Tenaris Connections Ag

Tenaris Connections B.v.

Siderca S.a.i.c.

Rita Genoveva Toscano

Gabriel Eduardo Carcagno

Gabriel E Carcagno

Giuseppe Della Pina

Tommaso Coppola

Tatsuo Ono

Hisao Nakamura

Tatuso Ono

Nicolás Héctor Mario Di Toro

Antonio Podrini

Nicolas Hector Toro

A sucker rod connection is disclosed. The sucker rod connection comprises a tapered male member including a plurality of trapezoidal threads, and, a tapered female member also including a plurality of trapezoidal threads, in which the male member is capable of being received in threaded engagement with the female member, wherein the threads of the male member are in flank-to-flank contact, both flanks on each thread, with the threads of the female member, thereby creating diametrical interference between the male and female members preventing disengagement and substantially reducing axial interference between the male and female members.

Sucker rod connection with improved fatigue resistance, formed by applying diametrical interference to reduce axial interference

A threaded tube joint for oil extraction industry has a trapezoidal thread and a toroidal sealing surface () placed at its end near the thread and engages, for sealing, a corresponding frusto-conical sealing surface () wherein the toroidal sealing surface () has a radius Rs value comprised within the range given by the formula 

Threaded tube joint

Threaded pipe joint comprising a male element () and a female element (), threaded and provided with respective complementary sealing surfaces, which define, when screwed together, a notch () formed on the female element () of a predetermined length (X), and a space () between the threads of predetermined section (S), forming reservoir to house the joint lubricant, which comes out of the volume between the threads of the female () and male () elements during the tightening of the joint.

Threaded pipe joint

Threaded joint for pipes consisting of a male member () and a female member (), which are provided on the outer and inner surfaces respectively with two threading portions presenting a lead-in flank &#x3b2; such that 10&#xb0;&#x2266;&#x3b2;&#x2266;25&#xb0;, an abutment surface () being present at the end of said male member for abutment to a corresponding annular abutment surface () of the female member. The lead-in flanks of the male () and the female () members, upon make-up and with unloaded joint leave a gap (in the direction parallel to the axis () of the joint) varying from 0.01 to 0.12 mm. The internal and external diameters Dand D(of the pipe portion not involved in the coupling with the female member) of said male member, the inner and outer diameters Dand Dof the abutment surface of the female member are linked by the relationship: (D&#x2212;D)/(D&#x2212;D)&#x2267;0.5.

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Buenos Aires, Argentina

Rita Genoveva Toscano