Texas oil lease · RRC district 01 · Lease 08545
ProducingMAUERMAN -A-
Mauerman -A- is an oil lease in Bexar County, Texas, operated by South Sam Operating Company, LLC in the Monksfield (350 Sand) field. The Railroad Commission shows 247 bbl of oil in the 12 months through Jul 2026.
Oil lease dossier · 289 wells
- Operator
- South Sam Operating Company, LLC
- County
- Bexar County
- RRC lease
- 01-08545
Own a share of this lease?
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Upload a check stub or a phone photo. We compare every month with the state numbers on this page.
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Where it sits
This county
- Oil in Jul 2026
- 0 bbl
- Reporting to the state
- since Jan 2020
- Wells
- 289
- Data through
- Jul 2026
Production
Month by month, from the state record
Oil output rose 89% over the last 12 months
247 bbl in the 12 months through Jul 2026, against 131 bbl in the 12 months before.
- Oil (bars, left axis)
- Last 12 months
SourceTexas Railroad Commission Production Data Query, oil lease 08545, district 01. Reported through Jul 2026. The state revises recent months.
Gas disposition
Where the gas went
No gas disposition reported for this lease
Operator history
Who has run this lease
South Sam Operating Company, LLC has reported this lease for the whole period
No change of operator in the months we hold.
- South Sam Operating Company, LLC Jan 2020 to now
SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.
Wells
200 wells on this lease
| API number | Well no. | Status | Total depthft |
|---|---|---|---|
| 42-029-31792 | R 16 | Shut-in | – |
| 42-029-31793 | R 17 | Shut-in | – |
| 42-029-31809 | R 40 | Active | – |
| 42-029-31810 | R 41 | Active | – |
| 42-029-31811 | R 42 | Active | – |
| 42-029-31812 | R 43 | Active | – |
| 42-029-31813 | R 44 | Active | – |
| 42-029-31814 | R 45 | Active | – |
| 42-029-31815 | R 46 | Active | – |
| 42-029-31816 | R 47 | Active | – |
| 42-029-31817 | R 48 | Active | – |
| 42-029-31818 | R 49 | Active | – |
| 42-029-31845 | R 12 | Active | – |
| 42-029-31846 | R 13 | Active | – |
| 42-029-31847 | R 14 | Shut-in | – |
| 42-029-31848 | R 15 | Active | – |
| 42-029-32300 | F 9 | Active | – |
| 42-029-32301 | F 6 | Active | – |
| 42-029-32302 | F 7 | Active | – |
| 42-029-32303 | F 2 | Active | – |
| 42-029-32304 | F 3 | Active | – |
| 42-029-32305 | F 4 | Active | – |
| 42-029-32306 | F 5 | Active | – |
| 42-029-32307 | C 2 | Active | – |
| 42-029-32308 | C 3 | Active | – |
| 42-029-32309 | C 4 | Active | – |
| 42-029-32310 | C 5 | Active | – |
| 42-029-32311 | D 2 | Active | – |
| 42-029-32312 | D 3 | Active | – |
| 42-029-32313 | D 4 | Active | – |
| 42-029-32314 | D 5 | Active | – |
| 42-029-32315 | D 6 | Active | – |
| 42-029-32316 | D 7 | Active | – |
| 42-029-32317 | D 8 | Active | – |
| 42-029-32318 | D 9 | Active | – |
| 42-029-32319 | D 10 | Active | – |
| 42-029-32326 | C 6 | Active | – |
| 42-029-32327 | C 7 | Active | – |
| 42-029-32328 | C 8 | Active | – |
| 42-029-32329 | C 9 | Active | – |
| 42-029-32330 | C 10 | Active | – |
| 42-029-32331 | C 11 | Active | – |
