He had long been interested in the potential of seep oil as a cheap alternative to whale oil.

The low elevation, corridors, and unstable building material allowed groundwater from the Nile to seep into the walls, causing the entire pyramid to sink into the ground and crack.

In many cases oil and gas is known to seep toward the surface as a hydrocarbon reservoir will usually leak or have leaked towards the surface through buoyancy forces overcoming sealing pressures.

Because both oil and natural gas are lighter than water, they tend to rise from their sources until they either seep to the surface or are trapped by a non permeable layer of rock.

There was a serious danger that the contents of the nuclear reactor would seep into the soil, and then leak into the Dnepr river, thus endangering the population of Kiev and other cities along the riverbanks.