Threaded joint for pipes
AssigneeVallourec Mannesmann Oil & Gas France
InventorsThierry Noel, Bruno Cacciaguerra
Life of this patent
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Abstract
The invention pertains to a tubular threaded joint provided with a device opposed to over-screwing or unscrewing. The joint includes a male component (3) with an external threading (8) and a female component (2) with internal threading (6), these two components capable of being assembled with predetermined amount of torque. A female portion (7) arranged beyond the female threading (19) and a male portion (13) arranged beyond the male threading (12) provide between their internal surface (14) and external surface (15) an annular zone in which one part at least forms a calibrated zone (20) in which an adhesive ensures mechanical connection between the female portion (7) and the male portion (13). Use of the joint particularly for the oil and gas industry.
Claims22
Tubular threaded joint of the type which includes a male component provided with an external male threaded section, a female component provided with a female internal threaded section corresponding to the threading of the male component and means which allow one to assemble these two components at a predetermined amount of torque, the male component being screwed inside the female component at a predetermined torque characterized in that the female component will include downstream from its threading a female portion which is provided at its end on its internal wall with a female bearing surface, the male component including upstream from its threading a male portion corresponding to the female portion, this male portion being provided at its end on its external wall with a male bearing surface, the male bearing surface and the female bearing surface being in supporting contact on one another, the internal surface of the female portion included between the end of the female threading and the female bearing surface and the external surface of the male portion included between the end of the male threading and the male bearing surface which have geometries so that they constitute an annular zone, at least one part of the measured length of this zone along the axis of the joint of this zone forming a calibrated annular space in which an adhesive which fills at least a portion of the annular calibrated space, ensures mechanical connection between the female portion and the male portion;
- wherein said means which allow one to assemble the two components at a predetermined torque comprise at least one of A and B, wherein A is the threadings and wherein B is means independent of the threadings.
Dependencies are inferred from the claim text.