| 1 | Skyles Drilling Inc. | 910 | 3,573 | 5,397 |
| 2 | Youngberg Pump & Well Drilling | 375 | 829 | 920 |
| 3 | Westerberg Drilling | 216 | 962 | 1,937 |
| 4 | Olsen Well Drilling & Pump | 136 | 136 | 177 |
| 5 | Alpine Resources LLC | 59 | 60 | 655 |
| 6 | Malcolm Drilling Co. Inc. | 56 | 56 | 945 |
| 7 | Ted Pulliam Well Drilling | 55 | 712 | 931 |
| 8 | Arrow Drilling | 45 | 208 | 1,522 |
| 9 | Mack Drilling Co. | 41 | 57 | 2,791 |
| 10 | Younberg Pump & Well Drilling LLC | 39 | 39 | 46 |
| 11 | R Stadeli & Sons Well & Pump Inc. | 37 | 43 | 161 |
| 12 | Steve Kaser | 33 | 60 | 1,241 |
| 13 | Jones Well Drilling Co. Inc. | 24 | 28 | 2,721 |
| 14 | Glacier Drilling & Dewatering | 22 | 22 | 1,449 |
| 15 | M & M Well Drilling | 18 | 22 | 297 |
| 16 | Schneider Water Services | 17 | 26 | 164 |
| 17 | A M Jannsen Well Drilling Co. Inc. | 16 | 121 | 1,744 |
| 18 | Rick Wallaert Well Drilling | 13 | 101 | 109 |
| 19 | All Seasons Well Drilling | 12 | 17 | 525 |
| 20 | Griffin Contract Dewatering LLC | 12 | 12 | 373 |
| 21 | Grossen's Well Drilling | 10 | 48 | 354 |
| 22 | Blue Water Drilling Co. Inc. | 9 | 56 | 2,203 |
| 23 | Hansen Drilling Co. Inc. | 8 | 48 | 378 |
| 24 | Stratus Corp | 8 | 10 | 108 |
| 25 | Sippel Well Drilling Inc. | 7 | 39 | 2,102 |
| 26 | Land Owner | 5 | 214 | 1,454 |
| 27 | Prepared BY Owrd Staff | 5 | 49 | 1,283 |
| 28 | Hendrickson Well Drilling Inc. | 5 | 20 | 1,945 |
| 29 | Oregon Trail Well Service LLC | 4 | 4 | 146 |
| 30 | Pli Systems | 4 | 4 | 149 |
| 31 | Mcmullen Drilling Corp. | 3 | 10 | 1,329 |
| 32 | Cascade Drilling LP | 3 | 8 | 325 |
| 33 | Holt Services Inc. | 3 | 3 | 70 |
| 34 | K Consulting | 3 | 3 | 88 |
| 35 | Alpine Resourcs LLC | 3 | 3 | 78 |
| 36 | Casey Jones Well Drilling | 2 | 129 | 5,361 |
| 37 | Chuck Stadeli | 2 | 4 | 28 |
| 38 | Nugent Drilling Co. | 2 | 3 | 2,552 |
| 39 | Mcmullen Well Drilling Corp | 2 | 2 | 191 |
| 40 | Robert D Miller Consulting | 1 | 4 | 92 |
| 41 | Stettler Supply Co. | 1 | 3 | 168 |
| 42 | Ron Robinson Well Drilling | 1 | 2 | 646 |
| 43 | Abbas Well Drilling Co. | 1 | 1 | 3,291 |
| 44 | Carpenter Drilling | 1 | 1 | 107 |
| 45 | A & P Pump Service LLC | 1 | 1 | 169 |
| 46 | Skyles Drilling & Supply | — | 1,117 | 1,222 |
| 47 | Steinman Brothers | — | 1,102 | 1,193 |
| 48 | Steinman Brothers Drilling Co. | — | 868 | 1,061 |
| 49 | S & M Drilling & Supply Inc. | — | 761 | 866 |
| 50 | Ross A Jannsen Well Drilling | — | 573 | 590 |
| 51 | Keller Well Drilling Co. | — | 548 | 603 |
| 52 | Youngberg Drilling | — | 368 | 545 |
| 53 | R Stadeli & Sons Inc. | — | 354 | 1,766 |
| 54 | Beck Well Drilling | — | 282 | 427 |
| 55 | Tolleson Drilling Co. | — | 245 | 248 |
| 56 | B & G Drilling | — | 233 | 282 |
| 57 | All Ways Drilling | — | 228 | 232 |
| 58 | Lanz Well Drilling | — | 225 | 239 |
| 59 | Well ID Application | — | 222 | 2,794 |
| 60 | A M Jannsen Drilling | — | 206 | 2,026 |
| 61 | American Well Drilling Inc. | — | 206 | 532 |
