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While-drilling azimuth electromagnetic wave resistivity measurement equipment and method

A technology of measurement equipment and measurement method, which is applied in the field of address exploration, and can solve the problems of large absolute phase error of high-frequency signals and poor measurement synchronization

Active Publication Date: 2022-07-12
INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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Problems solved by technology

[0003]The usual measurement method is: After the transmitting board sends out the electromagnetic wave signal, the receiving board is notified through the signal line to start configuring the receiving channel and start collecting the returned electromagnetic wave signal. This measurement method has poor measurement synchronization, resulting in a large absolute phase error in the measurement of high-frequency signals

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  • While-drilling azimuth electromagnetic wave resistivity measurement equipment and method
  • While-drilling azimuth electromagnetic wave resistivity measurement equipment and method
  • While-drilling azimuth electromagnetic wave resistivity measurement equipment and method

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[0029] In order to make the objectives, technical solutions and advantages of the present application clearer, the present invention will be further described in detail below in conjunction with the specific embodiments and with reference to the accompanying drawings. It should be understood that these descriptions are exemplary only and are not intended to limit the scope of the invention. Also, in the following description, descriptions of well-known structures and techniques are omitted to avoid unnecessarily obscuring the concepts of the present invention.

[0030] The accompanying drawings show a schematic structural diagram of an embodiment of the present application. The figures are not to scale and some details may have been omitted for clarity. The various regions, shapes and the relative sizes and positional relationships between them shown in the figures are only exemplary, and in practice, there may be deviations due to manufacturing tolerances or technical limita...

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Abstract

The invention provides a while-drilling azimuth electromagnetic wave resistivity measuring device and method. The while-drilling azimuth electromagnetic wave resistivity measuring device comprises a transmitting module, a receiving module and a measuring module, wherein the transmitting module comprises a first control unit and a signal generating unit connected with the first control unit; the receiving module comprises a second control unit and a signal acquisition unit connected with the second control unit; the second control unit is respectively connected with the first control unit and the signal generation unit; wherein the second control unit configures the signal acquisition unit based on the current state command of the first control unit, and controls the signal output of the signal generation unit and the starting of the signal acquisition unit based on the configuration completion state of the signal acquisition unit. Based on the requirement that a while-drilling azimuth electromagnetic wave measuring instrument needs to measure the absolute amplitude and the phase of a signal to determine boundary information of a stratum, the method can ensure that while-drilling azimuth electromagnetic wave resistivity equipment completes synchronous measurement of the absolute amplitude and the phase on the premise of completing a set measurement process.

Description

technical field [0001] The present application relates to the technical field of address exploration, and in particular, to a device and method for measuring azimuth electromagnetic wave resistivity while drilling. Background technique [0002] With the development of the petroleum industry, the scale of drilling in oil and gas fields has continued to expand. At the same time, due to a large number of development, the geographical distribution of oil and gas resources has changed significantly. Oil and gas exploration is difficult, and traditional wireline logging technology cannot meet the needs of exploration and production. Logging while drilling technology can measure data during drilling, exclude other environmental influences such as mud, and can better reflect the real geological characteristics, so it has been widely developed. Azimuth electromagnetic wave imaging logging while drilling is one of the methods of logging while drilling. The azimuth electromagnetic wa...

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Application Information

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IPC IPC(8): E21B49/00G01V3/30G01V3/38
CPCE21B49/00G01V3/30G01V3/38Y02A90/30
Inventor 李弘陈文轩张文秀张雅丽郑健刘伟
Owner INST OF GEOLOGY & GEOPHYSICS CHINESE ACAD OF SCI
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