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Reservoir classification method and device

A reservoir and amplitude distribution technology, applied in the direction of instrumentation, data processing application, prediction, etc., can solve the problem that the continuous prediction of downhole reservoir type cannot be realized

Active Publication Date: 2018-09-28
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

[0004] However, the above-mentioned reservoir classification method can only obtain the type of reservoir corresponding to the rock sample by analyzing the mercury injection curve of the rock sample, and it cannot realize the continuous prediction of the downhole reservoir type

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  • Reservoir classification method and device

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Embodiment Construction

[0078] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0079] The terms "first", "second", "third", "fourth", etc. (if any) in the description and claims of the present invention and the above drawings are used to distinguish similar objects and not necessarily Describe a specific order or sequence. It is to be understood that the data so used are interchangeable under appropriate circumstances such that the embodiments of the invention described herein are, for example, capable of practice in sequences other than...

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Abstract

The invention provides a reservoir classification method and device. The method comprises the following steps that: according to the nuclear magnetic resonance transverse relaxation time T2 spectrum and the radial basis function of N pieces of rock samples, obtaining a first center matrix; according to the nuclear magnetic resonance T2 spectrum and the mercury penetration experiment data of N pieces of rock samples, obtaining a first reservoir classification comprehensive index; according to the inverse matrix of the first center matrix and the first reservoir classification comprehensive index, obtaining a weight coefficient matrix; and then, according to the nuclear magnetic resonance T2 spectrum of points to be classified and the weight coefficient matrix, determining a second reservoirclassification comprehensive index, wherein the second reservoir classification comprehensive index is used for indicating the reservoir type of the points to be classified. By use of the reservoir classification method and device, an underground reservoir type can be continuously predicted, a plurality of rock samples or a plurality of underground points to be classified can be subjected to reservoir classification, operation speed is high, and reservoir classification accuracy is high.

Description

technical field [0001] The invention relates to the technical field of oil and gas development, in particular to a reservoir classification method and device. Background technique [0002] With the depletion of conventional oil and gas resources and the increasing demand for energy in the world, the status of unconventional oil and gas resources is becoming more and more important. Classifying reservoirs of unconventional oil and gas resources is an important link in oil and gas development. Since unconventional oil and gas reservoirs generally have complex pore structures, the classification of reservoirs based on a single characteristic parameter cannot achieve ideal classification results. Therefore, unconventional oil and gas resources are usually classified based on multiple characteristic parameters, such as porosity, permeability, saturation and pore structure parameters. [0003] At present, the commonly used reservoir classification method is to obtain rock sample...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q10/06G06Q50/02G06Q50/06
CPCG06Q10/04G06Q10/06393G06Q50/02G06Q50/06
Inventor 谢然红高伦刘秘谷明宣吴勃翰
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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