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Classification and classification modeling method of dissolved pores and vugs in fractured-cavity carbonate reservoirs

A technology of carbonate reservoirs and dissolution pores, which is applied in the field of reservoir geological modeling, can solve problems such as difficult prediction, complex seismic response characteristics, and dissolution pores of various causes, so as to improve the modeling method and improve the accuracy

Active Publication Date: 2022-03-01
CHINA PETROLEUM & CHEM CORP +1
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Problems solved by technology

[0006] Aiming at the problems of various origins of dissolved pores in fractured-vuggy carbonate rocks, complex seismic response characteristics of dissolved pores and difficult prediction, the present invention provides a classification and classification modeling method for dissolved pores in fractured-vuggy carbonate reservoirs to improve Research level of geological modeling of fractured-vuggy reservoirs, serving for improving recovery of fractured-vuggy carbonate reservoirs

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  • Classification and classification modeling method of dissolved pores and vugs in fractured-cavity carbonate reservoirs
  • Classification and classification modeling method of dissolved pores and vugs in fractured-cavity carbonate reservoirs
  • Classification and classification modeling method of dissolved pores and vugs in fractured-cavity carbonate reservoirs

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[0032] The present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, as long as there is no conflict, each embodiment and each feature in each embodiment of the present invention can be combined with each other, and the formed technical solutions are all within the protection scope of the present invention.

[0033] The grading and classification modeling method of dissolved pores and vugs in fractured-cavity carbonate reservoirs of the present invention includes:

[0034] According to the range of seismic prediction of dissolution vugs, establish the level of seismic facies of dissolution vugs;

[0035] Classify the cause types of dissolution pores;

[0036] Integrate the seismic facies classification and genetic classification methods of dissolution vugs, and establish three-dimensional geological models of different types of dissolution vugs by classification;

[0037] Diffe...

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Abstract

The present invention proposes a classification and classification modeling method of dissolution vugs in fracture-cavity carbonate reservoirs, including establishing the seismic facies level of dissolution vugs according to the seismic prediction range of dissolution vugs; dividing the cause types of dissolution vugs; Facies classification and genetic classification methods, classification and classification to establish three-dimensional geological models of different types of dissolution pores; different types of dissolution pores are fused to form a three-dimensional distribution model of dissolution pores. The grading and classification modeling method for dissolution pores and vugs of fracture-cavity carbonate reservoirs of the present invention effectively improves the precision of modeling dissolution pores and vugs of fracture-cavity reservoirs, and improves the geological modeling method of fracture-cavity reservoirs.

Description

technical field [0001] The invention relates to the field of geological modeling of oil reservoirs, in particular to a modeling method for classification and classification of dissolved pores and caves in fractured-vuggy carbonate rock oil reservoirs. Background technique [0002] Reservoir geological modeling is an important content of reservoir description. The purpose is to establish a geological model that conforms to reservoir geological knowledge through various data such as geology, well logging, seismic and production dynamics. [0003] Fractured-vuggy carbonate reservoirs are different from sandstone and conventional carbonate rocks. The reservoir space is mainly composed of pores, fractures and caves, with strong heterogeneity, and the reservoirs are deeply buried, with a depth of 5000-6000m , Seismic resolution is low, which makes geological modeling more difficult. [0004] Relevant experts and scholars have also done a lot of research on the problems encountere...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/20G06T17/05G01V1/28G06F111/04G06F111/08
CPCG06T17/05G01V1/282G06F30/20
Inventor 李红凯吕心瑞刘坤岩魏荷花卜翠萍
Owner CHINA PETROLEUM & CHEM CORP
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