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Royalty Clerk

Texas field · RRC field 66633500 · District 7B

Obrien (Strawn)

2 producing leases run by 2 operators in 1 Texas county. The field reported 1,184 barrels of oil and 0 mcf of gas in the 12 months through Jul 2026.

Field dossier · 1 county

1,184bbl oil, last 12 months−23% vs prior year
Producing leases
2of 7 on record
Operators
2
Counties
1
Biggest operator
Iron Bell Operating, LLC

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Where the field sits

This county

Haskell County: 2 producing leasesHaskellBaylorKingStonewallKnoxThrockmortonHaskell County
1 countyClick a county to open it
RRC field no.
66633500
RRC district
7B
Data through
Jul 2026
Leases on record
7

Production

Five years of output in Obrien (Strawn)

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

Oil output in the Obrien (Strawn) field fell 23% over the last 12 months

1,184 bbl in the 12 months through Jul 2026, against 1,545 bbl in the 12 months before. Peak month: Oct 2021, 309 bbl.

Oil output in the Obrien (Strawn) field fell 23% over the last 12 months1,184 bbl in the 12 months through Jul 2026, against 1,545 bbl in the 12 months before. Peak month: Oct 2021, 309 bbl.Oil, bbl per month0100200300400Peak 309 (Oct 21)11720222023202420252026
Oil output in the Obrien (Strawn) field fell 23% over the last 12 months1,184 bbl in the 12 months through Jul 2026, against 1,545 bbl in the 12 months before. Peak month: Oct 2021, 309 bbl.Oil, bbl per month0100200300400Peak 309 (Oct 21)117'22'23'24'25'26

SourceTexas Railroad Commission, Production Data Query, summed over the leases assigned to field 66633500. Reported through Jul 2026, file dated Sep 18, 2026. The newest month is often revised as operators file late.

Leases

Leases in the Obrien (Strawn) field

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

Showing 2 of 2.

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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 Obrien (Strawn) 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

Iron Bell Operating leads

  1. Iron Bell Operating, LLC1 producing lease here753bbl
  2. Scout Energy Management LLC1 producing lease here431bbl

Counties in this field, by oil

Haskell County leads

  1. Haskell County2 producing leases1,184bbl

Recent drilling permits in the Obrien (Strawn) field

No recent drilling permits in this field are in our data yet.

For owners

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

RRC field number
66633500
RRC district
7B
Leases on record
7
Producing leases
2

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 Obrien (Strawn) 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.