关键词: 21世纪, 钻井工程, 随钻地震, 自动化钻井, 钻井信息技术, 钻井液

Abstract: It is well known that the general developing trend of drilling technology is to realize the automatic drilling.This paper describes the theory and major techniques of automatic drilling.This paper discusses about the seismic while drilling,formation evaluation while drilling,the acquire-processing and application system of downhole dynamic data,the closed-loop data flow system,the rotary steering drilling technique,the complex architecture well,the green drilling fluid and its fine chemicals,the ultra-deep well drilling techniques,mordern balanced drilling and protection of formation from damage techniques,and drilling theory research that will be developed in the beginning of the 21st century in China.Auther emphasises to develop the downhole-controlled techniques.The drilling data acquired and processed only from surface will be changed gradually to both surface and downhole,in order to realize the decision-making and operating control mainly in downhole directly.In this paper a new research program——"downhole closed-loop automatic steering technique while drilling and its information system" is proposed.

Key words: 21^st century, drilling engineering, seismic while drilling, automatic drilling, drilling information technique, drilling fluids