ALEXANDRIA, Va., April 21 -- United States Patent no. 12,607,107, issued on April 21, was assigned to Halliburton Energy Services Inc. (Houston).
"Sleeve for multi-stage wellbore stimulation" was invented by Ibrahim El Mallawany (Al-Khobar, Saudi Arabia) and Ahmed Saber Mohamed (Al Khobar, Saudi Arabia).
According to the abstract* released by the U.S. Patent & Trademark Office: "An assembly to be positioned in a wellbore formed in a subsurface formation, that comprises a tubular housing having a bore therethrough; and a fracking sleeve comprising, a closing fracking baffle; wherein the fracking sleeve is to axially move from the closed position to an open position to open the at least one stimulation port to communicate a flow of the bore...