Patent ID: 7642474
Filing Date: 2010-01-05
Classification: E21B,G01G

Abstract:
1. A device for the quantitative analysis of debris ( 12 ) produced during a drilling operation, equipped with means for the progressive collection of debris, means for the progressive weighing of the debris collected, means for the discharging of same and a structure for support of the device, said means for the collection of the debris comprising a conveyor belt ( 22 ) wound in the manner of track on at least two rollers ( 23 , 24 ), said support structure comprising a horizontal frame ( 28 ) and a substantially rectangular base ( 213 ) whereon said horizontal frame ( 28 ) is placed, characterise in that said means for the weighing of the debris comprise at least four sensing elements 214 ) positioned between said horizontal frame ( 28 ) and said base ( 213 ) in such a way to take a direct measurement of the weight force exerted on the conveyor belt ( 22 ), said device is provided with an hydraulic circuit for feeding pressurised water which supplies the nozzles ( 318 ) for washing said conveyor belt, removing the residues eventually attached on it that would otherwise affect the measured weight, and that said means for discharging the debris comprise at least one unit for actuation of the rollers.