The Chester formation
732 wells name this formation. The field is recorded on only 21 % of the register, so this is the minority that carries one.
| Measurement | Median | 90th percentile | Kansas median |
|---|---|---|---|
| Total depth | 5944 ft | 6550 ft | 2831 ft — deeper here |
What stands out on the Chester
The operator named on most of these records is Anadarko Petroleum Corp, on 56 of them (7.7%), ahead of Oxy Usa, INC (53) and Mobil Oil Corp (52). The oldest well here was completed in 1951 and the most recent in 2025, and the deepest reaches 9050 feet — Tucker 'm' 1, drilled in 1999.
Where it is produced
| County | Wells | Share |
|---|---|---|
| Meade | 183 | 25.0% |
| Seward | 161 | 22.0% |
| Stevens | 145 | 19.8% |
| Haskell | 119 | 16.3% |
| Clark | 94 | 12.8% |
| Finney | 12 | 1.6% |
| Grant | 8 | 1.1% |
| Stanton | 3 | 0.4% |
| Morton | 3 | 0.4% |
| Kearny | 2 | 0.3% |
| Scott | 1 | 0.1% |
| Trego | 1 | 0.1% |
In which fields
| Field | Wells | Share |
|---|---|---|
| Wildcat | 54 | 7.4% |
| Mckinney | 51 | 7.0% |
| Eubank | 40 | 5.5% |
| Larrabee | 27 | 3.7% |
| Pleasant Prairie | 24 | 3.3% |
| Cutter | 20 | 2.7% |
| Hoss Lake | 20 | 2.7% |
| Singley | 19 | 2.6% |
| Big Sand Creek | 18 | 2.5% |
| Unknown | 17 | 2.3% |
| Wide Awake | 16 | 2.2% |
| Shuck Northwest | 15 | 2.0% |
| Lahey | 15 | 2.0% |
| Gooch | 14 | 1.9% |
What happened to these wells — on the Chester
282 of the 732 wells on the Chester are classed as plugged and abandoned. 1 were plugged at the State’s expense because no responsible party could be found, and 70 sit on the register as inactive — neither producing nor plugged.
⚠️ Two fields in this register disagree, and we show both rather than pick one: across Kansas, 245,220 wells are classed as plugged but 92,867 of them carry no plugging date, while 26,002 wells carry a date under another class. Here, 283 of these wells have a date on file. What each class means.
An old well on land in Kansas?
1 wells in Kansas were plugged at the State’s expense, out of 732 on the register — the sign that an operator was gone. If you find a well on your land, report it and do not tidy it up: knocking over casing can make you the responsible party. This site reads the register; it does not plug wells. Tell us where and we pass the request to Kansas operators and consultants.
We recommend nobody and we are nobody's agent. We have no arrangement with any firm today — we are collecting these requests in order to go and find them. What we do with this.
