A mechanical inclinometer while drilling

Abstract

The invention discloses a mechanical inclination measuring instrument while drilling. The casing includes an upper fixed seat, an internal measurement structure and a lower fixed seat; the internal measurement structure includes a weighted platform, a spherical distribution valve, a distribution valve seat and a hydraulic turbine disc valve. The upper part of the platform is rotatably connected with the lower surface of the upper fixed seat; the lower end of the eccentric platform is threadedly connected with the distribution valve seat; the spherical distribution valve is arranged in the distribution valve seat, and the distribution valve seat and the spherical distribution valve are hinged through the hinge shaft, so that the The spherical distribution valve can rotate around the hinge shaft in the distribution valve seat; the lower part of the distribution valve seat is rotatably connected with the upper surface of the lower fixed seat after passing through the hydraulic turbine disc valve, so that the internal measuring structure can rotate relative to the housing . The spherical distribution valve is arranged with coded flow holes corresponding to different well inclination angles to realize mechanical coding. The overall mechanical structure is adopted, which is resistant to high temperature and high pressure, and can effectively measure well inclination information, and can meet the measurement requirements of large well inclination drilling process.

Description

technical field [0001] The invention belongs to the field of well logging operations, and specifically relates to applications suitable for vertical wells, directional wells and horizontal wells, and is particularly suitable for completing well logging operations in drilling projects such as deep wells, ultra-deep wells, high temperature and high pressure wells. Requirements, a mechanical while-drilling inclination measuring instrument capable of real-time measurement of well-drilling inclination. Background technique [0002] At present, with the development of energy exploration technology, the construction of deep wells and ultra-deep drilling is gradually increasing. Directional drilling is a necessary technical means in deep and ultra-deep drilling. The key to directional drilling is the accuracy of measurement data while drilling. [0003] Hot dry rock geothermal resources have become a hot spot of exploration and exploitation at present. The proven reserves can meet t...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to provide a mechanical inclination measuring instrument while drilling, which is used to measure the inclination angle in an ultra-high temperature environment, and solves the problem that the electronically controlled measuring while drilling tool is prone to failure in a high temperature environment, which will affect the drilling progress The problem

Images