Sealing pipe connection structures used in the petroleum industry
A sealing surface and threaded connection technology, applied in threaded connections, pipes/pipe joints/fittings, drill pipes, etc., can solve problems such as restrictions
Inactive Publication Date: 2011-11-30
VALLOUREC OIL & GAS FRANCE SAS +1
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Problems solved by technology
However, this solution has limitations when the pressure exceeds the maximum elastic deformation threshold allowed by the groove
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[0029] figure 1 The shown threaded pipe connection structure is a sealed threaded connection structure, which comprises a first tubular part and a second tubular part, the first tubular part and the second tubular part are provided with a corresponding male end 1 and a female end part 2. Both the male end part 1 and the female end part 2 each terminate in an end face 7 , 14 oriented transversely with respect to the connection axis 10 . The term "transversely oriented to the connection axis" means that the respective end face 7, 14 is not parallel to the connection axis but belongs to a plane intersecting the connection axis which forms an angle of less than 45 degrees with a normal to the connection axis. These end faces may be axial abutment faces intended to cooperate by abutting with corresponding surfaces to withstand the make-up torque formed during the tightening of the male end into the female end.
[0030] The male end 1 comprises a threaded area 3 on its outer circu...
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The invention concerns a sealed threaded connection comprising a first and a second tubular component, each being provided with a respective male end (1) and female end (2), the male end (1) comprising, on its outer peripheral surface, at least one threaded zone (3), and at least one sealing surface (5,11) and finishing in a terminal surface (7) which is orientated transversely to the axis (10) of the connection, the female end (2) comprising, on its inner peripheral surface, at least one threaded zone (4) cooperating with the threaded zone (3) of the male end (1) by make up, the threaded zones (3, 4) being inclined in accordance with a conical generatrix (20) forming an angle of taper alpha; with the axis (10) of the connection, at least one sealing surface (6, 12) being positioned so as to cooperate with the at least one sealing surface (5, 11) of the male end (1) along a radially interfering contact zone, and finishing in a terminal surface (8) which is transversely orientated with respect to the axis (10) of the connection, the tangent at the contact zone of the sealing surface (5, 6; 11, 12) being inclined along a line (30) forming an angle beta; with the axis (10) of the threaded connection, characterized in that the inclination defined by the conical generatrix (20) relative to the threaded zones (3, 4) is in a direction opposite to the inclination defined by the tangent (30) at the contact zone of the sealing surface (5, 6; 11, 12).
Description
technical field [0001] The present invention relates to a sealing threaded pipe connection structure under static stress such as axial tension, axial compression, bending, internal pressure or external pressure and combinations thereof. Background technique [0002] The sealed threaded pipe connection (hereinafter also referred to as connection) may be manufactured by connecting a male element at one end of a first tubular part with a female element at one end of a second tubular part, the first The tubular part may be, for example, a long-length tube, the second tubular part may be, for example, a long-length tube or a coupling, each of said elements being provided with a metal sealing surface and abutting radially against the metal sealing surface of the other element superior. [0003] The connecting structure is in particular used in the manufacture of sealed casing strings or tubing strings eg for hydrocarbon wells or for similar wells such as geothermal wells. [000...
Claims
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IPC IPC(8): F16L15/04E21B17/042
CPCF16L15/002
Inventor C·帕蒂罗O·塔塔尔
Owner VALLOUREC OIL & GAS FRANCE SAS