The wells
| Lease and well | Operator | Field | Depth (ft) | Year | Plugged |
|---|---|---|---|---|---|
| Virginia Lee 1-31 API 15-175-20807 | R. J. Patrick Operating CO | Shuck North | 6236 | 1985 | State |
| Hush 6-9 API 15-119-21491 | O'brien Energy Resources Corp | Unnamed | 6000 | 2025 | — |
| Cox Trust 'b' 2-19 API 15-081-22280 | Mccoy Petroleum Corporation | Eubank Northeast | 5570 | 2025 | — |
| Cox Trust 'b' 4-19 API 15-081-22281 | Mccoy Petroleum Corporation | Eubank Northeast | 5600 | 2025 | — |
| Cox Trust 'b' 3-19 API 15-081-22282 | Mccoy Petroleum Corporation | Eubank Northeast | 5575 | 2025 | — |
| Sadie Grace 1-13 API 15-175-22297 | Agricultural Energy Services | Unnamed | 6170 | 2025 | — |
| Cox Trust 'b' 1-19 API 15-081-22274 | Mccoy Petroleum Corporation | Eubank Northeast | 5703 | 2024 | — |
| Fox Creek 1-33 API 15-119-21472 | O'brien Energy Resources Corp | Singley | 6220 | 2023 | — |
| Great Plains 1-33 API 15-119-21479 | O'brien Energy Resources Corp | Unnamed | 5975 | 2023 | — |
| Kiowa Hills 1-4 API 15-119-21283-0001 | O'brien Energy Resources Corp | — | 6395 | 2023 | — |
| Clayton 7-28 API 15-119-21434 | O'brien Energy Resources Corp | Singley | 6390 | 2019 | — |
| Warner 'g' 1 API 15-081-22063-0001 | Merit Energy Company, LLC | C4miles | 5700 | 2019 | — |
| Mcwilliams E 7 API 15-055-22484-0100 | Merit Energy Company, LLC | Cowgill | 5269 | 2018 | — |
| Bock A 2 API 15-081-22156-0001 | Merit Energy Company, LLC | Eubank | 5711 | 2018 | — |
| Singley West 6-29 API 15-119-21401 | O'brien Energy Resources Corp | Singley | 6319 | 2017 | — |
| Bock A 2 API 15-081-22156 | Merit Energy Company, LLC | Unnamed | 5711 | 2017 | — |
| Clayton 5-33 API 15-119-21405 | O'brien Energy Resources Corp | Mohler | 6430 | 2017 | — |
| Jacquart 1 API 15-081-22157 | Merit Energy Company, LLC | Eubank | 5608 | 2017 | — |
| Jacquart 4 API 15-081-22158 | Merit Energy Company, LLC | Eubank | 5700 | 2017 | — |
| Cimarron 1-34 API 15-119-21409 | O'brien Energy Resources Corp | Mohler | 6450 | 2017 | — |
| Clayton 6-28 API 15-119-21412 | O'brien Energy Resources Corp | Singley | 6452 | 2017 | — |
| River Bend 2 API 15-055-22469-0100 | Merit Energy Company, LLC | — | 4980 | 2017 | — |
| Mcwilliams E 5 API 15-055-22431-0100 | Merit Energy Company, LLC | Cowgill | 4689 | 2016 | — |
| Griffin Cox Central Unit 405w API 15-081-22134 | Merit Energy Company, LLC | Santa Fe Northeast | 5600 | 2016 | — |
| Owen Dowdy 4-36 API 15-189-22841 | American Warrior, INC | Shuck Northwest | 6350 | 2016 | — |
| Huff Land 1 API 15-119-21398 | Kenneth W. Cory, LTD | Johan | 6200 | 2016 | — |
| Cutter East Unit 906 API 15-175-22229 | Carl E. Gungoll Exploration, LLC | Cutter East | 5400 | 2015 | — |
| Parity 3-34 API 15-175-22231 | Raydon Exploration, INC | Wildcat | 4737 | 2015 | — |
| Jennie 1-24 API 15-055-22366 | Berexco LLC | Wildcat | 5247 | 2015 | — |
| Ppcu 503 API 15-081-22100-0100 | Merit Energy Company, LLC | Pleasant Prairie | 5720 | 2015 | — |
