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No trace of methane gas in Jamalganj coal field

No extractable gas was found in Jamalganj coal field, the largest coal field of the country where two recent drilling works took place to find out the reserve of Coal bed Methane (CBM) gas.

“After drilling two wells in the coal field, we have reached into the decision that the coal field might not have any extractable coal bed methane (CBM) gas,” a Petrobangla official told energynewsbd.com on Tuesday.

“The mine has such depth that we did not find it commercially viable to extract gas from there,” he said.

“Extracting coal from the mine might not be possible any more. They have to wait for some new method or Underground Coal Gasification (UCG) method to extract those which is a long shot,” he added.

Mining Associates Private Limited (MAPL), an Indian consultant company, conducted a feasibility study for the State-run Bangladesh Oil, Gas and Mineral Corporation (Petrobangla) to facilitate CBM extraction at Jamalganj coalfield.

The drilling work in Jamalganj coal field started in January 5.

MAPL was appointed as the consultant to determine the thickness of the coal seams, permeability and the roof and bed conditions for the coal seams to assess whether the Jamalganj coal field offers commercial possibility for extraction of CBM.

A total of Tk 23.37 crore was spent for the project. In June 21 last year, Pterobangla signed the contract with MAPL. The duration of the project is up to June this year.

The Jamalganj coalfield was discovered by a UN-Pakistani mineral survey team between 1962 and 1965 during a geological and geophysical survey in the Jamalganj-Jaipurhat area.

Jamalganj coalfield, with an estimated reserve of about 1.053 billion tonnes of coal, is the deepest and largest coalfield in Bangladesh.

It has seven coal seams in the depth range between 600 metres and 1,100 metres below the ground surface. The coal layer is assumed to be 40 metres wide.

Compared to other coalfields in Bangladesh, with coal occurring at 150 to 500m depth, Jamalganj coal is considered to be too deep to be exploited by conventional underground or open pit mining.

“We had planned to drill three wells there. The drilling works of two wells have already been completed and another one is going on there. We have found some trace of CBM there but that amount is not commercially extractable,” Mortuza Ahmad Faruque, the project monitoring consultant of the Jamalganj coal field project told energynewsbd.com. 

“We have drilled the first well down to 1,080 meter and the second well down to 1,100 meter,” he said.

 

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