The Pusztaszer-1 well (P-1) was drilled on the Tisza License with the Crosco 403 rig on the flanks of the Mako Trough. The primary objective of the well was to test the northwestern extent of the potential basin-centered gas accumulation (BCGA). It can now be disclosed that the well encountered significant overpressured shows of gas in sections of the Szolnok formation, which will be analyzed with regard to position in the overall Mako BCGA. The underlying basement rocks were highly fractured and charged with gas. The cased well will be subject of an immediate completion and testing effort scheduled for July 2006, subject to availability of completion rig and equipment.
At the Mako-6 well location on the Mako License, the Crosco 801 rig has reached a measured depth of 4846 meters as of today. Drilling through the Szolnok formation over a gross interval of at least 900 meters yielded overpressured gas shows and wireline logs revealed a 60-percent net sand percentage and no indications of moveable water. The average porosity was 9% with peaks up to 12%.
During the subsequent drilling of the underlying Endrod formation from 4380 meters to about 4800 meters the BCGA continuously liberated gas and required a mud weight of 16 pounds per gallon to control the well. This is almost twice the hydrostatic pressure. The gas compositions ranged from methane (C1) through pentane (C5).
Mr. Marc A. Bruner stated, "We are tremendously pleased with the ubiquitous gas flows, the very high-pressure regime and other data from these thick sections of both the Szolnok and the Endrod formations. We have now proved the existence of the BCGA cell, which previously was experienced during testing of the Hungarian test well, Hod-1 over thirty years ago. The Hungarian crews back then continuously fought the high pressures in an environment, which was technologically beyond reach in the mid-seventies. Now, we have the current data and can proceed. These intervals will be tested upon arrival of a suitable test rig with frac-treatment capability."
The well is currently planned to a depth of 6000 meters in order to test the entire Pannonian sequence and possibly the never-drilled, underlying synrift sediments. The deeper lying synrift potential is based on 3-D seismic and the geological concept of an early basement rift. Thus, the 2005 seismic data has indicated the deposition of a wedge of possibly coarse-grained sediments in the original rift forming the Mako trough.
The Crosco 403 rig is drilling forward on the Szekkutas-1 (S-1) location and has reached a depth of 3203 meters. The well is testing the eastern flank of the BCGA on the Mako License, approximately 40 kilometers east of the first well at Pusztaszer-1 and about 25 kilometers north of the second well at Mako- 6. The target is a Badenian basement structure. During drilling from about 2400 meters, the lower Algyo and the upper part of the Szolnok have continuously been providing gas influx into the wellbore and wireline logs show porosity and gas saturation. Subject to further testing Falcon believes this data supports the location of the edges of the BCGA against the flank of the Mako trough.
"This information has supported Falcon's decision to set casing here at 3200 meters for later testing of the BCGA," stated Marc A. Bruner. "Once intermediate casing is set to protect the gas-bearing part of the Szolnok, we will drill to basement."
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