Testing device for while-drilling acoustic logging instrument

A logging instrument and testing device technology, which is applied in the direction of earthwork drilling, borehole/well components, etc., can solve the problems of deviation in parameter adjustment, high construction cost, inability to perform online test of instrument measurement and control circuits, etc., and achieve the effect of reducing costs

Active Publication Date: 2018-02-09
中石化石油工程技术服务有限公司 +3
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The construction cost of the calibration well buried underground is relatively high, and after the instrument is placed in the underground calibration well, it is impossible to perform online testing of the instrument measurement and control circuit and debug the measurement and control circuit parameters.
At present, another way is to place the part of the instrument except the measurement and control circuit in the half-space tank on the ground. When the instrument is working, the measurement and control circuit is debugged online. At this time, the working environment of the instrument is different from the situation when the instrument is placed in the calibration well. , there is a deviation in parameter adjustment

Method used

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  • Testing device for while-drilling acoustic logging instrument

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Embodiment Construction

[0019] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0020] Such as figure 1 As shown, the present invention includes a shaft 1, a flange 2, a plug 3, an inlet pipe 4, an outlet pipe 5, an inner pulley bracket 6, and a shaft bracket 7. The wellbore 1 is cylindrical and made of materials with stable acoustic properties. The inner diameter is larger than the maximum outer diameter of the acoustic wave tool while drilling, which is the actual borehole size for the tool to work in the downhole. It usually includes several specifications of Φ152mm, Φ216mm, and Φ241mm. Since the acoustic wave instrument measures the sliding wave propagating along the well wall between the transmitting probe and the receiving probe, the detection depth is relatively shallow, so the wall thickness of the wellbore 1 can be thinner, but in order to make the wellbore 1 have sufficient strength, it can be appropriately thickened to greate...

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Abstract

A testing device for a while-drilling acoustic logging instrument comprises a wellbore, a flange plate, a plug, a water inlet pipe, a water outlet pipe, an inner pulley bracket and a wellbore bracket.The wellbore is made of materials with different sound velocities, and the part between a transmitting probe and a receiving probe of the while-drilling acoustic logging instrument can be placed in the wellbore; and the wellbore is horizontally supported on the wellbore bracket; and the while-drilling acoustic logging instrument can go in and out of the wellbore through the inner pulley bracket,and the interior of the wellbore can be filled with water in an airtight mode. The testing device for the while-drilling acoustic logging instrument is suitable for ground calibration and performancetesting of the while-drilling acoustic logging instrument in the petroleum drilling industry.

Description

technical field [0001] The invention relates to a testing device for an acoustic logging instrument while drilling, which is suitable for ground calibration and performance testing of an acoustic logging instrument while drilling in the petroleum drilling industry. Background technique [0002] The sonic logging-while-drilling tool works in a borehole filled with liquid, and measures the formations around the borehole. The formation sound velocity measured by the tool is different for different formations around the borehole. By measuring the velocity of compressional and shear waves in formation rocks in real time, not only formation porosity can be provided, but also rock mechanical properties can be analyzed. [0003] Acoustic logging while drilling usually includes a transmitting probe, a receiving probe, a measurement and control circuit, and a sound insulation body. The transmitting probe, the receiving probe and the corresponding transmitting and receiving measuremen...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B49/00
CPCE21B49/00
Inventor 杨锦舟肖红兵崔海波唐建傅正军毕青海马海李勇华
Owner 中石化石油工程技术服务有限公司
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