US3829134A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotary tubular coupling
Assignee: Chevron USA Inc
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Filing: 1972-07-24
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Granted: 1974-08-13
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Expires: 1992-07-24
Abstract
Abstract Method and apparatus for directionally applying high pressure jets to well liners to clean openings which are plugged with foreign matter. High velocity jets of liquid having a velocity in excess of 700 feet per second are jetted from jet orifices having a standoff distance between 5 and 10 diameters of the orifice from the openings to remove substantially all plugging material from the openings. Apparatus for circulating foam is provided in combination with apparatus for delivering high pressure jets. New swivels and check valves permit rotation and reciprocation of the jet tool and tubing string while maintaining high pressure in the apparatus.
Inventors
- 👤 S Hutchison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 15:13
CPC Classifications
E; E21; E21B; E21B37/00; E21B37/08; E21B41/00; E21B41/0078; F; F16; F16L; F16L27/00; F16L27/08; F16L27/087; F16L27/093; Y; Y10; Y10S; Y10S285/00; Y10S285/901
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
369 words
A rotating swivel comprising a housing member having a central opening through its entire length, a tubular mandril having a central flow opening through its entire length positioned in the central opening of said housing member, means for closing off one end of said central flow opening of said tubular mandril to flow, means on the other end of said tubular mandril adaptable to be connected with a tubing string, bearing means rotatably mounting said mandril in said central opening of said housing member, said bearing means including ball bearing sets positioned above and below the aftersaid opening intermediate the ends of said mandril, an opening comprising a plurality of holes in the wall of said mandril intermediate the ends of said mandril forming a mandril flow path from the outside of said mandril to the central flow opening of said mandril, the total area of said holes being at least as large as the crosssectional flow area of the central flow opening of the mandril, port means forming a housing flow path through said housing member communicating with the opening intermediate the ends of said mandril, said port means being arranged to provide such communication continuously during rotation of said mandril with respect to said housing member, a spacer insert having a plurality of holes aligned with said port means of said housing member and sAid opening of said mandril inserted between said housing member and said mandril, said housing member having an internal annular shoulder, packing means positioned between said housing member and said mandril immediately above and below said spacer insert and in contact therewith to prevent fluid flow to said bearing sets between said housing member and said mandril, relief holes in said housing member between each of said packing means and said bearing sets, retainer nut means threadably connected to one end of said housing member for compressing said packing means both above and below said spacer insert thereby applying equal pressure to both of the packing means, the upper packing means being compressed by said shoulder, and the lower packing means being compressed by said retainer nut means and means for connecting a conduit to said port means outside of said housing member.
Claim 2
Dependent Claim
369 words
A rotating swivel comprising a housing member having a central opening through its entire length, a tubular mandril having a central flow opening through its entire length positioned in the central opening of said housing member, means for closing off one end of said central flow opening of said tubular mandril to flow, means on the other end of said tubular mandril adaptable to be connected with a tubing string, bearing means rotatably mounting said mandril in said central opening of said housing member, said bearing means including ball bearing sets positioned above and below the aftersaid opening intermediate the ends of said mandril, an opening comprising a plurality of holes in the wall of said mandril intermediate the ends of said mandril forming a mandril flow path from the outside of said mandril to the central flow opening of said mandril, the total area of said holes being at least as large as the crosssectional flow area of the central flow opening of the mandril, port means forming a housing flow path through said housing member communicating with the opening intermediate the ends of said mandril, said port means being arranged to provide such communication continuously during rotation of said mandril with respect to said housing member, a spacer insert having a plurality of holes aligned with said port means of said housing member and sAid opening of said mandril inserted between said housing member and said mandril, said housing member having an internal annular shoulder, packing means positioned between said housing member and said mandril immediately above and below said spacer insert and in contact therewith to prevent fluid flow to said bearing sets between said housing member and said mandril, relief holes in said housing member between each of said packing means and said bearing sets, retainer nut means threadably connected to one end of said housing member for compressing said packing means both above and below said spacer insert thereby applying equal pressure to both of the packing means, the upper packing means being compressed by said shoulder, and the lower packing means being compressed by said retainer nut means and means for connecting a conduit to said port means outside of said housing member.
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) | 1977-08-12 | 1978-02-11 | 1978-08-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-12 | 1982-02-11 | 1982-08-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-12 | 1986-02-11 | 1986-08-13 | $7700.00 | Window Closed / Lapsed |