The Trapp field
4,155 wells — 0.8% of the Kansas register.
What stands out in the Trapp field
The operator named on most of these records is Cities Service Oil CO, on 133 of them (3.2%), ahead of Coralena Oil CO (120) and W I Southern, INC (113). The oldest well here was completed in 0952 and the most recent in 2026, and the deepest reaches 4305 feet — Krug 1, drilled in 1967.
| Measurement | Median | 90th percentile | Kansas median |
|---|---|---|---|
| Total depth | 3361 ft | 3463 ft | 2831 ft — deeper here |
What happened to these wells — in the Trapp field
2,772 of the 4,155 wells in the Trapp field are classed as plugged and abandoned. 44 were plugged at the State’s expense because no responsible party could be found, and 29 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, 1,540 of these wells have a date on file. What each class means.
Producing formations
| Formation | Wells | Share |
|---|---|---|
| Arbuckle | 331 | 8.0% |
| Arbuckle Group | 25 | 0.6% |
| Arbuckle, Lansing Kansas City | 12 | 0.3% |
| Lansing-kansas City | 11 | 0.3% |
| Lansing | 4 | 0.1% |
| Kansas City Group | 4 | 0.1% |
| Lansing-kansas City, Arbuckle | 3 | 0.1% |
| Topeka | 3 | 0.1% |
| Lansing, Arbuckle | 3 | 0.1% |
| Arbuckle Lime | 2 | 0.0% |
The formation is recorded on only 21 % of Kansas wells, so this table describes the minority that carry one.
Where the field lies
Who operates there
| Operator | Wells | Share |
|---|---|---|
| Cities Service Oil CO | 133 | 3.2% |
| Coralena Oil CO | 120 | 2.9% |
| W I Southern, INC | 113 | 2.7% |
| Skelly Oil CO | 87 | 2.1% |
| Cities Service CO | 84 | 2.0% |
| Shell Oil CO | 77 | 1.9% |
| Continental Oil CO | 71 | 1.7% |
| Shell Petroleum Corp | 70 | 1.7% |
| Natl. Coop. Refinery Assoc | 70 | 1.7% |
| Mai Oil Operations, INC | 64 | 1.5% |
| Derby Oil CO | 61 | 1.5% |
| Stanolind Oil & Gas CO | 61 | 1.5% |
| Gulf Oil Corp | 49 | 1.2% |
| Popp Operating, INC | 48 | 1.2% |
An old well on land in Kansas?
44 wells in Kansas were plugged at the State’s expense, out of 4,155 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 |
|---|---|---|---|---|---|
| Mary Sellens 5 API 15-167-22946 | Prospect O&g | Trapp | 3367 | 1990 | State |
| Deal 5 API 15-009-20346-0001 | Patsy Conrade | Trapp | 3342 | 1984 | State |
| Dietz 4 API 15-167-21734 | Jolly J INC | Trapp | 3340 | 1982 | State |
| Laudick 1 API 15-009-22113 | Petroleum Energy, INC | Trapp | 3394 | 1981 | State |
| Johnston 2 API 15-009-22471 | Boger Brothers | Trapp | 3345 | 1981 | State |
| Dietz 1 API 15-167-21509 | Jolly J INC | Trapp | 3342 | 1980 | State |
| Robinson 1 API 15-009-21551 | Gordon Taylor | Trapp | 3354 | 1979 | State |
| Stoskopf 2 API 15-009-21610 | National Development | Trapp | 3452 | 1979 | State |
| Stoskopf 3 API 15-009-21655 | National Development | Trapp | 3452 | 1979 | State |
| Stoskopf 1 API 15-009-21489 | National Development Corp | Trapp | 3460 | 1978 | State |
| Mary Sellens 4 API 15-167-21122 | R.p. Nixon Operations | Trapp | 3393 | 1978 | State |
