Subsea 7 to subcontract Lianzi topsides to KBR
The Lianzi oil and gas field is located 105 kilometers from shore in the deepwater of the unitized offshore maritime zone between Angola and Congo.
Because of its dual presence in Angola and Congo through this unitized offshore zone, Chevron and its partners in Lianzi applied to the Government of Congo to change status to become recognized as a producing company in the country.
Chevron and its partners share working interests in Lianzi such as:
– Chevron 31.25% is the operator
– Total 36.75%
– Eni 10%
– Sonangol 10%
– SNPC 7.5%
– Galp 4.5%
Chevron awarded Lianzi EPIC contract to Subsea 7
Lying by 1,000 meters water depth, the Lianzi offshore oil field will be tied-back the existing Chevron Benguela Belize Lobito Tomboco (BBLT) only distant from 43 kilometers in Block 14 of the Angola territorial water.
The Chevron Lianzi offshore tie-back should support the operations for:
– Three subsea production wells
– Three water injection wells
– Preparation for one additional production well and one additional water injection well
– Subsea production system including 43 kilometers electrically heated flowline to transport crude oil from Lianzi to the BBLT platform.
This electrically heated flowline will be the first one installed in deepwater on that length.
For the development of the Lianzi oil field, Chevron budgeted $1.9 billion capital expenditure.
In August 2012, Chevron and its partners awarded to Subsea 7 the engineering, procurement, construction, installation and commissioning (EPIC) contract of the subsea umbillicals, risers and flowlines (SURF) package.
Estimated to $600 million capital expenditure, this package is critical for the Lianzi project as it contains the electrically heated and wet insulated 12″ production flowline.
Chevron required to increase local content in Lianzi
To win this contract, Subsea 7 committed to maximize the local content for both countries Angola and Congo.
Subsea 7 will perform a part of the design in Luanda, Angola, while the fabrication will be shared between Luanda and Lobito, Congo.
This installation is scheduled in 2014.
– Seven christmas trees
– Nine subsea control systems
– Topside and subsea control distribution equipment
This topside package includes:
– A 200,000 tons module for the high voltage power generation to supply the electrically heated flowline
– A 80,000 tons flowmeter deck extension
KBR will also provide Subsea 7 with detailed engineering, procurement services and support during the fabrication, installation and commissioning of the Lianzi project.
KBR will perform this contract from its offices in Houston, Texas and in Luanda, Angola.
With KBR being awarded the main package of the Lianzi project, with the topsides, Chevron and its partners, Total, Eni, Sonangol, SNPC and Galp expect the Lianzi offshore platform to start oil production in 2015.