High Fidelity Hybrid Method for In Situ Borehole Stress Determination Final Report

Technical Report · Sat Sep 01 04:00:00 EDT 2018

DOI:https://doi.org/10.2172/1760397· OSTI ID:1760397

Ingraham, Mathew Duffy ^[1]; Choens, Robert Charles ^[1]; Dewers, Thomas ^[1]; Sobolik, Steven R. ^[1]; Wilson, Jennifer ^[1]; Herrick, Courtney G. ^[1]; Lee, Moo Y. ^[1]; Haimson, Bezelel C. ^[2]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
2. Univ. of Wisconsin, Madison, WI (United States)

The state of stress in the earth is complicated and it is difficult to determine all three components and directions of the stress. However, the state of stress affects all activities which take place in the earth, from causing earthquakes on critically stressed faults, to affecting production from hydraulically fractured shale reservoirs, to determining closure rates around a subterranean nuclear waste repository. Current state of the art methods commonly have errors in magnitude and direction of up to 40%. This is especially true for the intermediate principal stress. This project seeks to better understand the means which are used to determine the state of stress in the earth and improve upon current methods to decrease the uncertainty in the measurement. This is achieved by a multipronged experimental investigation which is closely coupled with advanced constitutive and numeric modeling.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• DOE Contract Number: AC04-94AL85000; NA0003525
• OSTI ID: 1760397
• Report Number(s): SAND--2018-10479; 668119
• Country of Publication: United States
• Language: English

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58 GEOSCIENCES