A stabilizer for reducing torsion and drag

Abstract

The invention provides a torque reducing and resistance reducing stabilizer, which is provided with a tubular stabilizer body, wherein a position limiting ring, a rotatable centralizing body and a locking ring are sequentially arranged on the outer side of the stabilizer body from top to bottom; a female buckle and a male buckle are correspondingly formed in the upper end and the lower end of the stabilizer body; the two ends of the centralizing body, the position limiting ring and the locking ring are respectively sealed through an end surface sealing device; the locking ring is connected with the stabilizer body through screw threads. The torque reducing and resistance reducing stabilizer has the advantages that the torque reducing and resistance reducing effects can be achieved during drilling operation; the friction torque in the drilling process can be reduced to the great degree; the safe, fast and smooth proceeding of the drilling process is ensured.

Description

technical field [0001] The invention belongs to the field of petroleum engineering, and in particular relates to a stabilizer for reducing torsion and drag. Background technique [0002] In the process of oil and gas drilling, the stabilizer is a very important downhole tool, which can play a role in preventing deviation of vertical wells, controlling the trajectory of the wellbore and improving the stability of the drill bit. However, during the use of the stabilizer for drilling, the frictional resistance between the stabilizer and the borehole wall is relatively large, and the torque also increases thereupon, and even causes the situation that it cannot be lowered in severe cases. [0003] Currently, there are three basic types of stabilizers: rigid stabilizers, non-rotating rubber boot stabilizers, and roller stabilizers. Among them, the rigid stabilizer includes two types of helical and straight edge, which can be made into long or short to meet the requirements of var...

AI Technical Summary

Problems solved by technology

Among them, the rigid stabilizer includes two types of helical and straight edge, which can be made into long or short to meet the requirements of various formations and processes. It is the most widely used stabilizer. The friction of the device is too large, which is not conducive to drilling operations; the main advantage of the non-rotating rubber sleeve stabilizer is that it will not damage the well wall and is safe to use, but it does not have the ability to repair the well wall, and is limited by the downhole temperature. The service life is low, so the application range is small

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