In December 2019, Ecopetrol SA announced that Hocol Petroleum Ltd, their 100% owned subsidiary, and Lewis Energy Colombia are evaluating the Lewis Energy-operated Bullerengue SW-1 outpost well on contract block SSJN 1 in the Lower Magdalena Basin.   The Bullerengue SW-1 outpost spudded in July 2019 and is located about 3 km southwest of the Bullerengue 1 gas/condensate discovery well.  The well will likely have a proposed total depth of approximately 2,200 m (7,217 ft) and it is assumed to be targeting Miocene-Oligocene sandstones of the Cienaga de Oro Formation, the primary pay for the Bullerengue Field.  The SSJN 1 contract covers 1,672.7 sq km and was awarded to Lewis Energy Colombia (100%) on 18 December 2008. Hocol Petroleum Ltd farmed in a 50% interest in the block from Lewis Energy on 24 December 2009, and Lewis Energy controls the remaining 50% interest.  Background Information  The Bullerengue gas/condensate field was discovered in October 2015 by Bullerengue 1 new-field wildcat (NFW). The NFW was drilled to a TD of 2,286 m (7,500 ft) where it tested 2.5 MMcfg/d and 50 barrels of condensate in an unreported reservoir - possibly within the Oligocene to Miocene Age Cienaga de Oro Formation or the Eocene Age La Risa Formation. Five other wells have been drilled in the structure: Bullerengue Sur 1 to 4 and Bullerengue SW 1. The Bullerengue Sur 1 exploratory well found 25 m (80 ft) of Eocene Age gas pay over several horizons, Ecopetrol SA announced on 27 December 2019. The field started production in October 2015.
ewis Energy Colombia evaluating the Bullerengue SW-1 outpost located in contract block SSJN 1