Sergio Lopez

Wellsite Geologist- Geosterreeng-Mud Logging-Drilling operation.

over 10 years of experience in geological operations and mud logging management for onshore, offshore, exploration and development projects. Specialized in geosteering and formation evaluation. Proven ability to conduct efficient drilling contract execution and coordinate multi-disciplinary project tasks to meet resource development objectives. Ready to leverage expertise in geology and project management to contribute to the innovative projects.

From 2020 to 2025. Wellsite Geologist and Senior Geologist in geosteering: Empresa Neuquina de Servicios de Ingeniería to Total Austral (Total Energies)

• Well Site Geologist and Senior Geologist in geosteering: In unconventional deposits, Vaca Muerta Fm, Neuquina basin (in Pichana, San Roque, La Escalonada and Rincón de la Ceniza field). Geosteering with StarSteer (Rogii).
• Responsibility as Wellsite Geologist: Supervision: "Formation Evaluation" from data of services Mud Logging, MWD/LWD Logging. Quality control of logs from the service company. Geological correlation-interpretation during drilling operations, Cutting-caving description, real time Pore pressure evaluation. Prepare and send the Daily Geological Report and Well data (Master log, ML ASCII, drilling activity, MWD/LWD LAS & PDF, Survey Data, GR, BHA's) to town.
• Attended the operations: DFIT by MPD and CWS (Weatherford Compact well shuttle), Cement job, RIH drill string and casing. Supervising the collection, processing and dispatching cutting samples.
• Geologist-geosteering (Geonavegador): In unconventional deposits, Vaca Muerta Fm, Neuquina basin. Geosteering with StarSteer (Rogii), supported by other parameters such as: lithology, chromatographic gas, drilling parameters, Gamma ray, image azimuth etc.
• Wells over 6000 m TD with a drain section (3000 m) and target zone as per proposal well, during the geosteering, the information from LWD MWD was interpreted in real time.
• The analysis data determined the position of the string in relation to the target zone.
• Projections were made to mark target and drill within the target zone, optimizing time and cost.

From 2015 to 2020 Geologist (Wellsite Geologist), Geoservices a Schlumberger Co. To Total Austral (Total Energies)

• Well Site Geologist and Senior Geologist in geosteering: In unconventional deposits, Vaca Muerta Fm, Neuquina basin.
• Geosteering with StarSteer (software).

From 2012 to 2015 Geologist-Wellsite Geologist, Geoservices a Schlumberger Co. To Total Austral

• Well Site Geologist and geosteering: In tight Sandstone conventional reservoir (Mulichinco Fm) and unconventional deposits, Vaca Muerta Fm, Neuquina basin. drilling and logging of wells to evaluate aquifers.

From 1997 to 2012 Total Drilling Control-Unit Manager, Mud Logging-Geoservices SA

• Unit Manager (Mud Logging Unit): Offshore drilling explorations wells in Golfo de San Jorge basin, and Austral basin to Repsol YPF (Aurora drilling team) and Enap Sipetrol. Onshore drilling operations exploration wells in Neuquina Basin, Total Austral. Total Drilling Control and Unit Manager: Petrobras in Austral basin Onshore.
• Offshore drilling operations, Carina and Geminis field, Austral basin, Tierra del Fuego to Total Austral. Onshore Neuquina basin, Total austral and Chevron Argentina. Total Drilling Control: Offshore Deep water: Campos, Santos and Espíritu Santos basin, in Brazil. Petrobras and Keer Mcgee.
• Onshore, Tarija basin, Bolivia: Tesoro Co. (development well), Pan American (Uztares), Total Austral.

Universidad Nacional de Tucumán Degree in Geological Sciences, Geology

• Tesis: GEOLOGIA MINERA DE MINA LA DESCUBRIDORA, SIERRA DE MAZAN, departamento Arauco, La Rioja.