Because of the novel techniques
As demand persists for crude oil and natural gas, exploration for new reserves of these resources extends to ever more risky and technically challenging environments. SkyTruth is a charter member of the Gulf Monitoring Consortium, a rapid response alliance that collects, analyzes and publishes images and other information obtained from space, the sky, and the surface, to investigate and expose oil and petrochemical pollution incidents in the Gulf of Mexico. Hydraulic fracturing (also hydrofracturing, hydrofracking, fracking or fraccing) is a well-stimulation technique in which rock is fractured by a pressurized liquid. Hydraulic fracturing is used to increase the rate at which fluids, such as petroleum, water, or natural gas can be recovered from subterranean natural reservoirs. Reservoirs are typically porous sandstones, limestones or dolomite rocks, but also include unconventional reservoirs such as shale rock or coal beds. The process involves the high-pressure injection of 'fracking fluid' (primarily water, containing sand or other proppants suspended with the aid of thickening agents) into a wellbore to create cracks in the deep-rock formations through which natural gas, petroleum, and brine will flow more freely. Hydraulic fracturing is used to increase the rate at which fluids, such as petroleum, water, or natural gas can be recovered from subterranean natural reservoirs. Reservoirs are typically porous sandstones, limestones or dolomite rocks, but also include unconventional reservoirs such as shale rock or coal beds. If we don’t back this technology, we will miss a massive opportunity to help families with their bills and make our country more competitive. Without it, we could lose ground in the tough global race. As with any advance in technology, fracking – drilling for so-called “unconventional” gas – has rightly drawn scrutiny. But a lot of myths have also sprung up. So today I want to set out why I support it – and deal with the worst of the myths at the same time. We want people to get behind fracking, and a transparent planning process is an important ingredient. Equally, we must make the case that fracking is safe. International evidence shows there is no reason why the process should cause contamination of water supplies or other environmental damage, if properly regulated. Unconventional often refers to low permeability rock where the pores are poorly connected, making it difficult for oil and natural gas to move through the rock to the well. Unconventional oil and natural gas—shale gas in particular—has been called the future of gas supply in North America. While its development is in the very early stages in Alberta, it has tremendous economic potential and we know that the interest in these considerable resources will increase.  They are also known as unconventional because of the novel techniques – like fracking and horizontal drilling – used to extract the gas. Unlike shale gas, coalbed methane extraction doesn’t always involve fracking – at least not in the early years of a development. Shale gas and coalbed methane are known as 'unconventional' because unlike conventional sources which are found in larger, easier to access reservoirs, the gas is trapped in tiny little pockets in the shale rock or coal seams. Learn how fracking uses water to extract oil and natural gas from shale plays, why fracking is an economic and energy security solution, and where fracking is safely taking place in America. Learn More. WP-Backgrounds Lite by InoPlugs Web Design and Juwelier Schoenmann schönmann 1010. wien  Fig. 1: Conventional gas wells, shale gas well, and the process of hydraulic fracturing. Shale gas is considered a so-called “unconventional gas”, together with “tight gas” from sandstones or limestones with low permeability and “coal bed methane” (CBM). SkyTruth works on oil and gas issues primarily in two areas: Offshore Oil and Gas Drilling: Remote sensing is a powerful tool to monitor oil pollution on the open ocean and obtain up-to-date information about pollution incidents at rigs and infrastructure miles away from the nearest land. SkyTruth is a charter member of the Gulf Monitoring Consortium, a rapid response alliance that collects, analyzes and publishes images and other information obtained from space, the sky, and the surface, to investigate and expose oil and petrochemical pollution incidents in the Gulf of Mexico. Scottish Energy Minister Fergus Ewing has today announced that there is to be a moratorium on granting consents for unconventional oil and gas developments in Scotland whilst further research and a public consultation is carried out. The decision comes days after the UK Government voted against a moratorium. 
http://skytruth.org/issues/oil-gas/ https://en.wikipedia.org/wiki/Hydraulic_fracturing https://en.wikipedia.org/wiki/Hydraulic_fracturing http://www.telegraph.co.uk/news/politics/10236664/We-cannot-afford-to-miss-out-on-shale-gas.html http://www.aer.ca/about-aer/spotlight-on/unconventional-regulatory-framework/what-is-unconventional-oil-and-gas http://www.foe-scotland.org.uk/fracking http://www.what-is-fracking.com/ http://www.shale-gas-information-platform.org/what-is-shale-gas.html http://skytruth.org/issues/oil-gas/ http://news.scotland.gov.uk/News/Moratorium-called-on-fracking-1555.aspx
why is fracking called unconventional