US 12,259,068 B2
Threaded and coupled tubular connection incorporating a seal ring and method of make-up
Ryan Gholamreza Ghasemi, Houston, TX (US); Aaron Walsh, Houston, TX (US); and Stephen Harvey, Houston, TX (US)
Assigned to Hunting Energy Services, LLC, Houston, TX (US)
Filed by Hunting Energy Services, LLC, Houston, TX (US)
Filed on Aug. 16, 2023, as Appl. No. 18/450,752.
Prior Publication US 2025/0060058 A1, Feb. 20, 2025
Int. Cl. F16L 15/00 (2006.01); E21B 17/042 (2006.01)
CPC F16L 15/003 (2013.01) [E21B 17/042 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A threaded and coupled connection for oil field tubular goods, the connection comprising:
a cylindrical coupling member having an exterior, an interior defined by an internal diameter having a center point, and having opposing ends, the opposing ends each having internally threaded regions with internal threads which extend inwardly from each of the opposing ends toward the center point of the coupling member;
a pair of pipes having pipe pin ends with external threads provided on the pin ends so that each pipe pin end can be axially aligned and received within a respective opposing end of the coupling member with the pin end threads matingly engaging the internal threads of the coupling member;
wherein the cylindrical coupling member is provided with a mid-region of decreased internal diameter between the two opposing internally threaded regions, the region of decreased internal diameter forming an internal shoulder region integral with the coupling member, the internal shoulder region having oppositely arranged stepped end faces joined by a diametral mid-region which forms an exposed circumferential face region circumscribing the internal diameter of the mid-region of the coupling member, the circumferential face region having a centrally located groove which circumscribes the face region;
a resilient corrosion resistant seal ring having a circumferential exterior face and a circumferential interior face, the exterior face of the ring having a pair of oppositely arranged protruding end regions and a central protruding region which regions are arranged to mate with the oppositely arranged stepped end faces and centrally located groove, respectively, provided on the internal shoulder region of the cylindrical coupling member to receive the stepped faces and hold the ring on the shoulder region when the seal ring is compressed between the pin ends of the axially aligned pipes when the connection is made-up; and
wherein the connection has a desired, final make-up position, and wherein this final make-up position and amount of squeeze on the seal ring are controlled by utilizing a shoulder contact between the pin ends and the shoulder region of the coupling member.