Core barrel head assembly with an integrated sample orientation tool and system for using same

Patent metadata

Field	Value
Publication number	US-10047581-B2
Application number	US-201514692484-A
Country	US
Kind code	B2
Filing date	Apr 21, 2015
Priority date	Apr 21, 2014
Publication date	Aug 14, 2018
Grant date	Aug 14, 2018

Abstract

A core barrel head assembly having at least one electronic instrument that is configured to obtain orientation data; a power source; and a communication means to receive and/or transmit orientation data for use in a core sample down hole surveying and sample orientation system that is configured to provide an indication of the orientation of a core sample relative to a body of material from which the core has been extracted, and also to a method of core sample orientation identification.

First claim

What is claimed is:

1. A core barrel head assembly, comprising:
an elongate tube body defining a first interior cavity and a selectively sealed interior cavity spaced distally from the first interior cavity, wherein the elongate tube body has a threaded proximal end for coupling to a wire line retrieval portion of a head assembly, wherein the first interior cavity extends distally from the threaded proximal end to a base portion of the elongate tube body, and wherein the elongate tube body further defines a port positioned proximate the base portion and extending from the exterior surface of the elongate tube body into fluid communication with the first interior cavity;
a plurality of windows defined in the elongate tube body that extend from the exterior surface of the elongate tube body into optical communication with the sealed interior cavity proximate a closed proximal end of the sealed interior cavity;
at least one electronic instrument that is configured to obtain orientation data mounted therein the sealed interior cavity, wherein the at least one electronic instrument comprises at least one digital and/or electro-mechanical sensors in a core orientation data recording tool that can be configured to determine a core orientation of a sample core just prior to or after the core break;
a power source in operable communication with the at least one electronic instrument, wherein the power source is mounted therein the interior cavity; and
communication means to receive and/or transmit core orientation data,
wherein the sealed interior cavity is sized and shaped to hermetically enclose the at least one electronic instrument and the power source.

2. The core barrel head assembly of claim 1 , wherein a pressure fitting is mounted in the port to allow for selective passage of fluid to and from the exterior surface of the barrel head assembly into communication with the first interior cavity.

3. The core barrel head assembly of claim 1 , wherein the sealed interior cavity is sized and shaped to hermetically enclose the communication means to receive and/or transmit orientation data.

4. The core barrel head assembly of claim 1 , further comprising an orientation indicator module comprising a plurality of light emitters.

5. The core barrel head assembly of claim 4 , wherein the orientation indicator module is sized and shaped to sealingly close the sealed interior cavity from any intrusion of pressurized fluid into the sealed interior cavity via the plurality of windows.

6. The core barrel head assembly of claim 4 , wherein the orientation indicator module is configured to orient or otherwise position the plurality of light emitters so that each light emitter underlies one window.

7. The core barrel head assembly of claim 4 , wherein the orientation indicator module further comprises a first sealing means for preventing any pressurized fluid from entering the sealed interior cavity from the plurality of windows defined in the elongate tube body.

8. The core barrel head assembly of claim 7 , wherein the first sealing means comprises at least one O-ring seal that is mounted on an exterior portion of the orientation indicator module and that is configured to seal between an exterior portion of the orientation indicator module and a portion of an interior surface of the sealed interior cavity.

9. The core barrel head assembly of claim 8 , wherein the sealed interior cavity can comprised at least one orienting slot defined therein.

10. The core barrel head assembly of claim 8 , wherein a desired position of the orientation indicator module is maintained relative to at least one O-ring seal.

11. The core barrel head assembly of claim 1 , wherein the sealed interior cavity extends distally to an open threaded distal end of the elongate tube body.

12. The core barrel head assembly of claim 11 , further comprising a seal coupler that is configured to be sealingly received in the open threaded distal end of the elongate tube body.

13. The core barrel head assembly of claim 12 , further comprising a second sealing means for preventing any pressurized fluid from entering the sealed interior cavity.

14. The core barrel head assembly of claim 13 , wherein the second sealing means comprises at least one O-ring seal that is mounted on a portion of the seal coupler and that is configured to seal between a portion of the seal coupler and a portion of an interior surface of the open distal end of the elongate tube body.

15. The core barrel head assembly of claim 12 , further comprising a check valve assembly configured to affect a hermetical seal of the sealed interior cavity and to provide fluid control for wire line operation.

16. The core barrel head assembly of claim 15 , wherein the check valve assembly comprises a coupled proximal end assembly and a distally tapered seat that defines an interior chamber for operative receipt of a check ball.

17. The core barrel head assembly of claim 16 , wherein the proximal end assembly defines a female threaded coupling that is configured to be threadably coupled to male threads defined on an exterior surface of a distal end of the elongate tube body.

18. The core barrel head assembly of claim 17 , wherein, when the proximal end assembly is threadably coupled to the distal end of the elongate tube body, the seal coupler is driven into a sealed position therein the sealed interior cavity to affect complete hermeticity.

19. The core barrel head assembly of claim 16 , wherein the interior chamber of the check valve assembly extends to a distal end of the check valve assembly, and wherein the check valve assembly further defines at least one port that extends from an exterior surface of the check valve assembly and is in fluid communication with the interior chamber of the check valve assembly.

20. The core barrel head assembly of claim 19 , wherein the interior chamber has a distally tapered seat that is adapted to selectively receive the check ball that is sized to selectively block the distally tapered seat.

21. The core barrel head assembly of claim 20 , wherein the interior chamber is sized and shaped to allow the check ball to selectively move axially between an open position, in which the check ball is spaced proximally away from the surface of the tapered seat so that pressurized fluid can move through the distal end of the check valve assembly and subsequently through the interior chamber to exit out of the at least one port, and a closed position, in which the check ball is pressurized against the surface of the tapered seat so that pressurized fluid cannot move through the check valve assembly.

22. The core barrel head assembly of claim 1 , wherein an exterior surface of the elongate tube body defines a plurality of female planar stops proximate the mid-body portion.

23. The core barrel head assembly of claim 1 , wherein the at least one electronic instrument is programmed to obtain orientation data when the at least one electronic instrument senses no relative movement of the at least one electronic instrument.

24. The core barrel head assembly of claim 23 , wherein the at least one electronic instrument is programmed to obtain orientation data when the at least one electronic instrument senses no vibrations.

25. The core barrel head assembly of claim 24 , wherein the at least one electronic instrument does not take any orientation measurements if vibrations are sensed by the at least one electronic

Assignees

• Longyear Tm Inc
• Globaltech Corp Pty Ltd

Inventors

• Drenth Christopher L
• Stewart Gordon
• Hejleh Khaled

Classifications

• E21B25/16 Primary

  for obtaining oriented cores · CPC title