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Go**Abstract**

The design of a hydraulic fracturing treatment typically requires using a computational model that provides rapid results. One such possibility is to use the so-called classical pseudo-3D (P3D) model with symmetric stress barriers. Unfortunately, the original P3D model is unable to capture effects associated with fracture toughness in the lateral direction due to the fact that the assumption of plane-strain (or local) elasticity is used. On the other hand, a recently developed enhanced P3D model utilizes full elastic interactions and is capable of incorporating either toughness or viscous regimes of propagation by using the corresponding asymptotic solution at the tip element. Since either the viscous or toughness asymptote is used, the intermediate regime is not described accurately. To deal with this problem, this study aims to implement the intermediate asymptotic solution into the enhanced P3D model. To assess the level of accuracy, the results are compared to a reference solution. The latter reference solution is calculated numerically using a fully planar hydraulic fracturing simulator (Implicit Level Set Algorithm (ILSA)), which also incorporates the asymptotic solution for tip elements that captures the transition from viscous to toughness regime.

**1. INTRODUCTION**

Hydraulic fracturing (HF) plays a crucial role in the petroleum industry, as it allows one to perform reservoir stimulation and intensify hydrocarbon production [1]. To design a HF treatment, an appropriate HF model needs to be utilized. The simplest model is the onedimensional Khristianovich-Zheltov-Geertsma-De Klerk (KGD) model [2], in which the fracture propagates in a plane, the elastic interactions are modelled assuming that plane strain conditions prevail, and the coupling between viscous fluid flow and elasticity is included. To represent the fracture geometry more realistically, the Perkins-Kern- Nordgren (PKN) model [3, 4] was developed to predict fracture propagation in a horizontally layered medium. The PKN model assumes that the fracture height is always equal to the thickness of the reservoir layer, the fracture opening in each vertical cross-section is taken to be elliptic, while the fluid pressure is calculated assuming that a plane strain condition holds in each cross-section. Given the fact that the PKN model does not allow for the height growth, the pseudo-3D (P3D) model, which permits height growth, has been developed [5]. Later, with the increase of the computational power, more accurate planar 3D models (PL3D) were developed [7, 8]. As follows from the name, the fracture is contained in one plane, where the fracture geometry within this plane is discretized using a two-dimensional grid. Since the KGD, PKN and P3D are essentially one-dimensional models, while all varieties of PL3D are two-dimensional, the CPU time increases dramatically. The PL3D models improve accuracy and open the possibility of capturing different fracture geometries. Recently, researchers have shifted their effort to investigate the interaction between multiple hydraulic fractures that are growing simultaneously [9], and to describe non-planar fracture propagation [10].

ARMA-2015-297

49th U.S. Rock Mechanics/Geomechanics Symposium

approximation, asymptotic solution, complex reservoir, computational, correspond, equation, fracture, fracture toughness, growth, hydraulic fracture, hydraulic fracturing, ILSA, intermediate regime, model, numerically, propagation, reservoir description and dynamics, simulator, situation, solution, toughness, toughness regime, Upstream Oil & Gas, well completion

SPE Disciplines:

Jeffrey, R. G. (CSIRO Energy Flagship) | Kear, J. (CSIRO Energy Flagship) | Kasperczyk, D. (CSIRO Energy Flagship) | Zhang, X. (CSIRO Energy Flagship) | Chuprakov, D. (Schlumberger Doll Research) | Prioul, R. (Schlumberger Doll Research) | Schouten, J. (BG/QGC)

**Abstract**

Experimental methods and results are presented for two-dimensional (2D) hydraulic fracturing experiments investigating the interaction and crossing of a hydraulic fracture with a pre-existing frictional discontinuity. The 2D experimental results include direct viewing and measurement of fracture path along with fracture and interface displacement. These data are compared directly to results from a 2D numerical hydraulic fracture model. The 2D experimental method involves propagating a hydraulic fracture from the centre of a 350 by 350 by 50 mm rock sample. Transparent shims are used to transmit the normal stress to the face of the sample and allow continuous digital video records to be made of the fracture growth and fracture interaction with the orthogonal discontinuity. Displacement of a grid drawn onto the sample face is measured by optical analysis methods, allowing the fracture and interface opening to be measured to better than 10-micron resolution. The data provide information about fracture crossing/arresting, path, and fracture and interface displacement with time. The numerical model matched the experiment in the sense of correctly predicting crossing in one case and blunting in the other. The model was unable to match the pressure from the experiments in siltstone, primarily because of not including effects from the pump and injection system compliance.