| Larrabee 5-4 API 15-119-21390 | O'brien Energy Resources Corp | Mohler | 6392 | 2015 | — |
| Rozelle 1-3 API 15-175-22234 | Palmer Oil, INC | Evalyn-condit | 6500 | 2015 | — |
| Hatcher 12-1 API 15-175-22237 | Palmer Oil, INC | Evalyn-condit | 6500 | 2015 | — |
| Cox Minerals 'a' 2 API 15-081-22055 | Oxy Usa, INC | Unnamed | 5652 | 2014 | — |
| Cox Minerals 'a' 3 API 15-081-22056 | Oxy Usa, INC | Unnamed | 5606 | 2014 | — |
| Umcc 'a' 1-17 API 15-119-21363 | Mccoy Petroleum Corp | Wildcat | 5700 | 2014 | — |
| Larrabee 4-4 API 15-119-21366 | O'brien Energy Resources Corp | Mohler | 6408 | 2014 | — |
| Cox 7-12 API 15-081-22072 | Abercrombie Energy, LLC | Santa Fe North | 5640 | 2014 | — |
| Mohler 1-34 API 15-119-21371 | O'brien Energy Resources Corp | Mohler | 6453 | 2014 | — |
| Umcc 'a' 2-17 API 15-119-21379 | Mccoy Petroleum Corporation | Wildcat | 5700 | 2014 | — |
| Cockefair 15-1 API 15-055-22340-0001 | Merit Energy Company, LLC | Ivanhoe East | 5262 | 2014 | — |
| Singley West 5-29 API 15-119-21328 | O'brien Energy Resources Corp | Singley | 6400 | 2013 | — |
| George 1-30 API 15-119-21331 | Raydon Exploration, INC | Kismet | 5921 | 2013 | — |
| Flipside 1-33 API 15-175-22203 | Raydon Exploration, INC | Sims-massoni Gas Area | 5878 | 2013 | — |
| Wiggains 12-12 API 15-189-22802 | Oxy Usa, INC | Gooch | 6915 | 2013 | — |
| Clayton 2-28 API 15-119-21346 | O'brien Energy Resources Corp | Singley | 6395 | 2013 | — |
| Cox 1-12 API 15-081-21572-0001 | Abercrombie Energy, LLC | Santa Fe North | 5635 | 2013 | — |
| Mary 'b' 2-10 API 15-189-22776 | Midwestern Exploration CO | Gooch | 6800 | 2012 | — |
| Churchman Bible 5 API 15-189-22777 | Wm Ks Energy Resources LLC | Cave | 5806 | 2012 | — |
| Crooked Creek Offset 4-8 API 15-119-21309 | O'brien Energy Resources Corp | Angell South | 6323 | 2012 | — |
| Utz 1-17 API 15-119-21310 | O'brien Energy Resources Corp | Angell South | 6396 | 2012 | — |
| Vail Offset 3-30 API 15-119-21313 | O'brien Energy Resources Corp | Singley | 6371 | 2012 | — |
| Stoltzfus 1-3 API 15-119-21314 | Oolite Energy Corp | Mohler | 6228 | 2012 | — |
| Adams 1-36 API 15-119-21279 | Hess Oil Company | Adams Ranch West | 6306 | 2011 | — |
| Heinson 10 API 15-119-21284 | Claassen Oil and Gas, INC | Singley | 6400 | 2011 | — |
| James 1-7 API 15-189-22765 | Midwestern Exploration CO | Gooch | 6789 | 2011 | — |
| Williams 'i' 1 API 15-081-21933 | Oxy Usa, INC | Victory | 5540 | 2011 | — |
| Etta Mccoy 'a' 1 API 15-081-21935 | Oxy Usa, INC | Wildcat | 5737 | 2011 | — |
| Wiggains 12-7 API 15-189-22767 | Oxy Usa, INC | Gooch | 6800 | 2011 | — |
| Rickers Ranch North 7-17 API 15-119-21296 | O'brien Energy Resources Corp | Angell South | 6300 | 2011 | — |
| Heinson, Ida 11 API 15-119-21305 | Claassen Oil and Gas, INC | Singley | 6422 | 2011 | — |
| Eubank North Unit 12-1 API 15-081-21518-0001 | Merit Energy Company, LLC | Eubank | 5575 | 2011 | — |
| Eubank North Unit Ph 1 3-4 API 15-081-21000-0001 | Merit Energy Company, LLC | Eubank | 5570 | 2011 | — |
