Method and apparatus for transmitting information to the...

H - Electricity – 04 – B

Patent

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

H04B 11/00 (2006.01) E21B 47/18 (2006.01)

Patent

CA 2423661

A method and apparatus for transmitting information to the surface from down hole in a well in which a pulser (12) is incorporated into the bottom hole assembly of a drill string that generates pressure pulses (112) encoded to contain information concerning the drilling operation. The pressure pulses (112) travel to the surface where they are decoded so as to decipher the information. The pulser (12) includes a stator (38) forming passages through which drilling fluid flows on its way to the drill bit. The rotor (36) has blades that obstruct the flow of drilling fluid through the passages when the rotor (36) is rotated into a first orientation and that relieve the obstruction when rotated into a second orientation, so that oscillation of the rotor (36) generates the encoded pressure pulses (112). An electric motor (32), under the operation of a controller (26), drives a drive train that oscillates the rotor (36) between the first and second orientations. The controller (26) may receive instructions for controlling the pressure pulses characteristic from the surface by means of encoded pressure pulses transmitted to the pulser (12) from the surface that are sensed by the pressure sensor (29) and decoded by the controller (26).

L'invention concerne un procédé et un appareil permettant de communiquer des informations à la surface à partir du fond d'un puits dans lequel un pulseur (12) est incorporé dans l'ensemble fond de trou d'un train de forage qui produit des impulsions (112) de pression codées renfermant des informations concernant l'opération de forage. Lesdites impulsions (112) voyagent vers la surface où elles sont décodées et lesdites informations sont déchiffrées. Le pulseur (12) comprend un stator (38) formant des passages traversés par le liquide de forage s'écoulant en direction du trépan. Le rotor (36) est muni de lames qui gênent l'écoulement du liquide de forage à travers les passages lorsque le rotor (36) tourne dans une première orientation et dégage l'obstruction lorsqu'il est dans une seconde orientation, l'oscillation du rotor (36) produisant ainsi les impulsions (112) de pression codées. Un moteur électrique (32), dépendant du fonctionnement d'un régulateur (26), entraîne un train d'entraînement qui fait osciller le rotor (36) entre la première et la seconde orientations. Le régulateur (26) peut recevoir des instructions destinées à réguler la caractéristique des impulsions de pression depuis la surface par des impulsions de pression codées communiquées au pulseur (12) depuis la surface qui sont captées par le capteur (29) de pression et décodées par le régulateur (26).

LandOfFree

Say what you really think

Search LandOfFree.com for Canadian inventors and patents. Rate them and share your experience with other people.

Rating

Method and apparatus for transmitting information to the... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for transmitting information to the..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for transmitting information to the... will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFCA-PAI-O-2032347

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.