Wireless measuring-while-drilling instrument

Abstract

The invention discloses a wireless measuring-while-drilling instrument. The wireless measuring-while-drilling instrument comprises a centering device upper connector and a gamma probe tube, wherein a splineouter barrel is arranged on the right side of the centering device upper connector; a spline core shaft is arranged on the right side of the splineouter barrel; a noise reductionabsorption layer is arranged outside the splineouter barrel; a centering device casing is arranged outside the noise reductionabsorption layer; a sealing ring is arranged in the middle of the right end of the centering device casing; an antenna terminal is arranged above the right side of the sealing ring. The wireless measuring-while-drilling instrument has the advantages that certain interfering noise outside a machine body is absorbed, so that signals received by a receiver are purer; the oil cavity core shaft is connected with the splineouter barrel through a spline, so that the spline is higher in bearing capacity, shafts are more stable during the process of shock absorption, and the vibration influence is small; a helical antenna receiver is arranged, so that the receiving range of signals of the instrument is larger, the instrument can reach a deeper part to perform exploring, and the precision of the instrument is kept.

Description

technical field [0001] The invention belongs to the technical field of measuring instruments while drilling, and in particular relates to a wireless measuring instrument while drilling. Background technique [0002] The mechanical wireless while-drilling inclinometer solves the problem that the existing instruments cannot measure the inclination in the upper part of the fast drilling section and the deep well and the high-temperature well. Compared with electronic MWD instruments and other types of inclinometers, inclinometers are much cheaper to manufacture, simpler and more reliable to use on site, and lower in use and maintenance costs. It has a very high cost performance. [0003] When the original wireless measurement while drilling instrument works in the downhole, the signal reception is relatively weak because the well is relatively deep, and it will also be affected by some noise generated by ground equipment when it is working, vibration and noise generated during...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a wireless measurement-while-drilling instrument to solve the problem that the original wireless measurement-while-drilling instrument in the background technology mentioned above will receive relatively weak signal because the well is relatively deep and will be affected by ground equipment when it is working underground. Some noises generated during work, vibrations and noises generated during drilling affect signal transmission and affect the accuracy of measurement while drilling

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