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Line 24: + + − − [[File:Statistics-overview fig1.png|left|thumbnail|'''Figure 1.''' SCAT plots used to define the complex structure seen in the discovery well of the Rail Road Gap oil field, California. The five plot types are (from left to right) azimuth versus depth (A plot), dip versus depth (D plot), dip versus depth in the direction of greatest curvature (T plot), dip versus depth in the direction of least curvature (L plot), and dip versus azimuth (DVA plot). (From Bengtsen, 1982.)]]
Structurally complex reservoirs: evaluation (view source)
Revision as of 16:57, 8 January 2014
, 16:57, 8 January 2014→Section construction
===Structural style===
===Structural style===
Appropriate seismic lines, close to the line of section, define the structural style of the folds and faults, so this style should be incorporated directly into the section.<ref name=Dahlstrom_1970 /> Dip domain construction methods are popular guides to section drawing in both compressional and extensional systems.<ref name=Groshong_1989a />
Appropriate seismic lines, close to the line of section, define the structural style of the folds and faults, so this style should be incorporated directly into the section.<ref name=Dahlstrom_1970 /> Dip domain construction methods are popular guides to section drawing in both compressional and extensional systems.<ref name=Groshong_1989a />
[[File:Statistics-overview fig1.png|left|thumbnail|'''Figure 1.''' SCAT plots used to define the complex structure seen in the discovery well of the Rail Road Gap oil field, California. The five plot types are (from left to right) azimuth versus depth (A plot), dip versus depth (D plot), dip versus depth in the direction of greatest curvature (T plot), dip versus depth in the direction of least curvature (L plot), and dip versus azimuth (DVA plot). (From Bengtsen, 1982.)]]
===Use of dipmeter===
===Use of dipmeter===
Cross sections can be more highly constrained using statistical curvature analysis techniques (SCAT) on [[dipmeter]] data<ref name=Bengtson_1982>Bengtson, C. A., 1982, Structural and stratigraphic uses of dip profiles, in M. T Halbouty, ed., Deliberate Search for the Subtle Trap: AAPG Memoir 32, p. 31-45.</ref> ([[:Image:Statistics-overview_fig1.png|Figure 1]]). This method allows determination of the positions in a wellbore of important axial, crestal, and fault surfaces and their strike and dip ([[:Image:Statistics-overview_fig2.png|Figure 2]]). Hence, structures can be projected in section away from wellbores and used to sketch the structure in profile.
Cross sections can be more highly constrained using statistical curvature analysis techniques (SCAT) on [[dipmeter]] data<ref name=Bengtson_1982>Bengtson, C. A., 1982, Structural and stratigraphic uses of dip profiles, in M. T Halbouty, ed., Deliberate Search for the Subtle Trap: AAPG Memoir 32, p. 31-45.</ref> ([[:Image:Statistics-overview_fig1.png|Figure 1]]). This method allows determination of the positions in a wellbore of important axial, crestal, and fault surfaces and their strike and dip ([[:Image:Statistics-overview_fig2.png|Figure 2]]). Hence, structures can be projected in section away from wellbores and used to sketch the structure in profile.