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Texas oil lease · RRC district 01 · Lease 20289

Producing

CLARK UNIT

Clark Unit is an oil lease in Gonzales County, Texas, operated by Repsol Oil & Gas USA, LLC in the Eagleville (Eagle Ford-1) field. The Railroad Commission shows 50,540 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 5 wells

50,540bbl oil, last 12 months−22% vs prior year
RRC lease
01-20289

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Where it sits

This county

Gonzales CountyGonzalesWilsonLavacaFayetteCaldwellBastropDe WittHaysGuadalupeGonzales County
Gonzales County · RRC district 01Open Gonzales County →
Gas, last 12 months
64,990 mcf
Oil in Jul 2026
3,936 bbl
Reporting to the state
since Jan 2021
Wells
5

Production

Month by month, from the state record

What the Railroad Commission says this oil lease produced. Oil is in barrels (bbl). Gas is in thousand cubic feet (mcf).

Oil output fell 22% over the last 12 months

50,540 bbl in the 12 months through Jul 2026, against 64,765 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output fell 22% over the last 12 monthsMonthly oil production and gas for CLARK UNIT, Aug 2023 to Jul 2026. Oil output fell 22% over the last 12 months. 50,540 bbl in the 12 months through Jul 2026, against 64,765 bbl in the 12 months before.Last 12 months: 50,540 bblbbl per monthmcf per month002,50050k5,000100k7,500150k10k200k12.5k250kOct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output fell 22% over the last 12 monthsMonthly oil production and gas for CLARK UNIT, Aug 2023 to Jul 2026. Oil output fell 22% over the last 12 months. 50,540 bbl in the 12 months through Jul 2026, against 64,765 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month002,50050k5,000100k7,500150k10k200k12.5k250kJan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 20289, district 01. Reported through Jul 2026. The state revises recent months.

Gas disposition

Where the gas went

Every month the operator tells the state where each mcf of gas went, using a code. The code decides how your gas is paid.

Since Apr 2026 the lease's gas goes to lease fuel instead of other uses

Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 29.4% of the gas in Feb 2025.

  • Processing plant (3)
  • Lease fuel (1)
  • Other (5 to 8)
  • Flared (4)
Since Apr 2026 the lease's gas goes to lease fuel instead of other usesShare of CLARK UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2026 the lease's gas goes to lease fuel instead of other uses. Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 29.4% of the gas in Feb 2025.Share of the lease’s gas by disposition code, per month0%50%100%Apr 2026: other to fuelFlared 29.4%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Since Apr 2026 the lease's gas goes to lease fuel instead of other usesShare of CLARK UNIT gas by disposition code each month, Aug 2023 to Jul 2026. Since Apr 2026 the lease's gas goes to lease fuel instead of other uses. Where gas goes decides how it is paid: processed gas can carry plant products and processing fees, gas sold straight to a pipeline usually does not. Flaring peaked at 29.4% of the gas in Feb 2025.Share of gas by disposition code0%50%100%Apr 26: other to fuelFlared 29.4%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 20289, district 01. Reported through Jul 2026.

Processing plant (3)

Sent to a gas plant that pulls out natural gas liquids. Your statement should show plant products, and may show processing fees.

Lease fuel (1)

Burned to run equipment on the lease. Not sold, so it pays no royalty. A few percent is normal.

Other (5 to 8)

Gas lift, repressure, carbon black or another use the operator reported.

Flared (4)

Burned off or vented, not sold. It pays no royalty. More than 3% in a month is worth watching.

Over the last 12 months, 6.8% of the gas was flared. 21 months went above 3%, which we mark in the ledger below.

Operator history

Who has run this lease

The operator runs the wells and pays your royalty. When the operator changes, payments often slip for a month or two.

The operator changed 2 times, most recently in Aug 2023

If your statements skip or shrink around a change, ask the new operator's owner relations department whether the month is in suspense.

