SU326356A1 - INCLINOMETER OF SINGLE ACTION - Google Patents

Description

The invention relates to the field of drilling equipment and is intended to measure the curvature of exploration wells.

Single-action inclinometers are known, including a housing, sensitive elements of azimuth and zenith angle sensors, and a locking device.

Such inclinometers are suitable for measuring the curvature of only vertical and inclined wells drilled at zenith angles not exceeding 65 ° C.

The proposed inclinometer differs from the known ones in that the azimuth angle sensing element is designed as a graduated hemisphere, planted freely on a spring-loaded axis, mounted on a sensing element of a zenith angle, which is suspended on axles of a bracket rigidly connected to the arresting device.

This will increase the limits of inclinometer measurements from 0 ° to 180 ° and will allow the measurement of the curvature of not only vertical and inclined, but also horizontal and rising wells.

FIG. 1, 2, 3 shows the proposed inclinometer.

forms that have ball segments cut off from above and from two sides. The plumb line has an axis on which the azimuthal angle sensing element rotates, made in the form of a graduated hemisphere 2. The plumb is suspended on the axes on a bracket 3 rigidly fixed to the arresting rod 4, provided with an eccentric weight 5 and a rubber ring 6 installed in the cup. The latter is rigidly fastened with arresting rod.

Sensitive elements are enclosed in a housing 7, the lower part of which, made of a transparent material, has a hemispherical shape. Inside the hemisphere of the hull there is an annular risk A, which is based on the zenith angles. Azimuths are measured by graduation on the azimuth hemisphere and nonius applied on the ball surface of the plumb line.

The arresting rod is equipped with a spring 8 and has a pointed fungus at the end opposite to the cup with the rubber ring. With the help of the fungus, the brake-release levers 9,

contracted by spring 10, depress the arresting rod in the cocked state (spring 8 is compressed). Well 13, time relay 14 and an autonomous source of electrical current 15. The sensitive elements of the zenith angle and azimuth shown in FIG. 2 in section, contain a sensitive element of the zenith angle, a sensitive element of the azimuth angle, a permanent magnet 16, a nlit 17, a supporting magnet fixed inside the azimuth hemisphere, an axis 18, a spring 19, a supporting axis providing the necessary clearance between the lower end of the azimuth hemispheres and the upper end of the plumb line. The inclinometer works as follows. When the contacts on the dial 15 of the time relay are clocked by the hour and minute hands, the winding of the electromagnet 11 is connected to the circuit of the electric current source 15. As a result, the core 12 of the electromagnet overcomes the force of the return spring, 20 moves out of the coil of the electromagnet and with its cone spreads the ends of the brakes-locking lever I as a result, the fungus on the arresting rod 4 is released, and the latter is moved to the left by the action of the spring 8. Upon reaching the cup with a rubber ring, the sensitive elements of the azimuth and zenith angles under the action of the force of the spring move with the bracket 3, on which it is suspended, along the axis of the device until

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fiiSi i will be pressed against the spherical surface of the housing 7. In this case, the ends of both sensitive elements will be pressed against each other. The system returns to its original position (released) manually. For this, the arresting rod is moved to the right. At the same time, the fungus at its end, having overcome the force of the spring, which tightens the levers of the brake fixator, pushes them apart, and then they snap it. Since at the time of deactivation one or both hands of the time relay are not closed by the contacts, the circuit is de-energized. The core of the electromagnet is in the initial position. Due to this, the arrest does not occur at the moment. The invention is a single-action inclinometer comprising a housing, sensitive elements of azimuthal and zenith angle sensors and a arresting device, characterized in that, in order to extend the measurement limits, the sensitive element of the azimuthal angle is designed as a graduated hemisphere, freely seated on a spring-loaded axis, mounted on a sensitive element zenith angle, which is suspended on the axis of the bracket rigidly connected with the arresting device.