INT/PP/LIB/004 Rev 01, April 14 GAS PIPELINE PROTECTION

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Client: Main contractor: Date of construction Designer: Products used: CASE HISTORY INT/PP/LIB/004 Rev 01, April 14 GAS PIPELINE PROTECTION Product: SARMAC™ bituminous mattress & Lifting Frame GAS PIPELINE PROTECTION Western Libyan Gas Project - LIBYA ENI - NOC SAIPEM SARMAC™ BITUMINOUS MATTRESS / LIFTING FRAME ENI - SAIPEM 2004 Problem The Greenstream is part of the Western Libyan Gas Project, which is the first major project to exploiz the natural gas produced in Libya through export and marketing in Europe. The Greenstream, developed by Saipem, connects the Mellitah Gas Processing Plant, on the Libyan coast, to Gela in Sicily. The natural gas comes from two fields: the offshore field Bahr Essalam which is located 110 km off the Libyan coast, and the onshore field Wafa which is close to the border with Algeria. Eni is the operator with a 50 % stake for the joint development of the fields, while the other partner is National Oil Corporation (NOC) which is the Libyan state-owned oil company. Two underwater pipelines are transmitting the gas and condensate to the treatment plant at Mellitah. The condensate is pumped through a 10’’ pipeline to the onshore Mellitah complex for further treatment and export, while the gas is transported through a 36’’ pipeline to the Mellitah plant for final treatment and onward transmission to the local market and export to Italy thought Greenstream compression station and 335 miles of 32” subsea pipeline. Both 10” and 36” pipelines required protection against hydraulic forces existing at the sea bed; in addition at crossing areas a suitable separation layer was needed able to maintain the minimum required separation between pipelines. Solution Maccaferri’s SARMAC™ bituminous mattress was used to provide ballast, anchorage and protection from falling object to both sealines. SARMAC™ bituminous mattresses were also the optima technical solution able to guarantee the required separation layer for crossing areas. OFFICINE MACCAFERRI supplied: 729 SARMAC™ bituminous mattresses dimensions 5.00x2.35x0.30 m. 1 manual lifting frame for handling operations Officine Maccaferri decided to install its Sarmac™ manufacturing yard in Malta, near to the final delivery point for economical reasons. This solution saved transport cost giving a better service to the Client . Project location SARMAC™ SARMAC™ loading on the vessel

Transcript of INT/PP/LIB/004 Rev 01, April 14 GAS PIPELINE PROTECTION

Page 1: INT/PP/LIB/004 Rev 01, April 14 GAS PIPELINE PROTECTION

Client:

Main contractor:

Date of construction

Designer:

Products used:

CASE HISTORY INT/PP/LIB/004 Rev 01, April 14

GAS PIPELINE PROTECTION Product: SARMAC™ bituminous mattress & Lifting Frame

GAS PIPELINE PROTECTION Western Libyan Gas Project - LIBYA

ENI - NOC

SAIPEM

SARMAC™ BITUMINOUS MATTRESS / LIFTING FRAME

ENI - SAIPEM

2004

Problem The Greenstream is part of the Western Libyan Gas Project, which is the first major project to exploiz the natural gas produced in Libya through export and marketing in Europe. The Greenstream, developed by Saipem, connects the Mellitah Gas Processing Plant, on the Libyan coast, to Gela in Sicily. The natural gas comes from two fields: the offshore field Bahr Essalam which is located 110 km off the Libyan coast, and the onshore field Wafa which is close to the border with Algeria. Eni is the operator with a 50 % stake for the joint development of the fields, while the other partner is National Oil Corporation (NOC) which is the Libyan state-owned oil company. Two underwater pipelines are transmitting the gas and condensate to the treatment plant at Mellitah. The condensate is pumped through a 10’’ pipeline to the onshore Mellitah complex for further treatment and export, while the gas is transported through a 36’’ pipeline to the Mellitah plant for final treatment and onward transmission to the local market and export to Italy thought Greenstream compression station and 335 miles of 32” subsea pipeline. Both 10” and 36” pipelines required protection against hydraulic forces existing at the sea bed; in addition at crossing areas a suitable separation layer was needed able to maintain the minimum required separation between pipelines. Solution Maccaferri’s SARMAC™ bituminous mattress was used to provide ballast, anchorage and protection from falling object to both sealines. SARMAC™ bituminous mattresses were also the optima technical solution able to guarantee the required separation layer for crossing areas. OFFICINE MACCAFERRI supplied:

729 SARMAC™ bituminous mattresses

dimensions 5.00x2.35x0.30 m.

1 manual lifting frame for handling operations

Officine Maccaferri decided to install its Sarmac™ manufacturing yard in Malta, near to the final delivery point for economical reasons. This solution saved transport cost giving a better service to the Client .

Project location

SARMAC™

SARMAC™ loading on the vessel

Page 2: INT/PP/LIB/004 Rev 01, April 14 GAS PIPELINE PROTECTION

Officine Maccaferri S.p.A. Global Headquarters Via JF Kennedy 10, 40069 Zola Predosa (BO) - Italy T: (+39) 051 6436000 F: (+39) 051 236507 E: [email protected]

Bureau Veritas Certified Quality System Company with ACCREDIA and UKAS accreditation

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Some additional details/production rate: 1. Eni’s share of recoverable reserves is 950 million boe

(barrels of oil equivalent); 2. Production level is 10 billion cubic meter of gas per year:

4.0 bscm/y at Wafa; 6.0 bscm/y at Bahr Essalam; 3. 8 bscm/y of produced gas is delivered to Italy while 2

bscm/y is supplied to local market.

References www.eni.com —www.saipem.com—www.wikipedia.com

Scheme of the project

Pipeline infrastructure

Schematic cross section of works

www.maccaferri.com

http://www.maccaferri.com/home-page/13188-2.html

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