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):
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 2000-2007
Infopipe also supplies Landgrid, Lots, and Tracts for most Mapping
Systems.
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