US 12,247,455 B2
Nested lock screw
Jacob Emmett, Houston, TX (US); and Bradley Jones, Pearland, TX (US)
Assigned to CACTUS WELLHEAD, LLC, Houston, TX (US)
Filed by CACTUS WELLHEAD, LLC, Houston, TX (US)
Filed on May 22, 2024, as Appl. No. 18/670,945.
Application 18/670,945 is a continuation of application No. 18/302,581, filed on Apr. 18, 2023, granted, now 12,012,818.
Claims priority of provisional application 63/334,112, filed on Apr. 23, 2022.
Prior Publication US 2024/0309720 A1, Sep. 19, 2024
Int. Cl. E21B 33/04 (2006.01); E21B 23/02 (2006.01); E21B 29/12 (2006.01); E21B 33/00 (2006.01); F16L 19/00 (2006.01)
CPC E21B 33/04 (2013.01) 19 Claims
OG exemplary drawing
 
1. A wellhead assembly, comprising:
a wellhead housing, wherein the wellhead housing comprises a first lock screw aperture;
an outer nested wellhead component configured to be disposed within the wellhead housing, wherein the outer nested wellhead component comprises a second lock screw aperture configured to align with the first lock screw aperture in the wellhead housing;
an inner nested wellhead component configured to be disposed within the outer nested wellhead component sequentially after the outer nested wellhead component is disposed within the wellhead housing, wherein the inner nested wellhead component comprises a lock screw receptacle configured to align with the first lock screw aperture in the wellhead housing and the second lock screw aperture in the outer nested wellhead component; and
a nested lock screw, wherein the nested lock screw comprises:
an outer sleeve, wherein the outer sleeve is configured to extend through the first lock screw aperture in the wellhead housing into the second lock screw aperture in the outer nested wellhead component to facilitate securing the outer nested wellhead component within the wellhead housing; and
an inner screw disposed within the outer sleeve, wherein the inner screw is configured to extend through the outer sleeve into the lock screw receptacle in the inner nested wellhead component to facilitate securing the inner nested wellhead component within the outer nested wellhead component and the wellhead housing.