Ground surface strike-slip fracture detection method based on ground penetrating radar technology and deep application thereof

A technology of ground penetrating radar, detection method, applied in the field of geological exploration

Inactive Publication Date: 2021-06-25
CHINA UNIV OF PETROLEUM (EAST CHINA)
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Problems solved by technology

However, due to the limitations of the quality of seismic data, the uncertainty of manual interpretation, and the invisibility of deep stratigraphic sections, other means are still needed to improve the interpretation accuracy of complex strike-slip fault systems

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  • Ground surface strike-slip fracture detection method based on ground penetrating radar technology and deep application thereof
  • Ground surface strike-slip fracture detection method based on ground penetrating radar technology and deep application thereof
  • Ground surface strike-slip fracture detection method based on ground penetrating radar technology and deep application thereof

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Embodiment

[0048] X Oilfield is the main production oilfield of Tarim Oilfield. After years of practical research, it has been confirmed that strike-slip faults and karstification are the main controlling factors for the formation of carbonate reservoirs. Therefore, clarifying the distribution and development characteristics of strike-slip faults plays an important role in guiding the further development of oilfields. At present, in the deep carbonate reservoirs of this study area, the identification of strike-slip faults with small fault throws is mainly based on the beaded reflections of the sections in the 3D seismic data, but the internal structure and spatial distribution of the beaded reflections are not well understood ; It can also be based on the staggered segment of the reflection event in the seismic data, the extraction of discontinuous seismic attributes, etc. The interpretation work is deeply limited by the depth of the formation and manual interpretation. Adopting the meth...

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Abstract

The invention discloses a technical method for detecting a ground surface strike-slip fracture system based on a ground penetrating radar technology and applied to deep carbonate rock strike-slip fracture interpretation, and belongs to the field of geological exploration. The method includes the following steps: 1) carrying out field geological background research and typical strike-slip fracture outcrop radar operation area selection; 2) designing and arranging ground penetrating radar survey lines and acquiring field data; (3) optimizing parameters for indoor processing and interpretation of ground penetrating radar data; and 4) under the similar geological background, comparing the radar interpretation result with the strike-slip fracture in the deep carbonate rock stratum so as to guide the interpretation of an underground strike-slip fracture system. The new method for detecting the ground surface strike-slip fracture through the ground penetrating radar technology is created, meanwhile, the ground surface strike-slip fracture development law is controlled by utilizing the characteristics of lossless and efficient detection of the ground penetrating radar and combining geological conditions, the method is applied to explanation of deep stratum complex strike-slip fracture, a good effect is achieved in explanation of strike-slip fracture in Tabei Ordovician stratums, and the application prospect is wide.

Description

technical field [0001] The invention relates to the field of geological exploration, and relates to a method for applying the results of ground-penetrating radar on the surface to explain the structure of deep carbonate strata. Background technique [0002] Carbonate rocks are generally dense in lithology and have few fractures, so it is difficult to form effective reservoirs. Usually, only through the transformation of groundwater, deep hydrothermal fluids and other fluids to form storage spaces such as dissolution pores and caves, can they become effective reservoirs. Faults are the main channels for karst fluids in carbonate formations. Therefore, it is of great significance to clarify the development rules and structural styles of faults in carbonate formations for the analysis of reservoir distribution. The development of strike-slip faults is often multi-stage, and the structural style is relatively complex. Especially in deep carbonate formations, it is difficult to ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01S13/88
CPCG01S13/885
Inventor 杨志鹏任丽华林承焰
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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