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III.  PRODUCTION OF NATURAL GAS (20,30)
Title Page   I   
Gas Exploration  II   
Gas Study III     
There are now 53 production wells capable of producing more than 1300 MMSCFD of gas from 12 gas fields.
SIMULATION OF KAILASHTILLA-I GAS PROCESSING PLANTNahid Sharmin
SIMULATION OF KAILASHTILLA II GAS PROCESSING PLANT Sarker Kamruzzaman
The following five companies are producing gas:
Bangladesh Gas Fields Company Ltd. (BGFCL)
Sylhet Gas Fields Ltd. (SGFL)
Bangladesh Petroleum Exploration and Production Company (BAPEX)
Shell Bangladesh Exploration and Development B.V. (SHELL)
UNOCAL Bangladesh Ltd. (UNOCAL)

BGFCL, SGFL and BAPEX are subsidiary companies of Petrobangla. Shell and UNOCAL are IOCs operating under separate PSCs.

BGFCL owns eight gas fields, namely, Titas, Habigonj, Bakhrabad, Narshingdi, Meghna, Begumgonj, Feni and Kamta.
Production from the Kamta and Feni is now suspended.
Production from the Bakhrabad field is likely to be suspended in near future.
Begumgonj field has not yet been developed.

SGFL owns five gas fields, namely, Sylhet, Kailashtila, Rashidpur, Beanibazar and Chhatak; and one oil field, namely, Haripur.
Production from the Chhatak gas field and the Haripur oil field is now suspended.

BAPEX has been given the operatorship of the Saldanadi, Fenchugonj and Shahbazpur gas fields.
It produces from the Saldanadi field.
 Shahbazpur and Fenchugonj fields are yet to be developed.

Shell Bangladesh Exploration and Development B.V. produces from one field, namely, Sangu and this is an offshore field. It also owns two other fields, namely, Semutang and Kutubdia. Kutubdia is an offshore field discovered in the seventies.

UNOCAL owns three gas fields, namely, Jalalabad, Maulavibazar and Bibiyana.
It produces gas from the Jalalabad field.

Thesis Title

SIMULATION OF KAILASHTILLA-I GAS PROCESSING PLANTNahid Sharmin

 

Name of the Student

Nahid Sharmin

 

Supervisor

Department

Dr. A. K. M. A. Quader

Professor

Department of Chemical Engineering, BUET, Dhaka

 

Degree and Year of Published

 

M. Sc. Engg.     April, 1999

Abstract

Simulation of the Kailashtilla-I gas processing plant (Golapganj, Sylhet) has been carried out by the HYSIM process simulator. First, the simulation of the gas processing plant has been performed to carry out the material and energy balances of the plant based on the design parameters and then the performance of the plant has been studied using the operating data of different hours of a particular day.

Kailashtilla-1 is one of the oldest gas processing plant in Bangladesh. The existing gas processing plant at Kailashtilla-1 consists of pressure reduction system and three flash separators to separate the gas and oil plus a gas dehydration and hydrocarbon recovery system consisting of a silica gel adsorption tower, regeneration and cooling towers and a condensate fractionation column.

During the simulation of the plant, some change have been made in the process flow diagram due to limitation of the HYSIM simulator, which cannot handle silica gel dehydration operation. The dehydration of the gas has been tried in two different ways, by cooling and by component splitter. The simulation has been performed based on the modified flow diagram with the desitgn data. The gas compositions obtained for two different methods are almost similar. The plant has also been simulated using three sets of operating data from the log sheet. Due to the changes in the process flow diagram some small differences have appeared in material and energy balances.






Thesis Title

SIMULATION OF KAILASHTILLA II GAS PROCESSING PLANT Sarker Kamruzzaman

 

Name of the Student

 

Supervisor

Department

Dr. A. K. M. A. Quader

Professor

Department of Chemical Engineering, BUET, Dhaka

 

Degree and Year of Published

 

M. Sc. Engg.     April, 1999

Abstract

Simulation of the Kailashtilla II gas processing plant (at Golapganj, Sylhet) has been undertaken using the Hyprotech’s standard simulator ‘HYSIM’. First, the simulation of the gas processing plant has been performed to simulate the plant based on the design parameters and then the performance of the plant has been studied using the operating data of different hours of a particular day. During the simulation of the plant, some changes have been made in the process flow diagram due to limitation of the HYSIM simulator, which cannot handle molecular sieve dehydration system. The simulation has been performed based on the modified flow diagram with the design data. Due to the changes in the process flow diagram some small differences have appeared in material and energy balances.


NGL plant will now be set up at Kailashtilla July 01 2004
FE report 7/1/2004 


The NGL (natural gas liquids) fractionation plant which was earlier planned for Ashuganj, will now be set up at Kailashtilla in Sylhet.
The decision to set up NGL fractionation plant at Kailashtilla was taken at a high level meeting at the ministry of energy and mineral resources recently. At the meeting, it was stated that an NGL plant at Kailashtilla will have more prospect than at any other places.

