E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/16 (2006.01) B21D 26/08 (2006.01) E21B 17/00 (2006.01) E21B 17/22 (2006.01) B21D 26/02 (2006.01)
Patent
CA 2425425
A drill string member to at least alleviate one of differential sticking and to facilitate the transport of cuttings in at least one of a high angle and horizontal well bore is disclosed. The drill string member includes a single tubular member formed to have a portion with a non-circular internal and external cross section and opposing end portions of the non-circular portion having a substantially circular cross section, wherein the non-circular portion has undulating inner and outer surfaces with crests and troughs extending across a longitudinal axis of said single tubular member and a substantially constant wall thickness about the circumference thereof. Tool joints are secured by friction welding to the circular end portions. The tubular member has a circular cross-sectioned portion provided between the non-circular portion and the upper tool joint to form an elevator and slip recess.
L'invention concerne un élément de train de tige de forage constitué d'un support (2) et d'un élément cylindrique (1) devant être modelé par rapport au support. Des joints (20) sont placés entre des extrémités opposées d'un cylindre à paroi épaisse (3) et l'élément cylindrique, une pression est appliquée dans l'espace annulaire (4) entre l'élément cylindrique et le cylindre à paroi épaisse, laquelle pression est suffisante pour déformer l'élément cylindrique contre le support. L'élément de train de tiges de forage ainsi formé possède une épaisseur de paroi constante et un support non circulaire forme un élément de train de tiges de forage non circulaire.
Gowling Lafleur Henderson Llp
Springer Johann
LandOfFree
Drill string member does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drill string member, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill string member will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1388510