Photoelectric 12 divisions drilling tools face angle drill following sensor

A photoelectric and sensor technology, applied in the field of sensors, can solve the problems of inability to perform testing while drilling, turbidity of drilling circulating fluid, impracticability of deep holes, etc., and achieve the effect of convenient secondary instrument interface, low cost and strong vibration resistance

Inactive Publication Date: 2004-12-29
CHINA UNIV OF GEOSCIENCES (WUHAN)
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Problems solved by technology

Among them, although the surface drill pipe busbar orientation method is simple, the accuracy of the test is low due to the flexibility and distortion of the drill pipe, so this method is not feasible for deep holes; although the drilling gyro orientation is very accurate, it must It is troublesome to operate, expensive (about 100,000 RMB), and cannot be tested while drilling; single and multi-point positioning photography is not measurement while drilling, and the continuity is poor; methods such as in-hole TV and CCD camera are in principle It is possible to obtain the surface truth of the drilling tool in the hole, but it requires sufficient clarity in the hole, which is impossible to achieve in most actual drilling because the drilling circulating fluid is turbid

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  • Photoelectric 12 divisions drilling tools face angle drill following sensor
  • Photoelectric 12 divisions drilling tools face angle drill following sensor
  • Photoelectric 12 divisions drilling tools face angle drill following sensor

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Embodiment Construction

[0022] The invention aims at the key technical problem that the face angle of the drilling tool needs to be detected while drilling in the underground near-horizontal steering drilling project, and realizes the detection of the face angle of the drilling tool by adopting the method of combining the gravity rolling slider and the photoelectric effect. Due to the limitation of the diameter of the underground borehole, the sensor is required to be small in size and easy to install. In addition, it should be able to adapt to the environment of measurement while drilling (anti-vibration, etc.).

[0023] Such as figure 2 , image 3 , Figure 4 As shown, the photoelectric 12-degree indexing drilling tool face angle while drilling sensor, the front cover plate 7 is evenly arranged with 6 light-emitting holes 10 along the circumference, and the 6 infrared light-emitting tubes 9 are respectively located in the light-emitting holes 10; One side of the front cover 7 is provided with a...

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Abstract

The present invention is one photoelectronic 12-graduation drilling rig face angle sensor. The drilling rig face angle sensor consists of front cover plate; 6 infrared LEDs set separately inside 6 LED holes distributed homogeneously in circumference of the front cover plate; and holding bin with light blocking device and 6 holes holding 6 infrared receiving tubes separately; with the LEDs and the infrared receiving tubes are coaxial separately. The present invention has the features of test with the drilling rig, high vibration resistance, small size and low cost.

Description

technical field [0001] The invention relates to a sensor, in particular to a drilling tool face angle while drilling sensor, which is used in the field of underground near-horizontal steering control drilling, such as underground near-horizontal docking hole projects, trenchless laying of underground pipeline projects, oil and gas near water Hirao direction control, etc. Background technique [0002] The face angle of the drilling tool refers to the angle formed by two specific spatial planes (plane 1 and plane 2) of the underground drill bit, such as figure 1 As shown in the figure: 1-leading slope, 2-drilling tool, 3-face angle of drilling tool, 4-plumb plane, 5-busbar surface of drilling tool, 6-preset busbar, plane 1 is the underground drill bit (drilling tool 2) The generatrix surface 5 of the drill tool is formed by the central axis of the drill tool and a certain generatrix (preset generatrix 6) marked in the axial direction on the outer edge of the drill tool. The p...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/12
Inventor 乌效鸣胡郁乐向荣忠刘国华吴来杰赵晶
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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