A source said the natural gas fields (Beanibazar, Kailashtilla and Jalalabad fields) from where the NGL condensate will be extracted lie in Sylhet area.
Setting up of a fractionation plant at a place in close proximity of these fields will yield more profit on all counts.
Secondly, laying of pipeline up to Ashuganj from gas field area (Sylhet) for transferring NGL will not be required. As a result, investor(s) would not have to spend for construction of pipelines. This would encourage investor(s) to implement their plan at a shorter period.

Information has it that some investors are interested in extracting NGL/condensate from the fields in Sylhet area for production of LP (liquefied petroleum) gas and marketing of products in the country.

Many 'unsolicited' offers for setting up fractionation plant from local and foreign investors poured into the ministry of energy and mineral resources.
Of them, one is a joint venture project proposal.

LP gas is used mainly for domestic purpose. The demand for it is on the increase all over the country.
At present RPGCL (Rupantarita Prakritik Gas Company Ltd) and LP gas limited have been producing this gas. In the private sector two companies import LP gas.

Sylhet Fractionation Plant Project papers gather dust July 08, 2003
as 3,000 barrels of NGL burnt out daily Iqbal Siddiquee, Sylhet.
Tue. July 08, 2003

Setting up of an NGL Fractionation Plant in Sylhet remained a far cry even three years after short-listing of six firms following floating of international tender for the purpose.
The plant was planned to ensure proper utilization of the huge quantity of NGL found in good proportion in raw gas produced by the six gas fields in Golapganj-Beanibazar region, unlike in the in other regions. Such gas is considered 'wet gas'.

Every day, gas fields in Sylhet region produce a huge quantity of NGL as a by-product, which is being flared up burnt for years. The proposed plant would produce Liquefied Petroleum Gas (LPG), Motor Spirit and High Speed Diesel.
About 3000 barrels of NGL is being burnt every day from the four gas wells in Kailashtila (Golapganj) and two in Beanibazar, officials said.

The gas produced in the two Beanibazar gas fields contains a very high percentage of 'wet contents'. The officials said sixteen barrels of condensate is available from one million CFT gas of Beanibazar Gas Field and 13 barrels from one million CFT gas of Kailashtila Gas Field.

In 2000, the ministry of Energy and Mineral Resources conducted a feasibility study and field survey in Golapganj and Beanibazar upazilas, the probable location for the proposed gigantic plant.

The six-member body having representatives from the Bang-ladesh Petroleum Corporation (BPC), LP Gas Limited, Sylhet Gas Fields Limited (SGFL), Rupantarita Prakritik Gas Company Limited (RPGCL) and Bangladesh Gas Fields Company Limited (BGFCL) and headed by the Petrobangla Secretary visited the sites and suggested setting up the plant.

The approximate expenditure for the plant was estimated at US $ 30 million at that time.
Accordingly, international tender was floated and six bidders were short-listed.

Structural work of the joint venture plant was scheduled to begin in late 2001. But nothing has been done so far.

Talking to The Daily Star some gas officials said Golapganj-Beanibazar region is the best site for the proposed fractionation plant as it can ensure the best utilisation of the costly NGL, which is found in good proportion without any additional investment.


Plan to shift proposed site of NGL plant July 26 2004
 from Ashuganj in Brahmanbaria to Kailashtila in Sylhet


The government has decided to shift the proposed site of NGL fractionation plant, aimed at producing LP gas, from Ashuganj in Brahmanbaria to Kailashtila in Sylhet, reports UNB. Experts lately found that the pipeline from Bianibazar to Ashuganj through Kailashtila was not fit for carrying NGL (natural gas liquid), the main element of liquefied petroleum gas (LPG).
Considering the experts’ opinion, the Energy Ministry at a review meeting on ADP (annual development programme) on Sunday decided to set up the NGL fractionation plant at Kailashtila instead of Ashuganj. The meeting with State Minister for Energy and Mineral Resources AKM Mosharraf Hossain also decided that the fractionation plant would be set up in the private sector although the bureaucrats have some reservations.

The pipeline was set up in 1992 mainly to transmit NGL and since then it has been carrying condensate, a liquid form of gas associates from Bianibazar and Kailashtila to Ashuganj. The pipeline never transmitted NGL to Ashuganj as the NGL fractionation plant did not come into being in last 15 years that encouraged the government to go for its implementation in the private sector.
Despite the failure, officials of Petrobangla, the state-run oil, gas and minerals corporation, told the meeting to keep at least one NGL fractionation plant under the government.

Experts suggested that any bid to transmit NGL through the 175—kilometre condensate pipeline would be disastrous as unscrupulous elements ditched some 80 holes to steal condensate and sell it as fuel oil in black market. “If condensate sips through the pipeline it is only a financial loss. But if vaporous NGL comes out through any leakage it will cause big harm to the locality,” said an expert. Prime Minister’s Principal Secretary Kamal Siddiqui in a recent letter asked the concerned deputy commissioners to take stern action against any bid to steal condensate.

The Energy Minister in the meeting also asked the officials concerned to think seriously whether there was the necessity of keeping RPGCL that mainly deals with CNG (compressed natural gas) and LPG under the public sector any more.

The RPGCL (Rupantarita Prakritik Gas Company Limited), a company of Petrobangla, could do very little in flourishing the CNG use in the country. The use of CNG flourished only after the sector was opened to the private entrepreneurs.