E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 41/00 (2006.01) E21B 33/10 (2006.01)
Patent
CA 2409872
The present invention relates to downhole drilling operations, and more particularly, to the completion of lateral boreholes. Apparatus (100) is provided comprising a tubular liner portion (108) for lining a portion of a lateral borehole adjacent an opening of a borehole into the lateral borehole. An end portion of said tubular liner portion (108) is provided with a flange element (102) having a curved surface for locating in abutment with an area of main borehole surrounding said opening. A method of using said apparatus (100) is also provided.
La présente invention concerne des opérations de forage et, en particulier, la complétion de trous de forage latéraux. L'invention concerne également un appareil (100) comprenant une colonne perdue tubulaire (108) destiné à tuber une partie d'un trou de forage latéral adjacente à une ouverture d'un trou de forage principal dans le trou de forage latéral. Une extrémité de ladite colonne perdue tubulaire (108) est pourvue d'un rebord (102) comprenant une surface courbée destinée à être placée en butée avec une zone du trou de forage principal entourant ladite ouverture. L'invention concerne également un procédé d'utilisation dudit appareil (100).
Chadwick Robert Ian
Mcgarian Bruce
Taylor Gary Alexander
Bereskin & Parr Llp/s.e.n.c.r.l.,s.r.l.
Smith International Inc.
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