| Deal 8 API 15-009-20653 | Mc Connell C A | Trapp | 3330 | 1972 | State |
| Reif B 3 API 15-009-20356 | Three G Oil CO | Trapp | 3356 | 1969 | State |
| Deal 6 API 15-009-20392 | Mcconnell C A | Trapp | 3329 | 1969 | State |
| Deal 3 API 15-009-20221 | Mc Connell | Trapp | 3335 | 1968 | State |
| Deal 4 API 15-009-20257 | Mcconnell C A | Trapp | 3333 | 1968 | State |
| May Deal 2 API 15-009-30413 | Mcconnell C A | Trapp | 3304 | 1966 | State |
| George Sellens 13 API 15-167-19035 | Cooperative Refining Assoc | Trapp | 3321 | 1954 | State |
| Michaelis 1 API 15-167-07531 | Derby Oil CO | Trapp | 3550 | 1952 | State |
| Sellens 3 API 15-167-07719 | Sunray Oil Co., INC | Trapp | 3384 | 1950 | State |
| G. Sellens 12 API 15-167-07321 | Cooperative Refining Assoc | Trapp | 3304 | 1949 | State |
| G. Sellens 10 API 15-167-07322 | Cooperative Refining Assoc | Trapp | 3305 | 1949 | State |
| G. Sellens 11 API 15-167-07324 | Cooperative Refining Assoc | Trapp | 3215 | 1949 | State |
| Luerman 'b' 1 API 15-009-03523 | Bridgeport Oil CO | Trapp | 3366 | 1946 | State |
| Deal 1 API 15-009-16000 | Alpine Oil & Royalty CO | Trapp | 3335 | 1946 | State |
| George Sellens 9 API 15-167-19034 | Coralena Oil CO | Trapp | 3232 | 1946 | State |
| Bitter, J. G. 'b' 15 API 15-009-16177 | Shell Oil CO | Trapp | 3358 | 1941 | State |
| Bitter, J. G. 'b' 9 API 15-009-16171 | Shell Oil Co., INC | Trapp | 3354 | 1940 | State |
| G. Sellens 8 API 15-167-07296 | Coralena Oil CO | Trapp | 3302 | 1940 | State |
| M. Sellens 2 API 15-167-07696 | Sinclair Prairie Oil CO | Trapp | 3360 | 1940 | State |
| G. Sellens 6 API 15-167-07302 | Coralena Oil CO | Trapp | 3320 | 1939 | State |
| G. Sellens 5 API 15-167-07325 | Coralena Oil CO | Trapp | 3264 | 1939 | State |
| Landon 4 API 15-167-07770 | J. J. Hall Operating CO | Trapp | 3388 | 1939 | State |
| Michaelis 10 API 15-167-45869 | Darby Petr Corp | Trapp | 3320 | 1938 | State |
| Peterman, E.f 1 API 15-009-03705 | Shell Petroleum Corp | Trapp | 2355 | 1937 | State |
| G. Sellens 2 API 15-167-07300 | Coralena Oil CO | Trapp | 3309 | 1937 | State |
| G. Sellens 4 API 15-167-07301 | Coralena Oil CO | Trapp | 3299 | 1937 | State |
| Michaelis 5 API 15-167-07537 | Derby Oil CO | Trapp | 3273 | 1937 | State |
| Michaelis 2 API 15-167-07560 | Derby Oil CO | Trapp | 3254 | 1937 | State |
| G. Sellens 1 API 15-167-01629 | Coralena Oil CO | Trapp | 3065 | 1936 | State |
| Pauline 1 API 15-167-07817 | Phillips Petroleum Corp | Trapp | 3232 | — | State |
| Michaelis 5 API 15-167-07996 | Darby Petroleum | Trapp | 3304 | — | State |
| Michaelis 1 API 15-167-08010 | Darby Petroleum Corp | Trapp | 3287 | — | State |
| G. Sellens 5 API 15-167-07325-0001 | Vonfeldt Oil Operations, INC | Trapp | 3264 | — | State |
| Meharg 9 API 15-167-24150 | Mai Oil Operations, INC | Trapp | 3362 | 2026 | — |
| Meharg 10 API 15-167-24151 | Mai Oil Operations, INC | Trapp | 3326 | 2026 | — |
| Kramer A 11 API 15-167-24152 | Mai Oil Operations, INC | Trapp | 3410 | 2026 | — |
