可调弯角螺杆案例(国外英文资料).doc

可调弯角螺杆案例(国外英文资料) Adjustable curved shell screw drill (AKO) extension application Wang chunyang, li liangjun (big port oilfield, machinery manufacturing co., LTD.) Abstract: this paper introduces the adjustable curved shell structure of screw drilling tools, use method, introduced the advantages of its use and specific application examples, try to summarize to problems arising from the use, and put forward improvement methods, points out the development direction of the technology, the adjustable screw drill tool (AKO) applied to adapt to the development of drilling technology. Key words: adjustable curved shell screw drill Angle method tool face practice application The screw drill is a downhole dynamical drill that was applied to drilling operations in the 1970s. 80 s screw drill tool manufacturing technology from abroad in our country, on the basis of through the digestion, absorption and development, developed with independent intellectual property rights of screw drilling tools, now has all kinds of domestic screw drilling tools meet the requirements of drilling operation. The screw drill is widely used in drilling and drilling of the directional well, the horizontal well, the cluster well, the orientation, the deviation, and the horizontal section drilling. To drill a certain Angle and azimuth of hole, control of borehole trajectory, screw drill with a certain amount, the screw drill cardan shaft casing design for curved shell, general of 0 ~ 3 ° camber, in order to achieve a certain slope requirements. The Angle of the traditional screw drill tool curved shell is fixed, namely every screw drill tool has a certain corner structure, usually accomplish a certain radius of curvature of a hole drilling operation. When the radius of the curvature of different well is changed, the screw drill can be changed to meet the different slope requirement. With the development of the drilling process, screw drill tool in all kinds of great increase the number of used in dril