**1. INTRODUCTION**

The mechanics involved in a hydraulic fracture interacting with a natural fracture have been extensively studied over the past years because this process produces a number of first order effects on fracture growth. The crossing interaction can result in branching, offsetting, and even blunting of the hydraulic fracture tip, significantly changing the fracture growth, excess pressure, and width. A verified method to predict the outcome of a crossing interaction is therefore necessary in any fracture stimulation model intended for design and post-treatment analysis of hydraulic fractures placed in naturally fractured rock. This paper is primarily concerned with describing and illustrating the use of a new experimental method that allows two dimensional hydraulic fractures to be grown and studied as they interact with a frictional interface. Therefore, only a brief review of previous work on the topic of hydraulic fractures interacting with frictional discontinuities is provided.

ARMA-2015-439

49th U.S. Rock Mechanics/Geomechanics Symposium

**Abstract**

This paper discusses a new computational strategy for the analysis of inelastic processes in granular rocks subjected to varying levels of confinement. The purpose is to provide a flexible and efficient tool for the analysis of failure processes in geomechanical settings. The proposed model is formulated in the framework of Lattice Discrete Particle Models (LDPM), which is here calibrated to capture the behavior of a high-porosity rock widely tested in the literature: Bleurswiller sandstone. The procedure required to generate a realistic granular microstructure is described. Then, the micromechanical parameters controlling the fracture response at low confinements, as well as the plastic behavior at high pressures have been calibrated. It is shown that the LDPM model allows one to explore the effect of fine-scale heterogeneity on the inelastic response of rock cores, achieving a satisfactory quantitative performance across a wide range of stress conditions. The results suggest that LDPM analyses represent a versatile tool for the characterization and simulation of the mechanical response of granular rocks, which can assist the interpretation of complex deformation/failure patterns, as well as the development of continuum models capturing the effect of micro-scale heterogeneity.

**1. INTRODUCTION**

An accurate knowledge of the engineering properties of rocks is crucial for a variety of geomechanical problems, ranging from wellbore stability, to failure in rock slopes, underground excavations, and crustal faults [1]. While strength and deformation properties are usually obtained from a limited number of in situ and/or laboratory tests, their determination is invariably affected by considerable heterogeneities [2]. Such lack of homogeneity impacts engineering conclusions at all length scales and requires appropriate theoretical and computational tools.

Advanced numerical modeling represents a useful tool to explore how mechanical processes interact across length scales. Considerable advances in this area have based on Finite Element computations, where heterogeneities can be incorporated at both sample and site scales [3-5]. Nevertheless, to capture realistically the path-dependent response of geomaterials, continuum formulations tend to be characterized by a large number of parameters. If such constants lack clear connections with measurable attributes (e.g., grain size and sorting), their calibration becomes poorly constrained. Furthermore, the tendency of rock samples to undergo strain localization [6, 7] further prevents the validation and/or implementation of continuum models, requiring a direct link between strain localization and microstructural attributes [8].

ARMA-2015-575

49th U.S. Rock Mechanics/Geomechanics Symposium

asphaltene inhibition, asphaltene remediation, Behavior, Bleurswiller sandstone, compression, distribution, fracture, grain, granular rock, hydrate inhibition, Hydrate Remediation, hydraulic fracturing, LDPM, model, oilfield chemistry, paraffin remediation, particle, Production Chemistry, remediation of hydrates, Reservoir Characterization, reservoir description and dynamics, reservoir geomechanics, Response, rock, scale inhibition, scale remediation, shear, strain, test, triaxial, Upstream Oil & Gas, wax inhibition, wax remediation, well completion

SPE Disciplines:

- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Reservoir geomechanics (0.48)
- Production and Well Operations > Production Chemistry, Metallurgy and Biology > Inhibition and remediation of hydrates, scale, paraffin / wax and asphaltene (0.40)

**Abstract**

In this study, we numerically simulated thermal pressurization of a fault and investigated temperature and pore pressure changes during seismic slip. Thermal pressurization of fault fluid during slip tends to reduce frictional resistance by increasing pore pressure along the fault. We used a coupled Thermo-Hydro-Mechanical finite element model to simulate thermal pressurization by implementing a simple constitutive law to couple pore pressure changes with temperature rise due to frictional heating. The effects of hydraulic diffusivity and slipping zone thickness on pore pressure and temperature changes were investigated. The parametric study results showed that the weakening rate increases by decreasing the slipping zone thickness. Lower hydraulic diffusivity was shown to induce larger reduction in the effective normal stress.

