US 11,668,143 B2
Deploying wellbore patch for mitigating lost circulation
Bodong Li, Dhahran (SA); Chinthaka Pasan Gooneratne, Dhahran (SA); and Timothy E. Moellendick, Dhahran (SA)
Assigned to Saudi Arabian Oil Company, Dhahran (SA)
Filed by Saudi Arabian Oil Company, Dhahran (SA)
Filed on Dec. 10, 2019, as Appl. No. 16/708,834.
Prior Publication US 2021/0172269 A1, Jun. 10, 2021
Int. Cl. E21B 33/13 (2006.01); E21B 21/00 (2006.01); E21B 47/117 (2012.01); C09K 8/516 (2006.01); E21B 33/138 (2006.01); E21B 47/12 (2012.01)
CPC E21B 21/003 (2013.01) [C09K 8/516 (2013.01); E21B 33/138 (2013.01); E21B 47/117 (2020.05); E21B 47/12 (2013.01)] 25 Claims
OG exemplary drawing
 
1. A lost circulation fabric (LCF) deployment system (LCFDS) for deploying an LCF at a lost circulation zone within a wellbore, the LCFDS comprising:
a housing configured to be coupled to a tubular, the housing defining a cavity;
an opening formed in the housing, the opening providing communication between the cavity and an exterior of the housing;
a door moveable between a closed position to cover the opening formed in the housing and an opened position to uncover the opening formed in the housing;
an LCF disposed in the cavity;
a float coupled to the LCF, the float comprising a material having a mass density less than a mass density of drilling mud such that the float is buoyant when in the drilling mud; and
a release system coupled to the LCF, the release system operable to move the door between the closed position and open position to permit deployment of the LCF.