US 9,810,031 B2
Coiled tubing optimized for long, horizontal completions
Neal A. Lux, The Woodlands, TX (US)
Assigned to Global Tubing LLC, Dayton, TX (US)
Filed by Global Tubing, LLC, Dayton, TX (US)
Filed on Sep. 14, 2016, as Appl. No. 15/264,912.
Application 15/264,912 is a continuation of application No. 13/611,512, filed on Sep. 12, 2012, granted, now 9,528,327.
Claims priority of provisional application 61/538,276, filed on Sep. 23, 2011.
Prior Publication US 2017/0002614 A1, Jan. 5, 2017
Int. Cl. E21B 17/20 (2006.01); F16L 13/02 (2006.01); B23K 9/00 (2006.01)
CPC E21B 17/20 (2013.01) [B23K 9/00 (2013.01); F16L 13/02 (2013.01)] 20 Claims
OG exemplary drawing
 
1. 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.