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Ultrasonic well logging instrument

A logging tool and ultrasonic technology, used in surveying, wellbore/well components, earth-moving drilling, etc., can solve the problems of inability to meet the requirements of measurement and limited detection indicators.

Inactive Publication Date: 2005-04-13
SHANDONG UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Ultrasonic logging equipment in the prior art is only suitable for small-diameter wellbore measurements such as oil wells. The medium environment is industrial water or mud with a small specific gravity. Requirements for deep well measurement

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0054] see figure 1 , the ultrasonic logging tool of the present invention is mainly composed of downhole tool subsystem 100, uphole tool subsystem 300, depth tool subsystem 700, transmission cable and winch subsystem 600, positioning rope and winch subsystem 800, oscilloscope subsystem 400, The computer subsystem 500 is composed. Each subsystem is described below:

[0055] 1. Downhole tool subsystem

[0056] see figure 2 , Figure 2A , the core of the downhole instrument subsystem is the instrument part enclosed in the airtight body. The instrument part can stand on the ground with four supporting feet 101 under normal conditions; 102 is the protective frame added to protect the probe, and 104 is the four upright columns , fixed on 108, there are four ultrasonic probes 106, the chassis 103, 105 and four uprights 104 on which the ultrasonic probe 106 is installed are fixed together, the probe is fixed on the chassis by a ring card 107; the outer diameter of the instrument...

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Abstract

The ultrasonic well logging instrument includes well instrument subsystem for sending ultrasonic pulse signal, receiving well wall reflected ultrasonic signal and converting it into electric pulse signal and performing the amplification, filtering and conversion; ground instrument subsystem for providing the well instrument subsystem with proper electric energy, generating sync pulse, receiving the signal from the well instrument subsystem, amplifying and converting the received signal and acquiring correlated data; and computer subsystem connected to the ground instrument subsystem via data lines for comprehensive data acquisition and processing. The present invention is suitable for measurement in small bore well bore with small specific weight slurry, great bore deep well, well bore with great specific weight slurry and well of industrial water.

Description

technical field [0001] The invention relates to an ultrasonic logging device. Background technique [0002] The ultrasonic logging equipment in the prior art is only suitable for small-diameter wellbore measurements such as oil wells. The medium environment is industrial water or small-specific gravity mud, and the indicators that can be detected are also limited, which is far from meeting the requirements of large-diameter drilling such as coal mine drilling and nuclear industry drilling. Requirements for deep well surveys. SUMMARY OF THE INVENTION [0003] The task of the present invention is to provide an ultrasonic logging tool suitable for large-diameter deep wells, which can work in mediums such as mud with a relatively large specific gravity or industrial water, and can provide technical parameters such as well wall inclination, well diameter, etc. The construction provides effective technical guarantee. [0004] Its technical solutions are: [0005] The ultrason...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B47/00E21B47/01E21B47/02E21B47/14E21B47/18
Inventor 曹茂永杨卫平孙农亮梁慧斌范迪陈达庆张逸芳王德民
Owner SHANDONG UNIV OF SCI & TECH
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