A NEW DEVELOPMENT OF DRILLING & COM PLETION TECHNOLOGY FOR DEEP WELL IN DAQING OILFIELD

Through field testing in14 wells in Daqing oilfield from 2000 to 2002, formed a set of drilling completion matching technology suited for deep well feature in Daqing Songliao basin, it met the need of exploration and development. The deep well drilling and completion technology in high temperature and hard formation can improve ROP, well-bore quality and cementing quality, in which the development of anti - high temperature drilling fluid system and cement slurry system has an important breakthrough. At the same time, the failure control technique of deep well drilling tool, deviation control technique in high steep and hard formation, two - stage cementing tool, and cementing matching technique in long section were further developed and perfected.