The Iola field
1,358 wells — 0.3% of the Kansas register.
What stands out in the Iola field
The operator named on most of these records is Colt Energy INC, on 340 of them (25.0%), ahead of M.a.e. Resources, INC (98) and Thompson, Jerome A. Dba Thompson Oil CO (88). The oldest well here was completed in 1915 and the most recent in 2026, and the deepest reaches 1872 feet — Cross Swd-1, drilled in 2025.
| Measurement | Median | 90th percentile | Kansas median |
|---|---|---|---|
| Total depth | 954 ft | 1075 ft | 2831 ft — shallower here |
What happened to these wells — in the Iola field
239 of the 1,358 wells in the Iola field are classed as plugged and abandoned. 0 were plugged at the State’s expense because no responsible party could be found, and 32 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, 232 of these wells have a date on file. What each class means.
Producing formations
| Formation | Wells | Share |
|---|---|---|
| Bartlesville | 580 | 42.7% |
| Tucker | 189 | 13.9% |
| Squirrel | 124 | 9.1% |
| Arbuckle | 26 | 1.9% |
| Mississippian | 17 | 1.3% |
| Mississippi | 15 | 1.1% |
| Riverton | 8 | 0.6% |
| Cherokee Coals | 5 | 0.4% |
| Wayside | 4 | 0.3% |
| Bartlesville Lower | 3 | 0.2% |
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 |
|---|---|---|
| Colt Energy INC | 340 | 25.0% |
| M.a.e. Resources, INC | 98 | 7.2% |
| Thompson, Jerome A. Dba Thompson Oil CO | 88 | 6.5% |
| N & B Enterprises | 53 | 3.9% |
| E K Energy LLC | 42 | 3.1% |
| N & B Enterprises, INC | 37 | 2.7% |
| Mcfadden Oil CO | 37 | 2.7% |
| Vast Petroleum Corporation | 20 | 1.5% |
| Michael Drilling LLC | 19 | 1.4% |
| Laymon Oil Ii, LLC | 18 | 1.3% |
| Royal O&g | 17 | 1.3% |
| Ensminger / Kimzey | 16 | 1.2% |
| Haas Petroleum, LLC | 16 | 1.2% |
| Roxanna Pipeline, INC | 15 | 1.1% |
An old well on land in Kansas?
0 wells in Kansas were plugged at the State’s expense, out of 1,358 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 |
|---|---|---|---|---|---|
| Sutherland D-2 API 15-001-31920 | Mcfadden Oil CO | Iola | 1806 | 2026 | — |
| Kirk 67 API 15-001-31960 | Colt Energy INC | Iola | 1027 | 2026 | — |
| Sutherland Farms 1 API 15-001-31965 | Colt Energy INC | Iola | 993 | 2026 | — |
| Sutherland Farms 2 API 15-001-31966 | Colt Energy INC | Iola | 1026 | 2026 | — |
| Sutherland 7 API 15-001-31971 | Colt Energy INC | Iola | 1024 | 2026 | — |
| Sutherland 6 API 15-001-31972 | Colt Energy INC | Iola | 980 | 2026 | — |
| Sutherland 8 API 15-001-31973 | Colt Energy INC | Iola | 982 | 2026 | — |
| Sutherland 9 API 15-001-31974 | Colt Energy INC | Iola | 955 | 2026 | — |
| Latta 39 API 15-001-31975 | Colt Energy INC | Iola | 1045 | 2026 | — |
| Latta 40 API 15-001-31976 | Colt Energy INC | Iola | 1028 | 2026 | — |
