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1. WO2013153126 - TENSION METER FOR MEASURING A MECHANICAL TENSION ALONG A LONGITUDINAL DIRECTION IN A WELL AND RELATED SUBASSEMBLY AND METHOD

Publication Number WO/2013/153126
Publication Date 17.10.2013
International Application No. PCT/EP2013/057508
International Filing Date 10.04.2013
IPC
G01L 5/04 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
04for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
G01L 1/02 2006.01
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1Measuring force or stress, in general
02by hydraulic or pneumatic means
CPC
G01L 1/02
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
1Measuring force or stress, in general
02by hydraulic or pneumatic means
G01L 5/04
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
04for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
G01L 5/06
GPHYSICS
01MEASURING; TESTING
LMEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
5Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
04for measuring tension in flexible members, e.g. ropes, cables, wires, threads, belts or bands
06using mechanical means
G01N 2203/0048
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
003Generation of the force
0042Pneumatic or hydraulic means
0048Hydraulic means
G01N 2203/0232
GPHYSICS
01MEASURING; TESTING
NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
2203Investigating strength properties of solid materials by application of mechanical stress
02Details not specific for a particular testing method
022Environment of the test
023Pressure
0232High pressure
Applicants
  • GEOSERVICES EQUIPEMENTS [FR]/[FR]
Inventors
  • MICHAUD, Christophe
  • CHATELET, Vincent
Agents
  • RZANIAK, Marcin
Priority Data
12163534.610.04.2012EP
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) TENSION METER FOR MEASURING A MECHANICAL TENSION ALONG A LONGITUDINAL DIRECTION IN A WELL AND RELATED SUBASSEMBLY AND METHOD
(FR) TENSIOMÈTRE DESTINÉ À MESURER UNE TENSION MÉCANIQUE LE LONG D'UNE DIRECTION LONGITUDINALE DANS UN PUITS DE FORAGE AINSI QUE SOUS-ENSEMBLE ET PROCÉDÉS ASSOCIÉS
Abstract
(EN)
Tension meter (82) for measuring a mechanical tension (F1) along a longitudinal direction (L) between a first element (84) and a second element (80) deployed in a well containing a fluid (50) having a fluid pressure, the tension meter comprising: - a bar (108) comprising a first portion (152), a second portion (154), and a measurement portion (156), and - a hollow member (110) defining a first chamber (169) surrounding the measurement portion, the bar being free to expand within the hollow member under the mechanical tension (F1 ) to be measured. The measurement portion includes at least one strain gauge (172). The tension meter includes first sealing elements for keeping the first chamber at a first chamber pressure, the measurement portion being subject to a compression force (F2) due to a difference between the fluid pressure and the first chamber pressure. The tension meter includes means for converting the fluid pressure into a traction force (F3) applied on the second portion (154), wherein the compression force (F2) and the traction force (F3) compensate. Related subassembly and method.
(FR)
La présente invention se rapporte à un tensiomètre (82) destiné à mesurer une tension mécanique (F1) le long d'une direction longitudinale (L) entre un premier élément (84) et un second élément (80) déployés dans un puits de forage qui contient un fluide (50) qui présente une pression de fluide, le tensiomètre comprenant : une barre (108) qui comprend une première partie (152), une seconde partie (154) et une partie de mesure (156) ; ainsi qu'un élément creux (110) qui définit une première chambre (169) qui entoure la partie de mesure, la barre pouvant s'étendre dans l'élément creux sous l'effet de la tension mécanique (F1) qui doit être mesurée. La partie de mesure comprend au moins un extensomètre (172). Le tensiomètre comprend des premiers éléments d'étanchéité destinés à garder la première chambre à une pression de première chambre, la partie de mesure étant soumise à une force de compression (F2) due à une différence entre la pression de fluide et la pression de la première chambre. Le tensiomètre comprend des moyens destinés à convertir la pression de fluide en une force de traction (F3) appliquée sur la seconde partie (154), la force de compression (F2) et la force de traction (F3) se compensant. La présente invention se rapporte également à un sous-ensemble et à un procédé associés.
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