| 42-029-32332 | F 10 | Active | – |
| 42-029-32333 | F 8 | Active | – |
| 42-029-32334 | E 10 | Active | – |
| 42-029-32338 | F 12 | Shut-in | – |
| 42-029-32339 | F 11 | Shut-in | – |
| 42-029-32340 | E 2 | Active | – |
| 42-029-32341 | E 3 | Active | – |
| 42-029-32342 | E 4 | Active | – |
| 42-029-32343 | E 5 | Active | – |
| 42-029-32344 | E 6 | Active | – |
| 42-029-32345 | E 7 | Active | – |
| 42-029-32346 | E 8 | Active | – |
| 42-029-32347 | E 9 | Active | – |
| 42-029-32348 | F 1 | Active | – |
| 42-029-32350 | E 1 | Active | – |
| 42-029-32353 | C 1 | Active | – |
| 42-029-32354 | C 12 | Active | – |
| 42-029-32355 | D 1 | Active | – |
| 42-029-32391 | R 63 | Active | – |
| 42-029-32392 | R 64 | Active | – |
| 42-029-32395 | R 58 | Active | – |
| 42-029-32396 | R 59 | Active | – |
| 42-029-32397 | R 61 | Active | – |
| 42-029-32398 | R 60 | Active | – |
| 42-029-32399 | R 65 | Active | – |
| 42-029-32401 | R 66 | Active | – |
| 42-029-32403 | R 67 | Active | – |
| 42-029-32406 | R 69 | Active | – |
| 42-029-32407 | R 70 | Active | – |
| 42-029-32408 | R 71 | Active | – |
| 42-029-32412 | R 62 | Active | – |
| 42-029-32577 | G 9 | Active | – |
| 42-029-32578 | G 2 | Active | – |
| 42-029-32579 | G 11 | Active | – |
| 42-029-32580 | G 4 | Active | – |
| 42-029-32581 | G 3 | Active | – |
| 42-029-32582 | G 7 | Active | – |
| 42-029-32583 | G 6 | Active | – |
| 42-029-32584 | G 5 | Active | – |
| 42-029-32588 | G 1 | Active | – |
| 42-029-32589 | G 8 | Active | – |
| 42-029-32608 | G 10 | Active | – |
| 42-029-32653 | I 3 | Active | – |
| 42-029-32654 | I 4 | Active | – |
| 42-029-32655 | I 5 | Active | – |
| 42-029-32656 | I 6 | Active | – |
| 42-029-32657 | I 7 | Active | – |
| 42-029-32658 | I 8 | Active | – |
| 42-029-32659 | I 1 | Active | – |
| 42-029-32660 | I 2 | Active | – |
| 42-029-32661 | H 1 | Active | – |
| 42-029-32662 | H 2 | Active | – |
| 42-029-32663 | H 3 | Active | – |
| 42-029-32664 | H 4 | Active | – |
| 42-029-32665 | H 5 | Active | – |
| 42-029-32666 | H 6 | Active | – |
| 42-029-32667 | H 7 | Active | – |
| 42-029-32668 | H 8 | Active | – |
| 42-029-32669 | H 9 | Active | – |
| 42-029-32670 | H 10 | Active | – |
| 42-029-32671 | I 9 | Active | – |
| 42-029-32672 | K 1 | Active | – |
| 42-029-32673 | K 2 | Active | – |
| 42-029-32674 | K 3 | Active | – |
| 42-029-32675 | K 4 | Active | – |
| 42-029-32676 | K 5 | Active | – |
| 42-029-32677 | K 6 | Active | – |
| 42-029-32678 | K 7 | Active | – |
| 42-029-32679 | L 1 | Active | – |
| 42-029-32680 | L 2 | Active | – |
| 42-029-32681 | L 3 | Active | – |
| 42-029-32682 | L 4 | Active | – |
| 42-029-32683 | L 5 | Active | – |
| 42-029-32684 | L 6 | Active | – |
| 42-029-33122 | M 4 | Active | – |
| 42-029-33123 | M 3 | Active | – |
| 42-029-33124 | M 2 | Active | – |
| 42-029-33126 | N 2 | Active | – |
| 42-029-33127 | N 1 | Active | – |
| 42-029-33128 | M 5 | Active | – |
| 42-029-33130 | P 1 | Active | – |
| 42-029-33131 | N 4 | Active | – |
| 42-029-33132 | M 1 | Active | – |
| 42-029-33740 | R 34 | Shut-in | – |
| 42-029-33741 | R 53 | Active | – |
| 42-029-33742 | R 54 | Active | – |
