Changes

==Map construction==

==Map construction==

===Structure contour maps===

===Structure contour maps===

The geometry of the field is defined by a series of structure contour maps of key reservoir horizons ([[:Image:Drive-mechanisms-and-recovery_fig3.png|Figure 6a]]). The maps, showing several levels through the prospect or reservoir, are generated from well elevations of reference beds or depth-converted seismic sections (see [[Subsurface maps]]). Workstations for three-dimensional [[seismic interpretation]] considerably aid the process because the shapes of the structure contours and the faults are readily observable on horizontal seiscrop sections generated by the workstation.<ref name=Brown_1986>Brown, A. R., 1986, Interpretation of three-dimensional seismic data: AAPG Memoir 42, 194 p.</ref> Contour maps can be quickly generated from stacked seiscrop sections.

The geometry of the field is defined by a series of structure contour maps of key reservoir horizons ([[:Image:Drive-mechanisms-and-recovery_fig3.png|Figure 6a]]). The maps, showing several levels through the prospect or reservoir, are generated from well elevations of reference beds or depth-converted seismic sections (see [[Subsurface maps]]). Workstations for three-dimensional [[seismic interpretation]] considerably aid the process because the shapes of the structure contours and the faults are readily observable on horizontal seiscrop sections generated by the workstation.<ref name=Brown_1986>Brown, A. R., 1986, Interpretation of three-dimensional seismic data: [http://store.aapg.org/detail.aspx?id=1025 AAPG Memoir 42], 194 p.</ref> Contour maps can be quickly generated from stacked seiscrop sections.

[[File:Drive-mechanisms-and-recovery fig3.png|thumbnail|'''Figure 6.''' a) Structure map and b) restored structure map showing fault gaps removed. Remaining gaps and overlaps in the restored faults represent geometric incompatibilities in the interpretation. (From <ref name=Galloway and Hobday_1983>Galloway, W. E., and D. K. Hobday, 1983, Terrigenous clastic depositional systems applications to petroleum, coal, and uranium exploration: New York, Springr Verlag, 423 p.</ref>.)]]

[[File:Drive-mechanisms-and-recovery fig3.png|thumbnail|'''Figure 6.''' a) Structure map and b) restored structure map showing fault gaps removed. Remaining gaps and overlaps in the restored faults represent geometric incompatibilities in the interpretation. (From <ref name=Galloway and Hobday_1983>Galloway, W. E., and D. K. Hobday, 1983, Terrigenous clastic depositional systems applications to petroleum, coal, and uranium exploration: New York, Springr Verlag, 423 p.</ref>.)]]