The largest oil and gas operators active in Mississippi — ranked by total well count, with producing-well counts for each. Click any operator to see their full profile.
Buckhead Energy analysis of public oil and gas data. Refreshed daily. Data current as of 2026-11-01.
Quick answer: By wells operated, Denbury Onshore is the largest oil and gas operator in Mississippi with 2,159 wells on record, followed by Tellus Operating Group (789) and Southern Community (784). Ranked from Buckhead Energy analysis of public oil and gas data (as of 2026-11-01). This is an operated-well-count ranking, not a revenue or market-cap ranking.
As of 2026-11-01, the largest operator by wells on record in Mississippi is Denbury Onshore with 2,159 wells on record, across the top 100 ranked operators, per Buckhead Energy analysis of public oil and gas data.
| # | Operator | Wells | Producing | Top Formation | Top County |
|---|---|---|---|---|---|
| 1 | Denbury Onshore | 2,159 | 1,572 | Mid-Gulf Coast Basin | Jasper |
| 2 | Tellus Operating Group | 789 | 585 | Mid-Gulf Coast Basin | Lamar |
| 3 | Southern Community | 784 | 603 | Mid-Gulf Coast Basin | Jefferson Davis |
| 4 | Humble Oil And Refining Company | 507 | 32 | Austin Chalk | Adams |
| 5 | Highmark Energy Operating | 470 | 303 | Mid-Gulf Coast Basin | Yazoo |
| 6 | Ms Oil & Gas Board | 447 | 443 | — | Well Cumulatives |
| 7 | Callon Petroleum Company | 432 | 32 | Austin Chalk | Adams |
| 8 | Sun Oil Company | 351 | 6 | Austin Chalk | Pike |
| 9 | Pruet Production Company | 342 | 149 | Mid-Gulf Coast Basin | Monroe |
| 10 | Venture Oil & Gas | 329 | 218 | Mid-Gulf Coast Basin | Jones |
| 11 | Formentera Operations LLC | 307 | 272 | Mid-Gulf Coast Basin | Jones |
| 12 | Petrotx Operating LLC | 291 | 288 | Austin Chalk | Lamar |
| 13 | Hughes & New Oil Company | 274 | 4 | Austin Chalk | Adams |
| 14 | Encana Oil & Gas | 263 | 0 | Austin Chalk | Amite |
| 15 | Gulf Oil | 250 | 28 | Mid-Gulf Coast Basin | Lamar |
| 16 | D A Biglane Operating Company | 235 | 17 | Austin Chalk | Adams |
| 17 | Shell Oil Company | 231 | 17 | Mid-Gulf Coast Basin | Rankin |
| 18 | Chevron | 214 | 40 | Mid-Gulf Coast Basin | Adams |
| 19 | Germanygulmon | 213 | <3 | Austin Chalk | Wilkinson |
| 20 | Moon Hines Tigrett Op Company | 209 | 64 | Mid-Gulf Coast Basin | Monroe |
| 21 | Pan American Petroleum | 208 | 0 | Austin Chalk | Franklin |
| 22 | Black Jack Oil | 194 | 142 | Austin Chalk | Adams |
| 23 | Eog Resources | 191 | 48 | Mid-Gulf Coast Basin | Jefferson Davis |
| 24 | Pistol Ridge Partnersllc | 188 | 166 | Mid-Gulf Coast Basin | Madison |
| 25 | Larco Drilling & Exploration | 188 | 5 | Mid-Gulf Coast Basin | Amite |
| 26 | Mcgowan Working Partners | 173 | 78 | Austin Chalk | Adams |
| 27 | Cities Service Oil Company | 173 | 5 | Austin Chalk | Wilkinson |
| 28 | Gulf Refining Company | 172 | 5 | Mid-Gulf Coast Basin | Wilkinson |
| 29 | Exxon Mobil | 170 | 44 | Mid-Gulf Coast Basin | Marion |
| 30 | Gibraltar Energy Company | 169 | 53 | Floyd-Neal | Monroe |
| 31 | Secan Oil | 167 | 7 | Austin Chalk | Adams |
| 32 | Australis Tms | 165 | 0 | Mid-Gulf Coast Basin | Amite |
| 33 | Spooner Petroleum Company | 163 | 39 | Mid-Gulf Coast Basin | Forrest |
