These are links that discuss the issue of gas migration from underground to the surface through various pathways.
- - 1503 - [August 24, 2014] - Pennsylvania | Energy.Environment.Economy, NA - "Tap Water Torches: How Faulty Gas Drilling Can Lead To Methane Migration"
- "One of the most iconic symbols of the fracking debate is the video of a man setting his tap water on fire in the anti-drilling documentary Gasland.
Fracking, which refers to hydraulic fracturing, is a technique used to extract natural gas, and has become synonymous with all things gas drilling. It involves shooting water, sand and a mix of chemicals at high pressure deep into a wellbore to help split the shale rock and release the gas that lies tightly squeezed into the rock. Some worry fracking fluid will leak out of a well and contaminate aquifers. But the tap water blow torch seen in Gasland has nothing to do with hydraulic fracturing. Instead, it’s related to a problem called methane migration."
- - 1506 - [March 18, 2015] - Clean Technica, Glenn Meyers - "Fossil Fuels' Excess Methane Solution: CNG-In-A-Box"
- "Oil and natural gas fields are notorious for leaking or flaring off excess methane, thus creating a staggering amount of lost clean-burning fuel, while significantly contributing to global climate change.
...Solutions are being developed for this problem of lost gases. Breaking Energy reports that “new uses for ‘field gas’ are being implemented that are proving to be highly cost-effective, and highly sought after now that oil prices have fallen and drillers are under enormous pressure to reduce costs everywhere possible.”
To this end, some service providers have rolled out mobile gas compression technologies that allow field gas to be upgraded into compressed natural gas (CNG) to fuel drill rigs and pressure pumps. In these applications the field gas CNG directly replaces diesel fuel, resulting in cleaner emissions across the board as well as cost savings."