Developing in situ stresses estimation algorithm using a hybrid numerical method based on local stress measurement-case study

2011 ◽  
pp. 1017-1022
Author(s):  
K Shahriar ◽  
M Nik ◽  
Z Khademian
Keyword(s):  
Numerical Method ◽  
Stress Measurement ◽  
Local Stress ◽  
Estimation Algorithm ◽  
In Situ Stresses ◽  
Hybrid Numerical Method

Integrated Application of Three In Situ Stress Measurement Techniques

2011 ◽  
Vol 301-303 ◽  
pp. 949-953
Author(s):  
Yuan Li ◽  
Lan Qiao ◽  
Zhi Li Sui
Keyword(s):  
Acoustic Emission ◽  
Hydraulic Fracturing ◽  
Stress Measurement ◽  
Stress Relief ◽  
In Situ Stress ◽  
In Situ Stresses ◽  
In Situ Stress Measurement ◽  
Iron Mine ◽  
Acoustic Emission Test

The CSIRO overcoring stress relief and hydraulic fracturing methods are the most popular methods used for the measurement of in-situ stress at depth. One major advantage of the CSIRO overcoring stress relief method is that the three dimensional state of stress can be obtained, but the measurement must be done in an excavated tunnel[1]. Hydraulic fracturing method can be carried out on the ground surface, but it assumed that one of the principal stresses direction is vertical[2,3]. In terms of the disadvantages of the two methods, the techniques based on core orientation and acoustic emission behavior of rocks are incorporated in the in-situ stress measurement in order to obtain the in-situ stress conditions at depth in Shuichang Iron Mine. According to the comparison of the measurement data obtained from the acoustic emission test in the laboratory and CSIRO overcoring stress relief measurement in the field, effectiveness of the acoustic emission test is confirmed. In addition, the relationships between in-situ stresses and tectonic settings are analyzed. Finally, the distribution of in-situ stresses in Shuichang Iron Mine is given, which provides a meaningful guideline for the following mining and design.

In-Situ Tectonic Stress Measurement from Wireline Straddle Packer MicroFrac Testing: A Case Study in a Carbonate Reservoir (U.A.E.)

2015 ◽  
Author(s):  
Noora Saeed Al Shehhi ◽  
Mohamed El-Hamawi ◽  
Dee Moronkeji ◽  
Javier Franquet ◽  
Steve Smith
Keyword(s):  
Stress Measurement ◽  
Tectonic Stress ◽  
Carbonate Reservoir

scholarly journals Finite Element Modelling of Coupled Fluid-Flow and Geomechanical Aspects for the Sustainable Exploitation of Reservoirs: The Case Study of the Cavone Reservoir

Geosciences ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 213
Author(s):  
Elena Benvenuti ◽  
Giulia Maurillo
Keyword(s):  
Finite Element ◽  
Fluid Flow ◽  
Computational Models ◽  
In Situ Stress ◽  
Stress Fields ◽  
Flow Equations ◽  
Coupled Problem ◽  
In Situ Stresses

The study of the seismogenic mechanical effects induced by oil & gas activities is a socially impacting issue of environmental engineering as well as a challenging task in computational geomechanics. It requires the solution of a coupled problem governed by poroelastic and fluid flow equations in a faulted domain in the presence of in situ stress fields. As a viable alternative to state-of-the-art academical computational models, the present study contributes a simplified methodology based on a commercial Finite Element multiphysics software. The focus is on the evaluation of the link between the oil & gas activities of the Cavone oilfield reservoir, located in North Italy and adjacent to the Mirandola fault, and the recent seismic sequence that struck Emilia in May 2012. An operational coupled fluid-geomechanical procedure is developed where the Cavone reservoir is subjected to the typical in situ stresses, and the nearby Mirandola fault is modelled as an impervious thin layer.

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