| Wiggains 4-b12-35-36 API 15-189-22697 | Presco Western, LLC | Gooch | 6700 | 2010 | — |
| Will 4-1 API 15-119-21255 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5655 | 2010 | — |
| Heinson 1 API 15-119-00105-0001 | Kenneth W. Cory, LTD | Borchers | 6450 | 2010 | — |
| Adams 1a-5 API 15-119-21258 | Oil Producers Inc. of Kansas | Adams Ranch West | 6200 | 2010 | — |
| Stockham 'a' 1 API 15-081-21212-0001 | Oxy Usa, INC | Eubank | 5740 | 2010 | — |
| Heinson, Ida 9 API 15-119-21259 | Claassen Oil and Gas, INC | Singley | 6328 | 2010 | — |
| Shinogle Trust 1-20 API 15-119-21260 | Jo-allyn Oil Co., INC | Singley | 6260 | 2010 | — |
| Zm Farms 'a' 2 API 15-081-21915 | Oxy Usa, INC | Lockport Township | 5742 | 2010 | — |
| Wiggains 12-6 API 15-189-22758 | Oxy Usa, INC | Gooch | 6700 | 2010 | — |
| Candy 5-1 API 15-119-21232 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5650 | 2009 | — |
| Village 8-5 API 15-119-21233 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5650 | 2009 | — |
| Tahoe 7-1 API 15-119-21238 | Keith F. Walker Oil & Gas Co., LLC | Wildcat | 5650 | 2009 | — |
| Warden 3 API 15-175-20080-0001 | Oil Producers Inc. of Kansas | Evalyn-condit | 6305 | 2009 | — |
| Rickers Ranch 1-20 API 15-119-21196-0001 | O'brien Energy Resources Corp | Singley | 6075 | 2009 | — |
| Unruh 'b' 5-24 API 15-175-22127-0001 | Daystar Petroleum, INC | Thirty-one | 5900 | 2009 | — |
| Lola 3-21 API 15-189-22630 | Eog Resources, INC | Cutter South | 6500 | 2008 | — |
| Larrabee 1-4 API 15-119-21195 | O'brien Energy Resources Corp | Mohler | 6275 | 2008 | — |
| Rickers Ranch 1-20 API 15-119-21196 | O'brien Energy Resources Corp | Singley | 6075 | 2008 | — |
| Unruh 'b' 5-24 API 15-175-22127 | Daystar Petroleum, INC | Thirty-one Southwest | 5900 | 2008 | — |
| Shinogle 24-2 API 15-119-21198 | T-n-t Engineering, INC | Novinger | 6200 | 2008 | — |
| Blocker 21-2 API 15-119-21200 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5725 | 2008 | — |
| Graham 'b' 4 API 15-175-22132 | Oxy Usa, INC | Evalyn-condit | 6500 | 2008 | — |
| Devenie Kay 28-2 API 15-119-21201 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5753 | 2008 | — |
| Virginia City 17-1 API 15-119-21202 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5730 | 2008 | — |
| Lode 16-2 API 15-119-21204 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5716 | 2008 | — |
| Hobart 'a' 1-9r API 15-119-20621-0001 | Keith F. Walker Oil & Gas Co., LLC | Wildcat | 6000 | 2008 | — |
| Mahoney 1-2 API 15-189-20491-0001 | Xto Energy INC | Wide Awake | 6750 | 2008 | — |
| Dream 6-1 API 15-119-21210 | Keith F. Walker Oil & Gas Co., LLC | Hockett | 5600 | 2008 | — |
| Geronimo 1-3 API 15-175-22146 | Oil Producers Inc. of Kansas | Adams Ranch West | 6584 | 2008 | — |
| Preifert 'b' 2 API 15-175-22070-0001 | Oxy Usa, INC | Adamson | 6700 | 2008 | — |
| Tuttle 'a' 1 API 15-025-21460 | Unit Petroleum CO | Tuttle East | 5950 | 2008 | — |
