E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 43/12 (2006.01) E21B 37/06 (2006.01) E21B 41/02 (2006.01)
Patent
CA 2700698
An essentially cylindrical deadleg having a first cross sectional area at one end of said deadleg and a second cross sectional area, said first cross sectional area being smaller than said second cross sectional area.
L'invention concerne une branche morte essentiellement cylindrique ayant une première section transversale à une extrémité de ladite branche morte et une seconde section transversale, ladite première section transversale étant inférieure à ladite seconde section transversale.
Kinnari Keijo
Labes-Carrier Catherine
Lunde Knud
Marks & Clerk
Statoil Asa
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