| Karst R 4 API 15-009-26429 | Berexco LLC | Trapp | 3450 | 2025 | — |
| Bogner 2-1 API 15-009-26455 | Talon Group LLC | Trapp | 3386 | 2025 | — |
| Meharg 8 API 15-167-24149 | Mai Oil Operations, INC | Trapp | 3340 | 2025 | — |
| Schneider B 8 Owwo API 15-009-16373-0001 | Talon Group LLC | Trapp | 3304 | 2024 | — |
| Davenport-peters 2 API 15-167-24145 | Rjm Company | Trapp | 3391 | 2024 | — |
| Bitter 8 API 15-167-24130 | Berexco LLC | Trapp | 3442 | 2023 | — |
| Stettinger 1 API 15-009-03664-0001 | Bennett & Schulte Oil CO | Trapp | 3291 | 2023 | — |
| Hoffman 2 API 15-009-26391 | Patterson Energy LLC | Trapp | 3420 | 2023 | — |
| Bogner 1-1 API 15-009-26392 | Talon Group LLC | Trapp | 3382 | 2023 | — |
| Bitter 2 API 15-009-26393 | Patterson Energy LLC | Trapp | 3450 | 2023 | — |
| Popp A-2 API 15-009-26401 | Prospect Oil & Gas Corp | Trapp | 3470 | 2023 | — |
| Cropp 3 API 15-009-26407 | Patterson Energy LLC | Trapp | 3577 | 2023 | — |
| Morgenstern 2-12 API 15-009-26322 | Patterson Energy LLC | Trapp | 3435 | 2022 | — |
| Legend 1 API 15-009-26337 | Palomino Petroleum, INC | Trapp | 3388 | 2022 | — |
| Morgenstern 4-12 API 15-009-26338 | Patterson Energy LLC | Trapp | 3650 | 2022 | — |
| Morgenstern 3-12 API 15-009-26339 | Patterson Energy LLC | Trapp | 3420 | 2022 | — |
| Hoffman 9 API 15-009-26342 | Connell, Mark Allen | Trapp | 3337 | 2022 | — |
| Bitter C 11 API 15-009-26343 | Darrah Oil Company, LLC | Trapp | 3377 | 2022 | — |
| Berrick B 1 API 15-167-24124 | Farmer, John O., INC | Trapp | 3360 | 2022 | — |
| Michaelis 'a' Swd API 15-167-23404-0001 | Patterson Energy LLC | Trapp | 3580 | 2021 | — |
| Maier 6 API 15-167-24107 | Jason Oil Company, LLC | Trapp | 3218 | 2021 | — |
| Ted Bitter 2-6 API 15-009-26309 | Darrah Oil Company, LLC | Trapp | 3427 | 2021 | — |
| Hipp 1 API 15-009-26312 | Charter Energy, INC | Trapp | 3434 | 2021 | — |
| Krug G 2 API 15-167-24099 | Rjm Company | Trapp | 3337 | 2020 | — |
| Schneider C 10 API 15-009-26254 | Larson Engineering, INC | Trapp | 3415 | 2019 | — |
| Batt 1-1 API 15-009-26256 | Larson Engineering, INC | Trapp | 3429 | 2019 | — |
| Nancy 5-17 API 15-009-26163-0001 | Shelby Resources LLC | Trapp | 3540 | 2019 | — |
| Morgenstern 1-12 API 15-009-25777-0001 | American Oil LLC | Trapp | 3440 | 2018 | — |
| Nancy 5-7 API 15-009-26163 | Shelby Resources LLC | Trapp | 3540 | 2017 | — |
| Woydziak 1-25 API 15-009-26171 | American Oil LLC | Trapp | 3471 | 2017 | — |
| Drake 4-10 API 15-009-26172 | Empire Energy E&p, LLC | Trapp | 3490 | 2017 | — |
| Morgenstern B 1 API 15-009-26174 | Farmer, John O., INC | Trapp | 3410 | 2017 | — |
| Susank B 1-5 API 15-009-26135 | Cmx, INC | Trapp | 3430 | 2016 | — |
| Willson 1 API 15-167-24045 | Rjm Company | Trapp | 3420 | 2016 | — |
| Susank B Swdw 1-5 API 15-009-05015-0001 | Cmx, INC | Trapp | 3630 | 2016 | — |
| Susank B 2-5 API 15-009-23454-0100 | Cmx, INC | Trapp | 3430 | 2016 | — |
| Ludwig A 1-32 API 15-009-26017 | Trans Pacific Oil Corp | Trapp | 3389 | 2015 | — |