| Latta 41 API 15-001-31977 | Colt Energy INC | Iola | 1019 | 2026 | — |
| South Brown 4 API 15-001-31979 | Colt Energy INC | Iola | 990 | 2026 | — |
| South Brown 3 API 15-001-31980 | Colt Energy INC | Iola | 990 | 2026 | — |
| South Brown 2 API 15-001-31981 | Colt Energy INC | Iola | 984 | 2026 | — |
| North Brown 10 API 15-001-31982 | Colt Energy INC | Iola | 998 | 2026 | — |
| Kirk 68 API 15-001-31983 | Colt Energy INC | Iola | 1036 | 2026 | — |
| Kirk 69 API 15-001-31984 | Colt Energy INC | Iola | 1025 | 2026 | — |
| Kirk 70 API 15-001-31985 | Colt Energy INC | Iola | 1047 | 2026 | — |
| Charlotte Hobbs 124 API 15-001-31990 | Colt Energy INC | Iola | 1030 | 2026 | — |
| Charlotte Hobbs 125 API 15-001-31991 | Colt Energy INC | Iola | 1054 | 2026 | — |
| Charlotte Hobbs 126 API 15-001-31992 | Colt Energy INC | Iola | 1056 | 2026 | — |
| Charlotte Hobbs 127 API 15-001-31993 | Colt Energy INC | Iola | 1040 | 2026 | — |
| Charlotte Hobbs 128 API 15-001-31994 | Colt Energy INC | Iola | 1040 | 2026 | — |
| Charlotte Hobbs 129 API 15-001-31995 | Colt Energy INC | Iola | 1055 | 2026 | — |
| Sutherland Farms 7 API 15-001-31998 | Colt Energy INC | Iola | 995 | 2026 | — |
| Sutherland Farms 4 API 15-001-31996 | Colt Energy INC | Iola | 995 | 2026 | — |
| Sutherland Farms 3 API 15-001-31997 | Colt Energy INC | Iola | 995 | 2026 | — |
| Sutherland Farms 6 API 15-001-32000 | Colt Energy INC | Iola | 999 | 2026 | — |
| Sutherland Farms 5 API 15-001-32001 | Colt Energy INC | Iola | 980 | 2026 | — |
| Sutherland 10 API 15-001-32002 | Colt Energy INC | Iola | 995 | 2026 | — |
| Sutherland 11 API 15-001-32004 | Colt Energy INC | Iola | 990 | 2026 | — |
| Kirk 61 API 15-001-31899 | Colt Energy INC | Iola | 1036 | 2025 | — |
| Kirk 60 API 15-001-31900 | Colt Energy INC | Iola | 1035 | 2025 | — |
| Kirk 59 API 15-001-31901 | Colt Energy INC | Iola | 1057 | 2025 | — |
| Kirk 58 API 15-001-31902 | Colt Energy INC | Iola | 1040 | 2025 | — |
| Kirk 62 API 15-001-31903 | Colt Energy INC | Iola | 1060 | 2025 | — |
| Cross 1 API 15-001-31904 | Colt Energy INC | Iola | 1106 | 2025 | — |
| Cross 2 API 15-001-31905 | Colt Energy INC | Iola | 995 | 2025 | — |
| Cross 3 API 15-001-31906 | Colt Energy INC | Iola | 1005 | 2025 | — |
| Cross 4 API 15-001-31907 | Colt Energy INC | Iola | 1000 | 2025 | — |
| Specht 7 API 15-001-31908 | Mcfadden, Jack W. Dba Mcfadden Oil CO | Iola | 1115 | 2025 | — |
| North Brown 4 API 15-001-31909 | Colt Energy INC | Iola | 975 | 2025 | — |
| North Brown 5 API 15-001-31910 | Colt Energy INC | Iola | 971 | 2025 | — |
| North Brown 3 API 15-001-31912 | Colt Energy INC | Iola | 992 | 2025 | — |
| North Brown 2 API 15-001-31913 | Colt Energy INC | Iola | 991 | 2025 | — |
| Latta 33 API 15-001-31914 | Colt Energy INC | Iola | 1060 | 2025 | — |