| Ponderosa 33-1 API 15-119-21212 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5734 | 2008 | — |
| Seventy-six Ranch 1-1r API 15-119-20238-0001 | Keith F. Walker Oil & Gas Co., LLC | Meyers West | 6295 | 2008 | — |
| Kenneth 5-e14-28-33 API 15-081-21824 | Presco Western LLC | Santa Fe Northwest | 5800 | 2008 | — |
| Cartwright 20-1 API 15-119-21217 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5744 | 2008 | — |
| Comstock 9-2 API 15-119-21218 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5728 | 2008 | — |
| Landon 8-1 API 15-119-21219 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5675 | 2008 | — |
| Greene 8-3 API 15-119-21221 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5650 | 2008 | — |
| Ginger Kay 28-3 API 15-119-21223 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5750 | 2008 | — |
| Geisinger 4-11 API 15-175-21979-0002 | Eagle Creek Corporation | Thirty-one East | 5810 | 2008 | — |
| Skinner 'b' 2 API 15-189-10048-0001 | Oxy Usa, INC | Ski | 6595 | 2007 | — |
| Hoss 21-1 API 15-119-21172 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5900 | 2007 | — |
| Gardiner 26-3h API 15-025-21385-0100 | Eog Resources, INC | Color | 5543 | 2007 | — |
| Wonder 'c' 6 API 15-189-22583 | Oxy Usa, INC | Ski South | 6350 | 2007 | — |
| Little Joe 28-1 API 15-119-21180 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5715 | 2007 | — |
| Lola 1-21 API 15-189-22585 | Eog Resources, INC | Cutter South | 6210 | 2007 | — |
| Roy Green 4-19 API 15-175-20780-0001 | — | R.g | 6700 | 2007 | — |
| Ben 1-16r API 15-119-20998-0001 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 6000 | 2007 | — |
| Adam 28-1 API 15-119-21181 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5712 | 2007 | — |
| Branstetter Chester Unit 202-w API 15-081-21549-0001 | Oxy Usa, INC | Pleasant Prairie Se | 5600 | 2007 | — |
| Branstetter Chester Unit 305 API 15-081-21751 | Oxy Usa, INC | Pleasant Prairie Southeast | 5600 | 2007 | — |
| Wonder 'c' 7 API 15-189-22613 | Oxy Usa, INC | Ski South | 6500 | 2007 | — |
| Hop Sing 28-1r API 15-119-21059-0001 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake | 5756 | 2007 | — |
| Jagger Dean 34-1 API 15-119-21189 | Keith F. Walker Oil & Gas Co., LLC | Hoss Lake Southeast | 5804 | 2007 | — |
| Gabbert 1-23 API 15-025-21325 | Cobra Oil & Gas Corporation | Color | 5850 | 2006 | — |
| Taylor 1-23 API 15-025-21326 | Cobra Oil and Gas Corporation | Color | 5964 | 2006 | — |
| Mash 1-10 API 15-025-21327 | Keith F. Walker Oil and Gas Co., LLC | Big Sand Creek | 5750 | 2006 | — |
| Radar 14-1 API 15-025-21329 | Keith F. Walker Oil and Gas Co., LLC | Big Sand Creek | 5805 | 2006 | — |
| Gardiner 'h' 3-23 API 15-025-21335-0100 | E.o.g. Resources INC | Color | 5484 | 2006 | — |
| Cauthers 5 API 15-025-21337 | High Bluff Operating LLC | Mckinney | 5850 | 2006 | — |
| J. O. Cattle CO 1-1 API 15-055-21901 | E.o.g. Resources INC | Panoma Gas Area | 5400 | 2006 | — |
