Coiled tubing joint locator and methods

Details Coiled tubing joint locator and methods Coiled tubing joint locator and methods

E - Fixed Constructions

21

B

E21B 47/09 (2006.01)

Patent

CA 2197950

A well pipe string joint locator for attachment to the end of a length of coiled tubing and moved within the pipe string as the coiled tubing is lowered or raised therein is provided as well as methods of using the joint locator. The joint locator is comprised of an elongated tubular housing having a longitudinal fluid flow passageway therethrough and having at least one lateral port extending through a side thereof. Electronic means are disposed within the housing for detecting the increased mass of a pipe joint as said locator is moved through the joint and generating a momentary electric output signal in response thereto. Valve means are disposed within the housing responsive to the electric signal for momentarily opening or closing the lateral port of the housing to thereby create a surface detectible pressure drop or rise.

Dispositif et méthodes pour localiser les joints de trains de tubes dans un puits. Le dispositif de localisation s'attache à l'extrémité d'une longueur de tube d'intervention enroulé et se déplace à l'intérieur du train de tubes lorsque le tube d'intervention est abaissé ou élevé à l'intérieur. Il est constitué d'un boîtier tubulaire allongé comportant un passage longitudinal pour l'écoulement de fluides et percé d'au moins un orifice latéral. Des moyens électroniques sont disposés à l'intérieur du boîtier pour détecter la masse accrue d'un joint lorsque le dispositif de localisation est déplacé dans celui-ci, et générer alors un signal électrique momentané. Des mécanismes à soupapes, à l'intérieur du boîtier, répondent au signal électrique en ouvrant et fermant momentanément l'orifice du boîtier pour créer une baisse ou une hausse de pression détectable en surface.

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