Nippon Steel Corporation

Vallourec Oil and Gas France

Anthony Foulogne

Pierre Bernard Martin

Alan Fothergill

Benoit Briane

Mickael Pusard

Malic Abdeddaim

Mickaël Pusard

Benoît Briane

Pierre Martin

Threaded tubular connection for the casing of hydrocarbon wells obtained by makeup of a male tool joint with a female tool joint, the connection includes in order from a free edge of the male tool joint: an inner metal-metal seal, a first threaded portion, an intermediate abutment, an intermediate metal-metal seal and a second threaded portion, the free edge being at a non-zero axial distance from the female tool joint, the threaded portions each comprising a helix equipped with a load flank, a thread crest, a stabbing flank, a thread root, such that a pitch of the load flank and a pitch of the stabbing flank of the first threaded portion, and respectively a pitch of the load flank and a pitch of the stabbing flank of the second threaded portion fulfil the following condition: SFLb1=LFLb1=SFLb2=LFLb2=SFLp1=SLFLp2=LFLp2.

Threaded connection for casing string of an oil well

A threaded tubular connection includes a box member having a female external thread, a female internal thread, and a female intermediate sealing surface between the female external thread and the female internal thread, and a pin member having a corresponding male external thread, a male internal thread, and a male intermediate sealing surface, such that male threads interlock by thread engagement with female threads, and intermediate sealing surfaces form an intermediate metal-to-metal seal when the threaded tubular connection is made up. The box member includes a minimal outer diameter at the intermediate metal-to-metal seal location, the minimal outer diameter being smaller than respectively an external and an internal outer diameter respectively being located above the female external thread and the female internal thread.

Threaded tubular connection for casing

Threaded tubular connection for the casing of hydrocarbon wells obtained by makeup of a male tool joint with a female tool joint, the connection comprising a threaded portion, such that the male and respectively female threaded portions each comprise a helix provided with a load flank, a thread crest, a stabbing flank, a thread root, such that a pitch of the load flank (LFLp, LFLb) and a pitch of the stabbing flank (SFLp, SFLb) fulfills the following condition: [Math 14] SF=LF=SFL=LFL=k, A tooth width (Wtp) of the male helix and a tooth width of the female helix (Wtb) are such that [Math 15] 50%<Wtp/Wtb<80% or [Math 16] 50%<Wtb/Wtp<80% and [Math 17] Wtp Wtb<k.

Threaded connection having a dissymmetrical helical profile

Threaded tubular connection comprising a tubular female end extending from a main body of a first tubular member, and a tubular male end extending from a main body of a second tubular member, such that the tubular female end comprises a machined outer cylindrical surface close to the female free end having a first outer diameter and a second machined outer cylindrical surface above a threaded portion of the female end, a second outer diameter of the second outer cylindrical surface being bigger than the first outer diameter.

Growing community of inventors

Boulogne-Billancourt, France

Anthony Foulogne