| 34 | Penn Virginia Oil & Gas | 155 | 6 | Mid-Gulf Coast Basin | Lamar |
| 35 | Seriopunches Oil Company | 155 | 3 | Austin Chalk | Adams |
| 36 | Scorpion Oil & Gas | 148 | 135 | Mid-Gulf Coast Basin | Clarke |
| 37 | Adco Producing Company | 147 | 15 | Austin Chalk | Adams |
| 38 | Roundtree & Assoc | 141 | 55 | Mid-Gulf Coast Basin | Jefferson Davis |
| 39 | Meason Operating Company | 138 | 38 | Austin Chalk | Adams |
| 40 | Griffin & Griffin Exploration | 138 | 60 | Austin Chalk | Wilkinson |
| 41 | Amoco Production Company | 137 | 31 | Austin Chalk | Franklin |
| 42 | Radzewicz Operating | 133 | 64 | Austin Chalk | Adams |
| 43 | Furrh | 132 | 7 | Austin Chalk | Adams |
| 44 | Pennzoil Production Company | 132 | 42 | Mid-Gulf Coast Basin | Yazoo |
| 45 | Jett Drilling Company | 125 | <3 | Austin Chalk | Adams |
| 46 | Big Joe Oil Company | 123 | 0 | Austin Chalk | Adams |
| 47 | Lyle Cashion Company | 121 | 4 | Mid-Gulf Coast Basin | Jefferson |
| 48 | Barnettserio | 119 | 0 | Austin Chalk | Adams |
| 49 | Wilcox Energy Company | 117 | 42 | Austin Chalk | Adams |
| 50 | El Toro Oil Company | 116 | 0 | Austin Chalk | Adams |
| 51 | J R Pounds | 114 | 74 | Mid-Gulf Coast Basin | Hinds |
| 52 | Mosbacher Energy Company | 105 | 59 | Mid-Gulf Coast Basin | Covington |
| 53 | Triad Oil & Gas | 102 | 16 | Mid-Gulf Coast Basin | Smith |
| 54 | Cardneaux | 100 | 19 | Austin Chalk | Adams |
| 55 | California Company | 96 | 0 | Mid-Gulf Coast Basin | Adams |
| 56 | Hayes & Assoc | 95 | 18 | Austin Chalk | Franklin |
| 57 | Amerada Hess | 94 | 15 | Mid-Gulf Coast Basin | Wayne |
| 58 | Marshall Young Oil Company | 91 | 17 | Austin Chalk | Lincoln |
| 59 | Kfg Petroleum | 90 | 19 | Austin Chalk | Adams |
| 60 | Placid Oil Company | 89 | 6 | Mid-Gulf Coast Basin | Clarke |
| 61 | Texaco | 87 | 5 | Mid-Gulf Coast Basin | Walthall |
| 62 | Laruesmith Production Company | 86 | 0 | Mid-Gulf Coast Basin | Franklin |
| 63 | Getty Oil Company | 85 | 9 | Mid-Gulf Coast Basin | Clarke |
| 64 | John S Callon | 85 | <3 | Austin Chalk | Adams |
| 65 | Central Oil Company | 85 | 0 | Mid-Gulf Coast Basin | Smith |
| 66 | Texas Petroleum Investment Company | 85 | 77 | Mid-Gulf Coast Basin | Lamar |
| 67 | Dallas Production | 84 | 65 | Floyd-Neal | Monroe |
| 68 | James B Furrh Jr | 84 | <3 | Austin Chalk | Wilkinson |
| 69 | El Toro Production | 82 | 20 | Austin Chalk | Adams |
| 70 | Hf Sinclair Corporation | 81 | 0 | Mid-Gulf Coast Basin | Yazoo |
| 71 | Coho Resources | 81 | 12 | Mid-Gulf Coast Basin | Lincoln |
| 72 | Burnsed Oil | 80 | 56 | Austin Chalk | Adams |
| 73 | Txo Production | 80 | 9 | Austin Chalk | Monroe |
| 74 | Halcon Resources | 79 | 0 | Austin Chalk | Wilkinson |
| 75 | Transcontinental Oil | 78 | 6 | Mid-Gulf Coast Basin | Covington |
| 76 | Plateau Oil & Gas Company | 77 | all but <3 | Austin Chalk | Marion |
| 77 | Carter Oil Company | 76 | 0 | Mid-Gulf Coast Basin | Madison |
| 78 | Bob Bertolet | 76 | 4 | Austin Chalk | Adams |
| 79 | David New Operating | 76 | 38 | Austin Chalk | Adams |
| 80 | Southeastern Resources | 75 | 5 | Mid-Gulf Coast Basin | Wayne |
| 81 | Sohio Petroleum Company | 75 | 0 | Austin Chalk | Adams |