| Latta 34 API 15-001-31915 | Colt Energy INC | Iola | 1040 | 2025 | — |
| Latta 32 API 15-001-31916 | Colt Energy INC | Iola | 1050 | 2025 | — |
| Baker 31 API 15-001-31917 | Colt Energy INC | Iola | 1060 | 2025 | — |
| Charlotte Hobbs Swd-1 API 15-001-31919 | Colt Energy INC | Iola | 1806 | 2025 | — |
| Charlotte Hobbs 109 API 15-001-31921 | Colt Energy INC | Iola | 1050 | 2025 | — |
| Charlotte Hobbs 110 API 15-001-31922 | Colt Energy INC | Iola | 1080 | 2025 | — |
| Charlotte Hobbs 111 API 15-001-31923 | Colt Energy INC | Iola | 1050 | 2025 | — |
| Charlotte Hobbs 112 API 15-001-31924 | Colt Energy INC | Iola | 1075 | 2025 | — |
| Charlotte Hobbs 113 API 15-001-31925 | Colt Energy INC | Iola | 1040 | 2025 | — |
| Charlotte Hobbs 107 API 15-001-31927 | Colt Energy INC | Iola | 1030 | 2025 | — |
| Charlotte Hobbs 108 API 15-001-31928 | Colt Energy INC | Iola | 1060 | 2025 | — |
| Baker 33 API 15-001-31929 | Colt Energy INC | Iola | 1075 | 2025 | — |
| Baker 34 API 15-001-31931 | Colt Energy INC | Iola | 1033 | 2025 | — |
| Baker 35 API 15-001-31932 | Colt Energy INC | Iola | 1045 | 2025 | — |
| Baker 36 API 15-001-31933 | Colt Energy INC | Iola | 1075 | 2025 | — |
| Baker 37 API 15-001-31934 | Colt Energy INC | Iola | 1045 | 2025 | — |
| Baker 38 API 15-001-31935 | Colt Energy INC | Iola | 1050 | 2025 | — |
| Charlotte Hobbs 119 API 15-001-31938 | Colt Energy INC | Iola | 1065 | 2025 | — |
| Charlotte Hobbs 118 API 15-001-31939 | Colt Energy INC | Iola | 1075 | 2025 | — |
| Charlotte Hobbs 114 API 15-001-31940 | Colt Energy INC | Iola | 1040 | 2025 | — |
| Charlotte Hobbs 115 API 15-001-31943 | Colt Energy INC | Iola | 1045 | 2025 | — |
| Charlotte Hobbs 117 API 15-001-31942 | Colt Energy INC | Iola | 1035 | 2025 | — |
| Charlotte Hobbs 116 API 15-001-31941 | Colt Energy INC | Iola | 1050 | 2025 | — |
| Latta 37 API 15-001-31944 | Colt Energy INC | Iola | 1050 | 2025 | — |
| Latta 36 API 15-001-31945 | Colt Energy INC | Iola | 1023 | 2025 | — |
| Latta 35 API 15-001-31946 | Colt Energy INC | Iola | 1031 | 2025 | — |
| Latta 38 API 15-001-31947 | Colt Energy INC | Iola | 1023 | 2025 | — |
| North Brown 6 API 15-001-31950 | Colt Energy INC | Iola | 963 | 2025 | — |
| North Brown 7 API 15-001-31951 | Colt Energy INC | Iola | 975 | 2025 | — |
| North Brown 9 API 15-001-31952 | Colt Energy INC | Iola | 963 | 2025 | — |
| North Brown 8 API 15-001-31953 | Colt Energy INC | Iola | 935 | 2025 | — |
| Lueker 2 API 15-001-31954 | Colt Energy INC | Iola | 961 | 2025 | — |
| Lueker 3 API 15-001-31955 | Colt Energy INC | Iola | 994 | 2025 | — |
| Kirk 63 API 15-001-31956 | Colt Energy INC | Iola | 1024 | 2025 | — |
| Kirk 64 API 15-001-31957 | Colt Energy INC | Iola | 1017 | 2025 | — |
| Kirk 65 API 15-001-31958 | Colt Energy INC | Iola | 1054 | 2025 | — |
