Matgrda Is-Lb County leases reported 40 barrels of oil and 0 MCF of gas to the Texas Railroad Commission in the 12 months to Jul 2026, ranking #219 of 219 producing Texas counties by oil-equivalent volume.
40BBL oil, last 12 months▼ 81% vs prior 12
0MCF gas, last 12 months▼ 100% vs prior 12
0new permits, Oct 1–Oct 14
15+top leases listed below
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Matgrda Is-Lb County highlighted; dots are its new permits with coordinates.
Matgrda Is-Lb County oil + condensate (BBL per month, last 36 months)
Matgrda Is-Lb County gas (MCF per month, last 36 months)
Jun 2026 and Jul 2026 are provisional (lighter bars) and usually rise as late reports arrive.
Matgrda Is-Lb County production in brief
Matgrda Is-Lb County produced 40 barrels of oil and condensate and 0 MCF of gas in the 12 months from Aug 2025 to Jul 2026, about 0.0% of Texas oil and 0.0% of Texas gas on our county figures. Compared with the previous 12 months, oil was down 81% and gas was down 100%. The highest oil month in the last three years was Oct 2024 at 53 barrels. The largest operators by oil-equivalent volume were WHITE MARLIN OPERATING CO, LLC, TR OFFSHORE, LLC and VAMOS OIL & GAS, LLC. The top lease by oil was STATE TRACT 629-L SW/4, operated by WHITE MARLIN OPERATING CO, LLC, with 20 barrels. RRC issued no new drilling permits in Matgrda Is-Lb County between October 1 and Oct 14, 2026.
Top leases, last 12 months
Lease
Operator
Field
Oil (BBL)
Gas (MCF)
STATE TRACT 629-L SW/4
WHITE MARLIN OPERATING CO, LLC
MATAGORDA BLOCK 629 (4300)
20
0
STATE TRACT 659-L NW/4
WHITE MARLIN OPERATING CO, LLC
MATAGORDA BLOCK 629 (4450 SD)
20
0
COVE MCPAC
BLACK ELK ENERGY OFFSHORE OP LLC
COVE (ME ZONE)
0
0
STATE TRACT 485-L, SW/4
CAPCO OFFSHORE OF TEXAS, INC.
EL GORDO (MIOCENE)
0
0
STATE BLOCK 483-L
VAMOS OIL & GAS, LLC
MATAGORDA ISLAND 483-L (MASSIVE)
0
0
STATE TRACT 485-L
CAPCO OFFSHORE OF TEXAS, INC.
MATAGORDA ISLAND BLK. 485-L (Z)
0
0
TEXAS GULF #57686
BLACK ELK ENERGY OFFSHORE OP LLC
COVE (ME ZONE)
0
0
TEXAS GULF 57686
BLACK ELK ENERGY OFFSHORE OP LLC
COVE (50 SERIES MA)
0
0
TEXAS GULF #57686
BLACK ELK ENERGY OFFSHORE OP LLC
COVE (MF ZONE)
0
0
TEXAS GULF 57686
BLACK ELK ENERGY OFFSHORE OP LLC
COVE (MF ZONE)
0
0
STATE TRACT 520-L, NW/4
TR OFFSHORE, LLC
EL GORDO (11800)
0
0
STATE TRACT 485-L
CAPCO OFFSHORE OF TEXAS, INC.
MATAGORDA ISLAND BLK. 485-L (W)
0
0
TEXAS GULF 57686
BLACK ELK ENERGY OFFSHORE OP LLC
COVE (MA ZONE)
0
0
STATE TRACT 485-L
CAPCO OFFSHORE OF TEXAS, INC.
MATAGORDA ISLAND BLK. 485-L (X)
0
0
STATE TRACT 520-L, NE/4
TR OFFSHORE, LLC
EL GORDO (12300)
0
0
Top operators, last 12 months
Operator
Leases
Oil (BBL)
Gas (MCF)
WHITE MARLIN OPERATING CO, LLC
6
40
0
TR OFFSHORE, LLC
8
0
0
VAMOS OIL & GAS, LLC
4
0
0
CAPCO OFFSHORE OF TEXAS, INC.
8
0
0
GULF ENERGY EXPLORATION CORP.
1
0
0
BLACK ELK ENERGY OFFSHORE OP LLC
11
0
0
New drilling permits this month
No new permits in this county in the current RRC daily file.
Monthly figures
Month
Oil (BBL)
Gas (MCF)
Leases reporting
Jul 2026 (provisional)
0
0
38
Jun 2026 (provisional)
0
0
38
May 2026
0
0
38
Apr 2026
0
0
38
Mar 2026
0
0
38
Feb 2026
0
0
38
Jan 2026
0
0
38
Dec 2025
0
0
38
Nov 2025
0
0
38
Oct 2025
0
0
38
Sep 2025
40
0
38
Aug 2025
0
0
38
Questions about Matgrda Is-Lb County minerals
How do I look up my lease in Matgrda Is-Lb County?
Find the RRC lease number on your check stub, then search it on our lease search or in the RRC Production Data Query using district and lease number. Without a number, open the RRC GIS viewer, go to Matgrda Is-Lb County and click the well. Step by step: how to look up your lease on RRC.
Who are the top operators in Matgrda Is-Lb County?
By oil-equivalent volume over the 12 months to Jul 2026: WHITE MARLIN OPERATING CO, LLC (40 BBL oil, 0 MCF gas), TR OFFSHORE, LLC (0 BBL oil, 0 MCF gas) and VAMOS OIL & GAS, LLC (0 BBL oil, 0 MCF gas). The full list is in the table above.
How are royalties calculated on Matgrda Is-Lb County production?
A gross royalty is roughly (oil volume × oil price + gas volume × gas price) × your decimal interest. Your decimal is on your check stub or division order. County production in May 2026 was 0 BBL of oil; try your own lease in the royalty estimator. Severance tax and any deductions your lease allows reduce the check.
How do I sell mineral rights in Matgrda Is-Lb County?
Start with the production history of your lease on its page here, then compare several offers on the same basis (price per net mineral acre or a multiple of monthly royalty). Recent permits in the county (0 so far this month) can matter to buyers. See how to sell mineral rights. We are not a buyer or broker.
Source: Texas Railroad Commission (data sets, Production Data Query). Data date: RRC Production Data Query dump, extract dated Sep 18, 2026; production through Jul 2026. Jun 2026 and Jul 2026 are provisional: operators file late and amend, so these months usually rise in later releases. Oil = crude oil + condensate (BBL); gas = gas-well gas + casinghead gas (MCF), as reported to RRC. RRC notes county-level figures are allocated estimates based on allowables and potentials. Methodology.