Drilling / Well Results | Exploration & Appraisals | Key Wells
Talos' Third Zama Appraisal Well Exceeds Expectations; 400-800 MMBOE
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Talos Energy Inc. provided an update on the Zama appraisal program in Block 7, located in the offshore portion of Mexico's prolific Sureste Basin.
The Zama-3 appraisal well is the third and final appraisal penetration drilled by the Consortium to better define the resource potential of the Zama discovery. Talos is the operator of Block 7 in a consortium with its partners Sierra Oil & Gas, a Wintershall DEA company, and Premier Oil.
Based on the preliminary information collected to date, Talos expects the updated value will fall in the upper half of the previously provided pre-appraisal guidance range of 400-800 MMBoe.
The results specific to the Zama-3 well were as follows:
- The well was drilled downdip of the Zama-1 well, allowing the well to penetrate the oil-water contact in the southern portion of the field, consistent with the geophysical flat spot seen throughout the downdip edge of the reservoir. The well logged approximately 1,000 feet (greater than 300 meters) of gross true vertical depth ("TVD") sand and 748 feet (228 meters) of gross TVD pay bearing section, consistent with expectations for the southern extension of the Zama reservoir. The net to gross ratio across the entire pay section is consistent with prior penetrations, with Zone 3 significantly exceeding expectations with a net to gross ratio of approximately 85-90%. Zones 3 and 4 comprise the majority of the Zama resource potential.
- Talos captured 717 feet (219 meters) of whole core with 99% recovery, breaking its own record for the longest whole core from a single well in the history of offshore Mexico. The additional core samples will provide critical information to assist the Consortium in evaluating expected recovery factors, completion techniques and other details to aid in optimizing recovery in the Zama field.
- Operations for the Zama-3 well were concluded approximately nine days ahead of schedule and within budget. The entire three-penetration appraisal program was finalized 39 days ahead of schedule and under budget. The appraisal was conducted without any lost time incidents or environmental issues over approximately 600,000 man-hours. Local contractors and service providers were again critical in delivering positive results for the Consortium.
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