| 62 | Ray Borchers Well Drilling | — | 197 | 315 |
| 63 | Haakon Bottner Drilling Co. | — | 196 | 317 |
| 64 | D V Wyland & Co. Inc. | — | 181 | 197 |
| 65 | Olsen Well Drilling Inc. | — | 171 | 203 |
| 66 | Calvin C Bram Well Drilling | — | 167 | 200 |
| 67 | R J Strasser Drilling Co. | — | 162 | 410 |
| 68 | Mcinally Well Drilling | — | 159 | 196 |
| 69 | Friesen Drilling Co. Inc. | — | 153 | 514 |
| 70 | Brant Well Drilling | — | 135 | 153 |
| 71 | Dan Merrill Drilling | — | 122 | 136 |
| 72 | Owrd Staff | — | 115 | 597 |
| 73 | Estacada Well Drilling | — | 115 | 117 |
| 74 | Schneider Equipment Co. | — | 111 | 470 |
| 75 | Swift Water Well Drilling Inc. | — | 109 | 156 |
| 76 | J W Beck Well Drilling | — | 102 | 259 |
| 77 | Donnelly Drilling Co. | — | 94 | 117 |
| 78 | Anthony Well Drilling | — | 93 | 116 |
| 79 | Willamette Drilling Co. | — | 88 | 3,018 |
| 80 | Gaarsland Drilling Co. | — | 81 | 85 |
| 81 | Turner Drilling Co. Inc. | — | 80 | 322 |
| 82 | Andy M Jannsen Well Drilling | — | 73 | 82 |
| 83 | Ralph Turner Drilling Co. | — | 70 | 647 |
| 84 | West Coast Drilling | — | 69 | 474 |
| 85 | A O Olsen Well Drilling | — | 69 | 85 |
| 86 | O E Jannsen Drilling Co. | — | 68 | 72 |
| 87 | Simons & Gregory | — | 66 | 69 |
| 88 | Anthony Well Drilling & Pumps, Inc. | — | 65 | 87 |
| 89 | J W Beck Welldrilling | — | 62 | 63 |
| 90 | Ross Jannsen Well Drilling | — | 58 | 60 |
| 91 | Macs Well Drilling | — | 58 | 58 |
| 92 | Staco Well Services | — | 53 | 324 |
| 93 | Barron & Strayer | — | 53 | 152 |
| 94 | F & S Well Drilling | — | 53 | 55 |
| 95 | J F Terrell Well Drilling | — | 50 | 108 |
| 96 | Merrill Drilling Inc. | — | 50 | 56 |
| 97 | Exeter Water Well Drilling | — | 49 | 74 |
| 98 | John W Beck Well Drilling | — | 44 | 71 |
| 99 | D V Wyland Co. | — | 42 | 45 |
| 100 | Barnett Drilling & Pumps | — | 40 | 41 |
| 101 | B & S Drilling Co. | — | 38 | 55 |
| 102 | Mike Smith Well Drilling | — | 38 | 38 |
| 103 | John Meeker Well Drilling | — | 29 | 93 |
| 104 | Borchers Drilling Inc. | — | 27 | 48 |
| 105 | Cris-Well Drilling Co. | — | 27 | 36 |
| 106 | E M Gregory Drilling Co. | — | 27 | 34 |
| 107 | Stadeli Drilling Co. | — | 26 | 101 |
| 108 | Pacific Well Drilling | — | 25 | 41 |
| 109 | Arrow Drilling & Supplies | — | 24 | 114 |
| 110 | S & M Drilling | — | 24 | 34 |
| 111 | Jensen Drilling Co. | — | 23 | 408 |
| 112 | Miracle Drilling Co. | — | 19 | 35 |
| 113 | Flores Well Drilling | — | 18 | 152 |
| 114 | Meeker Well Drilling | — | 18 | 59 |
| 115 | Turner Well Drilling | — | 14 | 436 |
| 116 | Geo-Tech Explorations | — | 14 | 384 |
| 117 | Gray Well Drilling Inc. | — | 13 | 795 |
| 118 | Beier & Waldroop Well Services Inc. | — | 13 | 231 |
| 119 | Bryant Well Drilling | — | 13 | 104 |
| 120 | Clouser Drilling Inc. | — | 12 | 5,007 |
| 121 | Monders Drilling Inc. | — | 12 | 491 |
| 122 | Murray Well Drilling | — | 12 | 150 |
| 123 | Corvallis Drilling Co. Inc. | — | 11 | 2,745 |