Operators of this lease over timeInpex Eagle Ford, LLC, Jan 2021 to Dec 2022; Repsol Eagle Ford North, LLC, Jan 2023 to Jul 2023; Repsol Oil & Gas USA, LLC, Aug 2023 to Jul 2026202120222023202420252026Changed Jan 2023Changed Aug 2023Inpex Eagle Ford, LLCJan 2021 to Dec 2022Repsol Eagle Ford North, LLCJan 2023 to Jul 2023Repsol Oil & Gas USA, LLCAug 2023 to now
Operators of this lease over timeInpex Eagle Ford, LLC, Jan 2021 to Dec 2022; Repsol Eagle Ford North, LLC, Jan 2023 to Jul 2023; Repsol Oil & Gas USA, LLC, Aug 2023 to Jul 2026202120222023202420252026Changed Jan 2023Changed Aug 2023Inpex Eagle Ford, LLCJan 2021 to Dec 2022Repsol Eagle Ford North, LLCJan 2023 to Jul 2023Repsol Oil & Gas USA, LLCAug 2023 to now

SourceTexas Railroad Commission Production Data Query, operator by month. Reported through Jul 2026.

Wells

5 wells on this lease

Every well the Railroad Commission links to oil lease 20289 in district 01. The API number is the state’s ID for a well.
Wells on CLARK UNIT
API numberWell no.Status
42-177-343161HActive
42-177-343172HActive
42-177-343183HActive
42-177-343194HActive
42-177-343205HActive

SourceTexas Railroad Commission Wellbore Query, district 01, lease 20289.

Who buys and gathers

Who moves and buys this lease's production

The operator files a Form P-4 with the Railroad Commission naming the companies authorised to gather and buy the oil and gas. The buyer's price is the one your royalty is figured on.
  • Oil

    Rocky Mountain Crude Oil LLC, Enterprise Crude Oil LLC and Gulfmark Energy, Inc. gather it.

    Rocky Mountain Crude Oil LLC gathers it: 50% of it, on the list since Jan 31, 2023 · Enterprise Crude Oil LLC gathers it: 25% of it, on the list since Jan 31, 2023 · Gulfmark Energy, Inc. gathers it: 25% of it, on the list since Jan 31, 2023

  • Gas from oil wells

    Energy Transfer Company buys and gathers it.

    Energy Transfer Company buys it: 100% of it, on the list since Jun 2, 2020 · Energy Transfer Company gathers it: 100% of it, on the list since Jun 2, 2020

Companies that used to be listed: Enterprise Crude Oil LLC (gathers it, until Jan 31, 2023); Gulfmark Energy, Inc. (gathers it, until Jan 31, 2023); Pilot Travel Centers LLC (gathers it, until Jan 31, 2023); Rocky Mountain Crude Oil LLC (gathers it, until Jan 31, 2023); Enterprise Crude Oil LLC (gathers it, until Jun 3, 2022); Gulfmark Energy, Inc. (gathers it, until Jun 3, 2022).

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

711.70 acres on the newest permit

Acres and wells as the operator filed them on its Railroad Commission drilling permits. Your decimal is your net acres over the unit acres, so this is the number to hold your division order against.
Wells on the permits
55 not plugged
Horizontal
5
First completion
Jun 2, 2020
Latest permit
Apr 7, 2020
Wells and acres on the permits for Clark Unit
API numberWell no.Acreson the permit
42-177-343161H711.70
42-177-343172H711.70
42-177-343183H711.70
42-177-343194H711.70
42-177-343205H711.70

SourceRailroad Commission of Texas, drilling permits and wellbore file, Sep 26, 2026 (source 1, source 2). The acres are what the operator filed; they are not a survey.

Estimator

Estimate your royalty for this lease

A rough check before you look at a statement: the state volumes times your decimal, priced at WTI and Henry Hub.

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 CLARK UNIT 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.

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Enter your decimal to see an estimated royalty for each of the last 12 months this lease reported. Nothing you type leaves your browser.

An estimate, not your check

It ignores gathering and processing fees, taxes, plant products and the price your operator actually gets, so your statement will differ. Use it as a ceiling to compare against. Regional gas prices are often below Henry Hub.