**1. INTRODUCTION**

Once fault slip is initiated, two mechanisms with opposite impacts compete to control slip and rate of slip (Segall & Bradley, 2012). Shear-induced dilatancy of the fault core tends to increase fault permeability and consequently, to decrease fluid pressure. In contrary, fault heating inclines to increase fluid pressure and to weaken the fault (Rice 2006, Segal and Bradly 2012). An earthquake occurs if the thermal weakening process during the fault’s early slip takes over the shear-induced dilatency due to the release of tectonic stress (Wibberley & Shimamoto, 2005). Two thermal mechanisms, referred to as flash heating and thermal pressurization, can weaken the fault and decrease frictional resistance along the fault (J. R. Rice, 2006).

Flash heating occurs in rapid slips and mostly depends on the slip rate (Rice 2006). This mechanism deals with highly stressed micro-scale contacts during slip and decreases the fault friction coefficient. The real contact area (i.e., slip surface) is the sum of contact areas of all the asperities which is a small fraction of the macroscopic contact area. Since the stress supported by the asperities is larger than the stress carried by the fault surface, sliding leads to a large heat production and weakening of the contact (Rice, 1999; Tullis & Goldsby, 2003; Prakash, 2004; Rice, 2006; Beeler et al., 2008).

ARMA-2015-298

49th U.S. Rock Mechanics/Geomechanics Symposium

change, coefficient, effect, fault, frictional, frictional heating, geophysical research, heating, hydraulic diffusivity, increase, model, pore, Reservoir Characterization, reservoir description and dynamics, reservoir geomechanics, Rice, seismic slip, shear, slip, thermal pressurization, thermal pressurization process, Thickness, Upstream Oil & Gas

SPE Disciplines: Reservoir Description and Dynamics > Reservoir Characterization > Reservoir geomechanics (1.00)

**Abstract**

Telegraph Hill has a colorful history extending back more than 150 years, and the geology and legacy of this promontory currently haunt the urban corridors that closely line its slopes. Telegraph Hill is underlain by resistant Franciscan Complex greywacke sandstone, largely unsheared, and grossly stable. The high quality rock in close proximity to the burgeoning shipping industry was a valuable commodity in the mid- to late-1800s, and the sandstone was mined extensively for seawalls, jetties, roads, and for ship ballast. The quarrying resulted in near-vertical rock faces up to 50m in height along the eastern slopes. The resistant sandstone exposed along many of the old quarried slopes remains standing to this day at near-vertical angles, with very slow retreat rates that resulted in builders gaining confidence in ‘snuggling’ close to these old slopes. The high, steep walls experienced blast fracturing and relaxation jointing from the removal of large volumes of the hillside, resulting in periodic, hazardous rockslides that serve as a persistent reminder of the quarrying legacy.

**1. INTRODUCTION**

Telegraph hill received its name in the mid-1800s from the signal flags, or semaphore, located at the top of the hill that were raised by the lookout to inform residents of incoming ships [1]. Prior to the gold rush era, Telegraph Hill was a uniformly sloped, stable hillside, as illustrated in artist George H. Burgess rendering of the hill in 1849 (Fig. 1) [2]. However, this gently to moderately inclined, rolling hillside topography was dramatically and forever altered when the eastern slope experienced approximately 50 years of intense quarrying activity. The geology of this hillside, with resistant sandstone outcrops along the eastern slope, proved to be an invaluable and irresistible commodity for San Francisco’s gold rush and post-gold rush boom. The resistant and hard rock qualities that made this rock so valuable for a variety of construction related activities are also the qualities that have preserved these steep quarried faces, some virtually unchanged, for nearly 150 years. The resistant rock lured builders into placing structures dangerously close to the tops and toes of these slopes, leaving little margin for error. Telegraph Hill continues to experience hazardous rockslides and rockfalls along an approximate 1 km (0.7-mile) stretch of the southeastern, eastern and northeastern portions of the hill.

