The maximum (Sh) and minimum (Sh) horizontal stresses are essential parameters for the well planning and hydraulic fracturing design. These stresses can be accurately measured using field tests such as the leak-off test, step-rate test, and so forth, or approximated using physics-based equations. These equations require measuring some geomechanical parameters such as the static Poisson ratio and static elastic modulus via experimental tests on retrieved core samples.
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December 2021
The least principal stresses of downhole formations include minimum horizontal stress ( ) and maximum horizontal stress ( ). and are substantial parameters that significantly affect the design and optimization of the drilling process. These stresses can be estimated using theoretical equations in addition to some field tests, i.
View Article and Find Full Text PDFDetermination of in-situ stresses is essential for subsurface planning and modeling, such as horizontal well planning and hydraulic fracture design. In-situ stresses consist of overburden stress (σ), minimum (σ), and maximum (σ) horizontal stresses. The σ and σ are difficult to determine, whereas the overburden stress can be determined directly from the density logs.
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