Concession and Lease Boundary Delineation

This paper examines some practical aspects of geodesy and cartography applied to upstream operations. It reviews coordinate reference system issues associated with licence block descriptions, block boundary lines, well locations in proximity to boundaries and distance and area calculations. A study of leases in Texas has identified significant errors in the position of boundaries as recorded in oil industry databases and applications. This has resulted in mispositioning of existing wells in databases and of proposed development well locations when spudded.