ARMA-2015-820

49th U.S. Rock Mechanics/Geomechanics Symposium

Anchor, Earthquake, failure, franciscan complex, Hill, Lombard Street, Reservoir Characterization, reservoir description and dynamics, rock, rock anchor, rockslide, San Francisco, sandstone, shale, site, slab, slope, Street, structural geology, terrane, Upstream Oil & Gas, vallejo street, vallejo street rockslide

SPE Disciplines: Reservoir Description and Dynamics > Reservoir Characterization > Exploration, development, structural geology (1.00)

**Abstract**

We present a new definition of a brittleness index which is used as a criterion for candidate selection of rock intervals for hydraulic fracturing. The new index is a combination of material strength parameters and insitu stresses. It was derived from an analytical model of hydraulic fracturing in weak formations of varying ductility. The model is based on Mohr-Coulomb dislocations that are placed in the effective centres of the complete slip process that is distributed around the crack tip. The new brittleness index varies between 0 and 1 with the one limit to correspond to brittle propagation and the other limit to a fracture that requires infinite energy release per unit advance. The values between 0 and 1 correspond to fracture propagation of increasing ductility from brittle to small scale and finally to large scale yielding. The results are particularly interesting for predicting the propagation of axial fractures in the horizontal direction and their confinement in the vertical direction.

**1. INTRODUCTION**

The Brittleness index of rocks is often used as a criterion for candidate selection of rock intervals for hydraulic fracturing in shale reservoirs [1]. Several definitions for measuring the brittleness of the rocks were proposed based on different mechanical properties of rocks that are derived from the stress-strain curve or from correlations with physical properties [2, 3, 4]. An inherent problem with some proposed definitions, which are based on simple definitions that were not derived from scientific principles but from correlations that are fitted on dynamic measurements, is that they do not follow the expected trend with some varying parameters such as the confining pressure [1]. Therefore, in unconventional shale reservoirs it is important to understand how brittleness can be represented and be used for practical applications of hydraulic fracturing. An extended report and comparisons of 9 different definitions of brittleness numbers based on uniaxial, triaxial and Brazilian tests on gas shale and overburden analogues were presented in [5].

ARMA-2015-489

49th U.S. Rock Mechanics/Geomechanics Symposium

brittleness, brittleness index, complex reservoir, correspond, crack, dislocation, ductility, fracture, hydraulic fracture, hydraulic fracturing, material, model, oil shale, Papanastasiou, plastic, propagation, Reservoir Characterization, reservoir description and dynamics, reservoir geomechanics, rock, shale gas, shale oil, small scale, strength, stress, toughness, Upstream Oil & Gas, well completion, yielding

SPE Disciplines:

- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > Shale oil (1.00)
- Reservoir Description and Dynamics > Unconventional and Complex Reservoirs > Shale gas (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Reservoir geomechanics (1.00)

Phillips, A. J. (Montana State University) | Gerlach, R. (Montana State University) | Cunningham, A. B. (Montana State University) | Spangler, L. (Montana State University) | Hiebert, R. (Montana Emergent Technologies) | Kirksey, J. (Schlumberger Carbon Services) | Esposito, R. (Southern Company)

**Abstract**

Novel strategies aimed at increasing underground storage security by sealing unwanted leakage pathways near wellbores are currently under development. One such strategy is to engineer the process known as microbially-induced calcite precipitation (MICP) to achieve mineral-based sealing of fractures and reduction of permeability. Laboratory-based MICP research reported herein has demonstrated the ability to effectively reduce permeability in multiple 2.54 cm (1 inch) diameter Berea sandstone cores, seal fractures in shale cores, and seal a hydraulically fractured, 74 cm (29 inch) diameter sandstone core. This research involves integration of experimental testing and simulation modeling. In all experiments reported, *Sporosarcina pasteurii* biofilms were established and an injection strategy developed to optimize CaCO_{3} precipitation induced via enzymatic urea hydrolysis. Permeability reductions of 3-5 orders of magnitude were demonstrated. A field demonstration project successfully sealed a fractured sandstone formation located 341 m (1118 feet) below ground surface with MICP using conventional field delivery technology. MICP is a developing novel technology with the potential to seal fractures to reduce the risk of leakage from the subsurface.

