Downhole tool assemblies
AssigneeReflex Instruments Asia Pacific Pty Ltd
InventorsJames Barry Reilly, Nicholas Coplin, Amir Mokaramian, Marian Javorka
Life of this patent
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Abstract
Downhole tool assembly (10) for mounting to a core barrel assembly (12) including a core tube (14) and a pair of split tubes (16). The downhole tool assembly (10) includes a downhole tool (18) and at least one sleeve (20) dimensioned to slidingly engage the split tubes (16) to inhibit radial movement of the split tubes (16) and receive and retain the downhole tool (18) coaxially with the core tube (14). Core ejection pistons (72), and methods for extracting a core from bedrock are also disclosed. A housing assembly (120) for a downhole tool, downhole assemblies (180, 200), and methods of assembling such assemblies are also disclosed.
Claims24
1-54. (canceled)
A housing assembly for a downhole tool, the housing assembly including:
- a coupling adaptor having an uphole end defining a first engagement structure for engaging a component of a backend assembly, and an opposed downhole end defining a second engagement structure for engaging a core tube, the coupling adaptor further defining a bore extending between the ends and a plurality of protrusions extending radially into the bore;
- and
- a tool body having an uphole end, an opposed downhole end and a longitudinal axis extending between the ends, the tool body including a sealable cavity dimensioned to receive a payload, and defining a plurality of coupling channels, each coupling channel dimensioned to receive one of the protrusions, and each coupling channel defining a pair of axial channel portions extending parallel to the axis and spaced apart about the axis, and a joining channel portion extending circumferentially about the axis to join between the axial channel portions,
- whereby arranging the tool body within the bore of the coupling adaptor, and sliding each of the protrusions along each portion of one of the coupling channels, mounts the tool body to the coupling adaptor.
A housing assembly for a downhole tool, the housing assembly including:
- a coupling adaptor having an uphole end defining a first engagement structure for engaging a component of a backend assembly, and an opposed downhole end defining a second engagement structure for engaging a core tube, the coupling adaptor further defining a bore extending between the ends and a protrusion extending radially into the bore;
- and
- a tool body having an uphole end, an opposed downhole end and a longitudinal axis extending between the ends, the tool body including a sealable cavity dimensioned to receive a payload, and defining a coupling channel dimensioned to receive the protrusion, the coupling channel comprising a pair of axial channel portions extending parallel to the axis and spaced apart about the axis, and a joining channel portion extending circumferentially about the axis to join the axial channel portions,
- whereby arranging the tool body within the bore of the coupling adaptor, and sliding the protrusion along each portion of the coupling channel, mounts the tool body to the coupling adaptor.
A method of assembling a housing assembly for a downhole tool, the method including:
- arranging a tool body, carrying a payload, within a bore defined by a coupling adaptor to cause inserting at least one pin extending from the coupling adaptor into a complementary at least one coupling channel defined by the tool body;
- axially displacing the tool body relative to the adaptor to slide the at least one pin along a first portion of the at least one channel;
- rotating the tool body relative to the adaptor to slide the at least one pin along a second portion of the at least one channel;
- and
- axially displacing the tool body relative to the adaptor to slide the at least one pin along a third portion of the at least one channel to cause the tool body to be mounted to the coupling adaptor.
A kit for housing a downhole tool, the kit including:
- a plurality of coupling adaptors, each coupling adaptor having an uphole end defining a first engagement structure configured to engage a component of a backend assembly, and an opposed downhole end defining a second engagement structure configured to engage a specific core tube, each coupling adaptor further defining a bore extending between the ends and at least one protrusion extending radially into the bore;
- and
- a tool body having an uphole end, an opposed downhole end and a longitudinal axis extending between the ends, the tool body including a sealable cavity dimensioned to receive a payload, and defining a complementary at least one coupling channel, the, at least one coupling channel dimensioned to receive the at least one protrusion, the, or each coupling channel defining a pair of axial channel portions extending parallel to the axis and spaced apart about the axis, and a joining channel portion extending circumferentially about the axis to join the axial channel portions,
- whereby arranging the tool body within the bore of the coupling adaptor, and sliding the at least one protrusion along each portion of the at least one coupling channel, mounts the tool body to the coupling adaptor, and wherein each of the coupling adaptors are configured to engage a different core tube to allow mounting the tool body to a range of alternatively dimensioned core tubes.
Dependencies are inferred from the claim text.