| Compound drilling techniques is a kind of drilling method which use slid–steering down hole assembly while drilling. This kind of method includes two ways of drilling,directional drilling and rotary drilling. Through this method we can build angle,anti-collision,build and hold the wellbore,decrease hole angle and change the azimuth without change the BHA. It used for drilling the high quality trajectory quickly,reducing the times of trip,improving the speed and accuracy of drilling.The paper comes from the principle of compound drilling technology,studies the compound to advance speed rate and packed,analyses the drilling parameters,and developments its build angle capability and compound drilling drill string mechanics. In view of the characteristics of Jilin Oilfield,applications compound technology on the anti-collision and avoidance of obstacle,small play well and shallow directional well,and designs on-site well path control's matching technology. |
