To study the microscopic seepage mechanism of gas and water in fractured sandstone reservoirs low porosity, this kind reservoir Keshen field, Kuqa depression Tarim basin China, was taken as an example. Based on rock samples visualization technology, nuclear magnetic resonance experiments saturated water–gas drive CT scanning gas–water were conducted. The invasion during development simulated. S...

We present hydro-mechanical measurements that characterize shear on natural fractures in schist, amphibolite, and rhyolite specimens from the enhanced geothermal system (EGS) Collab Project's Experiment 1 2 sites (E1 E2) at Sanford Underground Research Facility. employed a triaxial direct method augmented with X-ray imaging to perform hydroshearing (injection-induced shearing) mechanical sheari...

Close reduction by extension-block K-wire fixation for acute mallet fracture is a relatively novel mode of treatment which is based on two sound orthopedic principles - stable arc splinting and early protected motion. Distal interphalangeal joint splinting is still the technique commonly used for mallet fractures with significant morbidity and only moderate functional outcome. We have demonstra...

BACKGROUND There is increasing evidence associating "atypical" femoral fractures with prolonged exposure to bisphosphonate therapy. The cause of these fractures is unknown and likely multifactorial. This study evaluated the hypothesis that patients with primary osteoporosis who sustain atypical femoral fracture(s) while on chronic bisphosphonate therapy have a more varus proximal femoral geomet...

Most Thermococcales accumulate di-myo-inositol-phosphate (DIP) as an organic solute as a response to heat stress. We have studied the accumulation of this osmolyte in the high-hydrostatic pressure adapted hyperthermophile Thermococcus barophilus. We found no accumulation of DIP under any of the stress conditions tested, although this archaeon harbors the 3 DIP synthesis genes. Lack of synthesis...

Author(s): Yoo, H; Park, S; Xie, L; Kim, KI; Min, KB; Rutqvist, J; Rinaldi, AP | Abstract: This study presents comprehensive coupled hydro-mechanical numerical modeling of the first and second hydraulic stimulations at Pohang enhanced geothermal system (EGS) site in order to improve understanding on key stimulation mechanisms fractured reservoir. Two models for PX-2 PX-1 wells were developed in...

Abstract—A model to predict the plastic zone size for material under plane stress condition has been developed and verified experimentally. The developed model is a function of crack size, crack angle and material property (dislocation density). Simulation and validation results show that the model developed show good agreement with experimental results. Samples of low carbon steel (0.035%C) wi...

We relate the pressure "dip" observed at the bottom of a sand pile prepared by successive avalanches to the stress profile obtained on sheared granular layers in response to a localized vertical overload. We show that, within a simple anisotropic elastic analysis, the skewness and the tilt of the response profile caused by shearing provide a qualitative agreement with the sand pile dip effect. ...

in this work, studies of underground gas storage (ugs) were performed on a partially depleted, naturally fractured gas reservoir through compositional simulation. reservoir dynamic model was calibrated by history matching of about 20 years of researvoir production. effects of fracture parameters, i.e. fracture shape factor, fracture permeability and porosity were studied. results showed that di...