Okoro Oil Field, Nigeria

Posted On October 27th, 2010 - 2:47 pm | by admin

The Okoro field lies at a water depth of 46ft in block OML 112, which is situated about 12km off the shore of Nigeria. The field was discovered in 1973 by Japan Petroleum. The field’s reserves are estimated at 25mmbbls of oil.

Afren Energy Resources, a subsidiary of Afren plc, is the operator of the field and holds 50% working interest. Amni International Petroleum Development Company holds the remaining 50% interest.

Discovery

Okoro was discovered by the Okoro-1 well, which encountered two oil bearing sands in the Agbada Formation at depths ranging between 4,900ft and 5,500ft. The well was tested and recorded a flow rate of 1,500bpd proving the commercial viability of the field. Another appraisal well Okoro-2 was drilled in November 1974 further confirming the presence of both reservoir sands.

Field development and drilling

Afren became the operator of the field in 2006 and drilled an appraisal well named Okoro-3 in October 2006 using the Seadrill 7 jack-up rig. The vertical well was drilled to a depth of 6,500ft and confirmed the presence of hydrocarbons in the eastern extension of the field. In December 2006, the Okoro-3 sidetrack well was drilled to a depth of 6,870ft. The well encountered 70ft of net oil pay.

Read More: http://www.offshore-technology.com/projects/okorooilfieldnigeria/

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