E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/20 (2006.01) E21B 17/18 (2006.01) E21B 21/10 (2006.01) E21B 21/12 (2006.01)
Patent
CA 2615911
A dual tubing coiled tubing string, including methods of assembly, that includes an inner tubing (IT) sealed by a seal (SL) within at least an upper portion of an outer tubing (OT).
Altman Richard A.
Crabtree Alexander R.
Gavin William G.
Misselbrook John G.
Bj Services Company Canada
Sim & Mcburney
LandOfFree
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