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Home Upstream Exploration Development

In Amenas Gas Project, Algeria

in Exploration Development, Projects, Upstream
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In Amenas is the largest wet gas development project in Algeria. The project includes the development of four primary gas fields in the Illizi Basin in south-eastern Algeria and the associated gas processing facility.

The In Amenas Gas Project, located close to the Libyan border in the Sahara desert, around 1,300km away from the capital city Algiers, commenced production in 2006.

The gas project is owned and operated by a joint venture between Algeria’s state-owned oil company Sonatrach, UK-based multinational BP and Norway’s Statoil. BP and Statoil’s working interests in the project are 46% and 45.9% respectively.

In Amenas produces nine billion cubic metres of natural gas and 50,000 barrels of condensate per year. It accounts for the one tenth of Algeria’s gas output.

A compression project was launched at In Amenas in 2011, to maintain the plateau production. The project was scheduled to be completed in 2013. However, a terrorist attack on the In Amenas facility in the beginning of 2013 has significantly brought down the In Amenas production. The development projects planned for the gas production facility are also on hold due to security concerns.

The four primary gas fields

In Amenas Gas project comprises of the exploitation of four gas fields, namely Tiguentourine, Hassi Farida, Hassi Ouan Taredert and Hassi Ouan Abecheu in the Illizi Basin of the In Amenas region. The In Amenas fields cover an area of more than 2,750km². The initial natural gas reserves in these fields were estimated at 85 billion m³.

Development history of the Algerian gas project

Sonatrach signed a contract with US-based Amoco Corporation in 1998 to jointly develop the four In Amenas gas fields. BP took over Amoco Corporation in the same year and concluded a production-sharing contract (PSC) with Sonatrach for the In Amenas licence. In June 2003, BP entered into a farm-out agreement with Statoil, which bought 50% of BP’s interest in the In Amenas fields.

“BP and Statoil’s working interests in the project are 46% and 45.9% respectively.”

The $1.2bn first phase of the In Amenas Gas project focused on the development of the Tiguentourine gas field. ENAFOR, a subsidiary of Sonatas, was awarded a contract in 2002 to drill 12 development wells on the field.

The engineering, procurement and construction (EPC) contract worth $745m for the production and processing facilities of In Amenas was awarded in the same year to a joint venture between Japanese Gas Corporation and Kellogg, Brown and Root, a subsidiary of Halliburton.

GE Oil & Gas supplied the gas turbines and auxiliary equipments for the In Amenas gas processing plant under a $70m contract awarded in 2003. The In Amenas facility was brought on stream in June 2006.

The gas produced at In Amenas is marketed by Sonatrach. BP and Statoil are reimbursed with the condensate and liquefied petroleum gas output of the facility.

Gas production infrastructure at In Amenas

The gas gathering system at In Amenas comprises of ten inch flow lines connected to manifold station with each manifold tied to four to six wells.

“The $1.2bn first phase of the In Amenas Gas project focused on the development of the Tiguentourine gas field.”

A total of 100km of intra-field pipelines (ranging from ten inch to 24 inch in diameter) were constructed at the In Amenas facility by LEAD, a company based in Syria.

The In Amenas gas treatment plant has a capacity to process 30 million m³ of gas a day. The plant consists of three parallel trains for gas processing and condensate stabilisation. The treatment plant is equipped with CO2 removal, mercury removal, molecular sieve dehydration, LPG recovery, residue gas re-compression and power generation facilities.

The production facility is connected to the Sonatrach distribution system at Ohanet through three 90km long export pipelines. The diameter of the pipeline carrying dry gas is 36in and the pipes carrying condensate and LPG have a diameter of 12 inch.

In Amenas gas project expansion plan

A $213m contract was awarded to Japanese Gas Corporation in May 2011, to deliver a compression project at In Amenas by 2013. The compression project includes the construction of two train inlet compressions to the existing processing plant, new slug catcher facility, a permanent accommodation camp and utility buildings.

The expansion project aims at improving the recovery of wet gas at In Amenas that will help maintain its production capacity of 30 million m³ per day for next 12 years.

Petrofac was awarded a three year contract for multidiscipline consultancy, design and procurement services in January 2013, as part of the development programme to further boost up the hydrocarbon production at In Amenas.

In Amenas siege / terror attack

The In Amenas gas facility was attacked by Islamist terrorists on 16 January 2013. The workers at the facility, including 48 foreign nationals, were taken hostage by the militants as part of the attack. The gas facility was put under seize by the Algerian security forces for four days. In the process, 40 hostages, including five Statoil employees and four BP employees, were killed.

The processing facility was also partly damaged during the fight between the security forces and the terrorists.

The In Amenas gas facility was shut after the attack. BP and Statoil have withdrawn their employees from the facility until the security situation is thoroughly reviewed.

Sonatrach started limited production from the facility in February 2013, by restarting just one production train on behalf of the joint venture partners. The other two production trains of the facility were damaged during the terror attack.

In the meantime, the expansion projects planned for the In Amenas gas facility have been kept on hold until strict security measures are established by the Algerian state. Any new production from the facility is unlikely until 2014.

Tags: Algeria
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