US Patent Issued to Halliburton Energy Services on Nov. 11 for "Tubing pressure insensitive subsurface safety valve" (Singaporean, British, American Inventors)

ALEXANDRIA, Va., Nov. 11 -- United States Patent no. 12,467,336, issued on Nov. 11, was assigned to Halliburton Energy Services Inc. (Houston).

"Tubing pressure insensitive subsurface safety valve" was invented by Mohamed Mohsen Mohamed Raffy (Singapore), Agasthya Raghavan (Aberdeen, Great Britain), Andrew James Kelbie (Carrollton, Texas) and Michael Linley Fripp (Singapore).

According to the abstract* released by the U.S. Patent & Trademark Office: "Provided is a subsurface safety valve. The subsurface safety valve, in one aspect, includes a tubular housing having a longitudinal opening, and one or more openings extending into the tubular housing. The subsurface safety valve, in one aspect, further includes a longitudinal valve positione...