One single well within the entire 10-02 will not tell you about what may lay 10 or 20 miles away.  Similarly problems in using wide array 2D seismic.  Its like the difference between HD tv and 1960s black and white resolution compared to modern 3D seismic.  If the same 2D were shot over Alpine field today it wouldn't even pick it up!  So although the data from two 80s shoots is good data it is simply insufficient and extremely limited in its ability to pick up fields.  Add to this old data set the fact that the USGS used a 35-36% estimated recovery rate to come up with their 10-02 estimates using known 1980s technology.  Even understanding the complexities of individual fields modern technology has vastly higher recovery rates than was estimated and used in the USGS report.  End conclusion is data, very good technically but very insufficient and porous; economic and technical parameters put on data afterwards, highly out of date.