ALEXANDRIA, Va., Nov. 18 -- United States Patent no. 12,473,818, issued on Nov. 18, was assigned to Schlumberger Technology Corp. (Sugar Land, Texas).
"Method and system for monitoring and controlling fluid movement through a wellbore" was invented by Oney Erge (Houston), Ginger Vinyard Hildebrand (Houston) and Wayne Kotovsky (Katy, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A method for moving fluid through a pipe in a wellbore includes placing at least two different fluids in the pipe and in an annular space between the pipe and the wellbore. Fluid is pumped into the pipe at a rate to achieve a desired set of conditions. Using a predetermined volume distribution of the annular space, an axial pos...