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US 2013/0076025 A1Published application
Threaded end connector attachment for an end of a tube
AssigneeRRI Holdings, Inc.
InventorsTommie C. Gipson, Larry R. Russell
Life of this patent
Estimating the term…
Abstract
A simple threaded end connector is easily attached to the end of a tube. One embodiment of the threaded end connector attaches to the end of a coiled tubing string so to allow the coiled tubing string to easily connect to a variety of threaded downhole tools
Claims19
A threaded tubing end assembly comprising:
- a) a tubing having
- a transverse first end,
- a tubing through bore,
- a longitudinal weld seam internally extending into the tubing through bore, and
- a through slot extending axially from the first end to a predetermined length, wherein the through slot is located in a side of the tubing opposed to the weld seam;
- b) a threaded adapter having
- an adapter through bore, and
- an adapter body having
- a threaded first end, and
- an opposed second end with an external transverse shoulder surrounding a reduced diameter elongated shank extending from the second end, wherein the elongated shank has an external longitudinal slot sized to accommodate the internally extending weld seam of the tubing;
- c) a circumferential weld sealingly connecting the first end of the tubing to the transverse external shoulder of the threaded adapter, when the tubing through bore is positioned around the shank of the adapter so that the first end of the tubing abuts the transverse external shoulder of the adapter and the tubing weld seam is accommodated in the longitudinal slot of the adapter;
- and
- d) a longitudinal weld filling the axially extending through slot of the tubing and providing a structural connection between the tubing and the elongated shank.
10 more elements
A threaded tubing end assembly comprising:
- a) a tubing having
- (i) a transverse first end with an internal chamfer,
- (ii) a tubing through bore,
- (iii) a weld seam internally extending into the tubing through bore, and
- (iv) a through slot extending axially from the first end of the tubing to a predetermined length, wherein the through slot is located in a side of the tubing opposite the weld seam;
- b) a threaded adapter having
- (i) an adapter through bore, and
- (ii) an adapter body having
- a threaded first end with a first transverse external shoulder,
- an opposed second end having a second transverse external shoulder and a reduced diameter elongated shank attached to the second end, wherein the shank has an external longitudinal slot extending an entire length of the shank and sized to accommodate the internally extending weld seam of the tubing, and wherein the elongated shank has a substantially constant external diameter sized to be a close fit with the tubing through bore when the tubing weld seam is accommodated in the longitudinal slot;
- c) a circumferential weld sealingly connecting the first end of the tubing to the second transverse external shoulder of the adapter body, when the tubing through bore is positioned around the elongated shank of the adapter so that the first end of the tubing abuts the second transverse external shoulder of the adapter body and the tubing weld seam is accommodated in the longitudinal slot of the elongated shank;
- and
- d) a longitudinal weld filling the axially extending through slot of the tubing and providing a structural connection between the tubing and the elongated shank on a side of the shank opposite the longitudinal slot.
10 more elements
A method for attaching a threaded adapter to a tube comprising the steps of:
- (a) cutting a through slot through a first side of a tube opposite a weld bead that protrudes into a through bore of the tube, wherein the through slot axially extends from a transverse end of the tube for a predetermined length;
- (b) aligning the tube weld bead with an external longitudinal slot that extends along one side of an elongated shank of a threaded adapter;
- (c) sliding the transverse end of the tube over the elongated shank of the threaded adapter so that the transverse end of the tube abuts a transverse shoulder of the threaded adapter and the tube weld bead is positioned within the shank longitudinal slot, wherein the transverse shoulder surrounds an interior end of the elongated shank;
- (d) connecting the transverse end of the tube to the transverse shoulder of the adapter with a circumferential weld;
- and
- (e) connecting the shank of the threaded adapter to a side of the tube opposite the tube weld bead with a longitudinal weld filling the axially extending through slot.
3 more elements
A method for attaching a threaded adapter to a tube comprising the steps of:
- (a) obtaining a threaded adapter having an adapter through bore, and an adapter body having a threaded first end, an opposed second end with a reduced diameter elongated shank attached to the second end and a transverse external shoulder surrounding the shank on the second end, wherein the shank has an external longitudinal slot extending a length of the shank;
- (b) preparing an outer tubing end of a coiled tubing string by providing a transverse end of the outer tubing end and cutting an axially extending through slot for a predetermined length through a first side of the outer tubing end opposite a weld bead that protrudes into a through bore of the coiled tubing;
- (b) aligning the tube weld bead with the external longitudinal slot that extends along one side of the elongated shank of the threaded adapter;
- (c) sliding a tubing through bore along the length of the elongated shank of the threaded adapter so that the transverse end of the tubing abuts the transverse shoulder of the threaded adapter and the tube weld bead is positioned within the shank longitudinal slot;
- (d) connecting the transverse end of the tube to the transverse shoulder of the adapter with a circumferential weld;
- and
- (e) connecting the shank of the threaded adapter to a side of the tube opposite the tube weld bead with a longitudinal weld filling the axially extending through slot.
4 more elements
Dependencies are inferred from the claim text.