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Data as of Jul 2026 production (Jun 2026–Jul 2026 provisional) · permits through Oct 14, 2026 · Source: Texas Railroad Commission · Methodology
Home / Operators / COX 12-9 UNIT 1

COX 12-9 UNIT 1

RRC oil lease 49245, district 10 · SPRABERRY (TREND AREA) field · Martin County · operated by DIAMONDBACK E&P LLC

COX 12-9 UNIT 1 at a glance

Oil output in Mar 2026–May 2026 was down 76% from the same three months a year earlier. Over the last 12 months it reported 374,423 BBL of oil and 2,200,215 MCF of gas. In May 2026, the latest month not marked provisional, it reported 23,402 BBL and 162,251 MCF.

374.4KBBL oil, last 12 months▼ 62% vs prior 12
2.2MMCF gas, last 12 months▼ 2% vs prior 12
$2,755.89est. gross royalty for May 2026 at decimal
51new permits in Martin County this month

Royalty = (23,402 BBL × $97.31 WTI, Sep 2026, EIA + 162,251 MCF × $2.95 Henry Hub, Sep 2026, EIA) × your decimal. 0.001 is only a placeholder: enter the decimal from your check stub or division order. Gross, before taxes and deductions. Full estimator →

Oil + condensate (BBL per month, last 36 months)

0100K200K300KAug 23Feb 24Aug 24Feb 25Aug 25Feb 26

Gas (MCF per month, last 36 months)

0100K200K300K400KAug 23Feb 24Aug 24Feb 25Aug 25Feb 26

Jun 2026 and Jul 2026 are provisional (lighter bars) and usually rise as late reports arrive.

COX 12-9 UNIT 1 production history in brief

By oil-equivalent volume over the last 12 months, COX 12-9 UNIT 1 ranks #55 of 5,078 reporting leases in Martin County. It reported production in 34 of the 34 non-provisional months shown, starting in our window in Aug 2023. Its peak oil month in that window was Jan 2025 at 222,493 BBL. The lease is in the SPRABERRY (TREND AREA) field and is operated by DIAMONDBACK E&P LLC; production is reported for the lease as a whole, not per well.

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New permits nearby

New drilling permits issued this month in Martin County. RRC production data has no lease coordinates, so we match by county.

IssuedOperatorLeaseWellDepth (ft)
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 A1JM9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 A1LS9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 B1WB9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 C1DN9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 D1MS9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 E2LS9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 F2JM9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 F2WB9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 G2DN9,700
2026-10-14DIAMONDBACK E&P LLCTATE 11-10 I3JM11,000

Monthly production

MonthOil (BBL)Gas (MCF)
Jul 2026 (provisional)21,038158,656
Jun 2026 (provisional)22,755160,147
May 202623,402162,251
Apr 202622,660161,019
Mar 202622,379132,637
Feb 202629,315163,773
Jan 202627,559164,940
Dec 202533,634204,705
Nov 202536,345205,424
Oct 202539,417220,503
Sep 202544,950225,185
Aug 202550,969240,975
Jul 202556,017238,094
Jun 202558,178234,864
May 202577,571289,035
Apr 202590,160278,482
Mar 2025121,316333,234
Feb 2025146,435316,160
Jan 2025222,493311,891
Dec 2024182,905189,725
Nov 202434,79734,880
Oct 20249413
Sep 20243,8669,327
Aug 20244,6219,666
Jul 20243,6723,587
Jun 20244,8889,510
May 20243,5545,754
Apr 20242,6476,129
Mar 20244,3016,259
Feb 20244,1053,795
Jan 20243,1852,503
Dec 20235,0027,708
Nov 20235,5627,942
Oct 20234,0383,884
Sep 20231,4745,857
Aug 20236,75716,509

Check these figures in the RRC Production Data Query (Specific Lease Query: district 10, lease 49245). Production is reported per lease, so a lease with several wells is not split by well.

Source: Texas Railroad Commission (data sets, Production Data Query). Data date: RRC Production Data Query dump, extract dated Sep 18, 2026; production through Jul 2026. Jun 2026 and Jul 2026 are provisional: operators file late and amend, so these months usually rise in later releases. Oil = crude oil + condensate (BBL); gas = gas-well gas + casinghead gas (MCF), as reported to RRC. Methodology.