Changes

==Capillary imbibition==

==Capillary imbibition==

Capillary imbibition transfers interconnected free hydrocarbon phases from fine-grained to coarse-grained layers. This force is dominant within source rocks—especially at their contact with coarser beds. If the layer is internal to the source rock (such as a silty streak), it will store these hydrocarbons until a continuous hydrocarbon network connects it with an external coarse-grained layer. If the coarse-grained layer is external, thick, and laterally extensive, it will act as a carrier bed and postexpulsion migration will begin. Capillary imbibition exceeds buoyancy as the force responsible for transferring the hydrocarbon phase to the carrier bed, resulting in downward as well as upward charging from source rocks.

Capillary imbibition transfers interconnected free hydrocarbon phases from fine-grained to coarse-grained layers. This force is dominant within source rocks—especially at their contact with coarser beds. If the layer is internal to the source rock (such as a silty streak), it will store these hydrocarbons until a continuous hydrocarbon network connects it with an external coarse-grained layer. If the coarse-grained layer is external, thick, and laterally extensive, it will act as a carrier bed and postexpulsion migration will begin. Capillary imbibition exceeds buoyancy as the force responsible for transferring the hydrocarbon phase to the carrier bed, resulting in downward as well as upward [[Calculating charge volume|charging]] from source rocks.

==Sediment compaction==

==Sediment compaction==