Sentences with phrase «impermeable rock layers»
Typically, fracking involves injections into impermeable rock layers that inhibit the spread of fluid and increase pore pressure.
http://www.sciencemag.org/ Not exact matches
Wherever permeable and porous rock is capped by an impermeable layer, a natural gas store may form.
The Illinois Basin was selected specifically because of its special qualities, including its deep layers of impermeable, protective rock sitting above CO2 storage sites 7,000 feet beneath the earth's surface.
Above this reservoir, layers of impermeable rock, such as shale and clays, prevent the CO2 migrating to the surface.
A study published today in Science explains how wastewater injection sites — areas where toxic water left over from oil drilling and fracking processes is injected into the ground between impermeable layers of rocks to avoid polluting freshwater — could be driving the sharp increase in the sometimes - disastrous earthquake events.
Other layers of impermeable rock underneath the fractured area would block migration of the gas, she said.
Then the CO2 can either be used (see «Don't junk CO2, turn it into bottles and glue «-RRB- or pumped underground, beneath impermeable layers of rock (see diagram).
Tom Myers, a hydrologist, drew on research showing that natural faults and fractures are more prevalent than commonly understood to create a model that predicts how chemicals might move in the Marcellus Shale, a dense layer of rock that has been called impermeable.
Underground waste, officials say, is contained by layer after layer of impermeable rock.
Tom Myers, a hydrologist, drew on research showing that natural faults and fractures are more prevalent than commonly understood to create a model that predicts how chemicals might move in the Marcellus Shale, a dense layer of rock that has been called impermeable.