Experimental and numerical study of measuring in-situ stress in horizontal borehole by hydraulic fracturing method

Shenghao Piao,Sheng Huang,Qiang Wang,Baosong Ma

Tunnelling and Underground Space Technology（2023）

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摘要

•Established a model for measuring in-situ stress in horizontal boreholes (HF).•Fracture initiation position is observed in the middle section of the wellbore.•Breakdown, reopening and shut-in pressures are presented successively in the test.•Formulas for conservative calculation in practical engineering.

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关键词

In-situ stress measurement, Geotechnical investigation, Horizontal directional investigation, Hydraulic fracturing, Numerical simulation

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