Patent ID: 8181057

Claim:
A method of synchronizing units of a formation evaluation/drilling operation evaluation system, comprising: determining a time delay associated with a communications link between a master unit and a slave unit of the formation evaluation/drilling operation evaluation system, wherein the master unit has a master time clock that provides universal time; and using the time delay associated with the communications link to enable synchronization of time provided by a slave time clock in the slave unit to the universal time; wherein the master unit and slave unit are part of a transmitter tool in a cross-well survey system, the method further comprising: providing a receiver tool in the cross-well survey system, wherein the receiver tool has a second master unit and a second slave unit; determining a time delay associated with a second communications link between the second master unit and the second slave unit, wherein the second master unit has a second master time clock that provides universal time; and using the time delay associated with the second communications link to enable synchronization of time provided by a second slave time clock in the second slave unit to the universal time provided by the second master time clock.