Changes

[[file:subsurface-maps_fig4.png|thumb|{{figure number|4}}(a) Cross section and (b) net pay Isopach map of the Strachan gas field, western Canada. Contour Interval is 100 ft. (From <ref name=pt06r55>Hriskevich, M. E., Faber, J. M., Langton, J. R., 1980, [http://archives.datapages.com/data/specpubs/fieldst2/data/a012/a012/0001/0300/0315.htm Strachan and Ricinus West gas fields], Alberta, Canada, in Halbouty, M. T., ed., Giant Oil and Gas Fields of the Decade 1968–1978: AAPG Memoir 30, p. 315–327.</ref>.)]]

[[file:subsurface-maps_fig4.png|thumb|{{figure number|4}}(a) Cross section and (b) net pay Isopach map of the Strachan gas field, western Canada. Contour Interval is 100 ft. (From <ref name=pt06r55>Hriskevich, M. E., Faber, J. M., Langton, J. R., 1980, [http://archives.datapages.com/data/specpubs/fieldst2/data/a012/a012/0001/0300/0315.htm Strachan and Ricinus West gas fields], Alberta, Canada, in Halbouty, M. T., ed., Giant Oil and Gas Fields of the Decade 1968–1978: AAPG Memoir 30, p. 315–327.</ref>.)]]

Interpretations of depositional trends, pre- and syndepositional structural development, and reservoir storage capacity are based in large part on thickness information. An accurate meaning of thickness is critical in these and other analyses (see [[Conversion of well log data to subsurface stratigraphic and structural information]]).

Interpretations of [[Depositional environments|depositional trends]], [[Predepositional structure|pre-]] and [[Syndepositional structure|syndepositional]] structural development, and reservoir [[storage capacity]] are based in large part on thickness information. An accurate meaning of thickness is critical in these and other analyses (see [[Conversion of well log data to subsurface stratigraphic and structural information]]).

===Isopach===

===Isopach===