NDLI: Laboratory Investigation of Hydraulic Fracture Behavior of Unconventional Reservoir Rocks

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Laboratory Investigation of Hydraulic Fracture Behavior of Unconventional Reservoir Rocks

Content Provider	MDPI
Author	Bobrova, Maria Stanchits, Sergey Shevtsova, Anna Filev, Egor Stukachev, Vladimir Shayahmetov, Tagir
Copyright Year	2021
Description	The heterogeneity of the rock fabric is a significant factor influencing the initiation and propagation of a hydraulic fracture (HF). This paper presents a laboratory study of HF created in six shale-like core samples provided by RITEK LLC collected from the same well, but at different depths. For each tested sample, we determined the breakdown pressure, the HF growth rate, and the expansion of the sample at the moment when the HF reaches the sample surface. Correlations were established between the HF parameters and the geomechanical characteristics of the studied samples, and deviations from the general relationships were explained by the influence of the rock matrix. The analysis of the moment tensor inversion of radiated acoustic emission (AE) signals allows us to separate AE signals with a dominant shear component from the signals with a significant tensile component. The direction of microcrack opening was determined, which is in good agreement with the results of the post-test X-ray CT analysis of the created HF. Thus, it has been shown that a combination of several independent laboratory techniques allows one to reliably determine the parameters that can be used for verification of hydraulic fracturing models.
Starting Page	292
e-ISSN	20763263
DOI	10.3390/geosciences11070292
Journal	Geosciences
Issue Number	7
Volume Number	11
Language	English
Publisher	MDPI
Publisher Date	2021-07-15
Access Restriction	Open
Subject Keyword	Geosciences Petroleum Engineering Acoustic Emission Hydraulic Fracturing Fracture Initiation Fracture Propagation Moment Tensor Source Mechanism
Content Type	Text
Resource Type	Article

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