• Developed integrated high-frequency reservoir stratigraphic and fluid contact analysis to identify by- passed oil opportunities for production optimization. • Implemented appropriate production optimization and depletion strategy through high-frequency reservoir stratigraphic framework.• Developed strategic optimization initiatives to address marginal reservoirs through pilot execution. • Utilized advanced oil fingerprinting techniques to analyze oil production allocation and identify alternative production optimization scenarios.• Led cross-functional teams in the monthly well/field review process, gas to oil well conversion, workover/well intervention, and new zone behind pipe proposals.

• Played a key role in optimizing production by providing technical recommendations for workover and well intervention, accompanied by the implementation of suitable reservoir depletion strategies.• Conducted fluid contact analysis for earth model application in support of a well development project, aiming to identify and capitalize on additional optimization opportunities.• Assessed the feasibility of the natural dumpflood optimization methodology, pinpointing potential field candidates through comprehensive reservoir pressure and geology & geophysics (G&G) analyses.

• Implemented heat management strategy to manage steam flood injection in Duri Field, heavy oil operation.• Utilized a dynamic temperature and saturation model to identify opportunities for heat maintenance and production optimization.• Evaluated and monitored the dynamic reservoir behavior through regular acquisition of cased-hole log data (e.g. temperature, sigma, and C/O logs).

• Carried out routine assessments of wells and fields for over 80 small fields located within Rokan Block.• Provided comprehensive recommendations for all potential workover and well intervention options, including perforation, stimulation, water shut-off, and well reactivation or conversion.• Led the internal review process for new zone behind pipe proposals and developed communication strategies directed towards external stakeholders to secure approval.

• Conducted thorough evaluations to assess potential new exploration opportunities, focusing on prospect identification and resource estimation within the Southern Bekasap Region, particularly in the Ayu-Asih Area.• Provided support to the Senior Geologist by participating in the observation of exploration drilling operations and facilitating data acquisition processes, including open hole logging, core handling, and Vertical Seismic Profiling (VSP).

• Facilitated the integration of geoscience data and information to construct a regional petroleum system database for Pertamina UTC – Business Development. This database was utilized to identify new exploration opportunities in Northern and Western Africa, as well as Southern America.• Conducted lead and prospect identification, risk assessment, and resource estimation within Puri Block, Central Sumatera.