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Subject
- Geology47
- Petroleum47
- Natural gas11
- Petroleum reserves5
- Borings3
- Petroleum in submerged lands3
- Geology, Stratigraphic2
- Petroleum engineering2
- Petrology2
- Stratigraphic traps (Petroleum geology)2
- Analysis1
- Barite1
- Basins (Geology)1
- Cold weather conditions1
- Data processing1
- Erosion1
- Gas fields1
- Geochemistry1
- Groundwater1
- Groundwater recharge1