Core-based prediction of lithologic stress contrasts in east Texas formations

Journal Article · Thu Dec 01 04:00:00 EST 1994 · SPE Formation Evaluation (Society of Petroleum Engineers); (United States)

DOI:https://doi.org/10.2118/21847-PA· OSTI ID:6918037

Thiercelin, M J; Plumb, R A ^[1]

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1. Schlumberger Cambridge Research (United Kingdom)

This paper presents an evaluation of two fundamentally different stress models: an elastic model, which is based on linear transverse isotropic elasticity, and a failure model, which is based on the concept that rocks are in an equilibrium state of shear failure. The models are evaluated by using physical parameters measured on core, pore pressure, and in-situ stress data from the Gas Research Institute (GRI) Staged Field Experiments (SFEs) in east Texas. It is shown that the elastic and failure models provide satisfactory predictions for most of the lithologies encountered. However, the failure model is more accurate for predicting stress in soft shales. An example of stress predictions based on log-derived elasticity parameters that gives stress estimations comparable to core-based predictions is also shown.

• OSTI ID: 6918037
• Journal Information: SPE Formation Evaluation (Society of Petroleum Engineers); (United States), Journal Name: SPE Formation Evaluation (Society of Petroleum Engineers); (United States) Vol. 9:4; ISSN 0885-923X; ISSN SFEVEG
• Country of Publication: United States
• Language: English

Related Subjects

02 PETROLEUM
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03 NATURAL GAS
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58 GEOSCIENCES
580000 -- Geosciences
CALCULATION METHODS
DEVELOPED COUNTRIES
FRACTURE MECHANICS
GEOLOGIC DEPOSITS
GEOLOGIC FORMATIONS
GEOLOGIC MODELS
MATHEMATICAL MODELS
MECHANICS
MINERAL RESOURCES
NATURAL GAS DEPOSITS
NORTH AMERICA
PETROLEUM DEPOSITS
RESERVOIR ROCK
RESOURCES
ROCK MECHANICS
STIMULATION
STRESS ANALYSIS
TEXAS
USA
WELL STIMULATION