US 11,939,835 B2
Repairing wellbores with fluid movement behind casing
Mohamed M. El Nekhily, Al Khobar (SA); Khalsa Kanwal Bahadur, Al Khobar (SA); and Ibrahim A. Al-Obaidi, Al Khobar (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Apr. 4, 2022, as Appl. No. 17/712,799.
Prior Publication US 2023/0313636 A1, Oct. 5, 2023
Int. Cl. E21B 33/14 (2006.01); E21B 23/06 (2006.01); E21B 29/00 (2006.01)
CPC E21B 33/14 (2013.01) [E21B 23/06 (2013.01); E21B 29/002 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method comprising:
milling a section of casing within a wellbore;
after milling the section of the wellbore, underreaming the section of the wellbore through to a next layer of casing;
after underreaming the section of the wellbore and before installing a scab liner over the section, squeezing a setting fluid into the section, the setting fluid penetrating micro-channels exposed by the milling and underreaming;
after squeezing the setting fluid into the section, installing the scab liner over the section; and
after installing the scab liner over the section, securing the scab liner within the wellbore.