ALEXANDRIA, Va., Dec. 31 -- United States Patent no. 12,509,956, issued on Dec. 30, was assigned to Vertice Oil Tools INC. (Missouri City, Texas).
"Methods and systems for selective downhole isolation" was invented by Michael Lo (Missouri City, Texas) and Mohamed Ibrahim Saraya (Sugar Land, Texas).
According to the abstract* released by the U.S. Patent & Trademark Office: "A downhole tool configured for selective fluid communication and isolation within a wellbore. The tool includes a mandrel, housing, plug. In a first mode, the tool functions as a resettable check valve to isolate a first area from a second area. In a second mode, the tool permits bidirectional flow while maintaining a one-way seal during transition. The plug and plunger...