Visual evaluation method for fracturing transformation effect of oil and gas well

By analyzing the connected component features of downhole video frames, perforation confidence and cross-perforation matching risk values ​​are constructed, and the HEVC algorithm parameters are dynamically adjusted. This solves the problem of inaccurate perforation area measurement in downhole video transmission and improves the evaluation accuracy and transmission stability of fracturing effects.

CN122093535AActive Publication Date: 2026-05-26DAQING YILAI TESTING TECH SERVICE CO LTD
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Patent Information

Application Number
CN202610555254.2
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2026-04-24
Publication Date
2026-05-26
Estimated Expiration
2046-04-24

AI Technical Summary

Technical Problem

Existing technologies do not fully consider the movement characteristics and perforation similarity of downhole television in downhole video transmission, resulting in low accuracy of perforation area measurement and affecting the accuracy of fracturing effect evaluation.

Method used

By analyzing the connected component features in video frames, we construct the perforation confidence and cross-perforation matching risk value, dynamically adjust the merange parameter of the HEVC algorithm, optimize the encoding and transmission process, and ensure the integrity of the perforation boundary contour.

Benefits of technology

It improves the accuracy of perforation area measurement and fracturing effect evaluation, reduces errors in the encoding and transmission process, and enhances the stability and efficiency of video transmission.

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Abstract

The invention relates to the technical field of image transmission, in particular to an oil and gas well fracturing transformation effect visual evaluation method which comprises the steps that video frames and cable lengths in the oil and gas well measurement process are collected in real time; extracting an analysis frame in the video frame; acquiring a perforation connected domain based on the edge feature, the gray feature and the shape feature of each connected domain in each analysis frame; based on the number of perforation connected domains in each analysis frame, judging whether to adopt a default merge parameter to carry out coding transmission or not; if not, optimizing a default merge parameter of each analysis frame based on the density degree, the difference degree and the inter-frame displacement of the perforation in each analysis frame and the cable length, and further carrying out coding transmission on all video frames in an analysis interval in which each analysis frame is located; and evaluating the fracturing transformation effect based on the transmitted video frames. According to the method and the device, the accuracy of fracturing transformation effect evaluation is improved by adaptively adjusting the merge parameters.
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