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A Calculation Method of Permeability Curve in Fractured Formation Based on Acoustoelectric Imaging Logging Chart

A technology of imaging logging and calculation method, applied in the direction of permeability/surface area analysis, measuring device, using sound wave/ultrasonic wave/infrasonic wave to analyze fluid, etc., to achieve the effect of accurate evaluation and guidance of exploration and development

Active Publication Date: 2022-06-07
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0007] On the whole, there is no set of methods that can accurately calculate the permeability curve of fractured formations. Therefore, the development of a set of methods for calculating the permeability curves of fractured formations based on well logging data is of great significance in the field of exploration and development of fractured oil and gas reservoirs. Significance and broad prospects

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  • A Calculation Method of Permeability Curve in Fractured Formation Based on Acoustoelectric Imaging Logging Chart
  • A Calculation Method of Permeability Curve in Fractured Formation Based on Acoustoelectric Imaging Logging Chart
  • A Calculation Method of Permeability Curve in Fractured Formation Based on Acoustoelectric Imaging Logging Chart

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[0062]In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention, but not to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. The components of the embodiments of the invention generally described and illustrated in the drawings herein may be arranged and designed in a variety of different configurations. Thus, the following detailed description of the embodiments of the invention provided in the accompanying drawings are not intended to limit the scope of the invention as claimed, but are merely representative of selected embodiments of the invention. Based on the embodiments of the prese...

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Abstract

The invention discloses a method for calculating the permeability curve of a fractured formation based on an acoustic-electric imaging logging map, which comprises the following steps: S1, converting the color acoustic-electric imaging logging map into a grayscale image; S2, dividing the grayscale image Obtain a binary image from cracks and holes; S3, cut the binary image into several small binary images by selecting an appropriate window length and step size; S4, take a small binary image, and construct the small binary image 3D physical model of cracks and holes; S5, calculate the permeability based on the 3D physical model; S6, repeat steps S4-S5 to obtain the permeability of all small block binary maps; S7, use the permeability of all small block binary maps rate, draw the fractured formation permeability curve. Based on the color acoustic-electric imaging logging chart, the invention can accurately calculate the permeability curve of the fractured formation, make the evaluation of the fractured oil and gas reservoir more accurate, and better guide the exploration and development of the fractured oil and gas reservoir.

Description

technical field [0001] The invention relates to the field of oil and natural gas exploration and development, in particular to a method for calculating fractured formation permeability curves based on acousto-electric imaging logging diagrams. Background technique [0002] The effect of fractures on porosity is relatively small, but the effect on formation permeability is very large. In fractured formations (including fractured formations, fracture-vug formations, etc.), the permeability of the formation is mainly determined by the degree of development of fractures and vugs. Generally, formation permeability can be determined by the following three categories of methods: [0003] (1) Well testing and formation testing: The method of well testing and formation testing is to run the well testing instrument or modular formation tester into the specified depth of the oil and gas well, and calculate the permeability of the depth through the pressure data obtained by testing. T...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N15/08G01N21/84G01N29/02
Inventor 吴丰习研平陈梅姚聪何江丛林林
Owner SOUTHWEST PETROLEUM UNIV
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