Halliburton Energy Services, Inc.

Elbert Juan Smith

Clark E Robison

Harold Kent Beck

Ian Phillips

Arthur Isadore Burke

Tance Jackson

Alan Tancel Jackson

Ian Colin Phillips

A system of downhole communication and control is provided in methods and associated apparatus for data retrieval, monitoring and tool actuation. In a described embodiment, an item of equipment installed in a tubular string has a first communication device associated therewith. A tool conveyed into the tubular string has a second communication device therein. Communication is established between the first and second devices. Such communication may be utilized to control operation of the tool, retrieve status information regarding the item of equipment, supply power to the first device and/or identify the item of equipment to the tool.

Methods and associated apparatus for downhole data retrieval, monitoring and tool actuation

Disclosed is a method of communicating data and control signals between a down hole well tool and surface equipment wherein variations in the tension of the line supporting the tool from a reference tension value established with the well tool in place for operation are imposed at one location on the support line and detected at another location on said support line said variations in tension being coded in frequency, magnitude, polarity or duration or combinations thereof to convey the data and control signals between the two locations.

Method of comminicating data through a slickline of other single cable

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Garland, TX, United States of America

Elbert Juan Smith