By OGJ editors
HOUSTON, Nov. 14 -- Pacific Stratus Energy Ltd., Toronto, gauged a gas discovery in the Tertiary Cienaga de Oro formation in the Lower Magdalena basin 100 miles south of Cartagena.
The La Creciente-1 exploratory well flowed at rates as high as 29.1 MMcfd in 4 hr with 4,451 psi flowing wellhead pressure on a 32/64-in. choke. Calculated open flow potential is 71.8 MMcfd. The production test was run along a 595-ft section of sandstones.
The well is less than 10 km from the Guepaje-Corozal gas pipeline, which has spare capacity (OGJ Online, Oct. 24, 2006). TD is 11,572 ft.
The reservoir pressure, estimated at 7,900 psi or about 3,000 psi higher than at similar wells nearby, caused several kicks while drilling and eventually stuck drill pipe.
Cienaga de Oro is 200 ft thicker than in any other well in the area and is composed of 75-80% sandstones and conglomerates, Pacific Stratus said.
The Tertiary Porquero formation, the well's second objective and the source rock for the basin, had C1 to C5 shows while drilling, and logs show 44 ft of net pay sandstones with porosities of 14% and up to 50% water saturation. The company plans to test the interval, which may contain condensate, and then drill a sidetrack in the lower part of the well.
