US 12,252,956 B2
System and methods for a quick release collar in cementing casing strings
Dautmammet Rejepov, Abqaiq (SA); and Syed Muhammad Ali, Abqaiq (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Apr. 24, 2023, as Appl. No. 18/305,803.
Prior Publication US 2024/0352824 A1, Oct. 24, 2024
Int. Cl. E21B 33/14 (2006.01); E21B 17/046 (2006.01); E21B 17/06 (2006.01); E21B 33/04 (2006.01)
CPC E21B 33/14 (2013.01) [E21B 17/046 (2013.01); E21B 17/06 (2013.01); E21B 33/04 (2013.01)] 17 Claims
OG exemplary drawing
 
10. A method, comprising:
lowering a first tubular string into a wellbore, wherein a collar is coupled to a top end of the first tubular string;
performing a first cementing by circulating a first cement slurry through a first float shoe at a bottom end of the first tubular string and into a first annulus between the first tubular string and the wellbore;
lowering a second tubular string into the wellbore;
landing an outer ring of the second tubular string on an internal ring of the collar, wherein landing the outer ring on the internal ring comprises:
sitting a bottom surface of the outer ring flush against a top surface of the internal ring;
engaging a locking mechanism of the outer ring with a first hole of the internal ring; and
aligning holes of the outer ring with a second hole of the internal ring; and
performing a second cementing by circulating a second cement slurry through a second float shoe at a bottom end of the second tubular string and into a second annulus between the second tubular string and the wellbore.