Coiled tubing system
AssigneeParadigm Flow Services Limited
InventorsRobert Bain, Hugh MacKenzie
Life of this patent
Estimating the term…
Abstract
A coiled tubing system (10) for use in deploying a tubing string (12) into a conduit (14) comprises the tubing string (12) and a fluid discharge apparatus (26) disposed at a distal end of the tubing string (12). The tubing string (12) includes a first tubing portion (28) comprising composite coiled tubing and a second tubing portion (30) comprising metallic coiled tubing. The system (10) is configured to deploy the tubing string (12) and the fluid discharge apparatus (26) into the conduit (14), the fluid discharge apparatus (26) operable to generate pressure pulses which facilitate transport of the tubing string (12) further along the conduit 14.
Claims17
A coiled tubing system for deployment into a conduit, comprising:
- a tubing string comprising a first tubing portion and a second tubing portion configured for coupling to a proximal end of the first tubing portion, the first tubing portion comprising composite coiled tubing and the second tubing portion comprising formed of metal piping;
- and
- a fluid discharge apparatus configured for location at a distal end of the tubing string, the fluid discharge apparatus comprising:
- a body comprising an axial flow passage configured for fluid communication with an axial flow passage of the tubing string;
- a lateral flow passage disposed through the body;
- and
- a valve arrangement,
- wherein the fluid discharge apparatus is configured to move between a first configuration in which the valve arrangement obturates fluid communication through the lateral flow passage and a second configuration in which the valve arrangement permits fluid in the axial flow passage to be discharged through the lateral flow passage, said discharge generating a pressure pulse which facilitates transport of the tubing string along the conduit.
Dependencies are inferred from the claim text.