US 12,410,671 B1
Wellhead equipment for drilling
Dawei Gong, Shanghai (CN)
Assigned to Shanghai SUPWEE Co., Ltd., Shanghai (CN)
Filed by Shanghai SUPWEE Co., Ltd., Shanghai (CN)
Filed on Jun. 11, 2024, as Appl. No. 18/740,372.
Claims priority of application No. 202410592805.3 (CN), filed on May 13, 2024.
Int. Cl. E21B 33/035 (2006.01); E21B 33/043 (2006.01)
CPC E21B 33/035 (2013.01) [E21B 33/043 (2013.01)] 8 Claims
OG exemplary drawing
 
1. A wellhead equipment for drilling, comprising a wellhead, a conductor string, a guide base plate, a casing hanger, a first casing string and a locking ring,
wherein the guide base plate comprises a base plate body and a mounting cylinder fixedly arranged in a center of the base plate body, the wellhead penetrates through the mounting cylinder, a top end of the wellhead is positioned above the mounting cylinder and provided with an interface part, a bottom end of the wellhead is positioned below the mounting cylinder, the conductor string is positioned below the wellhead, a top end of the conductor string is fixedly connected and communicated with the bottom end of the wellhead, a support ring supports an outer wall of a part of the wellhead positioned in the mounting cylinder, the support ring is secured with the mounting cylinder, the casing hanger is secured in the wellhead, the first casing string is positioned below the casing hanger, and a top end of the first casing string is fixedly connected with a bottom end of the casing hanger,
wherein an annular clamping groove is formed in an outer wall of the mounting cylinder, the locking ring is configured for supporting the outer wall of the mounting cylinder, the locking ring is provided with a clamping part and a pressing part, the clamping part is capable of being embedded in the annular clamping groove, and the pressing part is configured for being pressed on a top step surface of the support ring.