in situ stress field inversion and its application in

Estimating In-Situ Stress, Fracture Properties and Fluid ...

2017-9-6 · 3. Stress Inversion The solutions of the moment tensor catalog were used to invert for the in-situ state of stress within the study region utilizing both the MSATSI software developed by Martinez-Garzon et al. (2014), which is based on the method of Hardebeck and Michael (2004, 2006), and the

CHARACTERIZATION OF IN-SITU STRESS AND …

2019-5-10 · situ stress variations on flexural modes in boreholes. These models will be used as the basis of data analysis and inversion routines for estimating the heterogeneous fracture distribution in fractured reservoirs from seismic and borehole field data provided by Shell. Fracture property distributions estimated from seismic data will be used to

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Finite Element Optimised Back Analysis of In Situ Stress ...

2012-7-1 · Highlights Model boundary conditions for in situ stress field inversion and excavation were analyzed. Comparative study of the mining-induced ground movement was carried out in two different stress fields. Mechanisms of ground movement were clarified. Current ground movement was evaluated and its development trend was predicted.

We N105 13 Fracture and Stress from in Situ, Full …

In this study full-azimuth amplitude (AVAZ) inversion was run for the target (Deep Carbonate reservoir, 4000-6000m). The fracture density volume and the volume of azimuth of axis of symmetry (minimum stress) were generated and property maps extracted along the reference horizons for comparison with the full-azimuth residual moveout (RMOZ ...

A modified initial in-situ Stress Inversion Method based ...

2015-12-1 · To improve the accuracy of an initial in-situ stress field determined by inversion, we describe a modi fied initial in-situ stress inversion method that uses partial least-squares regression based on FLAC3D. ... Inversion of initial in-situ stress field by the method of multivariate analysis and engineering application. Appl. Mech. Mater., 2011 ...

Research on In Situ Stress Measurement and Inversion, …

2017-12-19 · Seven points were selected to measure in situ stress, and the simulation software ANSYS was used to introduce a 3D geological model of Licun colliery, which has a thick coal seam and large mining height. A BP neural network was applied to the inversion of in situ stress, and distributions of σ1, σ2, and σ3 were achieved. This proved that a BP neural network can be applied to the inversion ...

Application of in situ stress estimation methods in ...

This method has been revised by Higgins to extend its application in determination of in situ stress under transverse isotropic (TI) conditions. In this approach, changes in the variation of elastic stiffness parameters induced by structural anisotropy are used to predict the …

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In situ stress state from inversion of fracturing data ...

2003-6-1 · The first observation is that the image log analyses give the same azimuth at the inversion method and confirm the geographic direction of the in situ stress field. However, the inclination is 36° versus 27°, a difference of 9°. The conclusion is that the in situ stress tensor is dipping with a strike of −53° and a slip of 9°.

Inversion of field data in fault tectonics to obtain the ...

Inversion of field data in fault tectonics to obtain the regional stress—III. A new rapid direct inversion method by analytical means ... Examples of application to actual fault slip data sets with good or poor variety of fault slip orientations are shown. ... From Bayesian Inversion of Focal Mechanism and In Situ Maximum Horizontal Stress ...

Analysis on Types of In Situ Stress Field and its Effect ...

By analyzing a large number of in-situ stress data measured in underground deep coal mines, two types of in-situ stress fields exit in deep coal mines, σHvh and σvHh, which influences on the stability of underground deep roadways are analyzed by means of numerical simulation. The results show that the destruction of surrounding rock varies greatly in equal value stress fields with different ...

Study of the in situ stress field in a deep valley and its ...

2021-1-28 · Zhao H, Ma F, Xu J, Guo J (2012) In situ stress field inversion and its application in mining-induced rock mass movement. Int J Rock Mech Min Sci 53:120–128. Article Google Scholar Zhong W, Chen XQ, He N, Yang T (2018) Ecological taxonomy of hydropower rock high slope and its environmental application in Southwest China.

On the Mechanical Stability of lnclined Wellbores | SPE ...

1996-6-1 · However, inclined and horizontal wells may be prone to mechanical instability problems associated with the in-situ stress field. Hence, an understanding and analytical design capability to manage wellbore stability in high in-situ stress fields should help realize the full benefits offered by current and emerging inclined well drilling technology.

In situ stress determination from inversion of hydraulic ...

The inversion methodology is demonstrated on a case history from the Kuparuk River field, Alaska as reported by and is shown to give good agreement with observed field data. Introduction Hydraulic fracturing is the best-known method of assessing the state of in situ stress at great depths.

In Situ Stresses & Stress Measurement

2018-5-15 · Stress is a concept which is fundamental to rock mechanics principles and applications. There are three basic reasons to understand stress in the context of engineering rock mechanics: There is a pre-existing stress state in the ground and we need to understand it, both directly and as the stress state applies to analysis and design.

In Situ Stress Inversion and Distribution Characteristics ...

The initial in situ stress field is the fundamental factor causing the deformation and failure of underground engineering and is an important basis for the feasibility analysis, design, and construction of underground engineering. However, it is difficult to obtain the whole in situ stress field of large-scale underground engineering in difficult and dangerous areas by field measurement.

