一种高抗扭矩套管螺纹的研制

The Design and Development of a High Anti-torque Casing Thread

目前随着我国石油开采难度的加大以及开采技术的不断发展,大斜度井以及水平井的开发数量越来越多。在大斜度井与水平井的开发过程中,套管的下入阻力比普通的竖直井或者小斜度井的下入阻力大得多,为了解决该问题,在套管下入过程中,需要给套管施加较大的扭矩从而克服阻力,实现套管的下入工作。普通的套管螺纹无法满足需求,为此设计一种高抗扭矩的套管螺纹来完成套管的下入工作。

with increasing difficulty of the oil production and the continuous development of technology,the number of highly deviated wells and horizontal wells become more and more.During those processes of drilling and production,the resistance of casing is much larger than straight and the ordinary inclined wells.It is needed to apply greater torque so as to overcome the resistance to lay down casing.The common casing threads are unable to meet the requirement.It has become a pressing task to design this kind of high anti-torque casing thread.