Thirty-one Carbonate-Chert Formation in Texas: Operators, Permits & Activity 2026

Formation data coverage

Formation summary: Stored source refresh: 2026-09-16. This formation/play summary uses recorded well and operator counts and permit dates in the preceding 24 months at summary refresh. Operator counts do not verify current operations. Summary counts and the separately refreshed permit and DUC lists may have different coverage. This is a capped directory of stored records, not a complete statewide count. Permit list: Stored source refresh: 2026-09-17. At most 50 displayed permit records match the formation name, ordered by permit date. This operator-linked list can differ from the summary permit count; a permit is not proof of drilling or production. This is a capped directory of stored records, not a complete statewide count. DUC list: No stored records are available in this view; this does not establish zero activity. At most 30 displayed records match the formation name, ordered by spud date. A spud date with no reported first production is a DUC proxy, not verified completion status. Elapsed days are computed at source refresh. This is a capped directory of stored records, not a complete statewide count.

Formation summary source

Stored source refresh: 2026-09-16. This formation/play summary uses recorded well and operator counts and permit dates in the preceding 24 months at summary refresh. Operator counts do not verify current operations. Summary counts and the separately refreshed permit and DUC lists may have different coverage. This is a capped directory of stored records, not a complete statewide count.

Compiled from Texas Railroad Commission 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.

Permit-list source

Stored source refresh: 2026-09-17. At most 50 displayed permit records match the formation name, ordered by permit date. This operator-linked list can differ from the summary permit count; a permit is not proof of drilling or production. This is a capped directory of stored records, not a complete statewide count.

DUC-list source

No stored records are available in this view; this does not establish zero activity. At most 30 displayed records match the formation name, ordered by spud date. A spud date with no reported first production is a DUC proxy, not verified completion status. Elapsed days are computed at source refresh. This is a capped directory of stored records, not a complete statewide count.

Total Wells

76,706

Recorded Operators

2,144

Total Lateral

12,338 miles

Permits (24mo)

294

Top Operators in the Thirty-One Carbonate-Chert (Texas)

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	8,694
2	Two P Partners LLC	3,823
3	Formentera Operations LLC	3,416
4	Scout Energy Management	3,273
5	Blackbeard Operating	3,179
6	Diamondback Energy	2,572
7	Kinder Morgan Production	2,384
8	Hilcorp Energy Company	2,038
9	Apache	2,021
10	Cog Operating	1,850

Primary Texas Counties for the Thirty-One Carbonate-Chert

The Texas counties with the most Thirty-One Carbonate-Chert activity:

Upton, Crane, Ector, Pecos, Midland

Recent Thirty-One Carbonate-Chert Drilling Permits in Texas

The most recent 4 drilling permits filed for Thirty-One Carbonate-Chert wells in Texas:

Permit Date	Well	API	County	Operator	Lateral (ft)
2025-07-15	Jacobs Livestock 3498s	`4246103452`	Upton	Txp Incorporated	140
2025-02-10	Lynx Swd 1	`4246141625`	Upton	Bobcat Midstream LLC	140
2025-02-10	Bobcat Swd 1	`4246141624`	Upton	Bobcat Midstream LLC	140
2025-02-10	Ursus Swd 1	`4246141550`	Upton	Bobcat Midstream LLC	138

About the Thirty-One Carbonate-Chert Formation in Texas

The Thirty-One Carbonate-Chert is a formation/play group recorded in Texas, with 76,706 wells on file across 2,144 distinct operators of record. Operators have filed 294 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.

Browse listed Texas oil & gas formations & plays · Download the Texas formations dataset (CSV)

Frequently Asked Questions

How many wells target the Thirty-One Carbonate-Chert formation in Texas?

76,706 wells target the Thirty-One Carbonate-Chert in Texas, worked by 2,144 recorded operators, per TX RRC well-header records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.

Who are the top operators in the Thirty-One Carbonate-Chert in Texas?

By well count, the operators with the most Thirty-One Carbonate-Chert 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. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.

How active is the Thirty-One Carbonate-Chert formation right now?

Operators filed 294 drilling permits targeting the Thirty-One Carbonate-Chert in the 24-month window at source refresh, per TX RRC records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.

Is there active drilling in the Thirty-One Carbonate-Chert in Texas?

Operators filed 294 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 TX RRC records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.

What is the current Thirty-One Carbonate-Chert activity in Texas?

Thirty-One Carbonate-Chert activity in Texas includes 76,706 wells on record and 2,144 recorded operators, led by Pioneer Natural Resources, Two P Partners LLC, Formentera Operations LLC, Scout Energy Management and Blackbeard Operating, with 294 drilling permits filed in the 24-month window at source refresh — from Texas Railroad Commission (RRC) well-header records. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.

Which Texas counties have the most Thirty-One Carbonate-Chert activity?

The primary counties recorded for Thirty-One Carbonate-Chert in Texas are Upton, Crane, Ector, Pecos, Midland. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.

How do I find out what my Thirty-One Carbonate-Chert mineral rights are worth?

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. Summary: Stored source refresh: 2026-09-16. Permit list: Stored source refresh: 2026-09-17. DUC list: No stored records are available in this view; this does not establish zero activity. The lists have separate coverage limits.