The ACESS Basin Modeling System was developed to investigate phenomena associated with hydrocarbon migration up the Red Fault of the South Eugene Island Minibuses. It is thought that hydrocarbons moved up this fault to charge Pennzoil's Block 330 oil and gas fields, which are among the largest accumulations of oil and gas in the Gulf of Mexico. Because the strata that host the oil and gas reservoirs are less than 1.5 ma old, and some only -0.46 ma, because there are temperature anomalies along the Red Fault that are of the form that pulses of fluid flow up the fault might produce, and because some of the Pennzoil Reservoirs have produced more oil than is conventionally thought possible (up to and perhaps more than 100% of the oil originally in place), it is thought that hydrocarbon migration up the Red Fault may have occurred very recently of be taking place at the present day. As part of this project the Red Fault was drilled to investigate these possibilities. The fault was drilled at the transition zone between soft and hard overpressure; massive amounts of data were collected and analyzed.