US4518050A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating double barrel core sampler
Assignee: Chevron USA Inc
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Filing: 1983-06-30
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Granted: 1985-05-21
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Expires: 2003-06-30
Abstract
Abstract The present invention provides disclosure of a core sampler that includes a rotatably extending outer barrel containing a relatively non-rotating core barrel which is extendable with the outer barrel in response to drilling mud pressure into the material to be cored by a mud turbine which rotates the outer barrel. The core sampler may be run in and out of a drill string on a wire line.
Inventors
- 👤 Steinar Sollie
- 👤 Arild A. Andresen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:06
CPC Classifications
E; E21; E21B; E21B4/00; E21B4/02; E21B25/00; E21B25/02; E21B25/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
107 words
A wire line core sampler for use in a drill string sub comprising a cylindrical guide tube removably insertable into said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; and downhole mud turbine means insertable into said drill string sub and connected to said outer cylindrical barrel and responsive to liquid pressure in the drill string for rotating said outer barrel and for extending said outer barrel and said core barrel through the lower end of said sub to take a soil sample.
Claim 2
Dependent Claim
107 words
A wire line core sampler for use in a drill string sub comprising a cylindrical guide tube removably insertable into said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; and downhole mud turbine means insertable into said drill string sub and connected to said outer cylindrical barrel and responsive to liquid pressure in the drill string for rotating said outer barrel and for extending said outer barrel and said core barrel through the lower end of said sub to take a soil sample.
Claim 3
Dependent Claim
121 words
A wire line core sampler for use in a drill string sub comprising a cylindrical guide tube removably insertable into said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith but without substantial rotation therewith; and downhole mud turbine means connected to said outer barrel and insertable into said sub and responsive to liquid pressure for rotating said outer barrel and for extending said outer barrel and said core barrel through the lower end of said sub to take a soil sample.
Claim 4
Dependent Claim
121 words
A wire line core sampler for use in a drill string sub comprising a cylindrical guide tube removably insertable into said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith but without substantial rotation therewith; and downhole mud turbine means connected to said outer barrel and insertable into said sub and responsive to liquid pressure for rotating said outer barrel and for extending said outer barrel and said core barrel through the lower end of said sub to take a soil sample.
Claim 5
Dependent Claim
138 words
A wire line core sampler for use in a drill string comprising a tubular cylindrical sub connectable to the lower end of a drill string; a cylindrical guide tube removably insertable into said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith but without substantial rotation therewith; downhole mud turbine means insertable into said drill string sub and connected to said outer cylindrical barrel and responsive to liquid pressure in the drill string for rotating said outer barrel for extending said outer barrel and said core barrel through the lower end of said sub to take a soil sample.
Claim 6
Dependent Claim
138 words
A wire line core sampler for use in a drill string comprising a tubular cylindrical sub connectable to the lower end of a drill string; a cylindrical guide tube removably insertable into said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith but without substantial rotation therewith; downhole mud turbine means insertable into said drill string sub and connected to said outer cylindrical barrel and responsive to liquid pressure in the drill string for rotating said outer barrel for extending said outer barrel and said core barrel through the lower end of said sub to take a soil sample.
Claim 7
Dependent Claim
283 words
A wire line core sampler for use in a drill string sub comprising a cylindrical guide tube removably insertable into said sub and forming an annular space therewith; mud seal means for closing off the annular space between said tubular sub and said guide tube and for preventing said guide tube from extending out of the lower end of said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means having an off round central opening therethrough connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith without substantial rotational movement therewith; an elongated rod extending through said off round opening of said adaptor means, said rod having an upper portion shaped to engage said off round opening for rotating said adaptor means and a lower portion shaped to rotate freely within said off round opening; upper sleeve means connected to the upper end of said guide tube, said sleeve means having a central opening therein; a mud turbine connected to said elongated rod through said central opening in said upper sleeve means for rotating said rod; mud exhaust means in said mud turbine for exhausting mud into the space between said adaptor means and said upper sleeve means; and restricted mud flow passageway means permitting a portion of the mud to flow through said adaptor means through the annular space between said guide tube and said outer cylindrical barrel and a portion of the mud to flow through the annular space between said outer cylindrical barrel and said core barrel out of said sub.