**1. INTRODUCTION**

To manage the environmental risk of storing carbon dioxide in geologic formations, unconventional oil & gas resource development and nuclear waste disposal, novel methods are needed to prevent leakage of subsurface fluids to functional overlying drinking water aquifers or the ground surface. One method currently being explored on multiple scales (from laboratory to field) is the use of microbially-induced calcite precipitation (MICP) [1-8]. This method utilizes microbes that have the capability to alter the chemical environments in host rock pore spaces. One example is the use of ureolytic microorganisms that produce enzymes to create saturation conditions favorable for promoting MICP [9- 11]. MICP has been proposed for a number of subsurface engineering applications including preventing gas leakage by sealing fractures to secure geologic storage of CO_{2} or other fluids, improving wellbore integrity, and stabilizing fractured and unstable porous media [3, 6, 12-16].

ARMA-2015-490

49th U.S. Rock Mechanics/Geomechanics Symposium

calcium carbonate, core, Cunningham, diameter, field, flow in porous media, Fluid Dynamics, fracture, Gerlach, hydraulic fracturing, leakage, MICP, microbially-induced calcite precipitation, permeability, Phillips, precipitation, reduction, research, Reservoir Characterization, reservoir description and dynamics, sandstone, spangler, structural geology, technology, Upstream Oil & Gas, well completion, Wellbore Design, wellbore integrity

Oilfield Places:

- North America > United States > Wyoming > Green River Basin (0.94)
- North America > United States > Utah > Green River Basin (0.94)
- North America > United States > North Dakota > Williston Basin > Bakken Shale (0.94)

SPE Disciplines:

- Well Drilling > Wellbore Design > Wellbore integrity (1.00)
- Well Completion > Hydraulic Fracturing (1.00)
- Reservoir Description and Dynamics > Reservoir Fluid Dynamics > Flow in porous media (1.00)
- Reservoir Description and Dynamics > Reservoir Characterization > Exploration, development, structural geology (1.00)

**Abstract**

Acoustic emission (AE) analyses have been used for decades for rock mechanics testing, but because AE systems are not typically calibrated, the absolute sizes of dynamic microcrack growth and other physical processes responsible for the generation of AEs are poorly constrained. We describe a calibration technique for the AE recording system as a whole (transducers + amplifiers + digitizers + sample + loading frame) that uses the impact of a 4.76 mm free-falling steel ball bearing as a reference source. We demonstrate the technique on a 76 mm diameter cylinder of westerly granite loaded in a triaxial deformation apparatus at 40 MPa confining pressure. In this case, the ball bearing is dropped inside a cavity within the sample while inside the pressure vessel. We compare this reference source to conventional AEs generated during shear loading of a saw-cut simulated fault in a second granite sample at confining pressures up to 120 MPa. All located AEs occur on the saw-cut surface and have moment magnitudes ranging from M -5.7 down to at least M -8. Dynamic events that rupture the entire simulated fault surface (stick-slip events) have measurable stress drop and macroscopic slip, and radiate seismic waves similar to those from a M -3.5 earthquake. The largest AE events that do not rupture the entire fault are M -5.7. For these events, we also estimate the corner frequency (200- 300 kHz), and we assume the Brune earthquake source model to estimate source dimensions of 4-6 mm. These AE sources are larger than the 0.2 mm grain size and smaller than the 76 × 152 mm fault surface. Finally, we compare our results to other calibrated AE studies performed on different loading machines and discuss reasons for the observed maximum AE magnitude.

**1. INTRODUCTION**

Acoustic emissions (AEs) are tiny seismic events thought to be caused by microcracking or slip instability on the grain scale. They are sometimes recorded during rock mechanics experiments to monitor fracture and faulting processes [1]. In slow loading experiments on rock samples containing pre-existing artificial faults, AEs tend to cluster around stick-slip instabilities (dynamic events that involve slip of the entire fault surface) in a manner reminiscent of foreshocks and aftershocks. It has long been assumed that AEs are in some sense small-scale versions of earthquakes and that they can provide insights into earthquake mechanics [2- 5]. Yet, while earthquakes are routinely quantified by their seismic moment, only rarely is the absolute size of an AE determined. This is because AE recording systems are not typically calibrated.

