METHOD OF COMMUNICATING DATA THROUGH A SLICKLINE OR OTHER SINGLE CABLE SUSPENSION ELEMENT

摘要

Disclosed is a method of communicating data and control signals between a down hole well tool and surface equipment wherein variations in the tensio n 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.