US 12,421,799 B2
Whipstock to plug and abandon wellbore below setting depth
Ahmed Abdulaziz Al-Mousa, Dhahran (SA); Hassan K. Al-Aswad, Qatif (SA); and Omar M. Al Hamid, Dammam (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on May 17, 2024, as Appl. No. 18/667,229.
Application 18/667,229 is a division of application No. 17/751,987, filed on May 24, 2022, granted, now 12,018,565.
Prior Publication US 2024/0301754 A1, Sep. 12, 2024
Int. Cl. E21B 7/06 (2006.01); E21B 23/06 (2006.01); E21B 33/14 (2006.01)
CPC E21B 7/061 (2013.01) [E21B 23/06 (2013.01); E21B 33/14 (2013.01)] 6 Claims
OG exemplary drawing
 
1. A method comprising:
lowering a wellbore tool assembly into a primary wellbore formed in a subterranean zone, wherein the wellbore tool assembly is lowered to a depth from which a lateral wellbore is to be formed from the primary wellbore, wherein the wellbore tool assembly comprises:
a whipstock assembly configured to drill the lateral wellbore, wherein the whipstock assembly comprises a milling assembly and a whipstock tool face connected to the milling assembly, wherein the whipstock tool face is at a downhole end of the whipstock assembly; and
a tool assembly connected to the whipstock assembly, wherein the tool assembly comprises:
a cement sub mounted to a downhole end of the tool assembly such that the cement sub is at the downhole end of the tool assembly, and
a first packer which when set is configured to isolate the primary wellbore downhole of the first packer, wherein the first packer is between the cement sub at the downhole end of the tool assembly and the downhole end of the whipstock tool face,
wherein the tool assembly is mounted to a downhole end of the whipstock tool face such that the tool assembly is downhole of the whipstock assembly when the wellbore tool assembly is lowered into the primary wellbore;
before forming the lateral wellbore, performing, using the tool assembly, a well operation downhole of a casing window from which the lateral wellbore is to be formed; and
after performing the well operation, forming, using the whipstock assembly, the lateral wellbore.