Machinery wireless well deviation measurement instrument while drilling

Abstract

The invention discloses a machinery wireless well deviation measurement instrument while drilling, which is composed of a tooth type measuring device, a pulse generating device and a cylinder body. The pulse generating device is located on the upper end of the tooth type measuring device and is connected with the tooth type measuring device by the inner gear of the cylinder body. When well deviation is measured, the slime pump is closed, the tooth type measuring device is rotated along the rotation of the bracket under the gravity action of the weight block until the gravitational potential energy is minimum; the well deviation angle is expanded by the accelerating gear group device and changed into the displacement of the pulse shaft by the gear in the process; then the pump is opened again, the displacement is changed into the pulse number which is corresponding to the well deviation angle one by one by the pulse generating device and is sent to the ground by the drilling fluid medium, thereby finishing the wireless measuring while drilling of the well deviation exactly and stably. The invention has simple structure, small volume, convenient operation, wide application, can be suitable for well deviation measurement and well quality control for the ground layer environment of high temperature and high pressure deep well and super deep well, and can be applied to the well track measurement of the positioning well, the horizontal well, the big displacement well and the branch well and the controlling engineering.

Description

technical field [0001] The invention belongs to the field of drilling engineering in oil and gas exploration and development, and is a measuring tool for measuring the well deviation of oil and gas wells. technical background [0002] Well inclination measuring instruments are widely used and necessary tools in oil and gas well drilling engineering. With the development of drilling technology, various well inclination measuring instruments are constantly appearing. At present, the well inclination measuring instruments used in the field mainly include photographic, electronic and mechanical. Due to the difficult operation and low precision of the photographic well inclination measuring instrument, the field application is gradually reduced. The electronic well inclination measuring instrument is used in different occasions, among which the electronic single-point well inclination measuring instrument is a kind of vertical well inclination measuring instrument widely used in...

AI Technical Summary

Problems solved by technology

"From the public content, its shortcomings are that its accuracy is 0.5°, and its hydraulic oil expands under high temperature conditions, compressing the spring, and the piston rod cannot move, directly causing the instrument to fail to work or the signal error to be large; in addition, its The measurement range of the inclination angle is small, and when the inclination angle exceeds the measurement range, it is necessary to adjust the angle range adjustment sleeve and the angle adjustment ring

The above-mentioned technical fields have higher requirements for well inclination measurement. The current inclination measuring devices and instruments are not suitable for the technical needs of vertical rapid drilling and precise wellbore trajectory control with higher precision requirements. Innovative design of technical route and process technology, and research and development of corresponding products

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