Vallourec & Mannesmann Oil & Gas France

Sumitomo Metal Industries, Inc.

Vallourec Drilling Products France

Vam Drilling France

Vallourec Tube-alloy, Llc.

Vallourec Oil and Gas France

Tuboscope Vetco (france) Sas

Nippon Steel Sumitomo Metal Corporation

Gabriel Roussie

Eric Verger

Thierry Noel

Didier David

Scott Granger

Emmanuel Varenne

Olivier Caron

Pierre Dutilleul

Gérard Leveau

Jacky Massaglia

Masaaki Sugino

Shigeo Nagasaku

Michihiko Iwamoto

Miyuki Yamamoto

Jean-Luc Coulon

Jonathan Franchi

Christophe Rohart

Francois Conrad

Francois Pineau

Marta Lafuente

Shigeo c/o Sumitomo Metal Industries Ltd Nagasaku

Miyuki c/o Sumitomo Metal Industries Ltd Yamamoto

Masaaki c/o Sumitomo Metal Industries Ltd Sugino

Michihiko c/o Sumitomo Metal Ind Ltd Iwamoto

François Pineau

An insulated tube including a main body and an end piece, the end piece being attached to the main body, the main body having an inner tube and an outer tube, a radial gap being arranged between the inner tube and the outer tube, one between the outer tube and the inner tube being a cold hardened steel alloy tube, said cold hardened steel alloy tube having a first threaded portion and the end piece having a second threaded portion, the first threaded portion and the second threaded portion being screwed together such that the end piece is attached to the cold hardened steel tube in a sealed manner thanks to the cooperation between said first threaded portion and second threaded portion.

High strength insulated tube

A metal tubular component adapted to be associated with at least one other metal tubular component to form a joint, said metal tubular component having a longitudinal axis, a body and at least one first axial end adjacent to the body, said first axial end being provided with a connector including a thread and an internal abutment surface, the metal tubular component further including a wall with an internal surface, said internal surface being coated with a layer of a thermally-insulating material, said layer of thermally-insulating material being covered by a liner, said liner having an axial portion extending along the longitudinal axis and a radial portion, said radial portion extending along the internal abutment surface.

Metal tubular component, tubular threaded joint comprising such a component and method of obtaining such a component

An insulated tubular assembly includes jointed insulated tubing segments, all with inner and outer tubes concentrically disposed about in order to define a vacuum annulus in between and closed at both ends by annular bridges. Insulated tubing segment are provided with either male or female threads to threadably engage and form a joint directly with each other or through a coupling jointed to adjacent insulated tubing segments. An insulating sleeve held around such joint includes a first tubular shell adapted to cover at least part of one insulated tubular segment and a second tubular shell overlapping either internally or externally part of the first tubular shell, such that the second tubular shell extends axially about the threaded joint from one annular bridge to the adjacent one, with high tolerances on lengths of the insulated tubing segment extension extending beyond their respective annular bridges.

Assembly with tightly controlled axial gap for threaded connector insulation on vacuum insulated tubing

Disclosed is a tubing component for the oil and gas industry. The tubing component includes an outer tube and an inner tube within the outer tube, said tubes being so configured to create a space between each other over a specified length. Each end of the inner tube is secured to the internal surface of the outer tube by a frustoconical fillet weld so that said space is leak-tight. The inner tube has a first internal diameter ID along a first length starting from each end of said tube, and a second, smaller internal diameter ID' along a second length beyond the first length. The tubing component further includes a protective metallic layer extending at least over the fillet weld. Also disclosed is a method for producing this tubing component.

Tubing component having a cladding of fillet weld, and method for producing a tubing component

A threaded connection for drilling or working hydrocarbon wells includes first and second tubular components with an axis of revolution, each including respective male and female ends. At least one of the male or female ends finishes in a terminal surface including a first abutment surface that can come into interfering contact when the connection is made against a second abutment surface provided on a shoulder produced on an opposing tubular component male or female end. At least one of the first and second abutment surfaces is hollowed out by a groove, defining an exterior abutment zone and an interior abutment zone. In the connection made state, the exterior and interior abutment zones are not coplanar, such that contact pressure of the interior abutment zone exerted in a vicinity of the groove is greater than or equal to a minimum value for contact pressure exerted in the exterior abutment zone.

Tubular component for boring and exploiting hydrocarbons wells and resultant threaded joint

A tubular component for a drill stem, for drilling a hole, the component including a first end section including a first threading, a second end section including a second threading, and a substantially tubular central section, a hole being provided in at least one of the first and second end sections, and a tensioner for a communications tube disposed in the hole, the tensioner operating by deformation of a regular section of the communications tube, the tensioner being disposed in a housing provided in at least the section, at a distance from the ends of the communications tube, the housing intersecting with the hole.

Tubular drill stem component and method for tensioning a communication tube mounted in said component

Tubular drill string component for drilling a hole with circulation of a drilling fluid around the component and in a direction going from a drill hole bottom to the surface. The component includes a first end including a female threading, a second end including a male threading, and a substantially tubular central zone. The component includes a communication tube arranged at least in the central zone and in contact with a bore of the central zone. A signal transmission cable is arranged in the tube. The communication tube includes a body formed from at least one metal strip arranged with an annular component. The body includes, in section along a plane passing through the axis of the tube, at least two axially elongated lengths, partially overlapping one another with an axial play selected to accommodate the maximum elastic deformation of the component under axial compressive and/or bending stress.