| 124 | Stites Well Drilling | — | 11 | 89 |
| 125 | Milo Schneider Equipment Co. | — | 10 | 153 |
| 126 | J A Sneed & Sons | — | 9 | 1,087 |
| 127 | Miller-Robinson & West | — | 9 | 424 |
| 128 | Bello Well Drilling | — | 9 | 292 |
| 129 | Long Drilling | — | 9 | 269 |
| 130 | Larry Evey Well Drilling | — | 8 | 873 |
| 131 | Miller West Well Drilling | — | 8 | 116 |
| 132 | S & H Well Drilling | — | 8 | 35 |
| 133 | Deceased | — | 8 | 34 |
| 134 | Dickerson Well Drilling | — | 7 | 1,647 |
| 135 | Don Feakin | — | 7 | 384 |
| 136 | A J Gaunt & Son | — | 6 | 562 |
| 137 | Robinson Eola Drilling | — | 6 | 346 |
| 138 | Aqua-Tech Well Construction | — | 6 | 64 |
| 139 | George Zent & Sons | — | 6 | 33 |
| 140 | Duffield Brothers | — | 5 | 374 |
| 141 | Deceased/R. J. Strasser Drilling Co. | — | 5 | 38 |
| 142 | Wilcox Drilling And Pump Inc. | — | 4 | 1,006 |
| 143 | Schoen Electric & Pump | — | 4 | 405 |
| 144 | Miller & West | — | 3 | 486 |
| 145 | Tacoma Pump & Drilling Co. Inc. | — | 3 | 377 |
| 146 | Miller & West Drilling | — | 3 | 283 |
| 147 | Zander Drilling Co. | — | 3 | 153 |
| 148 | Robinson Drilling Wells&pumps | — | 3 | 118 |
| 149 | Mike Waldroop Well Drilling | — | 3 | 101 |
| 150 | Northwest Well Drilling | — | 3 | 78 |
| 151 | George Robinson Drilling | — | 3 | 64 |
| 152 | Boart Longyear | — | 3 | 46 |
| 153 | Richardson Well Drilling | — | 3 | 43 |
| 154 | Arms & Schilling | — | 3 | 43 |
| 155 | Submersible Pump & Drilling Co. | — | 3 | 31 |
| 156 | Rotary Drilling Company | — | 2 | 38 |
| 157 | Gerald D Olson | — | 2 | 350 |
| 158 | Eola Well Drilling | — | 2 | 341 |
| 159 | Lucore Drilling Co. | — | 2 | 202 |
| 160 | Orvail Buckner Well Drilling | — | 2 | 146 |
| 161 | Devlaeminck Well Drilling | — | 2 | 132 |
| 162 | Schoen Electric Inc. | — | 2 | 88 |
| 163 | Buds Well Drilling | — | 2 | 66 |
| 164 | Ted Schueler Well Drilling | — | 2 | 59 |
| 165 | Capitol Well Drilling Inc. | — | 2 | 50 |
| 166 | Melvin Search Well Drilling | — | 2 | 40 |
| 167 | Douglas H Delano | — | 2 | 35 |
| 168 | Western Water Development | — | 1 | 984 |
| 169 | Jeff Haboush Well Drilling | — | 1 | 406 |
| 170 | Ridders Well Drilling | — | 1 | 380 |
| 171 | Todd's Drilling Service | — | 1 | 319 |
| 172 | Crawford Well Drilling | — | 1 | 203 |
| 173 | L W Mutschler Well Drilling | — | 1 | 191 |
| 174 | Brandt Drilling Co. | — | 1 | 179 |
| 175 | Jerry Madsen Well Drilling | — | 1 | 172 |
| 176 | Byrd Drilling Co. | — | 1 | 114 |
| 177 | Evergreen Well Drilling | — | 1 | 112 |
| 178 | Art Clinton Well Drilling Co. | — | 1 | 109 |
| 179 | Bobs Well Drilling Inc. | — | 1 | 95 |
| 180 | Rodney C Erler | — | 1 | 84 |
| 181 | Robinson Drilling & Supply | — | 1 | 75 |
| 182 | Turner Water Well Drilling | — | 1 | 66 |
| 183 | Environmental West Exploration | — | 1 | 56 |
| 184 | Boart Longyear E & I | — | 1 | 39 |
| 185 | Paul & Florence Stadeli Inc. | — | 1 | 36 |
| 186 | Northwest Hydro-Fracturing | — | 1 | 29 |
| 187 | Testing | — | 1 | 28 |