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Imaging log image solution cave information picking method based on connected domain equivalence pair processing

An imaging logging and connected domain technology, which is applied in the directions of instrumentation, calculation, character and pattern recognition, etc., can solve the problems of providing data support for the evaluation of cave-developed strata and reservoirs, and the inability to identify cave information, etc.

Inactive Publication Date: 2015-08-26
SOUTHWEST PETROLEUM UNIV
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Problems solved by technology

[0017] Aiming at the deficiencies of the prior art, the present invention provides a method for picking up karst cave information in imaging logging images based on connected domain equivalent pair processing, which can effectively solve the problems caused by not identifying karst cave information or not extracting karst cave information even though it can be identified. The problem of not being able to provide data support for the reservoir evaluation of strata with karst cave development

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  • Imaging log image solution cave information picking method based on connected domain equivalence pair processing
  • Imaging log image solution cave information picking method based on connected domain equivalence pair processing
  • Imaging log image solution cave information picking method based on connected domain equivalence pair processing

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[0099] Figure 28-34 It is an example of processing according to the above method. After the processing, the image layering and connected domain information are picked up: firstly, the surface porosity curve in the image depth domain ( Figure 32 ) combined with Figure 33 The image is layered according to the development degree of dissolved pores ( Figure 34 ); at the same time, pick up parameter information such as its length, width, inscribed circle radius, circumscribed circle radius, and roundness for each connected domain in the marked image; then mark the connected domain image ( Figure 34 ) according to the layered results in the depth domain, the inscribed circle radius distribution, circumscribed circle radius distribution, roundness distribution and related parameter information of the connected domain in each layer are statistically obtained (Table 1). Figure 25-27 And the quantitative parameter information of the connected domain of dissolution vugs in Table ...

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Abstract

The invention discloses an imaging log image solution cave information picking method based on connected domain equivalence pair processing, and belongs to the field of imaging log image solution cave information picking. The method comprises following steps: A. quantitatively marking connected domains of imaging log image solution caves based on equivalence pair processing, and picking parameter information of each connected domain, wherein the parameter information includes the length, the width, the circumscribed circle radius, the inscribed circle radius, the circularity and sorting coefficients of the connected domain; and B. layering an imaging log image based on solution cave development degrees reflected by surface porosity curves. The beneficial effects of the method are that an image connected domain marking algorithm based on equivalence pair processing is advantaged by rapid speed and non-repeated marking, and the solution cave connected domains can be accurately marked in a binary image by the use of the algorithm, so that object information of each connected domain can be picked, wherein the object information includes the cave size, the sorting coefficients, connected domain areas (surface porosities), the circularity and the like.

Description

technical field [0001] The invention belongs to the field of picking up karst cave information in imaging well logging images, and in particular relates to a method for picking up karst cave information in imaging well logging images based on equivalent pair processing of connected domains. Background technique [0002] 1. Definition of abbreviations and key terms [0003] 1.1 Connected domain: It refers to a set composed of several pixels. The pixels in this set have the following characteristics: the gray level of all pixels is less than or equal to the connected domain level; the pixels in the same connected domain are connected in pairs, that is, in Between any two pixels there exists a path consisting entirely of elements of this set. [0004] 1.2 Equivalent pair: Due to the influence of the shape of the cave and the scanning sequence, it is initially considered to be two disconnected areas. With the deepening of the marking scanning process, it is found that they actu...

Claims

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Application Information

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IPC IPC(8): G06K9/46
CPCG06V10/457G06V2201/07
Inventor 闫建平梁强李尊芝何旭张帆贾将崔宇诗言语
Owner SOUTHWEST PETROLEUM UNIV
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