Control system for use in an underground well, the device controller for use in an underground well.Method for determining whether a command signal a priori unknown but repetitive was delivered to the interior of a well.Control method of a tool of the interior of the shaft in an underground well

摘要

"Control system for use in an underground well, the device controller for use in an underground well.Method for determining whether a command signal a priori unknown but repetitive was delivered to the interior of a well.Control method of a tool of the interior of the shaft in an underground well. The present invention provides a device and a method of use for control of a tool inside of the well from a remote location.Based on self correlation of sequences of command.Repetitive signals form a priori unknown or undefined may be correlated with themselves and establish a reliable distinction between intentional changes and flutUau00e7u00f5es random or other operations carried out in the well.Through the use of autocorrelation.Any pressure fluctuations of sufficient amplitude can be used to send commands through the control of the timing or the number of repetitions of the sequ00b3u00eancia.