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Texas oil lease

Producing

MACK 8 UNIT

Mack 8 Unit is an oil lease in Glasscock County, Texas, operated by Apache Corporation in the Jailhouse (Fusselman) field.

3 wells

12,369bbl oil, last 12 months+28% vs prior year
Operator
Apache Corporation
County
Glasscock County
Field
Jailhouse (Fusselman)
RRC lease
08-44881

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Where it sits

This county

Glasscock CountyGlasscockMitchellMartinSterlingMidlandHowardGlasscock County
Glasscock County
Gas, last 12 months
17,837 mcf
Oil in Jul 2026
484 bbl

Production by month

Oil output rose 28% over the last 12 months

Jun 2026 was not reported.

  • Oil (bars)
  • Gas (line)
  • Last 12 months
Oil output rose 28% over the last 12 monthsMonthly oil production and gas for MACK 8 UNIT, Aug 2023 to Jul 2026. Oil output rose 28% over the last 12 months. 11,338 bbl in the 12 months through Jul 2026, against 8,890 bbl in the 12 months before.Last 12 months: 11,338 bblbbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,000Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
Oil output rose 28% over the last 12 monthsMonthly oil production and gas for MACK 8 UNIT, Aug 2023 to Jul 2026. Oil output rose 28% over the last 12 months. 11,338 bbl in the 12 months through Jul 2026, against 8,890 bbl in the 12 months before.Last 12 monthsbbl per monthmcf per month005001,0001,0002,0001,5003,0002,0004,000Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

95% of the gas went to a processing plant in the last 12 months

Flaring peaked at 39.6% of the gas in May 2025.

  • Processing plant (3)
  • Flared (4)
95% of the gas went to a processing plant in the last 12 monthsShare of MACK 8 UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 95% of the gas went to a processing plant in the last 12 months. Flaring peaked at 39.6% of the gas in May 2025.Share of the lease’s gas by disposition code, per month0%50%100%Flared 39.6%Oct 23Jan 24AprJulOctJan 25AprJulOctJan 26AprJul
95% of the gas went to a processing plant in the last 12 monthsShare of MACK 8 UNIT gas by disposition code each month, Aug 2023 to Jul 2026. 95% of the gas went to a processing plant in the last 12 months. Flaring peaked at 39.6% of the gas in May 2025.Share of gas by disposition code0%50%100%Flared 39.6%Jan 24JulJan 25JulJan 26Jul

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

  • Processing plant (3)

    95% · 17,013 mcf

  • Flared (4)

    4.6% · 824 mcf

4.6% of the gas flared in the last 12 months. 5 months above 3%.

3 wells on this lease

Wells on MACK 8 UNIT
API numberWell no.Status
42-173-353911Active
42-173-360904Shut-in
42-173-367755Active

SourceTexas Railroad Commission Wellbore Query.

Buyers and gatherers

Companies named on the Form P-4, by product
CompanyProductRoleShare%From
Apache CorporationOilGathers100Apr 6, 2015
Enlink Gas Marketing, LPCasinghead gasBuys100Apr 6, 2015
Apache CorporationCasinghead gasGathers100Jun 17, 2013

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

Who buys my oilOil price check

360 acres on the newest permit

A pooling certificate was filed

Permits for Mack 8 Unit
API numberWell no.Acreson the permit
42-173-367755360
42-173-360904360
42-173-353911360

SourceRailroad Commission drilling permits, Sep 26, 2026 (source 1, source 2).

Unit decimal checker

What APA Corporation told investors it received

Apache Corporation is linked to APA Corporation (APA).
Realized prices reported by APA Corporation
QuarterOil$ per bblFiling
Q2 2026$98.24SEC filing
Q1 2026$78.69SEC filing
Q4 2025$61.03SEC filing
Q3 2025$67.43SEC filing
Q2 2025$65.58SEC filing
Q1 2025$73.73SEC filing

SourceAPA Corporation quarterly reports, SEC EDGAR, company-wide averages before hedging.

Estimate your royalty

36 months, newest first

Ledger for MACK 8 UNIT
MonthOil producedbblOil soldbblGas producedmcfGas soldmcf, codes 2+3FlaredmcfWTI$/bblHenry Hub$/MMBtu
Jul 20264844737177170$80.46$2.89
Jun 2026No report filed–––––$84.81$3.15
May 20261,1891,1742,0342,00925$102.13$2.94
Apr 20261,1521,1562,2651,854411$100.32$2.77
Mar 20261,1731,1562,1532,001152$91.38$3.04
Feb 20268158011,3991,3990$64.51$3.62
Jan 20265385495425420$60.04$7.72
Dec 202552252179778314$57.97$4.26
Nov 20257788411,133992141$60.06$3.79
Oct 20251,5431,5231,8311,77853$60.89$3.19
Sep 20251,9041,8662,0852,0787$63.96$2.97
Aug 20251,2401,2341,4801,46614$64.86$2.91
Jul 20251,0311,0311,4011,3947$68.39$3.20
Jun 20255445476536458$68.17$3.02
May 2025427427579350229$62.17$3.12
Apr 202531167467666511$63.54$3.42
Mar 20251,0898671,5331,5312$68.24$4.12
Feb 20252282733423420$71.53$4.19
Jan 20254557946056050$75.74$4.13
Dec 20249559921,5211,5201$70.12$3.01
Nov 20241,7741,1852,7612,7610$69.95$2.12
Oct 20245368301,6611,6610$71.99$2.20
Sep 20247377701,4141,4140$70.24$2.28
Aug 20248037921,4821,43250$76.68$1.99
Jul 20249321,0381,8851,87510$81.80$2.07
Jun 20248867451,5101,47238$79.77$2.54
May 20248047591,5711,55714$80.02$2.12
Apr 20241,0111,2301,9571,9570$85.35$1.60
Mar 20241,1371,0552,1032,1030$81.28$1.49
Feb 20248138461,1361,1360$77.25$1.72
Jan 20241,0751,1391,6271,6270$74.15$3.18
Dec 20231,1187641,6641,6631$71.90$2.52
Nov 20232463434734721$77.69$2.71
Oct 20233463527207191$85.64$2.98
Sep 20239651,0701,9131,89815$89.43$2.64
Aug 20237678441,4381,4371$81.39$2.58

No report filed Flared above 3%

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Sep 28, 2026.

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Nearby

This lease belongs to

OperatorApache CorporationFieldJailhouse (Fusselman)CountyGlasscock County

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