Vintage discovers oil in Yemen

Dec 11, 2002 01:00 AM

Vintage Petroleum revealed that it discovered oil with its second exploration well of the 2002 drilling campaign in Yemen, the An Nagyah-2. The test well successfully tapped 46 degrees API oil from the subsalt Lam formation in Yemen's S-1 Damis Block.
Vintage said the well was drilled to a total depth of 5,327 ft, and based on electric log and other well information, the 65 ft interval from 3,310 to 3,375 ft in the upper Lam sand was selected for testing. The lower section of this interval from 3,345 to 3,375 ft flowed at a sustained, water-free rate of 860 bpd of oil and 400.000 cfpd of natural gas with a flowing tubing pressure of 150 psi. After adding perforations from 3,326-3,345 ft, the well flowed on a short term test at a water-free rate of 1,091 bpd of oil and 543,000 cfpd of natural gas with a flowing tubing pressure of 320 psi.

Subsequently, the entire 65 ft interval was tested at a sustained, water-free rate of 410 bpd of oil and 3.7 mm cfpd of natural gas with a flowing tubing pressure of 915 psi, indicating the likely presence of gas pay within the upper 16 ft of the pay interval.
The well was drilled to evaluate the An Nagyah structure previously drilled by Shell in 1992 (An Nagyah-1). Although An Nagyah-1 had indicated oil and gas pay in the Lam formation, it was never tested. Vintage is currently evaluating the production tests and other well information in order to formulate a plan to appraise the potential of the An Nagyah structure.

The drilling rig is being mobilized to drill the third well in the current campaign, the An Naeem-3 well. This well is targeting a potential downdip oil leg underlying the gas and condensate found in the intra-salt Alif sand in both the An Naeem-1 and -2 wells drilled by Vintage in 2000.
Vintage has a 75 % working interest in the 850,000 acre S-1 Damis Block and is its operator.

Source: OGI
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