This two-well project is part of INTEVEP’s petrophysical research program for eastern Venezuela. Both wells are located in a deltaic alluvial to estuarine sequence of highly unconsolidated sands saturated with heavy oil. The objectives of this extensive study on two single wells, Number One well and Number Two well, were identical. The main objective was to identify water production in sands which have close to 85% oil saturation. A zone tested in the Number Two well produced no water, but a similar zone in Number One well did produce water.