Saturday, March 23, 2013

About Narsingdi gas field


Narsingdi gas field is located at Shibpur upazila in Narsingdi district. This field was discovered by Petrobangla in 1990. Total recoverable gas reserve of this field, re-estimated by Hydrocarbon Unit, is 345 billion cubic feet (BCF).  Commercial gas production of this field was started in 1996 and till January 31, 2013 total 139.399 billion cubic feet or 40.41% percent of gas reserves has been recovered.
In January 2013, average 29.98 million cubic feet of gas is produced daily from 2(two) wells of the field processing through a glycol dehydration process plant and supplied to TGTDCL system. At present average condensate/gas ratio and water/gas ratio of this field are 2.01 and 0.998 bbl/million cubic feet respectively. Condensate produced as by product of gas of this field is refined to the fractionation plant of Titas gas field.
Titas gas field is located at Brahmanbaria district town. This field was discovered by Pakistan Shell Oil Company in 1962. The structure is an elongate north-south asymmetrical anticline measuring about 19x10 square km with a vertical closure of 500m. As per latest official re-estimation, total recoverable gas reserve of Titas gas field is 7,582 billion cubic feet (BCF).  Commercial gas production from this field was commenced in 1968  and till    January 31, 2013 total 3551.549 billion cubic feet gas or 46.84%  of reserves has been recovered.
Out of total 17 (seventeen) nos. gas wells drilled so far in this field 8 (eight) are vertical wells and the remaining 9 (nine) are deviated wells. The wells are spread (surface location) at 7 (seven) different locations stretched over about 11 km distance. In January 2013, average 452.21 million cubic feet of gas is produced daily from 15 wells of this field and processed through 5 nos. glycol dehydration and 6 nos. Low Temperature Separation (LTS) type process plants and  supplied to the transmission pipelines of Titas Gas Transmission & Distribution Co. Ltd. (TGTDCL) and Gas Transmission Company Ltd. (GTCL). About 386 bbl condensate is produced daily with gas as by-product. Present average condensate/gas ratio of this field is 0.852 bbl/million cubic feet and water/gas ratio is 1.06 bbl/million cubic feet (excluding well no Titas 12). Titas well no.3 was Plugged & Abandoned by snubbing operation on 21.1.2008 to prevent gas seepage from nearby locality.
Condensate produced from Titas gas field (about 386 bbl per day), Narsingdi gas field (about 61 bbl per day) & Habiganj gas field (about 12 bbl per day) of BGFCL and about 220 bbl heavy condensate from Beanibazar gas field of SGFL are fractionated into MS (Petrol) and HSD (Diesel) through two fractionation plants at this field having plant capacity of 400 bbl each. The products are being sold to Padma Oil Company Ltd. 

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