| 42-029-33743 | R 33 | Shut-in | – |
| 42-029-33744 | R 32 | Active | – |
| 42-029-33745 | R 51 | Shut-in | – |
| 42-029-33746 | R 52 | Shut-in | – |
| 42-029-36972 | C 3A | Active | – |
| 42-029-36973 | C 9A | Active | – |
| 42-029-36974 | 9DE | Active | – |
| 42-029-36975 | 10DE | Active | – |
| 42-029-36976 | 11DE | Active | – |
| 42-029-36977 | 12DE | Active | – |
| 42-029-36978 | 13DE | Active | – |
| 42-029-36979 | E 6A | Active | – |
| 42-029-36980 | E 5A | Active | – |
| 42-029-36981 | E 4A | Active | – |
| 42-029-36982 | D 6A | Active | – |
| 42-029-36983 | 15DE | Active | – |
| 42-029-36984 | 14DE | Active | – |
| 42-029-36985 | C 4A | Active | – |
| 42-029-36986 | C 6A | Active | – |
| 42-029-36987 | C 5A | Active | – |
| 42-029-36988 | 8DE | Active | – |
| 42-029-36989 | 7DE | Active | – |
| 42-029-36992 | F 7A | Active | – |
| 42-029-36993 | F 10A | Active | – |
| 42-029-36994 | C 7A | Active | – |
| 42-029-36995 | 11GH | Active | – |
| 42-029-36996 | 8GH | Active | – |
| 42-029-36997 | 14GH | Active | – |
| 42-029-36998 | 14HI | Active | – |
| 42-029-36999 | 7HI | Active | – |
| 42-029-37000 | F 5A | Active | – |
| 42-029-37001 | 4HI | Active | – |
| 42-029-37002 | F 9A | Active | – |
| 42-029-37003 | I 3A | Active | – |
| 42-029-37004 | F 11A | Shut-in | – |
| 42-029-37005 | D 9A | Active | – |
| 42-029-37007 | C 10A | Active | – |
| 42-029-37008 | 4FG | Active | – |
| 42-029-37009 | 10GH | Active | – |
| 42-029-37010 | 10EF | Active | – |
| 42-029-37011 | 8EF | Active | – |
| 42-029-37012 | 7GH | Active | – |
| 42-029-37013 | G 4A | Active | – |
| 42-029-37014 | 15GH | Active | – |
| 42-029-37015 | G 7A | Active | – |
| 42-029-37016 | E 7A | Active | – |
| 42-029-37017 | 13HI | Active | – |
| 42-029-37018 | 6HI | Active | – |
| 42-029-37019 | I 7A | Active | – |
| 42-029-37020 | I 2A | Active | – |
| 42-029-37021 | E 10A | Active | – |
| 42-029-37022 | E 2A | Active | – |
| 42-029-37023 | D 8A | Active | – |
| 42-029-37024 | 6FG | Active | – |
| 42-029-37025 | F 6A | Active | – |
| 42-029-37026 | F 8A | Active | – |
| 42-029-37027 | C 8A | Active | – |
| 42-029-37028 | 12GH | Active | – |
| 42-029-37029 | 3FG | Active | – |
| 42-029-37030 | 9GH | Active | – |
| 42-029-37031 | 13GH | Active | – |
| 42-029-37032 | 15HI | Active | – |
| 42-029-37033 | 9EF | Active | – |
| 42-029-37034 | 12HI | Active | – |
| 42-029-37035 | 5HI | Active | – |
| 42-029-37036 | I 6A | Active | – |
| 42-029-37037 | D 10A | Active | – |
| 42-029-37038 | G 2A | Active | – |
| 42-029-37039 | D 7A | Active | – |
| 42-029-37040 | 5FG | Active | – |
| 42-029-37041 | G 5A | Active | – |
| 42-029-37042 | 2FG | Active | – |
SourceTexas Railroad Commission Wellbore Query, district 01, lease 08545.
Who buys and gathers
Who moves and buys this lease's production
Oil
Gulfmark Energy, Inc. gathers it.
100% of it, on the list since Jan 25, 2019
Companies that used to be listed: Ace Gathering, Inc. (gathers it, until Jan 25, 2019).
SourceRailroad Commission of Texas, Form P-4 file, dated Sep 24, 2026 (source). A listed company is authorised to move or buy the production; the state does not say what it paid.