| 82 | Magnolia Petroleum Company | 74 | 0 | Austin Chalk | Adams |
| 83 | Sunnylandntracting | 73 | 0 | Austin Chalk | Adams |
| 84 | Marlin Exploration | 73 | 10 | Austin Chalk | Adams |
| 85 | United Gas Pipeline Company | 71 | 0 | Mid-Gulf Coast Basin | Rankin |
| 86 | Union Producing Company | 71 | <3 | Mid-Gulf Coast Basin | Yazoo |
| 87 | Oxy | 71 | 39 | Austin Chalk | Wilkinson |
| 88 | R W Tyson Producing | 71 | 46 | Mid-Gulf Coast Basin | Jones |
| 89 | Inexco Oil Company | 70 | 11 | Mid-Gulf Coast Basin | Lawrence |
| 90 | Echols & Assoc | 70 | <3 | Austin Chalk | Wilkinson |
| 91 | Continental Oil Company | 69 | <3 | Mid-Gulf Coast Basin | Yalobusha |
| 92 | Smith Victor P | 69 | <3 | Austin Chalk | Franklin |
| 93 | Louisiana Land & Exploration Company | 68 | 4 | Mid-Gulf Coast Basin | Monroe |
| 94 | Moonhines | 67 | <3 | Austin Chalk | Monroe |
| 95 | Love Petrl Company | 67 | 0 | Mid-Gulf Coast Basin | Rankin |
| 96 | Victor P Smith | 65 | 0 | Mid-Gulf Coast Basin | Franklin |
| 97 | Denbury Resources | 65 | 19 | Mid-Gulf Coast Basin | Jasper |
| 98 | Willdrill Production | 64 | 38 | Mid-Gulf Coast Basin | Jefferson Davis |
| 99 | Liberty Operating | 64 | all but <3 | Mid-Gulf Coast Basin | Jones |
| 100 | Skye Ms LLC | 63 | 63 | Mid-Gulf Coast Basin | Forrest |
Source: Buckhead Energy analysis of public oil and gas data.
Ranking: Operators ranked by total well count under their current operator-of-record. Producing-well count is wells with a first-production date on file. Drilling activity (permits, spuds, DUCs) is published only as state and county counts, never attributed to an operator.
Why it matters: Knowing who operates the most wells in Mississippi helps mineral owners understand who they're dealing with at the lease level.
Refresh cadence: Daily. Data current as of 2026-11-01.
By wells operated, Denbury Onshore is the largest oil and gas operator in Mississippi, with 2,159 wells on record per Buckhead Energy analysis of public oil and gas data. Note that "biggest" by revenue or market capitalization can rank differently — this measures operated well count.
The top 10 operators by operated well count are: Denbury Onshore, Tellus Operating Group, Southern Community, Humble Oil And Refining Company, Highmark Energy Operating, Ms Oil & Gas Board, Callon Petroleum Company, Sun Oil Company, Pruet Production Company, Venture Oil & Gas. The full top-100 ranking with well and producing-well counts is in the leaderboard below.
Denbury Onshore operates the most wells in Mississippi at 2,159, per Buckhead Energy analysis of public oil and gas data.
This leaderboard ranks the top 100 operators active in Mississippi by total well count. Many more file with the regulator; these are the largest by operated wells.
By wells operated — the count of wells under each company's current operator-of-record designation in the public oil and gas data Buckhead Energy analyzes. It is not a revenue, production-volume, or market-capitalization ranking.
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Get Your Free Written OfferState: Mississippi
Operators ranked: 100
Total wells: 17,673
Last refresh: 2026-11-01
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