Ledger

36 months, newest first

Compare these numbers with your statements. Your share of a month is the “Oil sold” volume times your decimal. Scroll sideways on a phone.
Monthly production, disposition and prices for CLARK UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Repsol Oil3,9364,2193,743473256$80.46$2.89
Jun 2026Repsol Oil4,1563,9723,3660197$84.81$3.15
May 2026Repsol Oil4,2544,5083,483367278$102.13$2.94
Apr 2026Repsol Oil4,3474,3792,9490770$100.32$2.77
Mar 2026Repsol Oil5,3615,35010,2191,917272$91.38$3.04
Feb 2026Repsol Oil3,8333,8302,9830403$64.51$3.62
Jan 2026Repsol Oil5,8736,0199,0140742$60.04$7.72
Dec 2025Repsol Oil3,2793,3363,58489205$57.97$4.26
Nov 2025Repsol Oil3,8603,6943,650574170$60.06$3.79
Oct 2025Repsol Oil3,4893,3024,1341,017160$60.89$3.19
Sep 2025Repsol Oil3,9434,0834,3001,426288$63.96$2.97
Aug 2025Repsol Oil4,2093,99113,56510,081691$64.86$2.91
Jul 2025Repsol Oil3,2383,09223,45418,6772,645$68.39$3.20
Jun 2025Repsol Oil3,5063,5177,1362,7011,193$68.17$3.02
May 2025Repsol Oil3,0873,1884,16500$62.17$3.12
Apr 2025Repsol Oil4,3864,7719,4184,3351,254$63.54$3.42
Mar 2025Repsol Oil6,1955,78715,0828,9572,387$68.24$4.12
Feb 2025Repsol Oil5,0835,33711,7205,2333,448$71.53$4.19
Jan 2025Repsol Oil6,0075,6938,9973,4971,715$75.74$4.13
Dec 2024Repsol Oil6,3676,57511,8286,4231,697$70.12$3.01
Nov 2024Repsol Oil6,5896,40717,19213,228703$69.95$2.12
Oct 2024Repsol Oil6,5776,66314,94411,694248$71.99$2.20
Sep 2024Repsol Oil6,5626,51215,63412,307258$70.24$2.28
Aug 2024Repsol Oil7,1686,95215,32011,718269$76.68$1.99
Jul 2024Repsol Oil7,3847,66511,6218,279119$81.80$2.07
Jun 2024Repsol Oil7,5097,37911,2458,041173$79.77$2.54
May 2024Repsol Oil8,0678,20512,0578,641175$80.02$2.12
Apr 2024Repsol Oil8,7748,68311,7468,50080$85.35$1.60
Mar 2024Repsol Oil8,4268,4349,2655,882178$81.28$1.49
Feb 2024Repsol Oil9,4588,9648,1114,923150$77.25$1.72
Jan 2024Repsol Oil8,0648,3506,2503,411159$74.15$3.18
Dec 2023Repsol Oil9,7329,9357,9704,758168$71.90$2.52
Nov 2023Repsol Oil9,9059,458155,980152,54998$77.69$2.71
Oct 2023Repsol Oil10,64810,84210,6677,194223$85.64$2.98
Sep 2023Repsol Oil11,74912,1964,0680403$89.43$2.64
Aug 2023Repsol Oil12,36512,1574,0700398$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

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Upload your statements for CLARK UNIT. We compare volumes, prices, deductions and timing with the state record and give you the exact question to ask Repsol Oil & Gas USA, LLC.

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  • Fees taken on gas
  • Late payment interest

Around this lease

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Repsol Oil & Gas USA, LLC in Gonzales County

No other producing leases from this operator in this county are in our data yet.

Eagleville (Eagle Ford-1) field

All leases in this field →

Leases within 10 km

Found by the location of their wells.

  • TERRA B

    11,387 bbl last 12 months · 0.8 km away

  • TERRA C

    41,046 bbl last 12 months · 0.8 km away

  • TERRA E

    90,252 bbl last 12 months · 0.8 km away

  • TERRA F

    81,981 bbl last 12 months · 0.8 km away

  • TERRA G

    77,843 bbl last 12 months · 0.8 km away

Drilling permits within 10 km

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 20289, 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.