ARMA-2015-204

49th U.S. Rock Mechanics/Geomechanics Symposium

acoustic emission, AE source, amplitude, ball, ball impact, corner frequency, Drop, Earthquake, estimate, fault, frequency, Geophy, Reservoir Characterization, reservoir description and dynamics, sample, seismic processing and interpretation, source, spectra, spectrum, stick-slip instability, stress, surface, Upstream Oil & Gas

SPE Disciplines: Reservoir Description and Dynamics > Reservoir Characterization > Seismic processing and interpretation (1.00)

**Abstract**

We implemented the object-based method using marked point processes to generate a natural fracture network honoring an assumed fracture characteristics’ distribution where the fractures are two-dimensional zero-thickness circular disks. Fractures are divided into two groups based on their alignment which is acquired by Monte Carlo sampling from two Gaussian distributions with 90-degree shift in the mean value; this hypothesis is validated considering the frequently observed checker-board fracture patterns in the outcrops. The growth of the fractures in the second group or the secondary (daughter) fractures can be terminated by a criterion derived from the distribution of the fractures in the first group or the primary (parent) fractures. For data assimilation purposes, a smooth seismic distribution for fracture density is mimicked by simple krigging which inherently possesses a smoothing nature. Then, the generated seismic data is honored by revising the fracture distribution such that in areas with less fracture density we have fewer fractures. This work provides a novel, yet easy and fast workflow to stochastically model a natural fracture network following the attributes offered by seismic data and concludes an orthogonal or bidirectional fracture pattern. This pattern can be easily extended for multi-directional fracture patterns using the proposed framework.

**1. INTRODUCTION**

One of the big concerns in fractured reservoirs characterization is the representation of the subsurface fractures due to large uncertainty and extremely limited direct measurements pertaining to exact spatial distribution of fractures. Stochastic approaches allow us to realize fractures discretely [1]. This approach embraces three different methods, object based simulation, hierarchical fracture modeling, and multiple point statistics based algorithms [1]. The current work concentrates on the first method.

ARMA-2015-223

49th U.S. Rock Mechanics/Geomechanics Symposium

angle, Artificial Intelligence, azimuth, azimuth angle, complex reservoir, criterion, distribution, fracture, fracture distribution, fracture termination, grid, grid cell, group, histogram, hydraulic fracturing, Monte Carlo, natural fracture network, probability, reservoir description and dynamics, simulation of human behavior, termination, termination criterion, termination probability, Upstream Oil & Gas, well completion

Oilfield Places:

- North America > Canada > Saskatchewan > Dakota Formation (0.98)
- North America > Canada > Alberta > Dakota Formation (0.98)

SPE Disciplines:

Technology: Information Technology > Artificial Intelligence > Cognitive Science > Simulation of Human Behavior (0.60)

**Abstract**

A large number of world-class high arch dams are currently under construction or will soon be built in West China. These dam projects are usually located in high mountains and deep valleys with complicated geological conditions. The global stability and safety of dam and foundation is a major concern. Geo-mechanical model test is one of the main methods to study this problem. Three test methods of geo-mechanical model are presented in this paper. The overloading method is used to test the overload capability. The strength reduction method is used to study the strength reserve capability. The comprehensive method combines overloading and strength reduction methods. According to the model similarity theory, the safety coefficients by three kinds of model test are established, and the testing technique based on temperature-dependent similar material for simulating strength reduction is also proposed. These basic studies offered the theory and technical supports for dam model test. Finally, the 3D geomechanical model test has been applied to Xiaowan arch dam (294.5m high) to study the global stability, failure process and mechanisms. These research results have been applied in practical project and provide an important scientific basis for the evaluation of stability, safety and reinforcement effect.

**1. INTRODUCTION**

With the development of hydropower projects to implement the strategy of electricity transmission from western region to eastern region in China, a number of high dams and large reservoirs are under construction or to be built. These large projects are mainly located on the great rivers in West China, characterized by complicated topographical and geological conditions. The hydropower projects include Xiaowan arch dam (294.5 m high) on the Lancang River, Xiluodu arch dam (278 m high) and Jinping I arch dam (305 m high) on the Yalong River, Baihetan arch dam (284 m high) and Longpan arch dam (278 m high) on the Jinsha River, Dagangshan arch dam (210 m high) on the Dadu River, and so on. Analyzing and evaluating the stability and safety of these large projects is currently need in engineering fields and academic studies [1-3]. Geo-mechanical model test is one of the main methods to address this issue [4].

ARMA-2015-146

49th U.S. Rock Mechanics/Geomechanics Symposium

Chinese, coefficient, dam, foundation, geo-mechanical model, geo-mechanical model test, geomechanical model, geomechanical model test, management and information, material, method, model, project, Reservoir Characterization, reservoir description and dynamics, reservoir geomechanics, rock, safety coefficient, stability, strength, Strength Reduction, test, Upstream Oil & Gas, Wellbore Design, wellbore integrity

SPE Disciplines:

Thank you!