Compressive and tensile failure at high fluid pressure where preexisting fractures have cohesive strength, with application to the San Andreas Fault

1996 ◽  
Vol 101 (B11) ◽  
pp. 25499-25509 ◽  
Author(s):  
Robert O. Fournier
Keyword(s):  
San Andreas Fault ◽  
Fluid Pressure ◽  
Cohesive Strength ◽  
Tensile Failure ◽  
San Andreas ◽  
High Fluid ◽  
High Fluid Pressure

Mélanges and disrupted rocks at the leading edge of the Humber Arm Allochthon, W. Newfoundland Appalachians: Deformation under high fluid pressure

2019 ◽  
Vol 74 ◽  
pp. 216-236 ◽  
Author(s):  
Ryan A. Lacombe ◽  
John W.F. Waldron ◽  
S. Henry Williams ◽  
Nicholas B. Harris
Keyword(s):  
Fluid Pressure ◽  
Leading Edge ◽  
High Fluid ◽  
High Fluid Pressure

scholarly journals Permeability Evolution of an Intact Marble Core during Shearing under High Fluid Pressure

Geofluids ◽  
2021 ◽  
Vol 2021 ◽  
pp. 1-18
Author(s):  
Yuan Wang ◽  
Yu Jiao ◽  
Shaobin Hu
Keyword(s):  
Normal Stress ◽  
Laser Scanning ◽  
Shear Failure ◽  
Fluid Pressure ◽  
Shear Displacement ◽  
Permeability Evolution ◽  
Fracture Permeability ◽  
Effective Normal Stress ◽  
High Fluid ◽  
High Fluid Pressure

The progressive shear failure of a rock mass under hydromechanical coupling is a key aspect of the long-term stability of deeply buried, high fluid pressure diversion tunnels. In this study, we use experimental and numerical analysis to quantify the permeability variations that occur in an intact marble sample as it evolves from shear failure to shear slip under different confining pressures and fluid pressures. The experimental results reveal that at low effective normal stress, the fracture permeability is positively correlated with the shear displacement. The permeability is lower at higher effective normal stress and exhibits an episodic change with increasing shear displacement. After establishing a numerical model based on the point cloud data generated by the three-dimensional (3D) laser scanning of the fracture surfaces, we found that there are some contact areas that block the percolation channels under high effective stress conditions. This type of contact area plays a key role in determining the evolution of the fracture permeability in a given rock sample.

Abnormally High Fluid Pressure: Survey of Some Basic Principles: ERRATUM

AAPG Bulletin ◽  
1980 ◽  
Vol 64 ◽  
Author(s):  
William J. Plumley
Keyword(s):  
Fluid Pressure ◽  
Basic Principles ◽  
High Fluid ◽  
High Fluid Pressure

On the High Fluid Pressure in Hydrostatic Forming for Sheet Metal

2020 ◽  
Vol 21 (12) ◽  
pp. 2223-2233
Author(s):  
Thu Thi Nguyen ◽  
Trung Dac Nguyen
Keyword(s):  
Sheet Metal ◽  
Fluid Pressure ◽  
High Fluid ◽  
High Fluid Pressure

scholarly journals 3D Printed Reconfigurable Modular Microfluidic System for Generating Gel Microspheres

Micromachines ◽  
2020 ◽  
Vol 11 (2) ◽  
pp. 224
Author(s):  
Xiaojun Chen ◽  
Deyun Mo ◽  
Manfeng Gong
Keyword(s):  
3D Printing ◽  
Complex Systems ◽  
Sodium Alginate ◽  
Fluid Pressure ◽  
Microfluidic System ◽  
End User ◽  
Material Synthesis ◽  
High Fluid ◽  
3D Printed ◽  
High Fluid Pressure

Integrated microfluidic systems afford extensive benefits for chemical and biological fields, yet traditional, monolithic methods of microfabrication restrict the design and assembly of truly complex systems. Here, a simple, reconfigurable and high fluid pressure modular microfluidic system is presented. The screw interconnects reversibly assemble each individual microfluidic module together. Screw connector provided leak-free fluidic communication, which could withstand fluid resistances up to 500 kPa between two interconnected microfluidic modules. A sample library of standardized components and connectors manufactured using 3D printing was developed. The capability for modular microfluidic system was demonstrated by generating sodium alginate gel microspheres. This 3D printed modular microfluidic system makes it possible to meet the needs of the end-user, and can be applied to bioassays, material synthesis, and other applications.

An Earthquake Instability Model Based on Faults Containing High Fluid-pressure Compartments

1995 ◽  
pp. 717-745
Author(s):  
David A. Lockner ◽  
James D. Byerlee
Keyword(s):  
Fluid Pressure ◽  
Model Based ◽  
High Fluid ◽  
High Fluid Pressure

The San Andreas Fault Zone Drilling Project: Scientific Objectives and Technological Challenges

1995 ◽  
Vol 117 (4) ◽  
pp. 263-270 ◽  
Author(s):  
S. H. Hickman ◽  
L. W. Younker ◽  
M. D. Zoback ◽  
G. A. Cooper
Keyword(s):  
Fault Zone ◽  
San Andreas Fault ◽  
Fractured Rock ◽  
Fluid Pressure ◽  
Plate Boundary ◽  
Fault System ◽  
Earthquake Activity ◽  
Scientific Drilling ◽  
San Andreas ◽  
San Andreas Fault System

We are leading a new international initiative to conduct scientific drilling within the San Andreas fault zone at depths of up to 10 km. This project is motivated by the need to understand the physical and chemical processes operating within the fault zone and to answer fundamental questions about earthquake generation along major plate-boundary faults. Through a comprehensive program of coring, fluid sampling, downhole measurements, laboratory experimentation, and long-term monitoring, we hope to obtain critical information on the structure, composition, mechanical behavior and physical state of the San Andreas fault system at depths comparable to the nucleation zones of great earthquakes. The drilling, sampling and observational requirements needed to ensure the success of this project are stringent. These include: 1) drilling stable vertical holes to depths of about 9 km in fractured rock at temperatures of up to 300°C; 2) continuous coring and completion of inclined holes branched off these vertical boreholes to intersect the fault at depths of 3, 6, and 9 km; 3) conducting sophisticated borehole geophysical measurements and fluid/rock sampling at high temperatures and pressures; and 4) instrumenting some or all of these inclined core holes for continuous monitoring of earthquake activity, fluid pressure, deformation and other parameters for periods of up to several decades. For all of these tasks, because of the overpressured clay-rich formations anticipated within the fault zone at depth, we expect to encounter difficult drilling, coring and hole-completion conditions in the region of greatest scientific interest.

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