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Yoho field – Oil Mining Lease, Nigeria


Oil Mining Lease (OML) 104

Total cost


Oil recovery

0.44 billion barrels


Yoho and Awawa

Water depth

200ft to 300ft


ExxonMobil 40%; Nigerian National Petroleum Corporation (NNPC) 60%


FPSO - current production: 90,000bpd

First stage

Early Production System (EPS)

Second stage

Wellhead platforms, central production platform, living quarters platform, FSO vessel

Full-field start

January 2006

Peak production

165,000bpd (expected)


Detector Electronics Corporation - optical flame detection, combustible and toxic gas detection, and safety systems

Water depth





2.2 million barrels



Number of risers

6 x 10in and 3 umbilicals

Swivel stack

2 x 12in LP production 1 swivel, 2 x 12in HP production 2 swivel, 1 x 10in water injection swivel (spare), 1 x 6in pigging swivel, 1 x LP utility swivel, 1 x electric swivel, 1 x HP utility swivel, 1 x 6in gas injection swivel

Date first oil

November 2002

Max throughput

90,000 barrels of oil per day

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