Patent ID: 9476526
Filing Date: 2016-10-25
CPC Classification: E21B,F16L

Claim Text:
1. A hydrocarbon production device comprising: a production device housing; a port in the housing, the port having a larger diameter portion and a smaller diameter portion, the larger diameter portion having an axis and extending inward into the housing from an exterior of the housing to an outward facing shoulder, the smaller diameter portion extending inward from the outward facing shoulder; an annular fitting assembly having external fitting assembly threads secured to mating internal fitting assembly threads in the larger diameter portion; a passage extending axially through the fitting assembly; a first outer diameter seal located between an inner end of the fitting assembly and the outward facing shoulder, the first outer diameter seal being energized by an inward axial force on the first outer diameter seal in response to the external fitting assembly threads engaging the internal fitting assembly threads; a packing assembly in an annulus between the fitting assembly and an inner surface of the larger diameter portion of the port outward from the external fitting assembly threads; a packing gland having external packing gland threads that engage mating internal packing gland threads in the larger diameter portion outward from the internal fitting assembly threads, the packing gland having an inner end that engages and exerts an axial force on the packing assembly in response to securing the external packing gland threads to the internal packing gland threads, defining a redundant second outer diameter seal between the fitting assembly and the port; and a ball urged by a spring into sealing engagement with a seat in the passage, defining a first inner diameter seal.