A wellbore trajectory tracking nipple damping device

Abstract

The invention relates to a wellbore trajectory tracking nipple damping device, which is used in the field of horizontal well drilling. Its technical scheme: it consists of a compression wall, a capping cover, a cylinder with five-sided holes, a passive variable damping rubber airbag shock absorber, a quartz accelerometer, a gyroscope and a main controller; the short section has a cylinder with five-sided holes, five Passive variable damping rubber airbag shock absorbers with main controller, gyroscope and three groups of accelerometers are respectively installed in each rectangular hole, the main controller, gyroscope and three groups of accelerometers are arranged radially; passive variable damping rubber The airbag shock absorber is composed of a semi-cylindrical rubber airbag, a thin rubber tube and a rubber film; this shock absorber uses the flow of air to effectively adjust the damping of the rubber airbag, while improving the safety of the rubber airbag, it achieves better shock absorption. Shock effect, simple structure, easy to install, greatly improving the shock absorption capacity of the pup joint.

Description

technical field [0001] The invention relates to a sub-joint shock absorbing device for wellbore trajectory tracking, which is a sub-joint device that uses radially arranged sub-joint components and passive variable damping rubber airbag shock absorbers to realize shock absorption for the device, and is used for water Flat well drilling field. Background technique [0002] With the development of science and technology, the accuracy requirements for borehole trajectory tracking are also gradually increasing, so the integrated navigation device that integrates sensors such as accelerometers, magnetometers, radars, and gyroscopes is used more and more frequently in borehole trajectory tracking subsections. At present, the damping method of short joints at home and abroad is usually to arrange the sensor in the axial direction, and install a single rubber buffer in the axial direction of the short joint for shock absorption. However, in actual construction, because the short joi...

AI Technical Summary

Problems solved by technology

At present, the damping method of short joints at home and abroad is usually to arrange the sensor in the axial direction, and install a single rubber buffer in the axial direction of the short joint for shock absorption. However, in actual construction, because the short joint is close to the drill bit, Therefore, the pup joints exist in the environment of high temperature, strong vibration, and large impact for a long time. In the case of strong vibration and large impact, the axial arrangement will make the rubber buffer bear excessive pressure, which may cause the rubber buffer to lose Due to the shock absorption effect, the accuracy of the measurement data of the sensor will decrease, and it is more likely to cause damage to the sensor. Once the sensor fails, it must be tripped again and the instrument will be sent back to the manufacturer for maintenance. Therefore, every time the damage will bring a lot of losses to the construction party.

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