Changes

[[file:evaluating-top-and-fault-seal_fig10-4.png|thumb|{{figure number|4}}See text for explanation.]]

[[file:evaluating-top-and-fault-seal_fig10-4.png|thumb|{{figure number|4}}See text for explanation.]]

Cross leakage commonly creates fault-dependent leak points limiting the percent.<ref name=ch10r76>Smith, D., A., 1966, Theoretical considerations of sealing and non-sealing faults: AAPG Bulletin, vol. 50, no. 2, p. 363–374.</ref><ref name=ch10r77>Smith, D., A., 1980, Sealing and non-sealing faults in the Gulf Coast Salt basin: AAPG Bulletin, vol. 64, no. 2, p. 145–172.</ref><ref name=ch10r2>Allan, U., S., 1989, Model for hydrocarbon [[migration]] and entrapment within faulted structures: AAPG Bulletin, vol. 72, no. 7, p. 803–811.</ref><ref name=ch10r35>Hardman, R., F., P., Booth, J., E., 1989, Structural interpretation of hydrocarbon traps sealed by basement normal fault block faults at stable flank of foredeep basins and at rift basins: AAPG Bulletin, vol. 73, no. 7, p. 813–840.</ref> One type of fault-dependent leak point is illustrated in the following figure. The coincidence of the hydrocarbon contact with the top of the sand juxtaposed across the fault is a juxtaposed lithology leak point (JLLP). Hydrocarbons are trapped only where there is sand/sand juxtaposition along the fault. Hydrocarbons leak across the sand/sand juxtapositions.

Cross leakage commonly creates fault-dependent leak points limiting the percent.<ref name=ch10r76>Smith, D., A., 1966, Theoretical considerations of sealing and non-sealing faults: AAPG Bulletin, vol. 50, no. 2, p. 363–374.</ref><ref name=ch10r77>Smith, D., A., 1980, Sealing and non-sealing faults in the Gulf Coast Salt basin: AAPG Bulletin, vol. 64, no. 2, p. 145–172.</ref><ref name=ch10r2>Allan, U., S., 1989, Model for hydrocarbon [[migration]] and entrapment within faulted structures: AAPG Bulletin, vol. 72, no. 7, p. 803–811.</ref><ref name=ch10r35>Hardman, R., F., P., Booth, J., E., 1989, Structural interpretation of hydrocarbon traps sealed by basement normal fault block faults at stable flank of foredeep basins and at rift basins: AAPG Bulletin, vol. 73, no. 7, p. 813–840.</ref> One type of fault-dependent leak point is illustrated in [[:file:evaluating-top-and-fault-seal_fig10-4.png|Figure 4]]. The coincidence of the hydrocarbon contact with the top of the sand juxtaposed across the fault is a juxtaposed lithology leak point (JLLP). Hydrocarbons are trapped only where there is sand/sand juxtaposition along the fault. Hydrocarbons leak across the sand/sand juxtapositions.

Identifying JLLPs is an important method of assessing percent fill in prospects and determining seal behavior in existing fields. JLLPs exist only if the fault is cross leaking.

Identifying JLLPs is an important method of assessing percent fill in prospects and determining seal behavior in existing fields. JLLPs exist only if the fault is cross leaking.