Unit and wells
259 acres on the newest permit
- Wells on the permits
- 290149 not plugged
- Horizontal
- 0
- First completion
- Sep 20, 1982
- Latest permit
- Jun 11, 1986
The wells on this lease state different acreage
The permits state between 259 and 2,595 acres. Use the acres from your own division order for the well you are paid on.
290 wells are listed on this lease
Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.
| API number | Well no. | Permit issued | Completed | Acreson the permit |
|---|---|---|---|---|
| 42-029-37586 | D 3A | Jun 11, 1986 | Jun 26, 1986 | 259 |
| 42-029-37549 | C 11A | May 23, 1986 | Jun 16, 1986 | 259 |
| 42-029-37550 | G 1A | May 23, 1986 | Jun 16, 1986 | 259 |
| 42-029-37132 | 7CD | Jan 16, 1986 | Jan 29, 1986 | 259 |
| 42-029-37165 | 25GR | Jan 16, 1986 | Jan 20, 1986 | 259 |
| 42-029-37167 | 5GR | Jan 16, 1986 | Jan 19, 1986 | 259 |
| 42-029-37168 | 1GR | Jan 16, 1986 | Jan 17, 1986 | 259 |
| 42-029-37169 | 24GR | Jan 16, 1986 | Jan 20, 1986 | 259 |
| 42-029-37170 | 22GR | Jan 16, 1986 | Jan 20, 1986 | 259 |
| 42-029-37171 | 12GR | Jan 16, 1986 | Jan 19, 1986 | 259 |
| 42-029-37172 | 13GR | Jan 16, 1986 | Jan 19, 1986 | 259 |
| 42-029-37173 | 21GR | Jan 16, 1986 | Jan 20, 1986 | 259 |
Estimator
Estimate your royalty for this lease
Estimator
What could your check be?
Your decimal interest is the small number on your division order that says what share of the whole lease (8/8ths) is yours. Type it in and we apply it to what the state says MAUERMAN -A- sold each month.
For example 0.00097656, or a fraction like 1/1024.
Dollars per barrel. Your statements show the gap your operator uses. Leave 0 to price oil at WTI.
Your estimate appears here
An estimate, not your check
Ledger
36 months, newest first
| Month | Oil producedbbl | Oil soldbbl | WTI$ per bbl | Henry Hub$ per MMBtu |
|---|---|---|---|---|
| Jul 2026South Sam | 0 | 0 | $80.46 | $2.89 |
| Jun 2026South Sam | 0 | 36 | $84.81 | $3.15 |
| May 2026South Sam | 3 | 0 | $102.13 | $2.94 |
| Apr 2026South Sam | 9 | 0 | $100.32 | $2.77 |
| Mar 2026South Sam | 50 | 46 | $91.38 | $3.04 |
| Feb 2026South Sam | 8 | 0 | $64.51 | $3.62 |
| Jan 2026South Sam | 24 | 74 | $60.04 | $7.72 |
| Dec 2025South Sam | 42 | 0 | $57.97 | $4.26 |
| Nov 2025South Sam | 22 | 0 | $60.06 | $3.79 |
| Oct 2025South Sam | 32 | 34 | $60.89 | $3.19 |
| Sep 2025South Sam | 35 | 58 | $63.96 | $2.97 |
| Aug 2025South Sam | 22 | 46 | $64.86 | $2.91 |
| Jul 2025South Sam | 0 | 0 | $68.39 | $3.20 |
| Jun 2025South Sam | 0 | 0 | $68.17 | $3.02 |
| May 2025South Sam | 25 | 0 | $62.17 | $3.12 |
| Apr 2025South Sam | 21 | 0 | $63.54 | $3.42 |
| Mar 2025South Sam | 10 | 12 | $68.24 | $4.12 |
| Feb 2025South Sam | 6 | 10 | $71.53 | $4.19 |
| Jan 2025South Sam | 8 | 0 | $75.74 | $4.13 |
| Dec 2024South Sam | 8 | 10 | $70.12 | $3.01 |
| Nov 2024South Sam | 4 | 9 | $69.95 | $2.12 |
| Oct 2024South Sam | 5 | 12 | $71.99 | $2.20 |
| Sep 2024South Sam | 22 | 17 | $70.24 | $2.28 |
| Aug 2024South Sam | 22 | 12 | $76.68 | $1.99 |
| Jul 2024South Sam | 12 | 12 | $81.80 | $2.07 |
| Jun 2024South Sam | 12 | 17 | $79.77 | $2.54 |
| May 2024South Sam | 5 | 0 | $80.02 | $2.12 |
| Apr 2024South Sam | 7 | 16 | $85.35 | $1.60 |
| Mar 2024South Sam | 8 | 0 | $81.28 | $1.49 |
