Changes

[[:file:evaluating-top-and-fault-seal_fig10-33.png|Figure 1]] is an example of faults controlling the distribution of hydrocarbons within a Gulf Coast field. The field contains 33 separate reservoir sands. At each mapped reservoir level, the field is divided into three major compartments (A, B, D) by faults. Compartment D is almost always empty, while the other compartments commonly contain hydrocarbons. In only 5 of the 33 reservoirs does Compartment D contain hydrocarbons.

[[:file:evaluating-top-and-fault-seal_fig10-33.png|Figure 1]] is an example of faults controlling the distribution of hydrocarbons within a Gulf Coast field. The field contains 33 separate reservoir sands. At each mapped reservoir level, the field is divided into three major compartments (A, B, D) by faults. Compartment D is almost always empty, while the other compartments commonly contain hydrocarbons. In only 5 of the 33 reservoirs does Compartment D contain hydrocarbons.

Compartment D is commonly empty because a series of JLLPs along the western portion of Fault A allows hydrocarbons to leak into Compartment B and then across the eastern portion of Fault A into the next highest reservoir. Only when Fault Ais cross sealing does Compartment D contain hydrocarbons. Cross seal is created by shale-prone gouge with low SGRs or sand/shale juxtaposition.

Compartment D is commonly empty because a series of juxtaposed lithology leak points (JLLP) along the western portion of Fault A allows hydrocarbons to leak into Compartment B and then across the eastern portion of Fault A into the next highest reservoir. Only when Fault A is cross sealing does Compartment D contain hydrocarbons. Cross seal is created by shale-prone gouge with low shale gouge ratios (SGR) or sand/shale juxtaposition.

==Assessing percent fill==

==Assessing percent fill==