| OP1 | Water is coming from one direction | |
| OP2 | Water is coming from all directions | |
| OP3 | Water is coming from more than one direction but not from all | |
| OP4 | Thief water production from overlying or underlying water reservoir | |
| OP5 | Multilayer reservoir with some reservoirs swept to a higher degree than others | |
| Fig. 1. WOR Sweep Diagnostic | ||
