Through nearly two years of research and practice of research and practice, west oil joint has formed and mastered the enhanced geothermal energy EGS development technology system. The system that in high temperature hot dry rock by means of drilling, fracturing and cycling test form a closed loop, through the water injection recovery underground hot steam is used for power generation technology finally, including granite geothermal well optimized and fast drilling technology, high-temperature orientation technology, high temperature drilling fluid system, high temperature cementing technology, granite of high temperature fracturing technology, high temperature fracturing fluid system, injection production equipment selection, injection production process design, combined with the single loop and double loop two cycle power generation principle and the corresponding equipment, comprehensive supporting formed key technologies and features of technology of form a complete set combination of EGS geothermal energy development technology system.