| Addington 'a' 4-14 API 15-167-23994 | Russell Oil, INC | Trapp | 3603 | 2015 | — |
| Brian 1-6 API 15-009-26022 | Yale Oil Association, INC | Trapp | 3356 | 2015 | — |
| Hoffman B #6 Owwo API 15-009-05013-0001 | Darrah, John Jay, Jr | Trapp | 3713 | 2015 | — |
| F. A. Krug 5 API 15-167-24020 | Mai Oil Operations, INC | Trapp | 3408 | 2015 | — |
| Morgenstern 1 API 15-009-26102 | John O. Farmer, INC | Trapp | 3440 | 2015 | — |
| H-morgenstern 6 API 15-009-26104 | Mai Oil Operations, INC | Trapp | 3468 | 2015 | — |
| Wilborn 'a' 1 API 15-009-26107 | Mai Oil Operations, INC | Trapp | 3475 | 2015 | — |
| Maag 'p' 5 API 15-167-24036 | Mai Oil Operations, INC | Trapp | 3367 | 2015 | — |
| Mai-krug 'l' 1 API 15-167-24038 | Mai Oil Operations, INC | Trapp | 3402 | 2015 | — |
| Bernard 2-31 API 15-167-23855-0001 | Yale Oil Association, INC | Trapp | 3425 | 2014 | — |
| Gage 1 API 15-167-23930 | John O. Farmer, INC | Trapp | 3400 | 2014 | — |
| Concept Commercial 1 API 15-167-23934 | Rjm Company | Trapp | 3350 | 2014 | — |
| Bogacz Smith 1-30 API 15-167-23935 | Yale Oil Association, INC | Trapp | 3272 | 2014 | — |
| Bender Trust 2 API 15-167-23936 | Mai Oil Operations, INC | Trapp | 3402 | 2014 | — |
| Kramer 'a' 8 API 15-167-23942 | Mai Oil Operations, INC | Trapp | 3396 | 2014 | — |
| Denise 2-28 API 15-009-25945 | Daystar Petroleum, INC | Trapp | 3483 | 2014 | — |
| Krug 'l' 2 API 15-167-23944 | Mai Oil Operations, INC | Trapp | 3299 | 2014 | — |
| Schmidt 8 API 15-167-23945 | Craig Oil Company | Trapp | 3425 | 2014 | — |
| Kramer 'a' 9 API 15-167-23947 | Mai Oil Operations, INC | Trapp | 3400 | 2014 | — |
| Cave 1 API 15-167-23950 | Mai Oil Operations, INC | Trapp | 3650 | 2014 | — |
| Bitter 2 API 15-009-25958 | Prospect Oil & Gas Corp | Trapp | 3440 | 2014 | — |
| Grasmick 1 API 15-167-23962 | Rjm Company | Trapp | 3325 | 2014 | — |
| Addington 'a' 3-14 API 15-167-23963 | Russell Oil, INC | Trapp | 3400 | 2014 | — |
| Nancy 3-17 API 15-009-25969 | Shelby Resources LLC | Trapp | 3525 | 2014 | — |
| Kramer 'a' 10 API 15-167-23971 | Mai Oil Operations, INC | Trapp | 3401 | 2014 | — |
| Weeks Trust 6 API 15-167-23973 | Mai Oil Operations, INC | Trapp | 3332 | 2014 | — |
| Bernard 3-31 API 15-167-23979 | Yale Oil Association, INC | Trapp | 3342 | 2014 | — |
| Wayne Krug 1 API 15-167-23986 | Mai Oil Operations, INC | Trapp | 3298 | 2014 | — |
| Deines 4 Swd API 15-167-23993 | Aleo Oil Company | Trapp | 3294 | 2014 | — |
| Berry 5 API 15-167-23995 | Mai Oil Operations, INC | Trapp | 3414 | 2014 | — |
| Dean 1 API 15-167-23998 | Rjm Company | Trapp | 3323 | 2014 | — |
| Mighell-weeks Trust Unit 1 API 15-167-24000 | Mai Oil Operations, INC | Trapp | 3371 | 2014 | — |
| Drake 4-9 API 15-009-26027 | Empire Energy E&p, LLC | Trapp | 3541 | 2014 | — |
| Jmr 3 API 15-009-26031 | C G Oil, INC | Trapp | 3525 | 2014 | — |
| Sellens 4 API 15-167-24002 | Mai Oil Operations, INC | Trapp | 3402 | 2014 | — |
| G.d. Maier 10 API 15-167-24004 | Mai Oil Operations, INC | Trapp | 3312 | 2014 | — |