| Jethro 'r' 32-1 API 15-025-00073-0001 | Keith F. Walker Oil & Gas Co., LLC | Uncle Jed | 5835 | 2006 | — |
| Jennie Theis 2 API 15-025-21345 | Berexco INC | Mckinney | 6033 | 2006 | — |
| Klinger 1-23r API 15-025-21346 | Keith F Walker Oil & Gas CO LLC | Big Sand Creek | 5805 | 2006 | — |
| Kearny County Feedlot 5 API 15-081-21656 | Cimarex Energy CO | Pleasant Prairie | 5350 | 2006 | — |
| Kearny County Feedlot 4 API 15-081-21658 | Cimarex Energy CO | Pleasant Prairie | 5350 | 2006 | — |
| P. J. Trust 19-1 API 15-175-22051 | Eog Resources, INC | Salley | 6550 | 2006 | — |
| Stockstill 'a' 4 API 15-189-22419-0001 | Oxy Usa, INC | Ski Southwest | 6500 | 2006 | — |
| Hitch 'j' 4 API 15-175-20477-0001 | Oxy Usa, INC | Shuck North | 6250 | 2006 | — |
| P. J. Trust 19-2 API 15-175-22060 | Eog Resources, INC | Salley | 6350 | 2006 | — |
| Bingo 1-13 API 15-119-21139 | Keith F. Walker Oil & Gas Co., LLC | Mckinney | 6014 | 2005 | — |
| Gardiner 1-24 API 15-025-21276 | E.o.g. Resources INC | Color | 5900 | 2005 | — |
| Gardiner 1-25 API 15-025-21277 | E.o.g. Resources INC | Color | 5909 | 2005 | — |
| Kearny County Feedlot 3 API 15-081-21566 | Cimarex Energy CO | Pleasant Prairie | 5350 | 2005 | — |
| Gardiner 11-1 API 15-025-21279 | E.o.g. Resources INC | Keiger Creek Southwest | 5850 | 2005 | — |
| Gardiner 2-25 API 15-025-21285 | E.o.g. Resources INC | Color | 5900 | 2005 | — |
| Gardiner 1-14 API 15-025-21286 | E.o.g. Resources INC | Wildcat | 5900 | 2005 | — |
| Gardiner 1-15 API 15-025-21287 | E.o.g. Resources INC | Wildcat | 5900 | 2005 | — |
| Earp 1-3 API 15-119-21147 | Keith F. Walker Oil and Gas Co., LLC | Mckinney | 6615 | 2005 | — |
| Gardiner 2-26 API 15-025-21289 | E.o.g. Resources INC | Wildcat | 5900 | 2005 | — |
| Cauther 3 API 15-025-21292 | High Bluff Operating LLC | Mckinney | 5850 | 2005 | — |
| Gardiner 2-15 API 15-025-21296 | E.o.g. Resources INC | Wildcat | 5904 | 2005 | — |
| Gardiner 2-23 API 15-025-21263-0001 | Eog Resources INC | Color | 5900 | 2005 | — |
| Gardiner 2-36 API 15-025-21303 | E.o.g. Resources INC | Wildcat | 5942 | 2005 | — |
| Shaw 1-9 API 15-025-20765-0001 | Keith F. Walker Oil and Gas Co., LLC | Big Sand Creek | 5800 | 2005 | — |
| Mlp Tiller 'a' 2-10 API 15-081-21616 | Chesapeake Operating, INC | Eubank | 5555 | 2005 | — |
| Hawkeye 'a' 1-15 API 15-025-21317 | Keith F. Walker Oil and Gas Co., LLC | Big Sand Creek | 5825 | 2005 | — |
Other formations
- Squirrel 11,151
- Mississippian 10,791
- Arbuckle 10,446
- Bartlesville 10,057
- Chase Group 8,994
- Mississippi 5,201
- Lansing-kansas City 3,409
- Council Grove Group 2,462
- Morrow 1,978
- Arbuckle Group 1,866
- Oarb 1,814
- Lansing 1,580
- Cherokee Coals 1,493
- Peru 1,454
- Niobrara 1,349
- Cattleman 1,108
- Viola 1,051
- Kansas City 997
- Squirrel Sand 995
- Arbuckle, Lansing Kansas City 993
- Cherokee 988
- St Louis 947
- Mississippian System 934
- Chase 899
- Wayside 884
- Marmaton 825
- Mrw L 809
- Simpson 678
- Lansing Kansas City 576
- Mrw U 514
- Tucker 497
- Council Grove 417