一种跨越式水平井越障牵引器设计

Design of a Leap-type Horizontal Well Tractor

针对水平井轮式牵引器存在的越障能力差及越障方式单一等问题,通过对其越障力学的研究,提出了一种跨越式水平井越障牵引器的结构设计。该结构设计包括探测式扶正器、多节牵引机构和电路控制系统。探测式扶正器可以提前探测井下障碍物的方向和大小;多节牵引器机构可实现交替牵引、跨越障碍物的越障动作。跨越式水平井越障牵引器越障迅速灵活,安全可靠,提高了牵引器的越障能力,可应用于大障碍物较多以及井径变化的水平井中;具有轮式牵引器的连续牵引和高效快速特性。研究结果为提高水平井牵引器越障能力提供了一种可行的设计方案。

To address the problems of wheeled horizontal well tractor like poor obstacle crossing ability and solo obstacle crossing way,a structural design of a leap-type horizontal well obstacle-crossing tractor was proposed by studying the obstacle-crossing mechanics of the horizontal well tractor. The structure design includes a detecting centralizer,a multi-section traction mechanism and a circuit control system. The detecting centralizer can detect the direction and size of the downhole obstacles in advance. The multi-section traction mechanism can realize the obstacle crossing action by alternating traction. The leap-type horizontal well tractor features with rapid and flexible obstacle-crossing and safe and reliable operation. With improved the obstacle crossing ability,it can be applied to horizontal wells with large obstacles and varying well diameters. The new developed tractor has the same features of wheeled tractors like continuous traction and fast and high efficient traction,providing a viable design solution for improving the obstacle crossing capability of horizontal well tractors.