Equipped with suitable derrick and well controlled device in drilling a shallow gas well water drills proved to be able to reduce shallow gas well drilling cost.
The Suining Formation gas pools will(serve as) the key target of extended assessment and risk exploration of the shallow gas in the study area.
The key to produce this shallow gas is to use a set of negative suction technique besides that a series of measures for protecting the shallow gas-bearing formation must be adapted while drilling.
