SLIM-HOLE DRILLING TECHNOLOGY

After the horizontal well,slim hole is another popular technology beginning in the late of 80’s.Based on small scale field tests and predition abroad,these slim holes to reduced drilling cost by 30%~40% compared to the conventional wells,Economic results are very considerable.The first part of this paper introduces that the backgroud of slim holes drilling technology appears again,the definition of a slim hole,why a slim hole can reduce drilling costs,its range of application and development prospect.The second part mainly analyse the problems needed to be studied and solved in slim hole drilling technology and solution level of them up-to-date abroad.In the final,several suggestions are presented presented that this technology is a system project which should be studied mainly and carried out tests and spread applications.