US 12,071,829 B2
Wellhead adaptor for dual concentric tubing for well operations
Billy G. Becker, Ventura, CA (US); and David Charles Daniel, Missouri City, TX (US)
Assigned to DUCON—BECKER SERVICE TECHNOLOGY, LLC, Ventura, CA (US)
Filed by DUCON—BECKER SERVICE TECHNOLOGY, LLC., Ventura, CA (US)
Filed on Mar. 30, 2020, as Appl. No. 16/833,896.
Claims priority of provisional application 62/829,132, filed on Apr. 4, 2019.
Prior Publication US 2020/0318452 A1, Oct. 8, 2020
Int. Cl. E21B 33/038 (2006.01); E21B 17/18 (2006.01); E21B 43/12 (2006.01)
CPC E21B 33/038 (2013.01) [E21B 17/18 (2013.01); E21B 43/121 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A well system comprising:
a wellhead comprising an inclined upper face;
a wellhead adaptor comprising:
an inclined lower face configured to engage with the inclined upper face of the wellhead;
a first downstream end comprising a first set of threads;
an inner body comprising a first bore and a central longitudinal axis;
a second downstream end comprising a second set of threads; and
an outer body comprising a second bore with a central longitudinal axis that is substantially coaxial with the central longitudinal axis of the first bore, such that an annular space is formed between the inner body and the outer body.