| Kirk 66 API 15-001-31959 | Colt Energy INC | Iola | 1025 | 2025 | — |
| Cross 5 API 15-001-31961 | Colt Energy INC | Iola | 980 | 2025 | — |
| Cross 6 API 15-001-31962 | Colt Energy INC | Iola | 981 | 2025 | — |
| Cross 7 API 15-001-31963 | Colt Energy INC | Iola | 1008 | 2025 | — |
| Cross Swd-1 API 15-001-31964 | Colt Energy INC | Iola | 1872 | 2025 | — |
| Charlotte Hobbs 120 API 15-001-31967 | Colt Energy INC | Iola | 1046 | 2025 | — |
| Charlotte Hobbs 121 API 15-001-31968 | Colt Energy INC | Iola | 1045 | 2025 | — |
| Charlotte Hobbs 122 API 15-001-31969 | Colt Energy INC | Iola | 1046 | 2025 | — |
| Charlotte Hobbs 123 API 15-001-31970 | Colt Energy INC | Iola | 1064 | 2025 | — |
| Sutherland 19 API 15-001-31978 | Mcfadden Oil CO | Iola | 925 | 2025 | — |
| Charlotte Hobbs 65 API 15-001-31785 | Colt Energy INC | Iola | 1050 | 2024 | — |
| Charlotte Hobbs 66 API 15-001-31786 | Colt Energy INC | Iola | 1057 | 2024 | — |
| Johnson, D 35 API 15-001-31791 | Colt Energy INC | Iola | 978 | 2024 | — |
| Johnson, D 36 API 15-001-31792 | Colt Energy INC | Iola | 1020 | 2024 | — |
| Johnson, D 34 API 15-001-31793 | Colt Energy INC | Iola | 1020 | 2024 | — |
| Johnson, D 37 API 15-001-31795 | Colt Energy INC | Iola | 1025 | 2024 | — |
| Knoble 13 API 15-001-31798 | Colt Energy INC | Iola | 1050 | 2024 | — |
| Knoble 14 API 15-001-31799 | Colt Energy INC | Iola | 1040 | 2024 | — |
| Knoble 16 API 15-001-31800 | Colt Energy INC | Iola | 1030 | 2024 | — |
| Knoble 15 API 15-001-31801 | Colt Energy INC | Iola | 1034 | 2024 | — |
| Cline 57 API 15-001-31804 | Colt Energy INC | Iola | 1000 | 2024 | — |
| Cline 59 API 15-001-31805 | Colt Energy INC | Iola | 995 | 2024 | — |
| Cline 58 API 15-001-31806 | Colt Energy INC | Iola | 985 | 2024 | — |
| Cline 62 API 15-001-31808 | Colt Energy INC | Iola | 980 | 2024 | — |
| Cline 61 API 15-001-31809 | Colt Energy INC | Iola | 964 | 2024 | — |
| Baker 27 API 15-001-31814 | Colt Energy INC | Iola | 1065 | 2024 | — |
| Baker 23 API 15-001-31810 | Colt Energy INC | Iola | 1065 | 2024 | — |
| Baker 24 API 15-001-31811 | Colt Energy INC | Iola | 1065 | 2024 | — |
| Baker 25 API 15-001-31812 | Colt Energy INC | Iola | 1035 | 2024 | — |
| Baker 26 API 15-001-31813 | Colt Energy INC | Iola | 1075 | 2024 | — |
| Hobbs 71 API 15-001-31820 | Colt Energy INC | Iola | 1040 | 2024 | — |
| Latta 24 API 15-001-31815 | Colt Energy INC | Iola | 1035 | 2024 | — |
| Latta 22 API 15-001-31816 | Colt Energy INC | Iola | 1046 | 2024 | — |
| Latta 23 API 15-001-31817 | Colt Energy INC | Iola | 1035 | 2024 | — |
| Hobbs 73 API 15-001-31818 | Colt Energy INC | Iola | 1056 | 2024 | — |
| Hobbs 72 API 15-001-31819 | Colt Energy INC | Iola | 1045 | 2024 | — |
| Sutherland 15-x API 15-001-31821 | Mcfadden Oil CO | Iola | 912 | 2024 | — |
