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Supporting Data: Laboratory Experiments Contrasting Growth of Uniformly and Nonuniformly-Spaced Hydraulic Fractures

Gunaydin, Delal and Peirce, Anthony and Bunger, Andrew (2021) Supporting Data: Laboratory Experiments Contrasting Growth of Uniformly and Nonuniformly-Spaced Hydraulic Fractures. [Dataset] (Submitted)

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Abstract

Hydraulic fractures that grow in close proximity to one other interact and compete with one another for fluid that is injected to the wellbore, leading to dominance of some fractures and suppression of others. It is ubiquitously encountered in stimulation of horizontal wells in the petroleum industry and it also bears possible relevance to emplacement of multiple laterally-propagating swarms of magma-driven dykes. Motivated by a need to validate mechanical models, this paper focuses on laboratory experiments and their comparison to simulation results on the behavior of multiple, simultaneously growing hydraulic fractures. The experiments entail the propagation of both uniformly and nonuniformly spaced hydraulic fractures by injection of glucose or glycerin-based solutions into transparent (polymethyl methacrylate) blocks. Observed fracture growth is then compared to predictions of a fully coupled, parallel-planar 3D hydraulic fracturing simulator. Results confirm the suppression of inner fractures when the spacing between the fractures is uniform. For certain non-uniform spacing, both experiments and simulations show mitigated suppression of the central fractures. Specifically, the middle fracture in a 5-fracture array grows nearly equally to the outer fractures from the beginning of injection. Furthermore, with some delay, the other two fracture that are suppressed with uniformly-spaced configurations grow, and eventually achieve a velocity exceeding the other three fractures in the array. Hence, the experiments give first laboratory evidence of a model-predicted behavior wherein certain nonuniform fracture spacings result in drastic increases in the growth of all fractures within the array.

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Details

Item Type: Dataset
Status: Submitted
Creators/Authors:
CreatorsEmailPitt UsernameORCID
Gunaydin, Delaldeg90@pitt.edudeg90
Peirce, Anthonypeirce@math.ubc.ca
Bunger, Andrewbunger@pitt.edubunger0000-0002-0696-7066
Date: 2021
DOI or Unique Handle: 10.18117/q4t3-hd90
Schools and Programs: Swanson School of Engineering > Civil and Environmental Engineering
Type of Data: Database
Copyright Holders: Delal Gunaydin, Anthony Peirce, Andrew Bunger
Date Deposited: 08 Dec 2020 03:36
Last Modified: 08 Dec 2020 18:06
URI: http://d-scholarship.pitt.edu/id/eprint/40008

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