Tubular drill string component and corresponding drill string

A holding device insertable into a central bore of a drill string component, the central bore having a first diameter along at least part of a central portion of the drill string component and a second diameter proximate ends of the drill string component. The second diameter is lower than the first diameter. The holding device includes an elongated body forming at least partly a housing for a transmission line. The elongated body has transversal dimensions lower than the second diameter. A plurality of arcuate elements are arranged along the elongated body and distinct from and attached to the elongated body. The arcuate elements are elastically bendable so as to be able to move through the second diameter and have a largest chord greater than the first diameter in a free state so as to be able to expand within the first diameter once past the second diameter.

Holding device insertable into the central bore of a tubular drill string component, and corresponding tubular drill string component

A drill string element including a main pipe with connection ends and a protective mechanism for at least one wire. The protective mechanism extends within a central bore of the main pipe. The main pipe presents a first hole in one of the connection ends and a second hole in the other connection end, both holes communicating with the central bore. The protective mechanism includes a guide tube arranged for housing the wire, both ends of which being respectively disposed within the first hole and the second hole. A retaining mechanism is arranged in at least one of the first hole and the second hole for the respective end of the guide tube. The retaining mechanism is configured to prevent the respective end of the guide tube from moving relative to the one of the first hole and the second hole according to at least one longitudinal direction of the hole.

Wired drill pipe with improved configuration

The invention relates to a rotary drill stem component for exploration of a hydrocarbon well with drilling mud in movement around the component from a bottom of the well towards the surface. The drill can include a central tubular element having an axis of revolution and extended on either side respectively by a first and a second tool joint each respectively and successively including a first cylindrical portion connected to the tubular element, a second tapered portion, a third cylindrical portion with a radius greater than that of the tubular element. The drill can include a threaded end which can connect the component to another component, the component including a first shell provided with one or more functional zones, the first shell being mounted on one of the tool joints in a cohesive and removable manner.

Drill stem components and string of components

A tubular component of a drill stem comprises a first end including a first threading, a second end including a second threading, and a substantially tubular central zone, the component further comprising a device for electrical connection with another component, mounted on at least one of the ends, and a cable for the transmission of signals between the first end and the second end, connected to the connecting device, the connecting device including at least one conductor provided with an electrically insulated link portion and an electrical contact portion; a dielectric to isolate the insulated link portion; and an annular sealing surface defining a protected zone, said electrical contact portion being disposed in the protected zone, the annular sealing surface being disposed at the surface of the insulated link portion.

Tubular component having an electrically insulated link portion with a dielectric defining an annular sealing surface

A threaded tubular connection is provided. The connection includes a male tubular element provided with a male threaded portion and a female tubular element provided with a female threaded portion. The male threaded portion and the female threaded portion each include self-locking threads having a crest, a load flank, a stabbing flank and a root, a load flank lead of the self-locking threads being larger than a stabbing flank lead of the self-locking threads such that in a tightened position of the threaded tubular connection, the load flanks and the stabbing flanks of the male self-locking threads are engaged in tight contact with the load flanks and the stabbing flanks of the female self-locking threads. A transfer zone is axially disposed between the threaded portions and a free end of at least one of the tubular elements, while being axially spaced from the threaded portions.

Threaded tubular connection which is resistant to bending stresses

A pipe string component that connects an offshore platform with a sea bed is provided. The pipe string component includes a threaded tubular connection. The threaded tubular connection includes a male tubular element including a tapered male threading, and a female tubular element including a tapered female threading that cooperates with the male threading by makeup to produce a rigid mutual connection of the tubular elements with radial interference between radial load transfer zones of the threadings. The male and female threadings each have a load flank extending substantially perpendicularly to an axis of the male and female threadings. The radial load transfer zones are at a radial distance from envelopes of thread roots of the male and female threadings. The radial load transfer zones of the threadings comprise at least one surface substantially parallel to an axis of the connection.

Fatigue resistant pipe string component

A threaded joint for steel pipes comprises a pin () and a box (). The pin has male thread (), a sealing surface (), and a shoulder surface () located on the end face of the pin. Correspondingly, the box has female thread (), a sealing surface (), and a shoulder surface () which can mate or contact with the corresponding portions of the pin. The shoulder surface () of the pin () is provided at an end face of the pin. The sealing surface () of the pin () is located on a pipe end side near the male thread (). A a nose portion () is provided on the pin () between the sealing surface () and the shoulder surface (), the nose portion () being not in contact with a corresponding portion of the box ().

Threaded joint for steel pipes

A method to improve fatigue resistance of a threaded tubular connection. Radial interference between a male and female threading operates between stabbing flanks inclined at about 27&#xb0; with respect to an axis of the threadings, wherein mutual contacting surfaces are radially spaced from a root of the male threading, which is defined by a concave rounded portion.

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Valenciennes, France

Gabriel Roussie