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On
the 17th of December 1979 His
Highness Shaikh Isa Bin Salman Al-Khalifa, the Late Amir of
the Kingdom of Bahrain, inaugurated
the Associated Gas Project
marking a major step in the Government of Bahrain’s determination
to use energy resource effectively. The primary objective of this
project was to use the large quantities of associated gas extracted
from the Bahrain Oil Field which, for more than 40 years, had previously
been wasted. Now this valuable natural resource, through maximum
utilization, produces a substantial contribution to the National
Economy and has created employment opportunities for the national
workforce.
The
project was incorporated as the Bahrain National Gas (BANAGAS),
75% owned by the Government of Bahrain with the remaining 25% equally
owned by the Arab Petroleum
Investment Corporation and Caltex
Bahrain. At a cost
of US$ 100 million the project included the construction of four
gas compressor stations, a
processing plant to recover Propane,
Butane and Naphtha,
and a storage area at Sitra. It was indeed an historic event when
the Japanese tanker “Yuyo Maru” was loaded with the first shipment
of 5,000 metric tons of Butane in March 1980. Since then, the Company
has continued to produce LPG products conforming to the highest
international specifications.
Due
to the substantial increase in the quantity of associated gas extracted
from the Bahrain Oil Field during the subsequent years, the Company
decided to expand its design capacity to process all the available
quantity of associated gas. In 1988, a 74 US$ million Expansion
Project was launched to upgrade the plant processing capacity from
170 to 280 MMSCFD. The Project, which was implemented by the Government
of Bahrain as a sole venture, involved construction of two additional
compressor stations and a new processing train at the Central
Gas Plant and at the Sitra Storage area. The Project was commissioned
in October 1990.
The
associated gas is separated from crude oil at 16 well manifolds
located around the Bahrain Oil Field. The gas is then transferred
through a network of pipelines to seven compressor stations suitably
located in the field. In addition to this associated gas, low pressure
refinery gas is also transfered to the compressor station number
7 for pressure improvement.
The low pressure gas is compressed at these stations from about
20 PSI to 440 PSI before being routed to the Central
Gas Plant.
Another stream of high pressure gas from the Arab gas wells joins
the associated gas prior to its entry into the Plant.
At the Central Gas Plant LPG is recovered from the gas and Propane,
Butane and Naphtha
produced through fractionation. Propane and Butane are transported
to the Sitra Storage area and stored in refrigerated LPG tanks for
onward export to various parts of the world while Naphtha is transferred
to the Bahrain Refinery (BAPCO).
The
residual lean gas, mainly methane and ethane, is routed to Aluminum
Bahrain, the Bahrain Refinery and Electricity Directorate's
Riffa Power Station to be used in operating their gas turbines after
meeting the Company’s own fuel gas requirements.
When the Company started
operations in 1979 Bahraini personnel represented 48% of the total
workforce in the Company. However, in line with the Company’s policy
to create an efficient and highly skilled national workforce, vigorous
development and training programs were implemented. At present the
Bahraini workforce makes up 93% of the total workforce.
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