| Jmr 2 API 15-009-30395-0001 | C G Oil, INC | Trapp | 3691 | 2014 | — |
| Krug 11 API 15-167-23842 | Bear Petroleum, LLC | Trapp | 3365 | 2013 | — |
| Rexroat 'b' 1 API 15-009-25798 | Rice Production Company | Trapp | 3315 | 2013 | — |
| Bim Lease 1 API 15-009-25799 | C G Oil, LLC | Trapp | 3476 | 2013 | — |
| Bangert 5 API 15-167-23851 | Mai Oil Operations, INC | Trapp | 3226 | 2013 | — |
| Kramer 'a' 5 API 15-167-23852 | Mai Oil Operations, INC | Trapp | 3429 | 2013 | — |
| Tittel 'e' 9 API 15-167-23863 | Jason Oil Company, LLC | Trapp | 3400 | 2013 | — |
| Flegler 3 API 15-167-23864 | Mai Oil Operations, INC | Trapp | 3299 | 2013 | — |
| Schoenberger 2-17 API 15-167-23865 | Jason Oil Company, LLC | Trapp | 3300 | 2013 | — |
| Nuss-radke Unit 2 API 15-167-23869 | Mai Oil Operations, INC | Trapp | 3409 | 2013 | — |
| Kramer Unit 1 API 15-167-23872 | Mai Oil Operations, INC | Trapp | 3386 | 2013 | — |
| Kramer 'a' 6 API 15-167-23876 | Mai Oil Operations, INC | Trapp | 3410 | 2013 | — |
| Boomhower 1 API 15-167-23883 | Rjm Company | Trapp | 3333 | 2013 | — |
| Kramer 'a' 7 API 15-167-23892 | Mai Oil Operations, INC | Trapp | 3410 | 2013 | — |
| Marguerite 4 API 15-167-23899 | Morris Oil Operations | Trapp | 3350 | 2013 | — |
| Bernard 1-31 API 15-167-23903 | Yale Oil Association, INC | Trapp | 3315 | 2013 | — |
| Morgenstern 5 API 15-009-25875 | Hupfer Operating, INC | Trapp | 3395 | 2013 | — |
| Krug 'b' 3 API 15-167-23911 | John H. Shaida | Trapp | 3390 | 2013 | — |
| Flegler 'c' 4 API 15-167-23914 | Mai Oil Operations, INC | Trapp | 3382 | 2013 | — |
| Bender Trust 1 API 15-167-23918 | Mai Oil Operations, INC | Trapp | 3399 | 2013 | — |
| H.j. Mai 6 API 15-167-23925 | Craig Oil Company | Trapp | 3411 | 2013 | — |
| Putman 3 API 15-009-24330-0002 | Te-pe Oil and Gas | Trapp | 3465 | 2013 | — |
| H.j. Mai 4 API 15-167-23755 | Craig Oil Company | Trapp | 3420 | 2012 | — |
| Mjr 2 API 15-009-25667 | C G Oil, LLC | Trapp | 3450 | 2012 | — |
| Dietz 3 API 15-009-25672 | Mai Oil Operations, INC | Trapp | 3469 | 2012 | — |
| Stoskopf 4-28 API 15-009-25692 | Herman L. Loeb, LLC | Trapp | 3500 | 2012 | — |
| Beetz 'a' 3-28 API 15-009-25694 | Herman L. Loeb, LLC | Trapp | 3395 | 2012 | — |
| Dietz 4 API 15-009-25695 | Mai Oil Operations, INC | Trapp | 3460 | 2012 | — |
| Holland 2 API 15-009-25710 | Mai Oil Operations, INC | Trapp | 3460 | 2012 | — |
| Bitter B 1 API 15-009-21227-0002 | Hupfer Operating | Trapp | 3607 | 2012 | — |
Fields of a comparable size
- Unknown 75,314
- Wildcat 36,703
- Hugoton Gas Area 9,178
- Paola-rantoul 7,078
- Chase-silica 5,384
- Cherokee Basin Coal Area 4,938
- Unnamed 4,310
- Hall-gurney 3,287
- Humboldt-chanute 3,280
- Panoma Gas Area 3,007
- Bemis-shutts 2,815
- Kraft-prusa 2,239
- Gorham 2,178
- Spivey-grabs-basil 2,172
- Peru-sedan 2,058
Neighbours by the number of wells, not a ranking: the list slides with the field, so every one of the 109 field pages is reachable from the others. All of them.