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Royalty Clerk

Texas oil lease · RRC district 08 · Lease 17839

Producing

ECTOR -K- FEE

Ector -K- Fee is an oil lease in Ector County, Texas, operated by Formentera Operations LLC in the Harper (Strawn) field. The Railroad Commission shows 1,637 bbl of oil in the 12 months through Jul 2026.

Oil lease dossier · 1 well

1,637bbl oil, last 12 months+20% vs prior year
Operator
Formentera Operations LLC
County
Ector County
Field
Harper (Strawn)
RRC lease
08-17839

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Where it sits

This county

Ector CountyEctorMartinMidlandAndrewsWinklerWardEctor County
Ector County · RRC district 08Open Ector County →
Gas, last 12 months
787 mcf
Oil in Jul 2026
145 bbl
Reporting to the state
since Jan 2020
Wells
1

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 rose 20% over the last 12 months

1,637 bbl in the 12 months through Jul 2026, against 1,359 bbl in the 12 months before.

  • Oil (bars, left axis)
  • Gas (line, right axis)
  • Last 12 months
Oil output rose 20% over the last 12 monthsMonthly oil production and gas for ECTOR -K- FEE, Aug 2023 to Jul 2026. Oil output rose 20% over the last 12 months. 1,637 bbl in the 12 months through Jul 2026, against 1,359 bbl in the 12 months before.Last 12 months: 1,637 bblbbl per monthmcf per month00200200400400600600800800Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 20% over the last 12 monthsMonthly oil production and gas for ECTOR -K- FEE, Aug 2023 to Jul 2026. Oil output rose 20% over the last 12 months. 1,637 bbl in the 12 months through Jul 2026, against 1,359 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month00200200400400600600800800Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, oil lease 17839, district 08. 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.

84% of the gas went to a transmission line in the last 12 months

Flaring peaked at 100.0% of the gas in Oct 2024.

  • Transmission line (2)
  • Flared (4)
84% of the gas went to a transmission line in the last 12 monthsShare of ECTOR -K- FEE gas by disposition code each month, Aug 2023 to Jul 2026. 84% of the gas went to a transmission line in the last 12 months. Flaring peaked at 100.0% of the gas in Oct 2024.Share of the lease’s gas by disposition code, per month0%50%100%Flared 100.0%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
84% of the gas went to a transmission line in the last 12 monthsShare of ECTOR -K- FEE gas by disposition code each month, Aug 2023 to Jul 2026. 84% of the gas went to a transmission line in the last 12 months. Flaring peaked at 100.0% of the gas in Oct 2024.Share of gas by disposition code0%50%100%Flared 100.0%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, gas disposition by code, lease 17839, district 08. Reported through Jul 2026.

Transmission line (2)

Sold straight into a pipeline without processing. Processing fees on your statement would be worth asking about.

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, 16.3% of the gas was flared. 18 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 Nov 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 timeApache Corporation, Jan 2020 to Jun 2021; Slant Operating, LLC, Jul 2021 to Oct 2023; Formentera Operations LLC, Nov 2023 to Jul 20262020202120222023202420252026Changed Jul 2021Changed Nov 2023Apache CorporationJan 2020 to Jun 2021Slant Operating, LLCJul 2021 to Oct 2023Formentera Operations LLCNov 2023 to now
Operators of this lease over timeApache Corporation, Jan 2020 to Jun 2021; Slant Operating, LLC, Jul 2021 to Oct 2023; Formentera Operations LLC, Nov 2023 to Jul 20262020202120222023202420252026Changed Jul 2021Changed Nov 2023Apache CorporationJan 2020 to Jun 2021Slant Operating, LLCJul 2021 to Oct 2023Formentera Operations LLCNov 2023 to now

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

Wells

1 well on this lease

Every well the Railroad Commission links to oil lease 17839 in district 08. The API number is the state’s ID for a well.
Wells on ECTOR -K- FEE
API numberWell no.Status
42-135-103619 HActive

SourceTexas Railroad Commission Wellbore Query, district 08, lease 17839.

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

    Plains Marketing, L.p. gathers it.

    100% of it, on the list since Jan 1, 2018

  • Gas from oil wells

    Dcp Operating Company, LP buys and gathers it.

    Dcp Operating Company, LP buys it: 100% of it, on the list since Apr 1, 2017 · Dcp Operating Company, LP gathers it: 100% of it, on the list since Apr 1, 2017

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.

Who buys my oil and gasIs my oil price fair?

Unit and wells

What the drilling permits say

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
21 not plugged
Horizontal
0
First completion
Jul 2, 1963
Latest permit
–
Wells and acres on the permits for Ector -K- Fee
API numberWell no.Acreson the permit
42-135-1023210 F–
42-135-103619 H–

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.

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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 ECTOR -K- FEE 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

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 ECTOR -K- FEE
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3Flaredmcf, code 4WTI$ per bblHenry Hub$ per MMBtu
Jul 2026Formentera Operations14515841410$80.46$2.89
Jun 2026Formentera Operations1487374074$84.81$3.15
May 2026Formentera Operations11991632241$102.13$2.94
Apr 2026Formentera Operations12519862620$100.32$2.77
Mar 2026Formentera Operations12617151510$91.38$3.04
Feb 2026Formentera Operations1178856560$64.51$3.62
Jan 2026Formentera Operations1288348480$60.04$7.72
Dec 2025Formentera Operations12618243430$57.97$4.26
Nov 2025Formentera Operations13410313130$60.06$3.79
Oct 2025Formentera Operations14610267670$60.89$3.19
Sep 2025Formentera Operations155168786513$63.96$2.97
Aug 2025Formentera Operations1681541911910$64.86$2.91
Jul 2025Formentera Operations15313716311548$68.39$3.20
Jun 2025Formentera Operations706348435$68.17$3.02
May 2025Formentera Operations1571631315081$62.17$3.12
Apr 2025Formentera Operations1391541248836$63.54$3.42
Mar 2025Formentera Operations1341264844840$68.24$4.12
Feb 2025Formentera Operations1291414874870$71.53$4.19
Jan 2025Formentera Operations14512652647254$75.74$4.13
Dec 2024Formentera Operations17320119113178$70.12$3.01
Nov 2024Formentera Operations1761491399544$69.95$2.12
Oct 2024Formentera Operations834760060$71.99$2.20
Sep 2024Formentera Operations00000$70.24$2.28
Aug 2024Formentera Operations00000$76.68$1.99
Jul 2024Formentera Operations00000$81.80$2.07
Jun 2024Formentera Operations00000$79.77$2.54
May 2024Formentera Operations386142420$80.02$2.12
Apr 2024Formentera Operations1101171241240$85.35$1.60
Mar 2024Formentera Operations1221371071070$81.28$1.49
Feb 2024Formentera Operations1631621046836$77.25$1.72
Jan 2024Formentera Operations1692821047925$74.15$3.18
Dec 2023Formentera Operations59452653550629$71.90$2.52
Nov 2023Formentera Operations46738844441331$77.69$2.71
Oct 2023Slant Operating,144187997821$85.64$2.98
Sep 2023Slant Operating,13110095914$89.43$2.64
Aug 2023Slant Operating,1511711089117$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).

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Around this lease

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Everything on this page connects to the operator, field and county records. Start from any of them.

This lease belongs to

OperatorFormentera Operations LLCFieldHarper (Strawn)CountyEctor County

Formentera Operations LLC in Ector County

All Formentera Operations LLC leases →

Harper (Strawn) field

All leases in this field →

Leases within 10 km

Found by the location of their wells.

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 17839, district 08, 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.