scholarly journals Extraction of natural gas (NG) from coal bed methane (CBM)

2010 ◽  
Author(s):  
Timothy J Skone
Keyword(s):  
Natural Gas ◽  
Coal Bed ◽  
Coal Bed Methane

A Comparative Analysis between Coal-Bed Methane and Shale Gas in China Based on Cases

2015 ◽  
Vol 737 ◽  
pp. 794-799
Author(s):  
Liang Yu Xia ◽  
Jing Yi Wen
Keyword(s):  
Comparative Analysis ◽  
Natural Gas ◽  
Shale Gas ◽  
Net Present Value ◽  
Cost Benefit Analysis ◽  
Supply And Demand ◽  
Cost Benefit ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Single Well

Owing to the growing gap of natural gas between supply and demand in China, the unconventional natural gas, including coal-bed methane (CBM) and shale gas, has been considered as strategic energy sources. An assessment by China’s Ministry of Land and Resources (MLR) announced that China has potentially resources of 36.7 trillion cubic meters of CBM and 25 trillion cubic meters of shale gas, larger than those of the U.S. Controversial views about their commercial prospects and priorities in order are available. This research aims at exploring which is more economically viable and worth the priority. A cost-benefit analysis (CBA) based on average single well data is employed to carry out a comparative analysis between two typical fields, the coal-bed methane (CBM) fields in the Qinshui basin and the shale gas fields in Sichuan basin. The net present value (NPV), the internal rate of return (IRR) and the payback period are used as indicators in this analysis. The results indicate that CBM is superior to shale gas in viability under the current technological and economic conditions, and the future of the CBM industry is clearer than that of the shale gas industry, but the latter is still promising if the drilling costs can be reduced significantly with technical progress. We suggest that the CBM industry should be given the priority to, and the policy for shale gas should focus on promoting technical innovations.

PESA year in review 2019 – development and production

2020 ◽  
Vol 60 (2) ◽  
pp. 371
Author(s):  
Matthew Quinn
Keyword(s):  
Natural Gas ◽  
Coal Seam ◽  
Liquefied Natural Gas ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
North West ◽  
The North ◽  
Carnarvon Basin

Australia’s production has been steadily increasing since 2013 with the main contributors being the large liquefied natural gas (LNG) projects. The North Carnarvon Basin accounted for over half of Australian production in 2019, dominated by North West Shelf LNG, Gorgon, Wheatstone and Pluto. Just under a quarter of production was from the Bowen-Surat Basin, with the highest producing project being the Condabri, Talinga and Orana cluster of coal seam assets. The next most prolific basin was the Browse Basin at just over 10%, with Prelude and Ichthys, followed by the Gippsland at 7%. During the year, the Greater Enfield Project, in the North Carnarvon Basin, was brought onstream, which involved a 30-km tie-in of the Laverda and Cimatti fields to the Ngujima-Yin floating production, storage and offloading vessel at the Vincent Field via sub-sea pipelines. Also brought into production during 2019 was the Roma North and Project Atlas, Bowen-Surat Basin, coal bed methane projects. Gas from Roma North is exclusively contracted to the Gladstone LNG consortium while Project Atlas gas will be supplied to domestic customers.

Overview of Direct Carbonate Fuel Cell Technology and Products Development

2003 ◽  
Author(s):  
Hossein Ghezel-Ayagh ◽  
Anthony J. Leo ◽  
Hans Maru ◽  
Mohammad Farooque
Keyword(s):  
Power Generation ◽  
Fuel Cell ◽  
Natural Gas ◽  
Power Plants ◽  
High Efficiency ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Proof Of Concept ◽  
The Us ◽  
Carbonate Fuel Cell

