Carlos Esteban Alfonso

-Coordination of the reservoir engineering technical plans and operative/monitoring of the current in-development fields -Leader of the Colombian reservoir group for new Opps analysis and development. -Evaluation of corporate reserves. -Reservoir simulation and modeling -Monitoring to waterflooding projects. -Evaluation of EOR opportunities for projects with low reserves but high levels of contingent resources. -Pressure Transient Analysis -Colciencias Research Project.

-Assets development and Reservoir management, characterization, 3Dmodelling, reservoir simulation. -Accountability and evaluation of the corporate Reserves & Resources (Data gathering, Volumetric evaluation, Development Plans evaluation - Production forecasting, Static & Dynamic model , Economical evaluation, validation of results of third party companies) -Reservoir Simulation -New prospects evaluation. -PBU interpretation & Nodal Analysis

-Reservoir simulation and production simulation of the Casabe field. In charge of building the model for the waterflooding design. -Leader in the optimization of the vertical efficiency of injectivity in the Selective string wells/injection wells. -Follow up to the waterflooding project. -Complete nodal Analysis for ALS design and Reservoir management optimization. Working in the implementation of a Frictional factor for the injection wells in the software of Schlumberger

-Responsible for creating a model which gives a solution of the low reservoir injectivity in some intervals in the selective string wells in Casabe oilfield. This research allows to create a methodology to design fixed hole size in WFR, and conclude in a new equation of Darcy flow including a parameter of Inertial Friction Coefficient, through the match of the logs.

-In charge of the support and evaluation of the electric logs, XPT (Pressure test), and MDT, in order to determine the intervals to be perforated and its productivity. It included a software programmation to determine the total productivity for the three formations (Colorado, Mugros y La Paz) -Supporting the injection models and determination of the number and MD of the packers for the selective string in order to maximize the vertical efficiency.