Technology of Production
Methane from coal seams is recovered through drainage systems constructed by drilling a series of vertical or horizontal wells directly into the seam. Water must first be drawn by ESP from the coal seam in order to reduce pressure and release the methane from its adsorbed state on the surface of the coal and the surrounding rock strata. Once dewatering by ESP has taken place and the pressure has been reduced, the released methane can escape more easily to the surface via the wells.
Novomet’s coal bed methane (CBM) recovery ESP systems ensure efficient operation advantages in the production of industrial water in CBM wells.
Novomet ESP systems for CBM projects are designed according to customer specifications. To reduce drilling and completion costs, slim ESP systems are available for Casings OD: 4, 4½ and 5 in.
A wide range of flow rates for various casing sizes allow operators to select the best ESP size to maximize water drawdown and gas production.
Novomet CBM systems can operate in extremely high temperatures, up to 400°F (200°C).
Novomet ESP systems allow for better natural gas production by reducing the risks to the environment in CBM fields.
- Coal bed Methane production
- Mine Dewatering
- Extended system runtime in challenging CBM conditions, such as when extracted fluid contains coal fines/solids.
- Cost-effective by ensuring strong returns on investments.
- Special designs for low/high flow rate scenarios, as per customer request
- High-temperature applications
- Abrasion-resistant design
- Compression/semi-compression pump configuration
- Enhanced motor cooling due to shroud application
Shrouded ESP system below perforation zone
- ESP sitting below perforation zone
- Application of motor shroud for motor cooling
- Simple system with minimum extra devices
- Motor size depends on casing OD
- Downhole slotted screen filters eliminate solid influence on ESP operation