E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 47/08 (2006.01) G01B 17/00 (2006.01)
Patent
CA 2133286
An apparatus and a method are provided for measuring the caliper of a borehole, and the standoff of a drilling tool from the walls of a borehole during a drilling operation. The apparatus includes three or more sensors, such as acoustic transducers arranged circumferentially around a downhole tool or drill collar. The transducers transmit ultrasonic signals to the borehole wall through the drilling fluid surrounding the drillstring and receive reflected signals back from the wall. Travel times for these signals are used to calculate standoff data for each transducer. The standoff measurements may be used to calculate the caliper of the borehole, the eccentricity of the tool in the borehole, and the angle of eccentricity with respect to the transducer position. The eccentricity and angle computations may be used to detect unusual movements of the drillstring in the borehole, such as sticking, banging, and whirling.
Company Halliburton
Moake Gordon
Norton Rose Or S.e.n.c.r.l. S.r.l./llp
LandOfFree
Apparatus and method for measuring a borehole does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Apparatus and method for measuring a borehole, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Apparatus and method for measuring a borehole will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1667083