Vetco Gray Inc.

Nuovo Pignone Srl

Vinh K Do

Joseph William Pallini, Jr

Jeffrey Allen Raynal

Kevin Edward O'Dell

Carlos Alfredo Trevino

Tomasz Tomaszewski

Jr Joseph William Pallini

A pressure packing for a piston rod of a reciprocating compressor includes a case having a piston rod through bore. A compartment within the case is coincident with the through bore and the compartment has an axial length at least as long as a stroke of the piston rod.

Reciprocating compressor, pressure packing, and method

A tubular connector connects two tubulars of a string of tubular members. The tubular connector has a pin end tubular member having an axis and a pin end. A pin end flange is positioned on an outer diameter of the pin end and has an undercut adjacent the union of the pin end flange with the pin end. The tubular connector also has a box end tubular member having a box end. A box end shoulder is adjacent the union of the box end with the box end tubular member. The box end shoulder has an undercut thereon. The pin end is secured to the box end so that the pin end tubular member and the box end tubular member are joined, stresses applied to the pin end tubular member and the box end tubular member are distributed through the undercuts.

Elliptical undercut shoulder for specialty pipe connections

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Oklahoma City, OK, United States of America

Vinh K Do