The Research of Information and Power Transmission Property for Intelligent Drillstring

This paper reviews the development of ground and underground communications in drillstring, and analysis the current information transmission method used in several problems and limitations. Pointed out the information and the power transmission is an important part of the intelligent drillstring and put forward sharing a pair of embedded wires to transmit information and power at the same time new solutions. Intelligent drillstring with embedded wires transmission method can transmit enough power from the ground to the underground, but also can establish the ground and underground two-way "information superhighway" with maximum transmission rate of 500Kbps at the same time, conducted a ground simulation test, obtained the expected results, which shows the feasibility and superiority of the intelligent drillstring.