Sub for accommodating large devices
AssigneeHalliburton Energy Services, Inc.
InventorsRobert J. Cull, Stephen Daniel Lloyd, David James Laban
Life of this patent
Estimating the term…
Abstract
A sub, downhole tool, and method for manufacturing thereof, are disclosed. The sub may include one or more flow channels, each of which may be defined in part by a longitudinal groove formed along an exterior of a collar. One or more flow channel cover may be connected to the collar. The longitudinal grooves position the flow channels further outward to provide more volume within the collar that may be used for housing one or more devices. Upper and lower blind bores are fluidly coupled to the longitudinal grooves by angled through bores to complete the flow channels. A medial bore, which may be fluidly isolated from the flow channels, may be provided to house a device, such as an instrument, detector, or circuitry.
Claims26
A sub, comprising:
- a collar, said collar defining a longitudinal sub axis;
- an upper blind bore formed along said sub axis at said upper end of said collar;
- a lower blind bore formed along said sub axis at said lower end of said collar;
- a medial bore formed within said collar;
- a longitudinal first groove formed along an exterior of said collar;
- a first upper angled through bore formed between an upper end of said first groove and said upper blind bore;
- a first lower angled through bore formed between a lower end of said first groove and said lower blind bore;
- a first cover disposed over said first groove and connected to said collar;
- a longitudinal second groove formed along said exterior;
- a second upper angled through bore formed between an upper end of said second groove and said upper blind bore;
- a second lower angled through bore formed between a lower end of said second groove and said lower blind bore;
- and
- a second cover disposed over said second groove and connected to said collar;
- whereby
- said upper blind bore is in fluid communication with said lower blind bore via said first and second upper angled through bores, said first and second grooves, and said first and second lower angled through bores.
A downhole tool, comprising:
- a collar, said collar defining a longitudinal sub axis;
- an upper blind bore formed along said sub axis at said upper end of said collar;
- a lower blind bore formed along said sub axis at said lower end of said collar;
- a medial bore formed within an interior of said collar;
- a longitudinal first groove formed along an exterior of said collar;
- a first upper angled through bore formed between an upper end of said first groove and said upper blind bore;
- a first lower angled through bore formed between a lower end of said first groove and said lower blind bore;
- and
- a first cover disposed over said first groove and connected to said collar;
- and
- a device disposed within said medial bore;
- wherein
- said upper blind bore is in fluid communication with said lower blind bore via said first upper angled bore, said first groove, and said first lower angled bore;
- and
- said medial bore is fluidly isolated from both of said upper and lower blind bores.
A method for manufacturing a sub, comprising:
- forming a collar by
- providing a bar, said bar defining a sub axis,
- forming an upper blind bore along said sub axis at an upper end of said bar,
- forming a lower blind bore along said sub axis at a lower end of said bar,
- forming a medial bore within said bar,
- forming a longitudinal first groove along an exterior of said bar,
- forming a first upper angled through bore between an upper end of said first groove and said upper blind bore,
- forming a first lower angled through bore between a lower end of said first groove and said lower blind bore,
- forming a longitudinal second groove along said exterior,
- forming a second upper angled through bore between an upper end of said second groove and said upper blind bore, and
- forming a second lower angled through bore between a lower end of said second groove and said lower blind bore;
- covering said first groove with a first cover;
- connecting said first cover to said collar;
- covering said second groove with a second cover;
- and
- connecting said second cover to said collar.
Dependencies are inferred from the claim text.