US 12,258,832 B2
Methods for wellhead workover
Ahmed Abdullah Al-Mousa, Doha (SA); Omar Saud Almuhaidib, Khobar (SA); and Omar M. Alhamid, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Jul. 13, 2023, as Appl. No. 18/351,922.
Prior Publication US 2025/0020038 A1, Jan. 16, 2025
Int. Cl. E21B 33/04 (2006.01); E21B 34/02 (2006.01)
CPC E21B 33/04 (2013.01) [E21B 34/025 (2020.05)] 9 Claims
OG exemplary drawing
 
1. A method comprising:
providing a wellhead comprising a first casing spool and an extended tubing spool disposed above the first casing spool, and a production tree comprising a wing valve disposed above the extended tubing spool;
decoupling the extended tubing spool from the wellhead;
coupling a replacement tubing spool and an additional casing spool below the replacement tubing spool to the wellhead replacing the extended tubing spool, a combined length of the replacement tubing spool and the additional casing spool being the same as a length of the extended tubing spool; and
maintaining a consistent vertical length between the first casing spool and the wing valve while replacing the extended tubing spool with the replacement tubing spool and the additional casing spool.