Drill string stabilizers are important tools for controlling wellbore trajectory parameters in drilling engineering. They are used to stabilize drill strings during oil, gas, and geological exploration drilling. Their effective stabilizing action increases bit life, improves drilling speed, and enhances wellbore quality. Overall stabilizers can be divided into two types: spiral stabilizers and straight blade stabilizers.
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Gimbal with positive and negative stroke stabilization
The positive and negative scraping stabilizer is an important tool in drilling engineering to prevent well deviation. It increases the drill bit life, improves drilling speed and wellbore quality with its effective stabilizing effect. The positive and negative scraping eyes are specially set several cutting teeth at the upper and lower ends of the stabilizer working zone. During drilling and tripping, it can play a two-way cutting role, repairing the well wall, making the well trajectory as close to the ideal state as possible, and preventing dog-leg phenomenon. Especially during tripping, it is often difficult to trip due to wellbore necking and other reasons. At this time, the reverse scraping teeth can play a cutting role to eliminate necking and other phenomena, thus saving a lot of time and cost for drilling.
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The replaceable stabilizer consists of an integral core shaft and sleeve, possessing the function of an integral helical stabilizer. By replacing different straightening sleeves, it can adapt to different well diameters. Replacing with identical straightening sleeves extends the stabilizer's service life. The straightening sleeve and core shaft are connected by a conical thread, making the connection more reliable and replacement/assembly more convenient.
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