WELLHEAD SEAL ASSEMBLY WITH LOCKDOWN AND SLOTTED ARRANGEMENT

• Main Authors: FORD, David Lawrence, ZHU, Baozhi, GADRE, Aniruddha D, MANSUKH, Mayur, PALLINI, Joseph W
• Format: Patent
• Language: English; French
• Published: 26.05.2017
• Subjects: EARTH DRILLING; EARTH DRILLING, e.g. DEEP DRILLING; FIXED CONSTRUCTIONS; MINING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS

A wellhead assembly has a casing hanger for supporting a string of casing, the casing hanger having an external upward-facing shoulder. A radially movable annular lockdown member is carried on the shoulder for movement between a retracted position while the casing hanger is being run and an expanded...