കെ.കെ.കെ.വി.എം.എച്ച്.എസ്സ്,പൊത്തപ്പള്ളി./അക്ഷരവൃക്ഷം/ How is oil extracted from oil sands ?

How is oil extracted from oil sands ? Oil sands are naturally occuring mixtures of sand,clay and water which are saturated with a dense and extremely thick form of petroleum called Bitumen. If the sands are near the surface,oil can be mined by digging a huge pit. The sand that is dug, is broken up and mixed with hot water to form slurry. The slurry is sent to a separation plant,where the oil is then removed from the sand,and sent to a refinary for processing. If the sands containing oil are buried deep in the Earth,steam is injected. The steam melts the bitumen which is then separated from the sand. The bitumen is pimped to the surface and sent fro proessing at a refinary. In another method,oxygen is pumped in,and fire started. The fire melts the oil,which is then pumped up. ഗായത്രി ആർ 8 ഡി കെ കെ െക െവി എം ഹയരാ്‍ സെക്കന്ററി സ്കൂൾ പൊത്തപ്പള്ളി തെക്ക് കുമാരപുരം അമ്പലപ്പുഴ ഉപജില്ല ആലപ്പുഴ അക്ഷരവൃക്ഷം പദ്ധതി, 2020 ലേഖനം  സാങ്കേതിക പരിശോധന - Sachingnair തീയ്യതി: 22/ 04/ 2020 >> രചനാവിഭാഗം - ലേഖനം