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Single frequency modulation pulse signal source for while-drilling layer range radar of horizontal well

A technology of pulse signal source and ranging radar, which is applied in the field of drilling signal processing, can solve problems such as energy loss, distortion, ultra-wideband narrow pulse signal ringing, etc., achieve high detection resolution and improve the effect of detection depth

Active Publication Date: 2016-02-24
BC P INC CHINA NAT PETROLEUM CORP +2
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Problems solved by technology

[0007] When using a narrow-band flat-panel slot antenna as a transceiver antenna, if the high-voltage narrow-pulse signal source commonly used in ground-penetrating radar is still used, there will be two defects: First, most of the energy of the emitted ultra-wideband narrow-pulse signal will not be able to radiate through the antenna into the formation, resulting in energy loss; second, the emitted ultra-wideband narrow pulse signal will produce "ringing" phenomenon, resulting in serious distortion

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  • Single frequency modulation pulse signal source for while-drilling layer range radar of horizontal well
  • Single frequency modulation pulse signal source for while-drilling layer range radar of horizontal well
  • Single frequency modulation pulse signal source for while-drilling layer range radar of horizontal well

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[0016] Below, the implementation of the technical solution will be further described in detail in conjunction with the accompanying drawings.

[0017] Those skilled in the art can understand that although the following description involves many technical details related to the embodiments of the present invention, this is only an example for illustrating the principle of the present invention, and does not imply any limitation. The present invention can be applied to occasions other than the technical details exemplified below, as long as they do not deviate from the principle and spirit of the present invention.

[0018] In addition, in order to avoid making the description in this manual limited to redundant, in the description in this manual, some technical details that can be obtained in the existing technical documents may be omitted, simplified, modified, etc. understandable to human beings, and this does not affect the adequacy of the disclosure of this specification. ...

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Abstract

The invention discloses a single frequency modulation pulse signal source for a while-drilling layer range radar of a horizontal well. The single frequency modulation pulse signal source comprises a continuous wave signal source and a pulse signal source, wherein the continuous wave signal source is used for generating continuous wave signals which are used as signals to be modulated; and the pulse signal source is used for generating pulse signals which are used as carrier wave signals for modulating the signals to be modulated. The single frequency modulation pulse signal source for a while-drilling layer range radar of a horizontal well not only can guarantee that the while-drilling layer range radar is higher in detection resolution, but also can guarantee that the emission signals can be emitted to the stratum, with high efficiency and high fidelity. Therefore, the single frequency modulation pulse signal source can effectively improve the detection depth of the while-drilling layer range radar.

Description

technical field [0001] The invention relates to the field of drilling signal processing, in particular to a single-frequency modulated pulse signal source for horizontal well drilling-while-drilling layer ranging radar, which is mainly applicable to layer thickness detection of oil beds, coal beds and other reservoirs during drilling. Background technique [0002] With the continuous development of the oil and gas industry and the increasing difficulty of exploration and development, the oil and gas industry has gradually turned to unconventional oil and gas reservoirs with thin oil and gas layers, poor physical properties, and strong heterogeneity. The application of process wells is also increasing year by year. In the construction process of these special craft wells, it is necessary to grasp the characteristics of the rock formation drilled by the drill bit in time, find the reservoir quickly and accurately, and then use the measurement-while-drilling technology to detec...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S7/282
CPCG01S7/282
Inventor 滕鑫淼盛利民窦修荣艾维平禹德洲王磊石荣吕海川
Owner BC P INC CHINA NAT PETROLEUM CORP
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