ECBM displacement experiments are a direct way to observe the gas displacement process and efficiency by inspecting the produced gas composition and flow rate. We conducted two sets of ECBM experiments by injecting N2 and CO2 through four large parallel specimens (300 × 50 × 50 mm coal briquette). N2 or CO2 is injected at pressures of 1.5, 1.8, and 2.2 MPa and various crustal stresses. The chan...

The development of most unconventional oil and gas resources relies upon subsurface injection of very large volumes of fluids, which can induce earthquakes by activating slip on a nearby fault. During the last 5 years, accelerated oilfield fluid injection has led to a sharp increase in the rate of earthquakes in some parts of North America. In the central United States, most induced seismicity ...

This contribution gives a critical discussion about a concept for plastics recycling with thermal treatment. Plastics wastes are converted into synthesis gas. The crude synthesis gas is injected into exhausted oil reservoirs. In this way atmospheric pollution is avoided. The oil reservoir has filtering capacities. Moreover there is a chance that the hydrogen injected may crack the geopolymers i...

Abstract The structure of a gas-droplet flow arising under gas outflow with liquid jet injected into it from supersonic nozzle vacuum is studied experimentally. Possibility the control in order to obtain droplets certain size, composition, and velocity, considered. was co-current prechamber then flowed out chamber form jet. Using developed technique droplet deposition on paper substrates, effec...

We have updated our radially-resolved semi-analytic models of galaxy formation, which track both the atomic and molecular gas phases of the interstellar medium. The models are adapted from those of Guo et al. (2011) using similar methodology as in Fu et al. (2010) and are run on halo merger trees from the Millennium and Millennium II simulations with the following main changes: (1) We adopt a s...

BACKGROUND Ionizing radiation administered intraluminally via catheter-based systems using solid beta and gamma sources or liquid-filled balloons has shown reduction in the neointima formation after injury in the porcine model. We propose a novel system that uses a 133-Xenon (133Xe) radioactive gas-filled balloon catheter system. METHODS AND RESULTS Overstretch balloon injury was performed in...

Background—Ionizing radiation administered intraluminally via catheter-based systems using solid and sources or liquid-filled balloons has shown reduction in the neointima formation after injury in the porcine model. We propose a novel system that uses a 133-Xenon (Xe) radioactive gas-filled balloon catheter system. Methods and Results—Overstretch balloon injury was performed in the coronary ar...

The Oil & Gas Journal, in 2004, states that CO2 flooding is the fastest-growing enhanced oil recovery technique in USA, and production derived from CO2 projects has more than tripled from 50,000-Barrels/day to 200,000-Barrels/day. Cyclic injection of CO2 and N2 combines environmental benefits attendant to reducing CO2 concentrations in the atmosphere and economic benefits realized through impro...

Coal rock massif hydro-treating methods accompanied by crack initiation and propagation under influence of injected fluid pressure applied for preventing gas-dynamic phenomena are studied in the article. The perspectives applying acoustic controlling process formation effective preventive measures also studied.