A method for determining the effective hydraulic fracture influence radius

By drilling observation boreholes on both sides of the fracturing borehole and combining this with the determination of water volume changes, and by iteratively drilling supplementary observation boreholes, the problem of determining the radius of hydraulic fracturing was solved, achieving rapid and accurate determination and reducing construction costs and risks.

CN122148265APending Publication Date: 2026-06-05SHAANXI XUNYI QINGGANGPING MINING CO LTD +4
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
SHAANXI XUNYI QINGGANGPING MINING CO LTD
Filing Date
2025-12-23
Publication Date
2026-06-05

AI Technical Summary

Technical Problem

Existing technologies cannot quickly, accurately, and reliably determine the effective radius of influence of hydraulic fracturing under specific geological and engineering conditions, which affects the safety, economy, and reliability of fracturing projects.

Method used

The method involves drilling first and second observation boreholes on both sides of the fracturing borehole to measure the water volume changes. The effective influence radius is determined by combining the measured values ​​with a preset threshold. The method is then used to iteratively drill additional observation boreholes for precise quantitative analysis, thereby reducing the initial construction workload and cost.

Benefits of technology

The ability to quickly and accurately determine the effective radius of influence of hydraulic fracturing reduces the damage to the rock mass caused by drilling, improves the accuracy of the measurement results, and avoids increased engineering risks and costs due to excessive drilling.

✦ Generated by Eureka AI based on patent content.

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Abstract

The present application relates to coal mining technical field, provide a kind of method for determining the effective influence radius of hydraulic fracturing, comprising the following steps: S1, drilling fracturing borehole in target rock formation;S2, respectively drilling first observation borehole and second observation borehole on the two sides of the fracturing borehole, the interval D1 between the first observation borehole and the fracturing borehole is less than the interval D2 between the second observation borehole and the fracturing borehole;S3, the original water quantity of the first observation borehole and the second observation borehole is determined, then the fracturing borehole is subjected to hydraulic fracturing;S4, according to the water quantity change of the first observation borehole and the second observation borehole, determine the effective influence radius R of hydraulic fracturing.The method greatly reduces the initial workload and material cost of drilling construction, hole sealing and instrument installation, so that the field test work can be quickly started and completed, and the time for determining the radius of hydraulic fracturing is greatly reduced.
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