Loic Regnault De La Mothe

Title: Loic Regnault De La Mothe: Inventor in Well-Cementing Technologies.

Introduction

Loic Regnault De La Mothe is an inventor based in Le Chesnay, France. His work includes technologies for treating well surfaces and maintaining zonal isolation in subterranean wells. He is associated with Schlumberger Technology Corporation and holds 5 patents.

Latest Patents

“Compositions and Methods for Completing Subterranean Wells” describes well-treatment compositions that combine water, surfactants, and solvents. Added to spacer fluids or chemical washes, these compositions help remove non-aqueous drilling fluids from casing surfaces and leave the surfaces water-wet, supporting effective cement bonding.

“Methods for Maintaining Zonal Isolation in a Subterranean Well” concerns cement containing polymer particles for wells where hydrogen sulfide is present. If the cement matrix or its bond with the casing or borehole wall develops a failure, the particles swell upon contact with hydrogen sulfide. This swelling can seal voids and help restore zonal isolation.

Career Highlights

Regnault De La Mothe’s listed patent work addresses practical challenges in well construction and integrity. His inventions focus on improving casing preparation for cementing and helping preserve isolation when cement or its interfaces are compromised.

Collaborations

His listed coworkers include Sylvaine Le Roy-Delage and Matteo Loizzo. These collaborations are associated with patent work in subterranean well treatment and cementing technologies.

Conclusion

Loic Regnault De La Mothe’s patent portfolio reflects a focus on well-treatment compositions and responsive cement systems designed to support reliable bonding and zonal isolation.