76,706 wells across 2,147 recorded operators, with 282 drilling permits filed in the 24-month window at summary refresh.
Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
Quick answer: The Thirty-One Carbonate-Chert formation in Texas has 76,706 wells on record across 2,147 recorded operators, with 282 drilling permits filed in the 24-month window at source refresh. Its operators with the most wells on record are Pioneer Natural Resources, Two P Partners LLC, Formentera Operations LLC, Scout Energy Management and Blackbeard Operating. Source: Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The operators with the most well counts targeting the Thirty-One Carbonate-Chert formation in Texas:
| # | Operator | Wells in Thirty-One Carbonate-Chert |
|---|---|---|
| 1 | Pioneer Natural Resources | 8,700 |
| 2 | Two P Partners LLC | 3,875 |
| 3 | Formentera Operations LLC | 3,476 |
| 4 | Scout Energy Management | 3,278 |
| 5 | Blackbeard Operating | 3,178 |
| 6 | Kinder Morgan Production | 2,735 |
| 7 | Diamondback Energy | 2,592 |
| 8 | Hilcorp Energy Company | 2,515 |
| 9 | Cog Operating | 1,853 |
| 10 | Apache | 1,823 |
The Texas counties with the most Thirty-One Carbonate-Chert activity:
Upton, Crane, Ector, Pecos, Midland
Drilling permits in Texas each year, the Thirty-One Carbonate-Chert count and share of them, and the median lateral length of those Thirty-One Carbonate-Chert permits.
| Year | State permits | This formation | Share | Median lateral |
|---|---|---|---|---|
| 2026 | 8,004 | 115 | 1.4% | 1,130 ft |
| 2025 | 8,037 | 155 | 1.9% | 875 ft |
| 2024 | 8,916 | 180 | 2% | 1,026 ft |
| 2023 | 9,280 | 292 | 3.1% | 952 ft |
| 2022 | 12,110 | 558 | 4.6% | 1,232 ft |
| 2021 | 9,907 | 1,019 | 10.3% | 10,111 ft |
| 2020 | 9,447 | 849 | 9% | 9,967 ft |
| 2019 | 15,566 | 1,437 | 9.2% | 8,563 ft |
Share of each year’s Texas drilling permits by target formation, for the formations with the most permits.
| Year | Permian Basin | Gulf Coast Basin (La - Tx) | Avalon-Bone Spring | Thirty-One Carbonate-Chert | Austin Chalk | East Texas Basin |
|---|---|---|---|---|---|---|
| 2026 | 58.1% | 17.8% | 0.5% | 1.4% | 0.7% | 5.9% |
| 2025 | 62.9% | 19% | 1.4% | 1.9% | 1.2% | 4.5% |
| 2024 | 65.7% | 20.9% | 0.5% | 2% | 0.7% | 3.8% |
| 2023 | 59.7% | 21.5% | 1.8% | 3.1% | 0.9% | 3.7% |
| 2022 | 44.7% | 16.7% | 2.9% | 4.6% | 2% | 3% |
| 2021 | 34.3% | 6.2% | 8.4% | 10.3% | 7.9% | 0.8% |
| 2020 | 24.4% | 3.3% | 11.6% | 9% | 11.2% | 0.3% |
| 2019 | 24.8% | 3.2% | 14% | 9.2% | 12.1% | 0.2% |
Buckhead Energy computes every figure on this page from grouped records in public oil and gas data. The page shows counts, sums, percentiles and indexes only; it does not list individual wells, leases or permits.
Counts under 3 wells and percentiles under 5 wells are withheld; totals are floors.
Share is the formation’s permits as a percent of the state’s permits that year. Median lateral length is published only when at least 5 permits stand behind it.
Last computed: 2026-11-01. These figures are informational only and are not a valuation of any mineral or royalty interest.
The Thirty-One Carbonate-Chert is a formation/play group recorded in Texas, with 76,706 wells on file across 2,147 distinct operators of record. Operators have filed 282 drilling permits targeting the Thirty-One Carbonate-Chert in the 24-month window at summary refresh. These are stored records, not a live measure of drilling.
Recorded formation activity provides regional context. It does not establish ownership, future production, royalty payments or a value for an individual tract. Consult qualified professionals about your specific interest.
76,706 wells target the Thirty-One Carbonate-Chert in Texas, worked by 2,147 recorded operators, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The Thirty-One Carbonate-Chert operators with the most wells on record in Texas are Pioneer Natural Resources, Two P Partners LLC, Formentera Operations LLC, Scout Energy Management and Blackbeard Operating. The full ranking is in the table on this page. Formation summary date: 2026-11-01.
Operators filed 282 drilling permits targeting the Thirty-One Carbonate-Chert in the 24-month window at source refresh, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
Operators filed 282 new drilling permits targeting the Thirty-One Carbonate-Chert in Texas in the 24-month window at source refresh. New permits and spuds record reported activity stages; they do not establish ongoing drilling, per Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
Thirty-One Carbonate-Chert activity in Texas includes 76,706 wells on record and 2,147 recorded operators, with 282 drilling permits filed in the 24-month window at source refresh — from Buckhead Energy analysis of public oil and gas data. Formation summary date: 2026-11-01.
The primary counties recorded for Thirty-One Carbonate-Chert in Texas are Upton, Crane, Ector, Pecos, Midland. Formation summary date: 2026-11-01.
Value depends on your net mineral acres or royalty decimal, the operator, the remaining drilling locations, and current oil and gas prices. This page is informational only, not a valuation. Formation summary date: 2026-11-01.
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Get Your Free Written OfferFormation: Thirty-One Carbonate-Chert
State: Texas
Total wells: 76,706
Recorded operators: 2,147
Permits 24mo: 282
Summary date: 2026-11-01
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