CBM/CSG Rejuvenation

How TTI Makes New Coal Bed Methane (Coal Seam Gas)

Over geologic periods of time, coal is biodegraded by native microbes that live in coal seams. Biodegradation produces methane as a waste product. This is called primary biogenic gas and represents some of the reserve of natural gas that is produced in CBM operations. The majority of the coal remains un-degraded, and microbes slow down their methane generation as key nutrients become scarcer or depleted. TTI’s CBM Rejuvenation Treatment injects elements and compounds needed by microbes that have been depleted in the sub-surface, much like a fertilizer treatment helps plants grow in poor soil. As a result, the microbes begin growing again, and their respiration creates new methane, called secondary biogenic gas. This creates new gas reserves that can be collected using existing wells and infrastructure.

What to Expect

TTI will work with asset management teams to select the wells most appropriate for treatment.  After the selections are made, a one-time treatment is delivered over a period of days, followed by a brief incubation period.  Increased production is typically realized as soon as the well returns to normal production.  Successful implementations of this process have shown increased production may last for more than 8 years.  With this process we expect to provide a 4-8x ROI with a finding cost of $0.25-0.40/incremental MCF.

 

 

Download the Technical Information Sheet