Coiled tubing optimized for long, horizontal completions
AssigneeGlobal Tubing LLC
InventorNeal A. Lux
Life of this patent
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Abstract
Coiled tubing optimized for long, horizontal completions is provided. The tubing comprises a body portion; at least two tapered portions, each tapered portion defining distal ends spaced apart from one another; and at least one bias weld portion. In some embodiments, the tapered portions are located between the body portion and the bias weld. The tubing has a weld thickness in the bias weld portion(s), a body thickness in the body portion, and a taper thickness in the tapered portions; generally, the thickness of the bias weld portion is greater than the body portion thickness. The wall thickness transitions from one end of each tapered portion to the other end of the same tapered portion.
Claims20
A method of forming a coiled tubing string, comprising:
- forming a first section of coiled tubing comprising a first body portion disposed between two first tapered portions, the first tapered portions defining two distal ends spaced apart from one another, wherein each distal end has a wall thickness greater than a wall thickness of the first body portion, and wherein the first body portion, the two first tapered portions, and the two distal ends have substantially the same outer diameter;
- forming a second section of coiled tubing comprising a second body portion disposed between two second tapered portions, the second tapered portions defining two distal ends spaced apart from one another, wherein each distal end has a wall thickness greater than a wall thickness of the second body portion, and wherein the second body portion, the two second tapered portions, and the two distal ends have substantially the same outer diameter;
- and
- welding one distal end of the first section to one distal end of the second section to form a coiled tubing string.
A method of forming a coiled tubing string, comprising:
- forming a first section of coiled tubing comprising a first body portion disposed between two first tapered portions, the first tapered portions having a wall that increases in thickness;
- and a first bias weld portion disposed at an end of one of the first tapered portions, wherein the length of the first body portion is longer than the length of the first bias weld portion, and wherein the first body portion, the two first tapered portions, and the first bias weld portion have substantially the same outer diameter;
- forming a second section of coiled tubing comprising a second body portion disposed between two second tapered portions, the second tapered portions having a wall that increases in thickness;
- and a second bias weld disposed at an end of one of the second tapered portions, and wherein the second body portion, the two second tapered portions, and the second bias weld portion have substantially the same outer diameter;
- and
- welding the first bias weld portion of the first section to the second bias weld portion of the second section to form a coiled tubing string.
Dependencies are inferred from the claim text.