Patent ID: 6253842
Filing Date: 2001-07-03
Classification: E21B

Abstract:
A well pipe string joint locator for use in a pipe string, said locator comprising:a housing having an upper end adapted for connection to a length of coiled tubing whereby the locator may be moved within the pipe string in response to movement of the coiled tubing, said housing defining a central opening therethrough and a transverse circulation port in communication with said central opening;a valve disposed in said housing for momentarily opening and closing said circulation port in response to a pressure differential between the coiled tubing and a well annulus outside said circulation port; andan electronic means disposed in said housing for detecting an increased mass of a pipe joint and generating a momentary electric output signal in response thereto and placing said valve in communication with the pressure in the coiled tubing in response to said signal such that said pressure differential is momentarily applied to said valve.