Brazil's Parnaiba has new Devonian shale find

By OGJ editors
HOUSTON, Nov. 17
-- OGX Petroleo e Gas Participacoes SA, Rio de Janeiro, said gas flow from a Devonian shale discovery 12½ km from its first find in northeastern Brazil’s Parnaiba onshore basin supported a 20-m gas flare on drillstem test.

The flow came at the 1-OGX-22-MA well at the Fazenda Sao Jose prospect on the PN-T-68 block 260 km southwest of Sao Luis. Well operator and 70% interest holder in the block is OGX Maranhao, held 66.6% by OGX and 33.3% by MPX Energia SA. Petra Energia SA has the other 30%.

After drilling the first 10 m of the Upper Devonian section with good gas shows, at a depth of 1,520 m, a drillstem test resulted in 1,950 psi wellhead pressure with the 20-m flare, OGX said. Drilling continued towards other targets and a projected total depth of 3,200 m.

The indicated find is on a structure separate from the first discovery, OGX Maranhao’s 1-OGX-16-MA on the California prospect (OGJ Online, Sept. 2, 2010).

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