Rotating double barrel core sampler

• US 4,518,050 A
• Filed: 06/30/1983
• Issued: 05/21/1985
• Est. Priority Date: 06/30/1983
• Status: Expired due to Term

• Current Assignee: Chevron Research Company (Chevron Corp.)
• Original Assignee: Chevron Research Company (Chevron Corp.)
• Inventors: Sollie, Steinar, Andresen, Arild A.
• Primary Examiner(s): Swisher, S. Clement
• Assistant Examiner(s): NOLAND, THOMAS
• Application Number:
  US06/509,891
• Time in Patent Office: 691 Days
• Field of Search: 73/864.45, 73/864.44, 175/58, 175/403, 175/404, 175/246, 175/244, 175/247, 175/248, 175/249, 175/250, 175/253, 175/254, 175/296, 175/239, 175/240, 175/236, 175/309, 175/332, 175/333, 175/330 , 175/20
• US Class Current: 175/250
• CPC Class Codes: E21B 25/04 the core receiver having a core forming cutting edge or element, e.g. punch type core barrels
• CPC Class Codes: E21B 4/02 Fluid rotary type drives

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.

Claims

1. 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.

2. 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.

3. 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.

4. 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.

5. 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.