After locating a potential natural gas reservoir, it is up to a team of experts to drill down to where the gas is thought.
This can be done both onshore and offshore.
An economic determination of the potential of the gas reservoir is important. After having located a potential drilling site the next steps involve acquiring permits for drilling, legal arrangements for extracting the gas as well as getting permissions to set up pipelines.
Often this is linked to negotiations with land owners or other holders of rights to extract natural resources. Thus leasing fees or royalties can be a consequence.
Gas deposits can be associated to an existing oil field or exist separately as natural gas field or even in combination with coal deposits.
Sources: EPA Natural Gas Columbia University