| Title | Bridging the Gap Between Geothermal and Oil&Gas in Mexico: Three HPHT Case Studies Using PTS-CCL-GR Logging |
|---|---|
| Authors | Carlos Cerón Rendón, Antonio Godinez Urban |
| Year | 2026 |
| Conference | World Geothermal Congress |
| Keywords | |
| Abstract | High-pressure/high-temperature (HPHT) logging workflows, originally proven in Mexico’s deep carbonate oilfields, are now migrating into geothermal operations, establishing a valuable cross-sector partnership. This paper presents three case studies with data acquired using a single HPHT PTS-CCL-GR (Pressure–Temperature–Spinner, Casing-Collar Locator, Gamma-Ray) toolstring in producing wells. Case 1: A °148C, 7678psi oil well in Veracruz undergoing workover operations, where a 24-hour coiled-tubing correlation pass reduced perforation-depth uncertainty to ±0.3 m and saved 12 hours of workover time. Case 2: A 250 °C geothermal producer in Puebla logged on slickline. The resulting PT profile proved congruent with expected values, GR aligned adequately with stratigraphic expectations, CCL correlated with the wellbore diagram and the Spinner identified the main production feed zone. Notably, the run marked a complete technology adoption cycle—from procurement and training to a successful first deployment—led in collaboration with the field operator. Case 3: A high-risk, 228 °C well in Baja California exhibiting declining output and confirmed casing integrity issues. Slickline logging qualitatively identified severe casing damage across a 46 m interval, supporting a workover that ultimately restored 7 MW of generation capacity. Across the campaign, HPHT PTS-CCL-GR reduced logging time by 36% and cost by 34% compared to conventional multi-tool programs. These results demonstrate that targeted technology transfer, combined with oil & gas expertise, can enhance integrity management and production optimization in high-enthalpy geothermal fields globally. |