steel spring wire loop; the wire loop being secured to the leading edge of each petal member, the wire loop including an open end which is fastened between the inner and outer rings, and the leading edge of each petal member being in overlapping contact with the trailing edge of an adjacent petal member, such that the arrangement of the petal members defines a generally circular pattern.
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) | 1979-05-11 | 1979-11-10 | 1980-05-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-05-11 | 1983-11-10 | 1984-05-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-05-11 | 1987-11-10 | 1988-05-11 | $7700.00 | Window Closed / Lapsed |