Core barrel head assembly with an integrated sample orientation tool and system for using same
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.
1. A core barrel head assembly having an exterior surface and comprising:
a first interior cavity;
a sealed interior cavity spaced distally from the first interior cavity and having a closed proximal end;
a threaded proximal end portion for coupling to a wire line retrieval portion of a head assembly, wherein the first interior cavity extends distally from the threaded proximal end portion;
a threaded distal end portion, wherein the sealed interior cavity extends distally to the threaded distal end portion of the core barrel head assembly, wherein the threaded distal end portion defines an opening;
a seal coupler that is configured to be sealingly received in the opening of the threaded distal end portion;
a window that extends from the exterior surface into optical communication with the sealed interior cavity;
at least one electronic instrument that is configured to obtain core orientation data, wherein the at least one electronic instrument comprises at least one digital and/or electro-mechanical sensor in a core orientation data recording tool;
a check valve assembly that is configured to drive the seal coupler into a sealed position within the opening of the threaded distal end portion, wherein the check valve assembly is configured to provide fluid control for wire line operation; and
a transmitter configured to transmit core orientation data,
wherein the sealed interior cavity is sized and shaped to enclose the at least one electronic instrument.
2. The core barrel head assembly of claim 1 , further comprising:
a base portion, wherein the first interior cavity extends distally from the threaded proximal end portion to the base portion; and
a port positioned proximate the base portion and extending from the exterior surface into fluid communication with the first interior cavity.
3. The core barrel head assembly of claim 2 , further comprising a power source in operable communication with the at least one electronic instrument, wherein the power source is mounted therein the interior cavity.
4. The core barrel head assembly of claim 2 , further comprising a grease fitting mounted in the port to allow for selective passage of grease or other lubricant to and from the exterior surface of the core barrel head assembly into communication with the first interior cavity.
5. The core barrel head assembly of claim 1 , wherein the sealed interior cavity is sized and shaped to hermetically enclose the transmitter.
6. The core barrel head assembly of claim 1 , further comprising an orientation indicator module comprising a light emitter.
7. The core barrel head assembly of claim 6 , wherein the core barrel head assembly comprises a plurality of windows that extend from the exterior surface into optical communication with the sealed interior cavity proximate the closed proximal end of the sealed interior cavity, 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.
8. The core barrel head assembly of claim 7 , 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.
9. The core barrel head assembly of claim 6 , wherein the light emitter underlies the window, and wherein following retrieval of the core barrel head assembly from down a borehole, the light emitter is configured to provide a visual indication that a desired rotational orientation of the core barrel head assembly has been achieved.
10. The core barrel head assembly of claim 9 , wherein the light emitter is further configured to provide a visual indication that further rotation of the core barrel head assembly is required to reach the desired rotational orientation.
11. The core barrel head assembly of claim 1 , 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.
12. The core barrel head assembly of claim 11 , wherein the proximal end assembly of the check valve assembly defines a female threaded coupling that is configured to be threadably coupled to male threads defined on an exterior surface of the distal end portion of the core barrel head assembly.
13. The core barrel head assembly of claim 11 , 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.
14. 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 movement of the at least one electronic instrument.
15. The core barrel head assembly of claim 14 , wherein the at least one electronic instrument is programmed to obtain orientation data when the at least one electronic instrument senses no vibrations, and wherein the at least one electronic instrument is programmed to not obtain orientation data when the at least one electronic instrument determines that the core barrel head assembly is in motion while descending down or ascending up the hole and during drilling.
16. The core barrel head assembly of claim 1 , wherein the at least one electronic instrument is programmed to obtain orientation data based on a predetermined time interval scheme.
17. The core barrel head assembly of claim 1 , wherein the at least one electronic instrument is configured to obtain orientation data at random periods of time.
18. The core barrel head assembly of claim 1 , wherein the at least one electronic instrument is programmed to:
record orientation data relating to an orientation of the at least electronic instrument in a borehole; and
receive an interrogation command from an external communication device.
19. The core barrel head assembly of claim 1 , wherein the transmitter is configured to transmit core orientation data to a remote device through the window.
20. The core barrel head assembly of claim 1 , further comprising an O-ring seal that is mounted on a portion of the seal coupler and configured to seal between the portion of the seal coupler and an interior surface of the threaded distal end portion.