Depiction method of carbonate rock fracture cavity internal structure

A technology of internal structure and carbonate rock, applied in the direction of measuring devices, instruments, scientific instruments, etc., to achieve the effect of improving lateral resolution and depicting ability

Inactive Publication Date: 2017-10-20
CHINA PETROLEUM & CHEM CORP
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Problems solved by technology

At present, there are few studies on the characterization of the lateral structure of fractured-vuggy carbonate reservoirs. The research on the lateral structure of fractured-vuggy bodies (that is, lateral segmentation or lateral segmentation) and improving the lateral resolution of data are currently the key issues for carbonate fractured-vuggy reservoirs. The key to layer fine characterization

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  • Depiction method of carbonate rock fracture cavity internal structure
  • Depiction method of carbonate rock fracture cavity internal structure
  • Depiction method of carbonate rock fracture cavity internal structure

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Embodiment Construction

[0019] Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. Although exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited by the embodiments set forth herein. Rather, these embodiments are provided for more thorough understanding of the present disclosure and to fully convey the scope of the present disclosure to those skilled in the art.

[0020] According to the seismic conditions in the construction area, for the defined medium-large size (greater than one-sixteenth wavelength) fracture-vuggy, the lateral width of the fracture-cavity body in seismic response is obviously larger than its real lateral width, and the internal structure of the real fracture-cavity type may be single Or more complicated, the "beaded" anomaly of the seismic response cannot judge its inter...

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Abstract

The invention discloses a depiction method of a carbonate rock fracture cavity internal structure. The method comprises steps that based on existing geological knowledge, seismic data corresponding to a fracture cavity is acquired; for the seismic data, frequency spectrum decomposition is employed, and the high frequency information is utilized to depict the internal structure of the fracture cavity.

Description

technical field [0001] The invention relates to the description of carbonate rock dissolution fracture-cavity reservoir bodies in seismic exploration, in particular to a method for describing the internal structure of carbonate rock fracture-cavity bodies. Background technique [0002] Carbonate rock dissolution reservoirs are mainly formed by atmospheric fresh water, organic acid dissolution, and deep hydrothermal dissolution reformation in the later stage of diagenesis. These types of reservoirs are collectively referred to as fracture-cavity reservoirs. [0003] In reality, the internal structure of fractured-cavity carbonate reservoirs is relatively complex, which is different from the nearly horizontal layered reflected wave response of the bedrock in carbonate rock formations, mainly consisting of strong energy "beaded" windings. Due to the existing seismic geological acquisition conditions of this type of reservoir, the seismic resolution is generally low. Due to th...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01V1/30
CPCG01V1/306G01V2210/624
Inventor 丁维邓光校王震文欢
Owner CHINA PETROLEUM & CHEM CORP
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