US 12,422,065 B1
Formed internal surface tubular connection
Preston Cothren, The Woodlands, TX (US); and Maya Marchant, Spicewood, TX (US)
Assigned to BENOIT PREMIUM THREADING, LLC, Houma, LA (US)
Filed by BENOIT PREMIUM THREADING, LLC, Houma, LA (US)
Filed on Dec. 13, 2023, as Appl. No. 18/538,646.
Claims priority of provisional application 63/387,226, filed on Dec. 13, 2022.
Int. Cl. F16L 15/00 (2006.01); F16L 15/04 (2006.01); E21B 17/042 (2006.01)
CPC F16L 15/001 (2013.01) [F16L 15/04 (2013.01); E21B 17/042 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A tubular connection apparatus, comprising:
a) a pin tubular section having a pin face, external tapered threads, a pin external shoulder and an internal surface having a first diameter and a second diameter;
b) a box tubular section having internal tapered threads and a box external shoulder;
c) wherein the pin external shoulder and the box external shoulder mate on the connection having the first diameter upon assembly of the pin tubular section to the box tubular section;
d) wherein the external tapered threads and the internal tapered threads mate and are fully contained on the connection having the second diameter upon assembly of the pin tubular section to the box tubular section;
e) wherein the pin internal surface has a transition region having an angle between the first diameter and the second diameter; and
f) further comprising a pin internal shoulder mated with a box internal shoulder.