| Similarity | Rank | |
|---|---|---|
| Marcellus | 0.879 | 34448 |
| shale | 0.870 | 17984 |
| Bakken | 0.863 | 53247 |
| Permian | 0.807 | 68603 |
| shales | 0.774 | 97010 |
| Anadarko | 0.759 | 97984 |
| Drilling | 0.756 | 33103 |
| oilsands | 0.738 | 96475 |
| drilling | 0.730 | 8037 |
| Utica | 0.728 | 47346 |
| fracking | 0.721 | 21463 |
| Coal | 0.716 | 17487 |
| Fracking | 0.707 | 62210 |
| fracturing | 0.706 | 29911 |
| Williston | 0.702 | 70809 |
| drillers | 0.700 | 78745 |
| Basin | 0.698 | 13536 |
| CSG | 0.696 | 64462 |
| Methane | 0.689 | 69623 |
| Fuels | 0.678 | 48822 |
| Uranium | 0.676 | 45052 |
| Pipelines | 0.671 | 91389 |
| Aquifer | 0.667 | 88850 |
| Enbridge | 0.666 | 59217 |
| Groundwater | 0.662 | 66053 |