What Are The Main Uses Of Heavy Weight Drill Pipe

What Are The Main Uses Of Heavy Weight Drill Pipe

1. Used in the transition zone between the drill collar and the drill pipe to ease the change of the bending stress between the two to reduce the damage of the drill pipe;

2. Replace the drill collar in small hole drilling, which is easy to operate;

3. Replace most drill collars in directional wells to reduce the occurrence of torque and sticking drill, thereby reducing costs and helping to maintain the orientation of the directional well. Due to the large contact area between the drill collar and the closure, there is a great friction with the well wall during transportation, which makes the wellbore tend to deflect. When the drill collar is replaced with a weighted drill pipe, this possibility can be reduced, which is conducive to maintaining the orientation of the directional well.

Weighted drill pipe: For components on the drill string, the weight per unit length of the weighted drill pipe is medium. This drill pipe is a heavy wall body with an extended joint.

The outer diameter of the weighted drill pipe is similar to that of the standard drill pipe to facilitate the operation of the drilling rig. The characteristic of the weighted drill pipe is that it can withstand pressure like a drill collar. A unique feature of the weighted drill pipe is that there is a wear-resistant belt in the middle of the drill pipe. The wear-resistant belt can act as a stabilizer, increase the rigidity of the weighted drill pipe in the drill string, and reduce the well deviation.

The characteristics of the weighted drill pipe are that the wall thickness is more than 2 times that of the ordinary drill pipe, its joint body is longer than that of the ordinary drill pipe, and there is a special wear-resistant roller in the middle of the pipe body.