The Spot Well Tool allows the
client to spot well data based upon footage calls and aliquot (quarter-quarter)
calls. Data may be imported from CSV spreadsheet (produced by Petra and other
tools), Excel, or directly loaded into the wells database. Output data include
Shapefiles, CSV or MapInfo MID/MIF Files for use in Petra, ArcView, and MapInfo.
The spotting algorithm
is performing as follows (SEE FIGURE 1 BELOW):
1. A point n' , an
estimate of the perpendicular projection point is produced by going along the
N-S line the FNL distance (this line may be curved).
2. A point e', an
estimate of the perpendicular projection point is produced by going along the
E-W line the FWL distance.
3. The slopes of the N-S line and the E-W line are
estimated from the o to n' and the o to e' vectors, respectively.
4. These
slopes along with the perpendicular projection is used to produce P , the
projected spot. This point implies the true perpendicular projection points n
and e.
Aliquot call spotting (quarter-quarter call) is done similarly.
The distances are produced by measuring along the section lines and are
multiplied by the appropriate scaling factor (i.e., NWSW would produced scaling
factors of .125 * South Side Section Distance FWL and .375 * West Side Section
Distance FNL). These distances are used to produce the spot using the above
spotting algorithm.
The tool has an
inverse function as well. Given coordinates, the tool will produce footage
calls.
The Spot Well
Tool is project oriented with Access databases for both grid and well databases.
The application requires Microsoft Access 2000-2010