Claim 8
Dependent Claim
283 words
A wire line core sampler for use in a drill string sub comprising a cylindrical guide tube removably insertable into said sub and forming an annular space therewith; mud seal means for closing off the annular space between said tubular sub and said guide tube and for preventing said guide tube from extending out of the lower end of said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means having an off round central opening therethrough connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith without substantial rotational movement therewith; an elongated rod extending through said off round opening of said adaptor means, said rod having an upper portion shaped to engage said off round opening for rotating said adaptor means and a lower portion shaped to rotate freely within said off round opening; upper sleeve means connected to the upper end of said guide tube, said sleeve means having a central opening therein; a mud turbine connected to said elongated rod through said central opening in said upper sleeve means for rotating said rod; mud exhaust means in said mud turbine for exhausting mud into the space between said adaptor means and said upper sleeve means; and restricted mud flow passageway means permitting a portion of the mud to flow through said adaptor means through the annular space between said guide tube and said outer cylindrical barrel and a portion of the mud to flow through the annular space between said outer cylindrical barrel and said core barrel out of said sub.
Claim 9
Dependent Claim
290 words
A wire line core sampler for use in a drill string comprising a tubular cylindrical sub connectable to the lower end of a drill string; a cylindrical guide tube removably insertable into said sub; mud seal means for closing off the annular space between said tubular sub and said guide tube and for preventing said guide tube from extending out of the lower end of said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means having an off round central opening therethrough connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith without substantial rotational movement therewith; an elongated rod extending through said off round opening of said adaptor means, said rod having an upper portion shaped to engage said off round opening for rotating said adaptor means and a lower portion shaped to rotate freely within said off round opening; upper sleeve means connected to the upper end of said guide tube, said sleeve means having a central opening therein; a mud turbine connected to said elongated rod through said central opening in said upper sleeve means for rotating said rod; mud exhaust means in said mud turbine for exhausting mud into the space between said adaptor means and said upper sleeve means; and restricted mud flow passageway means permitting a portion of the mud to flow through said adaptor means through the annular space between said guide tube and said outer cylindrical barrel and a portion of the mud to flow through the annular space between said outer cylindrical barrel and said core barrel and out of said sub.
Claim 10
Dependent Claim
290 words
A wire line core sampler for use in a drill string comprising a tubular cylindrical sub connectable to the lower end of a drill string; a cylindrical guide tube removably insertable into said sub; mud seal means for closing off the annular space between said tubular sub and said guide tube and for preventing said guide tube from extending out of the lower end of said sub; an outer cylindrical barrel rotatably and reciprocally mounted within said guide tube and extendable out through the lower end of said sub; a core barrel positioned within said outer cylindrical barrel; adaptor collar means having an off round central opening therethrough connecting said core barrel to said outer cylindrical barrel for reciprocal movement therewith without substantial rotational movement therewith; an elongated rod extending through said off round opening of said adaptor means, said rod having an upper portion shaped to engage said off round opening for rotating said adaptor means and a lower portion shaped to rotate freely within said off round opening; upper sleeve means connected to the upper end of said guide tube, said sleeve means having a central opening therein; a mud turbine connected to said elongated rod through said central opening in said upper sleeve means for rotating said rod; mud exhaust means in said mud turbine for exhausting mud into the space between said adaptor means and said upper sleeve means; and restricted mud flow passageway means permitting a portion of the mud to flow through said adaptor means through the annular space between said guide tube and said outer cylindrical barrel and a portion of the mud to flow through the annular space between said outer cylindrical barrel and said core barrel and out of said sub.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-05-20 | 1988-11-19 | 1989-05-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-05-20 | 1992-11-19 | 1993-05-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-05-20 | 1996-11-19 | 1997-05-21 | $7700.00 | Window Closed / Lapsed |