Well-seismic calibration method and device based on multiple wavelets
A well-seismic calibration and multi-wavelet technology, applied in the field of petroleum exploration, can solve the problems of poor matching results of seismic trace data, affecting the accuracy of horizon calibration, and different vertical resolutions
Pending Publication Date: 2021-09-10
PETROCHINA CO LTD
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[0010] The embodiment of the present invention also provides a computer device, which is used to solve the problem of synthetic seismic records obtained by using a single frequency seismic wavelet to perform well seismic calibration on well logging data due to the different longitudinal resolutions of measured seismic trace data in the prior art. , the matching result with the seismic trace data near the well is poor, which affects the technical problem of horizon calibration accuracy. The computer equipment includes a memory, a processor, and a computer program stored on the memory and capable of running on the processor. The processor executes The computer program realizes the above-mentioned well seismic calibration method based on multiple wavelets
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[0027] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the embodiments of the present invention will be further described in detail below in conjunction with the accompanying drawings. Here, the exemplary embodiments and descriptions of the present invention are used to explain the present invention, but not to limit the present invention.
[0028] In the description of this specification, the words "comprising", "comprising", "having", "containing" and so on are all open terms, meaning including but not limited to. A description referring to the terms "one embodiment," "a particular embodiment," "some embodiments," "for example," etc., means that a particular feature, structure, or characteristic described in connection with the embodiment or example is included in at least one of the present application. Examples or examples. In this specification, schematic representations of the above terms do not ne...
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The invention discloses a well-seismic calibration method and device based on multiple wavelets. The method comprises the steps of acquiring logging data and well-side seismic channel data acquired at a target well position; dividing the well-side seismic channel data into a plurality of time windows according to different longitudinal resolutions of the seismic data; in different time windows, carrying out well-seismic calibration on the logging data by adopting wavelets with different frequencies, and generating a synthetic seismic record corresponding to the logging data; and carrying out phase adjustment on the wavelets in different time windows so as to enable the synthetic seismic record corresponding to the logging data and the well-side seismic trace data to meet a preset correlation condition. According to the method, the seismic wavelets with different frequencies and different phases are adopted for well-seismic calibration, so that the generated synthetic seismic record can be well matched with the well-side seismic trace data, and more accurate horizon calibration is realized.
Description
technical field [0001] The invention relates to the field of petroleum exploration, in particular to a multi-wavelet-based well seismic calibration method and device. Background technique [0002] This section is intended to provide a background or context to embodiments of the invention that are recited in the claims. The descriptions herein are not admitted to be prior art by inclusion in this section. [0003] Seismic data interpretation is an important task in geophysical exploration. It uses two-dimensional or three-dimensional seismic data obtained by seismic exploration to analyze, study and determine underground geological characteristics, and convert the seismic information contained in seismic data into geological results. Specifically, according to the kinematic characteristics (travel time, velocity, etc.) and dynamic characteristics (amplitude, frequency, phase, waveform, etc.) of effective waves contained in seismic data, combined with geological, drilling, lo...
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IPC IPC(8): G01V1/36G01V1/40G01V1/32
CPCG01V1/36G01V1/366G01V1/40G01V1/32
Inventor 曾永军雷明李娟马凤良郭维华张斌
Owner PETROCHINA CO LTD