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GeoGlobal Resources provides KG#17 Well testing update


Published May 29, 2006
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GeoGlobal Resources provides KG#17 Well testing update-Spotlight

GeoGlobal Resources Inc. announced that Gujarat State Petroleum Corporation, the operator of the KG#17 well in the KG Block, has suspended fishing operations in the KG#17 well intended to retrieve stuck tubing and equipment from the hole and will conduct only one of the remaining tests previously planned in the well.

The KG#17 well commenced drilling from the KG#8 well platform on August 23, 2005. The well was drilled directionally to a location 1.81 kilometers to the northeast of the KG#8 discovery, intended to attempt to delineate the extent of the reservoir section tested in the KG#8 well and to attempt to seek to prove additional reserves below the KG#8 drilled depth of 5,061 meters total vertical depth ("TVD"). At the end of October, an intermediate string of 9 5/8-inch casing was set and cemented to approximately 4,000 meters.

An 8 ½-inch hole was drilled by GSPC from 4,000 meters to a total measured depth ("MD") of 5,601 meters (5,223 meters TVD), which is approximately 140 meters vertically deeper than the KG#8 was drilled. A complete suite of modern logs was run and the well was cased with a 7-inch liner to total depth.

Testing of the KG#17 well commenced on March 16, 2006 and, at this time, the outcome of the testing is considered to be incomplete.

The first objective was perforated from 5,502 to 5,516 meters MD and the second objective was perforated from 5,410 to 5,436 meters MD. Both of these tests flowed non-commercial quantities of gas as the formations were tight and as such the tests were suspended.

Testing of the third objective commenced on April 6. Based upon three independent log analyses, 70 meters were perforated using tubing conveyed 2-7/8 inch guns from 5,295 to 5,365 meters MD which resulted in a gas flow at surface of 0.20 MMSCFD with 300 psi flowing tubing head pressure. The reservoir pressure measured of 12,000 psi and the reservoir temperature of 400 degree Fahrenheit. These measurements are similar to the KG#8 well measurements at this depth.

Anticipating formation damage and insufficient depth of penetration, the operator decided to re-perforate the interval on April 20 using larger wire line conveyed 4-½ inch guns covering 44 meters over the interval 5,289 to 5,355 meters MD. This resulted in a gas flow at surface of 0.28 MMSCFD with 550 psi flowing tubing head pressure.

Subsequently, an injectivity test was conducted to acquire data for future hydro-frac design. These results are to be further analyzed over the coming months, to assess the possible methods that may be available to stimulate this zone to increase productivity.

Upon the suspension of testing on the third objective, two of the three down-hole gauges along with the tubing remained stuck in the hole from 4,500 to 5,187 meters MD.

Fishing operations have been ongoing to remove this equipment from the well since May 4, 2006. While these fishing operations were being conducted, the drilling rig underwent maintenance which included the replacement of the top drive, and the conversion of various tanks and other equipment to allow the availability to use brine and oil-based mud versus water-based mud in future drilling and testing.

On May 26, 2006, the operator elected to suspend these fishing operations as it is unable to estimate a definitive time required to complete the removal of the equipment that is stuck in the well. It is the operator’s intention to place a sand plug and cement plug above the fish top for future re-entry.

GSPC intends at this time to conduct only one of the remaining tests previously planned for the KG#17 well. Based upon independent log analyses, the operator is going to go up-hole into the 9-5/8 inch casing and perforate the approximate interval 3,802 to 3,830 meters MD.

It is presently expected that this test will be conducted the week of May 29. Upon completion of the final test, it is the intention of GSPC to suspend the KG#17 well and commence the drilling of a third well to be drilled from the KG#8 well platform using the same jack-up drilling rig which is expected to commence in approximately one month.




   

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