Location History:
- Houston, TX (US) (2009)
- Sugar Land, TX (US) (2001 - 2014)
Company Filing History:
4 out of 10,200 
2 out of 2,453 Years Active: 2001-2014
Title: Innovations of John R Wallis
Introduction
John R Wallis is a notable inventor based in Sugar Land, TX (US). He has made significant contributions to the field of reservoir simulation, holding a total of 5 patents. His work focuses on developing advanced methods and systems for solving complex fluid flow equations in geological formations.
Latest Patents
One of his latest patents is titled "System and method for performing reservoir simulation using preconditioning." This invention provides a computer-implemented system, method, and software for solving linear systems of equations that arise in reservoir simulation. The method involves applying block diagonal scaling to the linear system of fluid flow equations, which represent fluid flow properties in a subterranean reservoir. Additionally, threshold incomplete lower-upper approximate factorization is utilized to obtain a preconditioning matrix, facilitating the iterative solution of unknown variables associated with the fluid flow equations.
Another significant patent is the "Constrained pressure residual preconditioner for efficient solution of the adjoint equation." This invention discloses a method, system, and computer program product that employs a constrained pressure residual (CPR) preconditioner to solve adjoint models. The method constructs a matrix comprising a transpose of a Jacobian matrix associated with the linear system of fluid flow equations. A constrained pressure residual preconditioner is then constructed in response to this matrix, allowing for efficient solutions of the matrix equation.
Career Highlights
Throughout his career, John R Wallis has worked with prominent companies such as Schlumberger Technology Corporation and Chevron U.S.A. Inc. His experience in these organizations has contributed to his expertise in reservoir simulation and fluid dynamics.
Collaborations
John has collaborated with esteemed colleagues, including Hamdi A Tchelepi and Gary K Li. These partnerships have further enhanced his research and development efforts in the field.
Conclusion
John R Wallis is a distinguished inventor whose work in reservoir simulation has led to innovative solutions in fluid dynamics. His contributions continue to impact the industry positively.