Ultrasonic logging system using self-orienting device of ultrasonic logging instrument

A technology of directional device and logging instrument, which is applied in the direction of borehole/well components, measurement, earthwork drilling and production, etc. It can solve the problems of unstable performance, poor seismic performance, complex structure, etc., and achieve simplified operation, simple directional mode, and small volume. small effect

Active Publication Date: 2010-06-30
SHANDONG UNIV OF SCI & TECH
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Problems solved by technology

At that time, mechanical gyro orientation was used, but its structure was co...

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  • Ultrasonic logging system using self-orienting device of ultrasonic logging instrument
  • Ultrasonic logging system using self-orienting device of ultrasonic logging instrument
  • Ultrasonic logging system using self-orienting device of ultrasonic logging instrument

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Embodiment Construction

[0032] The implementation of the ultrasonic logging system adopting the self-directing device of the ultrasonic logging tool of the present invention will be described in detail below with reference to the accompanying drawings.

[0033] See figure 1 The ultrasonic logging system of the present invention includes a downhole tool 1, a depth gauge 2, a logging winch 3, an armored cable 4, a pulley 5, a ground workstation 6 and a printer 7. The downhole tool 1 is hung by the armored cable 4 and is armored. The cable 4 bypasses the pulley 5 and connects the depth gauge 2 and the logging winch 3 in turn. The logging winch 3 is also connected to the ground workstation 6, and the ground workstation is connected to the printer 7.

[0034] See figure 2 with image 3 , The downhole tool 1 includes four parts: a suspension device 101, a main device 102, a transducer device 103 and a counterweight device 104.

[0035] The suspension device 101 is a semi-closed cylindrical cavity, one end is clo...

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Abstract

The invention provides an ultrasonic logging system using a self-orienting device of an ultrasonic logging instrument. The system comprises a down-hole meter which is connected with a depth gauge and a logging winch by an armoured cable bypassing a pulley, wherein the logging winch is connected with a ground workstation; the depth gauge is arranged for measuring the laid down depth of the down-hole meter; a main device of the down-hole meter is fixed with an optical fiber top inside so as to measure the self-orienting direction of the down-hole meter; an energy converter device is provided with a plurality of uniformly distributed energy converters; the energy converter sends an ultrasonic wave and receives an echo aperture of a measuring well; and the ground workstation performs the single-step linear prediction interpolation on the orienting direction data of the optical fiber top, performs the linear interpolation on the depth of the depth gauge, performs the linear interpolation on the aperture value measured by the energy converter, and calculates and acquires a solid pattern and a parameter of a rockshaft. The invention provides an ultrasonic logging system using a self-orienting device of an ultrasonic logging instrument which promotes the self-orienting precision of the ultrasonic logging instrument and widens the measuring scope of the down-hole meter.

Description

Technical field [0001] The invention relates to an ultrasonic logging system, in particular to an ultrasonic logging system adopting a directional device applied to the ultrasonic logging instrument itself to accurately determine the measurement orientation. Background technique [0002] Underground drilling, continuous walls, etc. are a kind of concealed engineering. When the instrument is lowered into it for measurement, it will rotate due to the torsion of the steel wire rope of the suspended instrument. Without the help of a certain positioning method, the personnel on the ground cannot know The rotation of the instrument. The orientation methods available for logging tools include dual wire rope guidance, marking wire rope orientation, fluxgate, magnetic compass and gyroscope. [0003] The "SKD-1 large-diameter ultrasonic logging tool" and "SD-1 deep-well logging tool" of Shandong University of Science and Technology are guided by double wire ropes. The method is simple and r...

Claims

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Application Information

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IPC IPC(8): E21B47/01E21B47/14E21B47/04E21B47/085
Inventor 曹茂永范迪孙农亮
Owner SHANDONG UNIV OF SCI & TECH
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