John Birckhead - Spring TX Harry Ehlert - Houston TX
Assignee:
Weatherford/Lamb, Inc. - Houston TX
International Classification:
F16K 1740
US Classification:
137 74, 137 72
Abstract:
This invention relates generally to remotely operated well borehole or sub-sea tools for oilfield use, and more particularly, for a one shot valve useful for activating such well tools or sub-sea devices in a safe and reliable manner.