[PDF] MSATSI: A MATLAB Package for Stress Inversion ...

Online Material: Figures of complete stress inversion results. The estimation of the stress‐field orientation from focal mechanisms of earthquakes is a relevant tool to understand crustal mechanics and the physics of earthquakes. In global seismology, Formal Stress Inversion (FSI) is a well‐established technique to study tectonic processes associated with the occurrence of large ...

Lateral inversion and its application

2021-9-23 · Lateral inversion is the reversal of an object when the image is formed in a flat mirror. This reversal is only in the direction perpendicular to the surface of the. Request PDF on ResearchGate Tutorial: a review of least-squares inversion and its application to geophysical problems. Geophysical inversion involves the.

GAN inversion method of an initial in situ stress field ...

2021-11-8 · The initial in situ stress field influences underground engineering design and construction. Since the limited measured data, it is necessary to obtain an optimized stress field. Although the ...

Impact of in situ stress and fault reactivation on seal ...

2019-5-9 · Group reservoir (Triassic) necessitates a greater understanding of the in situ stress field, while proposed natural gas storage and carbon sequestration schemes also require detailed stress field information. Using petroleum well data, the in situ stress field of the EISB has been characterised to assess the mechanical seal integrity.

In situ stress field inversion and its application in ...

In situ stress field inversion and its application in mining-induced rock mass movement Haijun Zhaon, Fengshan Ma, Jiamo Xu, Jie Guo Key Laboratory of Engineering Geomechanics, Institute of ...

Inferring the in situ stress regime in deep sediments: an ...

2014-6-6 · Knowledge of the ambient state of stress is of crucial importance for understanding tectonic processes and an important parameter in reservoir engineering. In the framework of the 2,500-m deep geothermal project of Bruchsal in the central part of the Upper Rhine Graben, new evidence is presented for the stress field in deep-seated sedimentary rocks.

2003-3-27 · Key words: in-situ stress in oil and gas field, three-dimensional prediction, intelligence algorithm, BP neural network, simulated annealing : TE21 ,,, . [J]. ( ...

Preliminary Results of In‐situ Stress Measurements along ...

2009-7-14 · Chongyuan ZHANG, Manlu WU, Qunce CHEN, Chunting LIAO, Piezomagnetic In‐situ Stress Monitoring and its Application in the Longmenshan Fault Zone, Acta Geologica Sinica - English Edition, 10.1111/1755-6724.12321, 88, 5, (1592-1602), (2014).

EFFICIENCY COEFFICIENT METHOD AND GROUND STRESS …

Rockburst is one of the main geological disasters during construction in deep and long tunnel. The whole process of ''gestation-occurrence-evolution'' is extremely complicated. The prediction of rockburst has become a worldwide difficult problem in underground engineering. It is of great significance to accurately reflect the change law of high ground stress and the influence of geological ...

Modeling and Inversion of Complex 3D Geologic Field …

2018-5-5 · Zhu Q., Liu J., Gao L., Chen Z., Liu X. (2018) Modeling and Inversion of Complex 3D Geologic Field Stress and Its Application in Rockburst Evaluation. In: Zhang L., Goncalves da Silva B., Zhao C. (eds) Proceedings of GeoShanghai 2018 International Conference: Rock Mechanics and Rock Engineering. GSIC 2018.

Reservoir Geomechanics

"Inversion technique to determine the In situ stress field from fracturing data." Journal of Petroleum Science and Engineering, 4, 127–141. Aadnoy, B. S. ( 1990b ).

The application of in-situ stress prediction based on ...

2021-10-8 · The application of in-situ stress prediction based on seismic data to shale gas development:A case study of Nanchuan(south Sichuan) area[J]. Geophysical and Geochemical Exploration, 2021, 45(3): 560-568.

Back Analysis of In-Situ Stress under Complicated ...

groundwater, buried depth and so on, its distribution shows randomness and complexity in space [2-5], and how to accurately reflect the in-situ stress is always a difficult problem in underground engineering [6]. The causes of in-situ stress field are very complex; it is difficult to use a single function to express.

In situ stress field inversion and its application in ...

Request PDF | In situ stress field inversion and its application in mining-induced rock mass movement | Based on a series of experiments in numerical simulation, the model boundary conditions for ...

Sensitivity of stress inversion of focal mechanisms to ...

2016-8-8 · These results are confirmed by findings from stress inversion applied to induced seismicity at The Geysers geothermal field in California. 2 Stress Tensor Inversion Inversion of earthquake focal mechanisms to determine the stress orientation and the stress ratio is a well-established technique [e.g., Angelier, 1984 ; Gephart and Forsyth, 1984 ...

Topographic effects on crustal stress around the Atera ...

2018-11-28 · The stress estimated from hydraulic fracturing test was inconsistent with a centroid moment tensor inversion result at the Atera fault area, Gifu Prefecture, central Japan. We demonstrate the stress obtained from a hydraulic fracturing mainly reflects topographic effect. We conduct a numeral computation of topographic stress using a formulation of the Boussinesq problem.