Chevron U.s.a. Inc.

Chevron Australia Pty Ltd

Douglas Cory Arceneaux

Michael J Fuller

Caleb Kimbrell Carroll

John Bryan Trenery, Jr

Peter James Clark

Benjamin James Krane

William Dale Wood

Eduardo Martinez

Paul Michael Benet

George Nabil Farag

A method of deploying an expandable composition in a cement top job in a well system includes identifying evidence of actual or potential gas migration within an annulus cement of the well system. Once the evidence of gas migration is identified, a first component and a second component are mixed in a mixer to form the expandable composition and the expandable composition is pumped from the mixer through a conduit to a top of cement of the annulus cement. The expandable composition expands to form an expanded composition that seals the annulus above the top of cement of the annulus cement. Cement can be added onto the expanded composition.

Cement top jobs in wellbore annuli using expandable compositions

An open hole formation surface within a wellbore of a well system is sealed with a polymer seal. A deployment system is inserted into the wellbore to the location of the open hole formation surface. The open hole formation surface may be located at the bottom of the wellbore or at an interval between two casing strings. The deployment system delivers an expandable polymer grout system to the location of the open hole formation surface. The expandable polymer grout system cures to form the polymer seal on the open hole formation surface.

Expandable polymer grout for sealing subterranean formations

A deployment system for deploying a polymer grout system includes a first conduit line for conveying an isocyanate component, a second conduit line for conveying an organic polyol component, and a mixer for mixing the isocyanate component and the organic polyol component to form an expandable polymer grout system that is deployed to a target location associated with a wellbore. The deployment system can include a tailpipe and/or bridge plug for directing the expandable polymer grout system to the target location. The disclosure also includes methods of using the foregoing deployment system.

Deployment methods for expandable polymer grout for plug and abandonment applications

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Katy, TX, United States of America

Douglas Cory Arceneaux