Tenaris Coiled Tubes, LLC

Jorge Mitre

Martin Emiliano Valdez

Bruce Alan Reichert

Hugo Alejandro Ernst

Gonzalo Gomez

Marcelo Falcigno

Ricardo Schifini Gladchtein

Diego Javier Monterosso

Christian Alvarez Tagliabue

Sebastian Cravero

Martin Valdez

Bruce A Reichert

Martín Valdez

Embodiments of a method of heat treating a coiled tube, in particular coiled tubes for use in the oil and gas industry, and pipes produced from the methods. In particular, embodiments of the heat treating method can utilized tempering without bending in order to avoid the generation of subsequent defects.

Heat treated coiled tubing

Described herein are coiled tubes with improved and varying properties along the length that are produced by using a continuous and dynamic heat treatment process (CDHT). Coiled tubes can be uncoiled from a spool, subjected to a CDHT process, and coiled onto a spool. A CDHT process can produce a 'composite' tube such that properties of the tube along the length of the tube are selectively varied. For example, the properties of the tube can be selectively tailored along the length of the tube for particular application for which the tube will be used.

Method of forming and heat treating coiled tubing

Embodiments of the present disclosure are directed to coiled steel tubes and methods of manufacturing coiled steel tubes. In some embodiments, the final microstructures of the coiled steel tubes across all base metal regions, weld joints, and heat affected zones can be homogeneous. Further, the final microstructure of the coiled steel tube can be a mixture of tempered martensite and bainite.

High performance material for coiled tubing applications and the method of producing the same

A system includes a feeder configured to feed a continuous length of a tube at a predefined rate, a speed sensor configured to determine a feed rate of the continuous length of the tube, a first geometry sensor configured to determine one or more geometric dimensions of a portion of the continuous length of the tube, a first treatment station comprising a first entrance, a first exit, and a first heat treatment zone therebetween, the first heat treatment zone comprising at least one first zone heating element, and a controller configured to power the first zone heating element at a first heat treatment power level based on a first heat treatment target value, the feed rate, one or more of the geometric dimensions, and a first heating element value of the first zone heating element. The system may also include additional heat treatment and cooling stations.

Method and system for manufacturing coiled tubing

Coiled tube with varying mechanical properties for superior performance and methods to produce the same by a continuous heat treatment

A quenching tank system includes a cooling tank having an entrance opening adapted to allow a first portion of a heated continuous tube to enter the cooling tank and to allow a first portion of a cooling fluid in the tank to flow out the entrance opening. The cooling tank includes an exit opening adapted to allow a partially cooled second portion of the continuous tube moving through the tank to exit the cooling tank and to allow a second portion of the cooling fluid in the tank to flow out the exit opening. The system also includes a cooling fluid collection and distribution system adapted to collect cooling fluid flowing out of the cooling tank, return the collected cooling fluid to the cooling tank and distribute the cooling fluid in the cooling tank. A method of cooling a heated continuous tube using a quenching tank system is described.

Quenching tank system and method of use

The disclosed manufacture method for a length of tubing can produce a length of fatigue resistant tubing that has relatively high fatigue resistance and relatively low strip-to-strip welding length. The Fatigue resistance is calculated from experimental settings with controlled parameters and/or simulations reproducing similar material properties and loading conditions. A high fatigue resistance means certain product characteristics (e.g., low plasticization, low hydrostatic stress levels and free of imperfections welds) can be retained with an adequate bias weld design at low values after a specific test number of cyclic loading. The relatively low strip-to-strip welding length is an advantage for reducing probabilities of having cracks initiated and/or propagated at weld locations, where imperfections and localized differences of mechanical properties commonly cause failure. Low strip-to-strip welding length can also reduce the costs for welding.

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Houston, TX, United States of America

Jorge Mitre