Stored formation/play groups ranked by recorded well count, with recorded operators and primary counties. Coverage is limited to the groups included below.
Daily refresh scheduled from NMOCD well records. Stored source refresh: 2026-09-16.
Stored source refresh: 2026-09-16. Formation/play groups require at least 25 recorded wells and a known operator; the directory shows at most 50 groups ranked by well count. Operator counts reflect distinct recorded operator names, not verified current operations. Permit counts use the preceding 24 months at summary refresh. Grouping can represent a formation, play or basin; it is not an inventory of every geological formation. This is a capped directory of stored records, not a complete statewide count.
Compiled from New Mexico Oil Conservation Division records through a commercial well-data aggregator. Scheduled refreshes do not guarantee that new regulator filings are available. Use the source records to check a specific well.
Quick answer: The highest well-count groups listed for New Mexico are the Avalon-Bone Spring, Permian Basin, Pictured Clliffs, Morrow and Nw Shelf Perm-Penn Carbonate, led by the Avalon-Bone Spring with 29,827 wells on record. Ranked by well count across 21 tracked formations from New Mexico Oil Conservation Division (NMOCD) well-header records. Stored source refresh: 2026-09-16. These are limited stored records; reporting windows are evaluated at source refresh.
The highest well-count groups listed for New Mexico are the Avalon-Bone Spring, Permian Basin, Pictured Clliffs, Morrow and Nw Shelf Perm-Penn Carbonate, led by the Avalon-Bone Spring with 29,827 wells on record. Ranked by well count across 21 tracked formations from New Mexico Oil Conservation Division (NMOCD) well-header records. Stored source refresh: 2026-09-16. These are limited stored records; reporting windows are evaluated at source refresh.
Top Operators:
Eog Resources (3,585), Devon Energy Production Company (2,548), Oxy (1,770), Cog Operating (1,754), Mewbourne Oil Company (1,566), Xto Energy (1,253), Matador Production Company (1,063), Coterra Energy INC (927), Chevron (695), Riley Permian Operating (602)
Primary counties: Eddy, Lea, Chaves
Top Operators:
Eog Resources (2,214), Devon Energy Production Company (1,546), Mewbourne Oil Company (1,373), Permian Resources Operating LLC (1,169), Matador Production Company (1,053), Xto Energy (983), Coterra Energy INC (965), Oxy (905), Chevron (710), Hilcorp Energy Company (568)
Primary counties: Lea, Eddy, Chaves, Roosevelt, De Baca
Top Operators:
Hilcorp Energy Company (7,984), Simcoe LLC (1,629), Burlington Resources Oil & Gas Company (968), Morning Star Oil Company (573), Conocophillips Company (496), Enduring Resources (469), Bpx Operating Company (447), Logos Operating (434), High River Resources Operating LLC (279), Djr Operating (223)
Primary counties: San Juan, Rio Arriba, Sandoval
Top Operators:
Hilcorp Energy Company (850), Oxy (729), Apache (719), Southwest Royalties (715), Fae Ii Operating LLC (559), Empire New Mexico LLC (539), Eog Resources (537), Chevron (483), Mack Energy (368), Cimarex Energy Company (313)
Primary counties: Lea, Chaves, Eddy, Roosevelt, Otero
Top Operators:
Sep Legacy LLC (1,428), Eog Resources (1,243), Maverick Permian LLC (752), Spur Energy Partners LLC (704), Conocophillips Company (545), Morning Star Oil Company (540), Cog Operating (463), Lh Operating LLC (462), Mack Energy (453), Hilcorp Energy Company (440)
Primary counties: Eddy, Lea, Chaves, Lincoln
Top Operators:
Hilcorp Energy Company (1,124), Dugan Production (1,016), Djr Operating (651), Enduring Resources (482), Logos Operating (271), Epic Energy (238), Morning Star Oil Company (223), Simcoe LLC (216), Dominion Production Company (173), Playa Minerals & Energy (162)
Primary counties: San Juan, Rio Arriba, Mckinley, Sandoval, Valencia
Top Operators:
Hilcorp Energy Company (2,593), Simcoe LLC (550), Logos Operating (485), Bpx Operating Company (341), Burlington Resources Oil & Gas Company (341), Dugan Production (270), Xto Energy (243), Morning Star Oil Company (196), Conocophillips Company (152), Epic Energy (92)
Primary counties: San Juan, Rio Arriba, Sandoval, Mckinley
Top Operators:
Eog Resources (515), Xto Energy (451), Mewbourne Oil Company (344), Devon Energy Production Company (295), Coterra Energy INC (160), Oxy (157), Matador Production Company (153), Chevron (145), Cog Operating (129), Permian Resources Operating LLC (106)
Primary counties: Eddy, Lea, Chaves, Roosevelt
Top Operators:
Eog Resources (446), Iacx Production LLC (401), Solis Partners LLC (400), Desert Mountain Energy CORP (170), Mckay Oil (68), Slayton Resources (62), Hanson Operating (54), M E W Enterprise (50), Llj Ventures LLC Dba Marker Oil & Gas (36), Grizzly Operating (32)
Primary counties: Chaves, Eddy
Top Operators:
Cano Petro Of New Mexico (211), Ridgeway Arizona Oil (193), Canyon E & P Company (84), Eor Operating Company (64), Dwight A Tipton (49), Kratos Operating LLC (44), Mack Energy (44), Blue Sky NM (42), Petrolia Energy (38), Quatro Osos E And P (37)
Primary counties: Chaves, Roosevelt, Lea, Eddy
Top Operators:
Oxy (782), Bpx Operating Company (93), Breitburn Operating (70), Whiting Petroleum CORP (58), Hess (16), Reliant Exploration And Production (8), Co2 (5), Kodiak Petroleum (4), Conley & Associates (4), Beck Producing Company (3)
