Hard electrode combined logging instrument for logging drill well

A well logging instrument and drilling technology, which is applied in measurement, borehole/well components, earthwork drilling and production, etc. It can solve the problems of increasing logging risk, lengthening the occupied well, increasing the cost of drilling companies, etc.

Active Publication Date: 2013-12-11
北京环鼎科技有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, customers request to provide electrode system data during domestic well logging. For this reason, the oilfield logging team must complete the electrode system logging in a single trip in

Method used

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  • Hard electrode combined logging instrument for logging drill well
  • Hard electrode combined logging instrument for logging drill well
  • Hard electrode combined logging instrument for logging drill well

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Embodiment Construction

[0040] The following content will describe in detail the specific implementation of the present invention in conjunction with the accompanying drawings:

[0041] see figure 2 , for the hard electrode combination of the present invention, the logging instrument is composed of a return electrode 1, an emission electrode 2 and an electronic circuit 3; the return electrode 1 and the emission electrode 2 are all provided with an electrode ring, and the electrode ring is connected to the One end of the electronic circuit is connected. Among them, the electronic circuit includes a power supply circuit, a measurement amplifier circuit, a scale circuit, a power control circuit and a communication interface circuit. Among them, the length of the return electrode 1 of the logging tool is 4445mm, the length of the emitting electrode 2 is 4590mm, the length of the electronic circuit is 1080mm, and the outer diameter is 92mm. The recording points of the logging tool include 2.5M gradient ...

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Abstract

The invention provides a hard electrode combined logging instrument for logging a drill well. The logging instrument comprises a current-return electrode, an emission electrode and an electronic circuit; the logging instrument is capable of realizing one-time well descending, thus being capable of performing the measurement on data of an electrode system; the electronic circuit comprises a power supply circuit, a measurement amplification circuit, a scale circuit, a power control circuit and a communication interface circuit. The logging instrument provided by the invention has the beneficial effect of being capable of measuring a conventional curve required by a user, and also measuring a potential curve and a gradient curve simultaneously by one-time well descending under the control of a telemetry instrument.

Description

Technical field: [0001] The invention belongs to the field of well logging instruments, in particular to a hard electrode combined well logging instrument for measuring drilling. Background technique: [0002] At present, customers request to provide electrode system data during domestic well logging. For this reason, the oilfield logging team must complete the electrode system logging in a single trip in addition to the Grand Slam conventional logging. This not only increases the logging risk, And lead to lengthening when occupying the well, greatly increasing the expense cost of the drilling company. [0003] Common resistivity logging methods are often used in the prior art, and the measurement principle can be found in the appendix figure 1 , in order to measure the resistance R of a certain resistance, a power supply can be used to supply power to the resistance, and the current I flowing through the resistance and the voltage drop V across the resistance can be measur...

Claims

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Application Information

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IPC IPC(8): E21B49/00E21B47/00
Inventor 何明李英波刘金柱
Owner 北京环鼎科技有限责任公司
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