| petroleum | 0.41 | 0.9 | 2897 | 9 | 51 |
| petroleum jelly | 1.39 | 0.3 | 4322 | 15 | 21 |
| petroleum traders | 0.39 | 0.4 | 1203 | 17 | 75 |
| petroleum software | 0.3 | 0.3 | 9090 | 18 | 48 |
| petroleum technology degree | 1.05 | 0.6 | 7349 | 27 | 7 |
| petroleum industry software | 0.64 | 0.3 | 1505 | 27 | 73 |
| petroleum ether | 0.61 | 0.8 | 5911 | 15 | 38 |
| petroleum engineering | 0.09 | 1 | 7429 | 21 | 85 |
| petroleum engineer degree online | 1.89 | 0.2 | 3722 | 32 | 78 |
| petroleum industry | 0.1 | 0.1 | 6748 | 18 | 36 |
| petroleum land management certificate | 0.06 | 1 | 9086 | 37 | 23 |
| petroleum engineering salary in texas | 0.82 | 0.4 | 6698 | 37 | 57 |
| petroleum engineering courses | 0.01 | 0.2 | 7529 | 29 | 72 |
| petroleum engineering schools | 0.67 | 0.3 | 420 | 29 | 1 |
| petroleum land management degree | 0.97 | 0.2 | 7848 | 32 | 77 |
| petroleum engineering degree programs | 0.17 | 0.2 | 5361 | 37 | 41 |
| petroleum service company | 1.4 | 0.3 | 4645 | 25 | 68 |
| petroleum engineering online programs | 1.19 | 0.2 | 5351 | 37 | 41 |
| petroleum wholesale | 0.82 | 0.2 | 6089 | 19 | 55 |
| petroleum oil and gas | 1.51 | 0.7 | 282 | 21 | 35 |
| petroleum services | 0.55 | 0.4 | 4973 | 18 | 33 |
| petroleum engineering degree online | 1.51 | 1 | 8092 | 35 | 100 |
| petroleum boiler oni | 1.03 | 0.3 | 5685 | 20 | 61 |
| petroleum system | 0.65 | 0.2 | 4748 | 16 | 10 |
| petroleum coke dust release | 1.74 | 0.7 | 2755 | 27 | 14 |