Primary counties: Harding, Union, Colfax, Eddy
Top Operators:
Oxy (554), Maverick Permian LLC (61), Hilcorp Energy Company (31), Morning Star Oil Company (31), Empire New Mexico LLC (29), Apache (28), Southwest Royalties (21), Rover Operating (15), Conocophillips Company (13), Chevron (12)
Primary counties: Lea, Eddy, Chaves
Top Operators:
Logos Operating (148), Hilcorp Energy Company (136), Advanced Wireless Communications (47), Enduring Resources (41), N M & O Operating Company (41), Rim Operating (33), Energen Resources (32), Dugan Production (29), Bensonmontingreer Drilling (27), High River Resources Operating LLC (24)
Primary counties: Rio Arriba, San Juan
Top Operators:
High River Resources Operating LLC (535), Ep Energy E And P Company (20), Pennzenergy Exp & Production (10), Wapiti Operating (9), Odessa Natural (8), Bpx Operating Company (7), Bennett Petroleum (6), Hng Fossil Fuel Company (5), W E Bakke Jr (4), Kelly Bell (3)
Primary counties: Colfax, Mora
Top Operators:
Scout Energy Management (104), Ram Energy (77), Texaco Exploration And Production (61), Lh Operating LLC (51), Sirgo Operating (31), Oxy (28), Southwest Royalties (17), Legacy Reserves Operating (16), Chevron (12), Conocophillips Company (10)
Primary counties: Lea, Eddy
Top Operators:
Spur Energy Partners LLC (142), Sep Legacy LLC (86), Riley Permian Operating (70), Hilcorp Energy Company (58), Longfellow Energy (26), Burnett Oil (23), Mack Energy (10), Cog Operating (8), Morning Star Oil Company (7), Eog Resources (7)
Primary counties: Eddy, Lea
Top Operators:
High River Resources Operating LLC (315), Ep Energy E And P Company (7), Pennzenergy Exp & Production (3), Wapiti Operating (1)
Primary counties: Colfax
Top Operators:
Enercap (18), Public Lands Exploration (15), Ckg Energy (9), Transpecos Resources (7), Shell Oil Company (6), Eog Resources (6), Moranlavaca LLC (4), Mcclellan Oil (4), Sonoma Energy (4), Alta Mesa Services (3)
Primary counties: Guadalupe, De Baca, Quay, Curry, San Miguel
Top Operators:
Permian Resources Operating LLC (30), Novo Oil & Gas Texas (9), Mewbourne Oil Company (6), Devon Energy Production Company (1), Eog Resources (1)
Primary counties: Eddy
Top Operators:
Kinder Morgan Production (12), Ridgeway Arizona Oil (7), Transocean Oil (4), Shell Oil Company (3), Metano Resources (3), A N Spanel W O Heinze (2), Djr Operating (2), Reeves Brothers Petroleum (2), Black Oil Company (1), Imperial Oil Properties (1)
Primary counties: Catron, Luna, Grant, Rio Arriba, San Juan
Top Operators:
Twining Drilling (7), Chaparral Energy (4), Threshold Development Company (3), Jalapeno (3), Primero Operating (2), Heyco Development (2), David V Alcorn (1), Mack Energy (1), Harvey E Yates Company (1), Cibola Energy (1)
Primary counties: Otero, Lincoln, Socorro, Sierra, Dona Ana
Source: New Mexico Oil Conservation Division (NMOCD) well-header records, aggregated by primary play / interpreted formation / basin.
Threshold: Groups require at least 25 recorded wells and a known operator. The directory shows up to 50 groups by well count; omitted groups are not evidence of no activity.
Owner context: These formation summaries describe reported activity. They do not establish ownership, payment entitlement or a value for an individual tract.
Refresh cadence: Daily refresh scheduled. Stored source refresh: 2026-09-16.
The highest well-count formation/play groups listed for New Mexico are the Avalon-Bone Spring, Permian Basin, Pictured Clliffs, Morrow and Nw Shelf Perm-Penn Carbonate, among others. This directory tracks 21 recorded formation/play groups ranked by well count, per New Mexico Oil Conservation Division (NMOCD) records. Stored source refresh: 2026-09-16. These are limited stored records; reporting windows are evaluated at source refresh.
The Avalon-Bone Spring has the most wells among the listed New Mexico groups — 29,827 wells, worked by 656 recorded operators, per NMOCD well-header data. This is a well-count ranking, not a reserves or value ranking. Stored source refresh: 2026-09-16. These are limited stored records; reporting windows are evaluated at source refresh.
The operators with the most wells on record in the Avalon-Bone Spring are EOG Resources, Devon Energy Production Company, Oxy, COG Operating, Mewbourne Oil Company. Each formation card below lists its top operators by well count. Stored source refresh: 2026-09-16. These are limited stored records; reporting windows are evaluated at source refresh.
About 8,348 drilling permits were filed across the tracked New Mexico formations in the 24-month window at source refresh, per NMOCD records — a rough measure of where new activity is concentrated. Stored source refresh: 2026-09-16. These are limited stored records; reporting windows are evaluated at source refresh.
Your deed and county records determine which formations your mineral rights cover; a tract can own multiple stacked formations. This directory is informational only, not a valuation. Stored source refresh: 2026-09-16. These are limited stored records; reporting windows are evaluated at source refresh.
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State: New Mexico
Active formations: 21
Total wells: 117,168
Recent permits: 8,348
Last refresh: 2026-09-16
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