| Charlotte Hobbs 77 API 15-001-31827 | Colt Energy INC | Iola | 1035 | 2024 | — |
| Charlotte Hobbs 74 API 15-001-31824 | Colt Energy INC | Iola | 1025 | 2024 | — |
| Charlotte Hobbs 75 API 15-001-31825 | Colt Energy INC | Iola | 1065 | 2024 | — |
| Charlotte Hobbs 76 API 15-001-31826 | Colt Energy INC | Iola | 1056 | 2024 | — |
| Charlotte Hobbs 79 API 15-001-31828 | Colt Energy INC | Iola | 1052 | 2024 | — |
| Charlotte Hobbs 80 API 15-001-31829 | Colt Energy INC | Iola | 1038 | 2024 | — |
| Charlotte Hobbs 81 API 15-001-31830 | Colt Energy INC | Iola | 1077 | 2024 | — |
| Charlotte Hobbs 78 API 15-001-31831 | Colt Energy INC | Iola | 1060 | 2024 | — |
| Kirk 50 API 15-001-31837 | Colt Energy INC | Iola | 1055 | 2024 | — |
| Kirk 51 API 15-001-31838 | Colt Energy INC | Iola | 1055 | 2024 | — |
| Kirk 52 API 15-001-31839 | Colt Energy INC | Iola | 1043 | 2024 | — |
| Kirk 53 API 15-001-31840 | Colt Energy INC | Iola | 1032 | 2024 | — |
| Kirk 54 API 15-001-31841 | Colt Energy INC | Iola | 1042 | 2024 | — |
| Knoble 17 API 15-001-31842 | Colt Energy INC | Iola | 1020 | 2024 | — |
| Knoble 18 API 15-001-31843 | Colt Energy INC | Iola | 1042 | 2024 | — |
| Knoble 19 API 15-001-31844 | Colt Energy INC | Iola | 1045 | 2024 | — |
| Knoble 20 API 15-001-31845 | Colt Energy INC | Iola | 1015 | 2024 | — |
| Johnson, D 40 API 15-001-31846 | Colt Energy INC | Iola | 960 | 2024 | — |
| Johnson, D 39 API 15-001-31848 | Colt Energy INC | Iola | 1012 | 2024 | — |
| Charlotte Hobbs 82 API 15-001-31849 | Colt Energy INC | Iola | 1035 | 2024 | — |
| Charlotte Hobbs 83 API 15-001-31850 | Colt Energy INC | Iola | 1045 | 2024 | — |
| Latta 25 API 15-001-31852 | Colt Energy INC | Iola | 1028 | 2024 | — |
| Latta 26 API 15-001-31853 | Colt Energy INC | Iola | 1025 | 2024 | — |
| Latta 27 API 15-001-31854 | Colt Energy INC | Iola | 1025 | 2024 | — |
| Latta 29 API 15-001-31855 | Colt Energy INC | Iola | 1023 | 2024 | — |
| Latta 28 API 15-001-31856 | Colt Energy INC | Iola | 1030 | 2024 | — |
| Baker 28 API 15-001-31859 | Colt Energy INC | Iola | 1060 | 2024 | — |
| Baker 29 API 15-001-31860 | Colt Energy INC | Iola | 1065 | 2024 | — |
| Baker 30 API 15-001-31861 | Colt Energy INC | Iola | 1063 | 2024 | — |
| Charlotte Hobbs 84 API 15-001-31862 | Colt Energy INC | Iola | 1030 | 2024 | — |
| Charlotte Hobbs 85 API 15-001-31863 | Colt Energy INC | Iola | 1032 | 2024 | — |
Fields of a comparable size
- Vernon 1,947
- Neosho Falls-leroy 1,800
- Bush City Shoestring 1,727
- Wayside-havana 1,617
- El Dorado 1,480
- Jefferson-sycamore 1,460
- Neodesha 1,433
- Burrton 1,362
- Hugoton 1,142
- Coffeyville-cherryvale 1,140
- Stoltenberg 1,111
- Lost Springs 1,083
- Marcotte 1,019
- Fairport 1,002
- Colony-welda 949
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.