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Royalty Clerk

Texas field · RRC field 91817001 · District 08

Tunstill

3 producing leases run by 2 operators in 1 Texas county. The field reported 20,993 barrels of oil and 0 mcf of gas in the 12 months through Jul 2026.

Field dossier · 1 county

20,993bbl oil, last 12 months−29% vs prior year
Producing leases
3of 19 on record
Operators
2
Counties
1
Biggest operator
Boyd & McWilliams Energy Group

Own minerals in this field?

Upload a royalty check stub or a phone photo. We compare each month with the state numbers for your lease and tell you what to ask your operator.

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Where the field sits

This county

Reeves County: 3 producing leasesReevesWinklerWardLovingReeves County
1 countyClick a county to open it
RRC field no.
91817001
RRC district
08
Data through
Jul 2026
Leases on record
19

Production

Five years of output in Tunstill

Monthly totals across the leases the Railroad Commission assigns to this field.

Oil output in the Tunstill field fell 29% over the last 12 months

18.8k bbl in the 12 months through Jul 2026, against 26.5k bbl in the 12 months before. Peak month: May 2022, 4,117 bbl.

Oil output in the Tunstill field fell 29% over the last 12 months18.8k bbl in the 12 months through Jul 2026, against 26.5k bbl in the 12 months before. Peak month: May 2022, 4,117 bbl.Oil, bbl per month01,0002,0003,0004,0005,000Peak 4,117 (May 22)1,32020222023202420252026
Oil output in the Tunstill field fell 29% over the last 12 months18.8k bbl in the 12 months through Jul 2026, against 26.5k bbl in the 12 months before. Peak month: May 2022, 4,117 bbl.Oil, bbl per month01,0002,0003,0004,0005,000Peak 4,117 (May 22)1,320'22'23'24'25'26

SourceTexas Railroad Commission, Production Data Query, summed over the leases assigned to field 91817001. Reported through Jul 2026, file dated Sep 18, 2026. The newest month is often revised as operators file late.

Leases

Leases in the Tunstill field

Ranked by last-12-month output. Filter by operator, and open any lease for its month-by-month ledger.

Showing 3 of 3.

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SourceTexas Railroad Commission, Production Data Query. Ranked by an approximate value of last-12-month output, so oil and gas wells sort together.

In the Tunstill field

Who operates here, and where

Each operator and county links to its own page, so you can see the rest of what they run.

Operators in this field, by oil

Boyd & McWilliams Energy Group leads

  1. Boyd & McWilliams Energy Group1 producing lease here18.6kbbl
  2. Pearce, Roy F., JR.2 producing leases here212bbl

Counties in this field, by oil

Reeves County leads

  1. Reeves County3 producing leases18.8kbbl

Recent drilling permits in the Tunstill field

For owners

What a field is, and why it matters to your check

RRC field number
91817001
RRC district
08
Leases on record
19
Producing leases
3

The Railroad Commission assigns each lease to a field: the underground pool or formation it produces from. A field can cross county lines and hold leases from many operators. Leases in the same field often move together, because they draw on the same rock.

That makes the field a fair yardstick. If your lease fell sharply and the rest of Tunstill did not, that is worth a question to your operator. If the whole field fell, the cause is probably geology or price, not your check.

The field trend above sums every lease in the field, so it is a good comparison for the lease page of any lease listed here.