Changes

==Section construction==

==Section construction==

<gallery mode=packed heights=200px widths=200px>

<gallery mode=packed heights=300px widths=300px>

Evaluating-structurally-complex-reservoirs_fig1.png|'''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.<ref name=Bengtson_1982 />)

Evaluating-structurally-complex-reservoirs_fig1.png|'''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.<ref name=Bengtson_1982 />)

Evaluating-structurally-complex-reservoirs_fig2.png|'''Figure 2.''' Predicted transverse and longitudinal cross sections and contour map derived from SCAT plots. Depths are subsea depths. (From Bengtsen.<ref name=Bengtson_1982 />)

Evaluating-structurally-complex-reservoirs_fig2.png|'''Figure 2.''' Predicted transverse and longitudinal cross sections and contour map derived from SCAT plots. Depths are subsea depths. (From Bengtsen.<ref name=Bengtson_1982 />)

Evaluating-structurally-complex-reservoirs_fig3.png|'''Figure 3.''' Cross section through an asymmetrical ramp anticline, Whitney Canyon field, Wyoming, with SCAT and isogen data superimposed. Uncomformities, axial planes, and inflection surfaces have been identified from the diameter data and projected away from the well bore. Isogens are contours of equal dip<ref name=Ramsay_1967></ref> and can constrain the shapes of folds in section. (From Lammerson, 1982{{citation needed}}.)

Evaluating-structurally-complex-reservoirs_fig3.png|'''Figure 3.''' Cross section through an asymmetrical ramp anticline, Whitney Canyon field, Wyoming, with SCAT and isogen data superimposed. Uncomformities, axial planes, and inflection surfaces have been identified from the diameter data and projected away from the well bore. Isogens are contours of equal dip<ref name=Ramsay_1967></ref> and can constrain the shapes of folds in section. (From Lammerson, 1982{{citation needed}}.)

Evaluating-structurally-complex-reservoirs_fig4.png|'''Figure 4.''' Modeling extensional fault shapes from the rollover geometry. (a) the Groshong<ref name=Groshong_1989b>Groshong, R. H., 1989b, Structural style and balanced cross sections in extensional terranes: Houston Geological Society Short Course Notes, Feb. 24-25, 128 p.</ref> method uses oblique simple shear with a reference grid constructed with a spacing equal to the fault heave. Distance 2 from the rollover up to regional elevation of the same reference bed is transferred to 2&prime;; likewise, 2&prime; + 4 is transferred to 4&prime; and so on to complete the fault trajectory. Interpolation between these points is carried out using a half grid spacing. (b) fault trajectory reconstruction by the Groshong<ref name=Groshong_1989b /> method uses simultaneous modeling of three horizons. Dashed trajectories are individual solutions; solid lines are the preferred solution. (From Hossack, unpublished data, 1988.)

Evaluating-structurally-complex-reservoirs_fig4.png|'''Figure 4.''' Modeling extensional fault shapes from the rollover geometry. (a) the Groshong<ref name=Groshong_1989b>Groshong, R. H., 1989b, Structural style and balanced cross sections in extensional terranes: Houston Geological Society Short Course Notes, Feb. 24-25, 128 p.</ref> method uses oblique simple shear with a reference grid constructed with a spacing equal to the fault heave. Distance 2 from the rollover up to regional elevation of the same reference bed is transferred to 2&prime;; likewise, 2&prime; + 4 is transferred to 4&prime; and so on to complete the fault trajectory. Interpolation between these points is carried out using a half grid spacing. (b) fault trajectory reconstruction by the Groshong<ref name=Groshong_1989b /> method uses simultaneous modeling of three horizons. Dashed trajectories are individual solutions; solid lines are the preferred solution. (From Hossack, unpublished data, 1988.)

Evaluating-structurally-complex-reservoirs_fig5.png|'''Figure 5.''' Example of a balanced section through a complex thrust ramp structure showing both the deformed and undeformed sections.<ref name=Mitra_1986>Mitra, S., 1986, [http://archives.datapages.com/data/bulletns/1986-87/data/pg/0070/0009/1050/1087.htm Duplex structures and imbricate thrust systems-Geometry, structural position, and hydrocarbon potential]: AAPG Bulletin, v. 70, p. 1087-1112.</ref>

Evaluating-structurally-complex-reservoirs_fig5.png|'''Figure 5.''' Example of a balanced section through a complex thrust ramp structure showing both the deformed and undeformed sections.<ref name=Mitra_1986>Mitra, S., 1986, [http://archives.datapages.com/data/bulletns/1986-87/data/pg/0070/0009/1050/1087.htm Duplex structures and imbricate thrust systems-Geometry, structural position, and hydrocarbon potential]: AAPG Bulletin, v. 70, p. 1087-1112.</ref>

</gallery>

</gallery>