Tullow Oil announced Tuesday that the Zaedyus-2 appraisal well, offshore French Guiana, has completed drilling but failed to find commercial oil or gas.
The well, drilled some three miles from the Shell-operated Zaedyus-1 discovery well, managed to find a total of 280 feet of reservoir-quality sands with oil shows but did not encounter commercial hydrocarbons at the location.
Tullow said that the result had no bearing on the bulk of the undrilled prospects that are located down-dip of Zaedyus-1 since Zaedyus-2 was up-dip and disconnected from the discovery. The firm added that future drilling on the Zaedyus fan system should therefore be targeted on down-dip prospects.
Tullow said that the well, drilled to a depth of 20,300 feet by the Stena DrillMax Dynamically Positioned Drillship, would be followed by the Priodontes-1 well (the second well in a four-well program), which is expected to begin drilling in early December.
Tullow has a 27.5-percent stake in the Guyane Maritime licence and is partnered by Shell, who is the operator and holds a 45-percent stake, Total (25%) and Northpet (2.5%),
Tullow Exploration Director Angus McCoss commented in a company statement:
"While the Zaedyus-2 well has not proved an up-dip extension of the Zaedyus discovery towards the apex of the fan, the well has provided very valuable data for the exploration and appraisal strategy of the Cingulata fan system going forward. The French Guiana block remains highly prospective, particularly down-dip and still offer excellent potential for multiple exploration successes. These early lessons learned by the joint venture are being incorporated into our ongoing well campaign."
Principally focused on Africa, Tullow has just one license in French Guiana but the firm is also active in other South American countries, including Guyana, Suriname and Uruguay.
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