Abstract: With the increasing of oilfield development difficulty,more and more high-temperature high-pressure (HTHP) deep wells and super-deep wells are being drilled.Common measurement while drilling (MWD) has high failure rate in HTHP environment,so it can not ensure the accuracy and continuity of measurement.In order to solve this problem,high temperature resisting sureshot-MWD is introduced.This measurement is designed to resist high temperature up to 175 ℃ and it is composed of brushless motor positive pulse generator,battery and probe.It features high temperature resistance,flexible setup and expandability.The unique rotary valve of sureshot-MWD has the function of automatic unfreezing and it can work normally in the intervals with sand content 3%.In field application,sureshot-MWD works normally in drilling high temperature intervals,the expanded LWD could realize accurate geo steering,which shortens drilling period and increases reservoir targeting ratio.