In the oil and gas exploration, development,Hydraulic Drilling jars  drilling must be carried out after logging in order to understand the situation hydrocarbon formation. However, access is always after the completion of drilling, the instrument cable into the well to measure, however, in some cases, as well gradient exceeds 65 degrees in highly deviated wells or horizontal well logging data, with Cable is difficult to put down the instrument; In addition, the wall is not good prone to collapse or blockage also difficult to obtain logs. Due to the drilling process to use drilling fluid circulation, with a broken drill cuttings, drilling fluid filtrate invasion always formation. Therefore, drilled again after logging various parameters formation just drilled strata and different. So people think that if the logging tool on the drill bit, let the drill bit long on the "eyes", while you get a variety of information while drilling formation, which is the LWD. Not only the well for any situation, especially horizontal wells may be logging, and drilling parameters and formation parameters using the measured time to adjust drill track, so that the direction of drilling along the target horizon. Since logging while drilling formation parameters obtained are just drilled formation parameters, it is closest to the original state formation, for the formation of complex oil and gas more favorable evaluation than wireline.Intelligent Drilling Robot  LWD tools on the drill collar, in addition to measuring the resistivity, sonic, neutron porosity, density and other conventional logging and some imaging logging, but also measuring WOB, torque, speed, annulus pressure drilling parameters. Since the drill bit during drilling in harsh environments, high temperatures, pressure is great, intense vibration, therefore, LWD instrument reliability is still the most important issue is the business.