Method and apparatus for testing oilfield tubular threaded...

G - Physics – 01 – M

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G01M 3/36 (2006.01)

Patent

CA 2188028

Equipment and techniques test the integrity of one or more seals within an oilfield tubular threaded connection. A test fixture may be utilized including three axially spaced sensors which are each responsive to radial deformation of an outer surface of an internally pressurized threaded connection. Excessive radial deformation indicates a failure of at least one of the threaded connection seals. A relatively simple yet highly reliable technique is provided for quickly and easily determining the sealing integrity of a threaded connection made up at a well site. If any one of the multiple seals fails during the test, the operator may either break out and re-test the connection, or may make up and test a new threaded connection. The present invention may be used for substantially increasing the integrity of oilfield tubular connections and thereby reducing the overall cost of hydrocarbon exploration and recover operations.

Procédé et dispositif permettant de vérifier l'état d'un ou plusieurs joints à l'intérieur d'un raccord fileté (12) de matériel tubulaire pour champs pétrolifères. On peut utiliser un dispositif de contrôle (74) comprenant trois détecteurs espacés axialement les uns des autres (92, 86 et 88), chacun étant sensible à la déformation radiale d'une surface externe (52) d'un raccord fileté sous pression intérieure (12). Une déformation radiale excessive indique le défaut d'au moins un des joints filetés (48, 54, 56,58). Une technique relativement simple et extrêmement fiable permet de déterminer rapidement et facilement l'état d'étanchéité d'un raccord fileté (12) réalisé sur un site de forage. Si l'un ou l'autre des joints multiples (48, 54, 56, 58) est défaillant pendant la vérification, le technicien peut soit ouvrir et recontrôler le raccord, soit réaliser et contrôler un nouveau raccord fileté (12). On peut utiliser l'invention pour améliorer sensiblement l'état de raccords de matériel tubulaire pour champs pétrolifères, ce qui limite les coûts de prospection et de récupération d'hydrocarbures.

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