Drilling in Dongqiu 6 well in piedmont high and steep structure

In view of such problems as difficult and slow drilling in piedmont high and steep structure of Tarim Oilfield, advanced technologies including the vertical drilling technology, the high quality PDC bits, and the technology for drilling in compound salt formations are introduced. Taking Dongqiu 6 well as an example, complex drilling technologies in piedmont high and steep structure are discussed from the perspectives of key technologies and drilling process of compex wells. Application results show that these technologies solve the problems in high-speed, efficient, and safe drilling in piedmont high and steep structure of Tarim Oilfield.