US 12,228,010 B1
Eutectic alloy system for casing-casing annulus cement repair
Amjad Alshaarawi, Dhahran (SA); Zahrah Marhoon, Dhahran (SA); Abdullah Atiyah, Dhahran (SA); Ahmed Bukhamseen, Dhahran (SA); Thomas Heinold, Dhahran (SA); Peter Egbe, Dhahran (SA); and Alessandro Gallelli, Dhahran (SA)
Assigned to SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed by SAUDI ARABIAN OIL COMPANY, Dhahran (SA)
Filed on Jan. 5, 2024, as Appl. No. 18/405,571.
Int. Cl. E21B 33/14 (2006.01); E21B 33/16 (2006.01); E21B 36/04 (2006.01)
CPC E21B 33/16 (2013.01) 20 Claims
OG exemplary drawing
 
10. A method, comprising:
running a eutectic alloy system into a wellbore including a first casing string and a second casing string arranged within the wellbore;
activating a differential valve tool within the second casing string and thereby generating a primary annular seal within a casing-casing annulus defined between the first and second casing strings;
pumping a flushing fluid into the casing-casing annulus above the primary annular seal via a first ported collar;
melting a eutectic alloy blanket into a molten alloy within the flushing fluid in the casing-casing annulus via a heater;
solidifying the molten alloy to establish a supplemental seal above the primary annular seal in the casing-casing annulus; and
pumping cement into the casing-casing annulus above the supplemental seal to form a cement column in the casing-casing annulus via a second ported collar.