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The Gibraltar Case Study, Northern Llanos Foothills, Colombia. Success Of A Complex Technical Business In Complicated Environments

Abstract:

The Gibraltar discovery by Ecopetrol opened a frontier area of significant extent in the previously untested northern Llanos foothills province of the Eastern Cordillera of Colombia. The Gibraltar project when Ecopetrol captured the block had three main objectives and all were accomplished. The first objective was to verify or refute a structural geological model with a sidetrack that would reach the Paleocene Barco Formation and demonstrate the presence of hydrocarbons in the area. Ecopetrol´s hypothesis postulated that the well drilled originally by Occidental penetrated the backlimb of a single stack within a duplex structure in the central region of a triangle zone. This model was proven right after drilling three sidetracks. The Barco tested water with very low percentage of light hydrocarbons. The second purpose was to test presence and quality of hydrocarbons in the Mirador Formation. The original hypothesis …