Significant progress has been made in development of power generation products based on carbonate fuel cells. Carbonate fuel cell systems provide high efficiency and ultra-clean power generation from a variety of gaseous, liquid, and solid carbonaceous fuels. The high operating temperature of 650 °C in carbonate fuel cell allows significant system simplification by integrating the internal reforming feature into the fuel cell stack as well as use of the byproduct heat in an efficient bottoming cycle. Direct FuelCell® (DFC®) is a unique version of the carbonate fuel cell, which generates electricity directly from a hydrocarbon fuel by reforming the fuel inside the fuel cell and producing hydrogen. The direct reforming concept eliminates the need for an external reformer resulting in power plants with reduced capital cost. This feature also allows the DFC power plants to utilize the existing fuel distribution infrastructure. The first generation of products offered by FuelCell Energy (FCE) range from 250kW to 2MW and is suitable to operate on natural gas, digester gas and other fuels. Presently, a fleet of natural gas fueled units is operating in the US and Europe at customers’ sites. Additionally, there are subsequent power plants planned to operate on a variety of fuels, including coal-bed methane, digester gas, and coal-derived gas. A 2 MW fuel cell power plant (DFC3000) will soon be operating with coal gas in Wabash River, Indiana’s coal gasification plant. The field tests of a 1 MW unit (DFC1500) at King County (Seattle, WA) waste treatment will be demonstrating the unique features of the DFC technology with digester gas as a fuel. There are plans to operate a 250 kW (DFC300) unit on coal-bed methane fields in Cadiz, Ohio. FCE is also developing a 500 kW unit for the US NAVY, operating on marine distillate fuels. FCE is also developing fuel cell/turbine ultra-high efficiency hybrid power plants with efficiencies approaching 75%. In the Direct FuelCell/Turbine® (DFC/T®) power cycle, the fuel cell is integrated with an indirectly heated gas turbine. FCE has recently completed the operation of a ‘proof-of-concept’ system that combined a sub-megawatt DFC with a 30-kilowatt microturbine. The proof-of-concept tests demonstrated that the DFC/T hybrid concept, indeed, has the potential for achieving higher efficiencies than the single cycle fuel cell. The demonstration of two, packaged sub-megawatt DFC/T units, one in Danbury and one at a customer site in Montana, is planned. In addition to pioneering the Direct FuelCell technology, FCE has established a strong manufacturing base. Currently the manufacturing facility at Torrington, CT, has the equipment in place to produce 50 MW per year of fuel cells. FCE has also established commercial distribution alliances with electric power equipment sales and service companies, energy service and solution providers, and specialty application developers for marketing DFC products. The operation of FCE’s power plants at customer sites, continuing efforts in technology improvement, and the favorable reception of the customers for DFC-based units, combined with a network of partners for sales and services, are the key factors for market penetration of DFC products.

Research on the Drilling Technique of Coal Bed Methane

2012 ◽  
Vol 616-618 ◽  
pp. 555-559
Author(s):  
Ji Wei Wen ◽  
Chen Chen ◽  
Fang Qian
Keyword(s):  
Mechanical Properties ◽  
Natural Gas ◽  
Coal Seam ◽  
Liquid State ◽  
Physical And Mechanical Properties ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Hydrocarbon Reservoir ◽  
Drilling Technique ◽  
Main Component

Coal bed Methane(CBM) is commonly known as “gas”，of which the main component is methane. It mainly exists in the coal seam in the adsorption state, not only different from petroleum which is also fluid but in the liquid state, but also different from the conventional natural gas which exists in the formation in the free state. In the present, the drilling technique of coal bed methane is mainly based on the drilling technique of petroleum. But as the coal bed methane is attached to the coal seam and different from the conventional hydrocarbon reservoir in the physical and mechanical properties and in the storage, it determines the particularity of the drilling techniques. This paper mainly discusses the drilling technique of coal-bed methane in order to provide some useful reference. Coal bed methane is an important type of non-conventional natural gas which has great potential for exploration.

scholarly journals A Review on the Geologic Occurrence, Development and Associated Environmental Problems of Unconventional Hydrocarbon Energy Resources

2020 ◽  
Vol 5 (8) ◽  
pp. 1411-1423
Author(s):  
Kalu, E. O ◽  
Okeke O. C ◽  
Amadi, C. C ◽  
Akudike, J. C ◽  
Dozie, O. T ◽  
...  
Keyword(s):  
Natural Gas ◽  
Heavy Oil ◽  
Oil Shale ◽  
Environmental Problems ◽  
Energy Resources ◽  
Coal Bed ◽  
Coal Bed Methane ◽  
Shale Oil ◽  
Horizontal Drilling ◽  
Well Production

Unconventional hydrocarbon energy resources are non renewable energy resources whose major constituents are hydrogen and carbon. They have indistinct source rock- reservoir rocks-trap rocks characteristics/boundaries and unique exploitation technologies including mining and processing (surface and underground production using retorts for exploitation of oil shale and coking units for exploitation of bitumen; in-situ treatment and recovery (underground production using thermal treatment, chemical flooding and gas injection for exploitation of heavy oils in particular); and well production /underground production using vertical drilling, horizontal drilling and hydraulic fracturing. Only well production technology is applicable to conventional hydrocarbon energy resources, that is petroleum and natural gas exploitation. There are five classes of unconventional hydrocarbon energy resources including: coal bed methane (CBM), oil shale, shale gas/shale oil, heavy oil/bitumen, and natural gas hydrates. Worldwide, the recoverable methane from coal bed methane resources is about 2625 tcf. Similarly, the recoverable billions of barrels of oil from shale oil, heavy oil and bitumen, resources worldwide are 28626,443 and 651, respectively. Over 90% of these, that is, shale oil, heavy oil and bitumen are found in USA Venezuela and Canada respectively. The environmental problems associated with development of unconventional hydrocarbon energy resources include: surface/groundwater pollution; water depletion; air pollution and hazards of solid wastes from oil shale and bitumen mining/ processing. However, energy produced from unconventional hydrocarbon energy resources are similar to those produced from other (conventional) energy resources and can be equally used for various purposes including industrial, residential, transportation and commercial.

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