DOWNHOLE SENSORS DETECTING DOWNHOLE

Brand	Owner	Address	Description
SENTRY IV	WOOD GROUP ESP, INC.	Post Office Box 15070 Oklahoma City OK 73155	downhole sensors for detecting downhole parameters;SENTRY 4; SENTRY FOUR;
	Where the owner name is not linked, that owner no longer owns the brand

Technical Examples

A method and apparatus for communicating between downhole tools without the necessity of routing the communication through a surface module. Communications sent by downhole tools are examined and extracted downhole. If the communications are intended for other downhole tools, the communications are copied to a downlink and send to a specific intended tool, a group of tools, or all the tools. This is all done downhole, significantly reducing the latency between command and response.