E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 49/00 (2006.01) E21B 23/14 (2006.01) E21B 49/10 (2006.01)
Patent
CA 2364271
A hydraulic strain sensor (16) for use with a downhole tool on a slickline, wireline, coiled tubing or drill string pipe type of conveyance device includes a housing having two chambers (38, 40) with a pressure differential between the two chambers. A mandrel (30), piston (34) and cylinder (26) is disposed in the housing, such mandrel being adapted for coupling to the tool so that the weight of the tool is supported by the pressure differential between the two chambers. A pressure- responsive sensor (54) in communication with one of the sealed chambers is provided to sense pressure changes in the chamber as the tool is accelerated or decelerated downhole along a borehole or wellbore and to generate signals representative of the pressure changes occuring in the chambers.
L'invention concerne un détecteur (16) de contrainte hydraulique combiné à un outil de forage descendant comprenant un boîtier à deux chambres (38, 40) entre lesquelles existe une différence de pression. Un mandrin (30), un piston (34) et un cylindre (26) sont disposés dans le boîtier. Le mandrin sert à coupler l'outil de sorte que le poids de ce dernier soit supporté par la différence de pression entre les deux chambres. Un détecteur (54) sensible à la pression en communication avec l'une des chambres sert à détecter les variations de pression subies dans la chambre à mesure que l'outil accélère ou ralentit et à générer des signaux indiquant les variations de pression.
Hansen Merlin D.
Sweetland Matthew
Schlumberger Canada Limited
Schlumberger Technology Corporation
Smart & Biggar
LandOfFree
Hydraulic strain sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Hydraulic strain sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Hydraulic strain sensor will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1668939