Acknowledgments

Antoine Guitton's paper in the previous report congealed a vague hypothesis into a testable theory with his presentation of migration with an areal source. Development of the 3D parallel code used the WEI libraries of Bob Clapp and Paul Sava. Their considerable infrastructure and willingness to explain it made this product obtainable in a much shorter amount of time than could otherwise be hoped.

Partial funding of this research is provided by grant ACS PRF$\char93 37141$-AC 2 from the Petroleum Research Fund.