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High-precision automatic identification system for three-dimensional sequence

An automatic identification system and automatic identification technology are applied in seismic signal processing and seismology for well logging records. It can solve problems such as coarse stratigraphic framework, low resolution, and difficulty in sequence boundary space closure, and achieve good results. The effect of applying the effect

Inactive Publication Date: 2012-06-27
中国石油化工股份有限公司胜利油田分公司勘探开发研究院西部分院 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of relatively coarse chronostratigraphic framework, low resolution, difficult sequence boundary space closure and slow speed in the current sequence division and research.

Method used

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  • High-precision automatic identification system for three-dimensional sequence
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  • High-precision automatic identification system for three-dimensional sequence

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Embodiment 1

[0016] A high-precision three-dimensional sequence automatic identification system, including a data acquisition device 1, a seismic time-frequency analysis device 2, a logging cycle analysis device 3, an automatic sequence identification device 4, and a sequence output device 5; wherein the data acquisition Device 1 is mainly used to obtain various data required by the high-precision 3D sequence automatic identification system; Seismic cycle analysis device 2 is mainly used to perform cycle analysis on the acquired seismic data, using different algorithms to perform cycle analysis respectively, and according to the seismic data quality, finally optimize the optimal algorithm, and use the optimal algorithm to obtain the spatial time-frequency distribution characteristics of seismic data; the logging cycle analysis device 3 mainly performs cycle analysis on the obtained logging data, and according to different logging curves Carry out cycle analysis separately, and comprehensive...

Embodiment 2

[0019] The seismic time-frequency analysis device 2 in the present invention includes a seismic data preprocessing device 21 and a seismic time-frequency processing device 22; analysis, seismic data denoising, filtering and continuity enhancement analysis, etc., the seismic time-frequency processing device 22 mainly performs time-frequency processing on the preprocessed seismic data, and analyzes its spatial time-frequency distribution characteristics.

Embodiment 3

[0021] The sequence automatic tracking device 4 in the present invention also includes a seismic and logging cycle matching device 41 and a sequence automatic tracking device 42; wherein the seismic and logging cycle matching device 41 is mainly a cycle of seismic data established through time-frequency analysis. analysis, comparison, filtering, and matching of the two cycles; the sequence automatic tracking device 42 mainly automatically tracks the seismic events, and combines the seismic and logging data When well cycle matching is applied, seismic events are given the meaning of sequence.

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Abstract

The invention discloses a high-precision automatic identification system for a three-dimensional sequence. The system comprises a data acquisition device (1), a seismic time-frequency analysis device (2), a logging cycle analysis device (3), an automatic sequence identification device (4) and a sequence output device (5), wherein the data acquisition device (1) is connected with the seismic time-frequency analysis device (2) and the logging cycle analysis device (3) respectively; and the automatic sequence identification device (4) is connected with the seismic time-frequency analysis device (2), the logging cycle analysis device (3) and the sequence output device (5) respectively. By the system, the problem that the three-dimensional sequence has a low speed is solved, and the problem that a sequence space is difficult to close is effectively solved. The system automatically identifies the sequence in the three-dimensional space based on seismic event tracking through well logging and position restriction according to the seismic time-frequency analysis and logging cycle analysis by taking cycle matching as a core. The system has good application effects of dividing sequences, identifying sedimentary facies and sedimentary systems, realizing sedimentary evolution of reservoirs and contributing to reservoir distribution.

Description

technical field [0001] The invention relates to the field of petroleum exploration seismic interpretation and comprehensive research, in particular to sequence division and application. Background technique [0002] Sequence stratigraphy is a geological science that comprehensively utilizes logging, drilling, outcrop, seismic and other data, combined with the interpretation of sedimentary environment and lithofacies palaeogeography, to study the distribution mode of strata, sedimentary environment and lithofacies characteristics. Through the division and study of sequences, the depositional environment and distribution characteristics of sedimentary facies can be obtained, which is an important basis for reservoir prediction. The core of sequence stratigraphy is the establishment of sequence framework and the identification of sequence boundaries. In conventional sequence research, under the constraints of well calibration, through the analysis of sedimentary geology and se...

Claims

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Application Information

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IPC IPC(8): G01V1/30G01V1/50
Inventor 宋传春王树华谭绍泉孙怡许涛
Owner 中国石油化工股份有限公司胜利油田分公司勘探开发研究院西部分院