• Petroleum - English

    Petroleum Traps part 2

     1. pinchout: are the result of the changes in deposition of the sediment. Thick layers of mud are covered by thinner layers of sand from migrating shoreline, or by the sand deposited by large rivers. As sea level changes, or rivers migrate, the different sand and mud layers are interwoven creating lenses or pinch-outs. These sand layers allow the petroleum to accumulate and the mud rock layers trap the petroleum. can create traps by burying truncated sandstone or limestone layers with layers of mudstone.  2. Carbonate Reef: are great places to trap oil. The open cavities between the corals create excellent reservoirs, and when the reef is buried by mud,…