The units have a combined net hydrocarbon-bearing interval for all three units of about 180 feet, and a total in the three units of about 60 feet of reservoir-quality sand with porosities greater than 20%. Because of the thinly inter-layered nature of the two Cib Haz units, and the preponderance of sandstone in the two Cib Haz sections, this interpretation of reservoir-quality thickness may prove to be conservative.
A completion program has commenced with preparations to test initially the lower of the two potential reservoir units in the overall Cib Haz interval. Halliburton is providing expertise in planning the proposed perforation and testing program. Initial completion of the Cib Haz 7 will include about 20 feet of perforations over a 27-foot interval of the most prospective section.
The Cib Haz interval that will be tested has reservoir properties similar to those in an analogue well that produced from the Cib Haz interval at similar depths and pressures, about eight miles from the Bullseye prospect. This well had initial production rates of more than 900 barrels of oil per day and 1 million cubic feet of gas. The electric log characteristics of the Cib Haz are similar to those in the Jumonville # 2 well. Sidewall cores from both wells have comparable permeabilities and porosities in sandstones, siltstones and shales. A major difference between the two wells is that the producing interval in the analogue well is much less sandrich than either of the two potential Cib Haz reservoirs in Jumonville #2. Testing of the lower Cib Haz interval in the Jumonville # 2 well will determine if this reservoir has similar production characteristics to the successful analogue wells to the west.
Actual perforation and testing of the Cib Haz is expected to take place in about two weeks. Depending on the test results, the Jumonville # 2 well will either be put on immediate production from one of the two Cib Haz intervals or the known productive Miogyp sandstone which is about 20 feet thick in the Jumonville # 2 well. Surface facilities are being installed and connected to the already established sales line that currently handles the Jumonville # 1 oil and gas production.
Golden Gate Petroleum said it is delighted to have successfully drilled and completed a complex well that reached its targets and appears to have made discoveries in the primary objectives. The successful appraisal of the Miogyp and the potential discoveries in the deeper Cib Haz represent an exciting period for Golden Gate Petroleum. The discovery of oil in the Miogyp will allow the company to book proven reserves as it is an appraisal of the existing field. The deeper Cib Haz discoveries in this well represent material exploration upside to be tested over the coming weeks.
Partners in the Jumonville # 2 well are: Golden Gate Petroleum 33.25% WI, Modena Resources Limited 9% WI, Pantheon Resources PLC 11.25% WI, Eastern Advisors 12% WI, IB Daiwa Corporation 8% WI and Quest Petroleum NL 5% WI and other partners 21.5% WI.
