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Logging frequency matching thin-layer correction method and equipment

A technology of frequency matching and correction method, used in seismology, earthwork drilling, wellbore/well components, etc. for logging records, which can solve the problem of thin reservoir thickness, logging curve affected by surrounding rock, distortion, etc. problem, to achieve the effect of increasing the vertical resolution

Active Publication Date: 2010-12-15
PETROCHINA CO LTD
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Problems solved by technology

[0004] The purpose of the present invention is to provide a thin-layer correction method and equipment for matching logging frequency, which can be aimed at the current oil and gas fields with thin layers and thin gas layers, where the thickness of the reservoir is thin, the logging curve is affected by the surrounding rock, and the distortion phenomenon is serious problem, improve the vertical resolution of the logging curve, so as to truly reflect the formation information

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  • Logging frequency matching thin-layer correction method and equipment
  • Logging frequency matching thin-layer correction method and equipment
  • Logging frequency matching thin-layer correction method and equipment

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Embodiment 1

[0060] Taking the frequency matching thin-layer calibration of the spontaneous potential SP curve as an example, the calibration method and calibration equipment of the present invention will be described in detail. Also refer to Image 6 with Figure 7 . Image 6 The logging frequency matching thin-bed correction method of this embodiment performs frequency matching thin-bed correction on the spontaneous potential curve SP. A continuous 128 data point data comparison table is selected on the GR curve and the SP curve, and the corrected result SPR curve data. Figure 7 It is a comparison diagram before and after frequency matching thin-bed correction of the logging curve of the embodiment of the present invention.

[0061] 1. Such as Figure 5 As shown, the solid line ① represents the SP curve before calibration, and the solid line ② is the selected high-resolution curve, that is, the reference logging curve is GR. It can be seen that the longitudinal resolution of the GR curve ...

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Abstract

The embodiment of the invention discloses a logging frequency matching thin-layer correction method and logging frequency matching thin-layer correction equipment. The method and the equipment can solve the problems of low thickness of a storage layer, influence of a wall rock on a logging curve and serious distortion of an oil-gas field developed from a thin layer and a thin air layer and can improve the longitudinal resolution of the logging curve so as to really reflect stratal information.

Description

Technical field [0001] The invention relates to the field of logging data processing, in particular to a method and equipment for logging frequency matching thin-bed correction. Background technique [0002] Different logging curves have different longitudinal resolutions. For oil and gas fields with thin layers and thin interbeds, the thickness of a single layer of the oil and gas layer is smaller than the longitudinal resolution of some logging curves. In this case, logging curves will appear. It is not possible to completely and truly reflect the formation information. The thin-bed correction method is aimed at this situation, and through certain mathematical processing methods, the longitudinal resolution of the logging curve is improved, and it is as close to the true value of the formation as possible. [0003] The implementation of the current frequency matching method requires an original high-resolution curve and an original low-resolution curve, and its purpose is to imp...

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Application Information

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IPC IPC(8): E21B49/00G01V1/48
Inventor 马建海司马立强段生盛吴丰刘新美
Owner PETROCHINA CO LTD
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