However, as technology changes or as conventional sources become relatively expensive, some unconventional gas becomes easier and relatively cheaper to produce in quantities that can fully complement conventional gas production.
Nanomaterials are relatively new and unconventional materials with many useful properties, but their effects on biological systems are poorly understood.
And finally, an issue could arise if an energy model incorporates aspects or effects that are relatively 'new'?, e.g. unconventional gas in Europe.
Although numerous numerical models have been developed to simulate fracture propagation in unconventional reservoirs, relatively few physical three-dimensional models exist to quantitatively simulate opening of fractures affected by weak interfaces.
The report offers some useful new findings -- and an excellent synthesis of the specific challenges for larger institutional investors in deploying capital to impact investments that tend to be smaller, unconventional, and relatively untested.
Meanwhile, the long years of unconventional frontier warfare had relatively little impact on the manner in which the U.S. military waged war.
And a new HuffPost/YouGov poll finds relatively little appetite among Democrats for unconventional or insurgent candidates, while Republicans ― despite their current control of the White House and Congress ― remain less enamored with their party establishment.
Conventional gas production is relatively easy, but getting gas out of unconventional sources requires some physical and chemical violence to make the rocks more permeable.
Among all unconventional energy resources, shale gas is relatively the potential source of energy to be developed in a sustainable way.
With the relatively modest natural gas price, producing oil from unconventional shale reservoirs has attracted more and more interest from oil operators.