| Feb 2024South Sam | 8 | 13 | $77.25 | $1.72 |
| Jan 2024South Sam | 5 | 28 | $74.15 | $3.18 |
| Dec 2023South Sam | 17 | 0 | $71.90 | $2.52 |
| Nov 2023South Sam | 5 | 14 | $77.69 | $2.71 |
| Oct 2023South Sam | 13 | 27 | $85.64 | $2.98 |
| Sep 2023South Sam | 12 | 0 | $89.43 | $2.64 |
| Aug 2023South Sam | 11 | 14 | $81.39 | $2.58 |
No report filed More than 3% of gas flared
SourceVolumes: Texas Railroad Commission Production Data Query, reported through Jul 2026. Prices: EIA WTI Cushing spot and Henry Hub spot, monthly, through Aug 2026. “Gas sold” is gas sent to a transmission line (code 2) or a plant (code 3).
Check your statements
Do your checks match this lease?
Upload your statements for MAUERMAN -A-. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask South Sam Operating Company, LLC.
- A month that was never paid
- Your share of the barrels and mcf
- The price against WTI and Henry Hub
- Fees taken on gas
- Late payment interest
Around this lease
Walk the neighborhood
This lease belongs to
South Sam Operating Company, LLC in Bexar County
- MAUERMANN -B-
663 bbl last 12 months
- MAUERMANN
168 bbl last 12 months
- MCKEAN, M.
94 bbl last 12 months
Monksfield (350 Sand) field
- HIXON PROPERTIES, INC.
2,892 bbl last 12 months
- MAUERMANN -B-
663 bbl last 12 months
- METZGER, H.L.
201 bbl last 12 months
- MAUERMANN
168 bbl last 12 months
- MCKEAN, M.
94 bbl last 12 months
Leases within 10 km
Found by the location of their wells.
- MAUERMAN
2 bbl last 12 months · 0.4 km away
- MCKEAN, M.
94 bbl last 12 months · 0.6 km away
- HEICKMAN -A-
284 bbl last 12 months · 0.8 km away
- MAUERMANN
168 bbl last 12 months · 0.8 km away
- FRIESENHAHN, M.J. #1
0 bbl last 12 months · 1 km away
Drilling permits within 10 km
CASSIN #D 19
re-entry · Alamo Environmental, Inc. · Bexar County · 6.2 km away
Permit 0907616 · Apr 25, 2025
How to read this page
Questions owners ask
What is a decimal interest?
It is your share of the whole lease, written as a decimal. A 1/4 royalty on 5 net acres in a 1,280-acre unit is 1/4 × 5 ÷ 1,280 = 0.00097656. Your division order states yours.
How do I use this page to check a royalty check?
Take the “Oil sold” volume for the month the check covers and multiply it by your decimal. The answer should match the barrels on your statement. If it does not, upload the statement and we will show where the two differ.
Why is the newest month Jul 2026?
The Railroad Commission publishes production two to three months after the fact and revises recent months. We re-pull the latest three months on every update.
Does this page show what my check should be?
No. It shows what the state recorded. Prices, fees and taxes depend on your lease and on what your operator gets for the oil and gas. The estimator gives a ceiling to compare against.
Sources and method
Where these numbers come from
- Production and disposition by month: Texas Railroad Commission Production Data Query, oil lease 08545, district 01, reported through Jul 2026.
- Wells: Texas Railroad Commission Wellbore Query.
- Prices: U.S. Energy Information Administration, WTI Cushing spot and Henry Hub spot, monthly.
- Page updated Sep 28, 2026.
We show the state’s numbers as filed. Where the state has no report for a month, we say so instead of guessing.