How Is Coalbed Methane Produced?

No two CBM sites are exactly alike. An area's geological history and the depth of its buried coal determine a coal's type and gas content. Still, conventional natural gas drilling techniques can develop almost any CBM deposit.

However, before commercial CBM can be produced, testing is often completed on four or five wells in close proximity. On the surface, a CBM drilling system looks much like one used in any oil and gas operation. In many cases, it most closely resembles the equipment used to drill water wells.

The cover photo shows the equipment used to drill a test well in the Elk Valley in southeastern B.C. during summer 2000. Underground, CBM's production system is unique (Figure 2). Typically, a steel-encased hole is drilled into the coal seam first.

Unlike conventional reservoirs, which will produce gas through the well bore at high pressures, simply penetrating the coal seam will not cause the CBM to flow. Generally, a fluid – sometimes a water-based nitrogen foam – must be ... more.

I cant really gove you an answer,but what I can give you is a way to a solution, that is you have to find the anglde that you relate to or peaks your interest. A good paper is one that people get drawn into because it reaches them ln some way.As for me WW11 to me, I think of the holocaust and the effect it had on the survivors, their families and those who stood by and did nothing until it was too late.