Abstract:

In order to promote the development and utilization of dry hot rock resources in China, we take Kenya OLKARIA block as an example, and introduce the exploration, evaluation, development and utilization process of high temperature geothermal resources in Kenya in detail. At the same time, eight key drilling technologies formed during the development and utilization of high-temperature geothermal resources of the CNPC Great Wall Drilling Company are summarized and detailed engineering examples are listed. At last, the difficulties and challenges encountered in the development and utilization of Kenya's geothermal resources and China's dry hot rock resources are summarized and compared, the similarities and difference between countries are sorted out, and the solutions are put forward. With the establishment of a test base as the core, and with the developing and verifying new technologies and new equipment and forming new technical standards as the research direction, to point out that with the goal of realizing economical, profitable and large-scale development of dry hot rock, to strength basic scientific research work as a means, by the research idea of relying on the support of national policies and strengthen personnel training as the driving force, to provide theoretical and practical guidance for the efficient and economical development of dry hot rock resources in China.

Key words: geothermal resource, high-temperature drilling, air foam drilling, PDC drilling bit, dry hot rock