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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 / CALVERLEY 37-36

CALVERLEY 37-36

RRC oil lease 49857, district 10 · SPRABERRY (TREND AREA) field · Glasscock County · operated by COG OPERATING LLC

CALVERLEY 37-36 at a glance

Gas output in Mar 2026–May 2026 was down 5% from the same three months a year earlier. Over the last 12 months it reported 153,391 BBL of oil and 3,029,461 MCF of gas. In May 2026, the latest month not marked provisional, it reported 13,023 BBL and 239,566 MCF.

153.4KBBL oil, last 12 months▼ 16% vs prior 12
3MMCF gas, last 12 months▼ 3% vs prior 12
$1,973.99est. gross royalty for May 2026 at decimal
13new permits in Glasscock County this month

Royalty = (13,023 BBL × $97.31 WTI, Sep 2026, EIA + 239,566 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)

010K20K30KAug 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.

CALVERLEY 37-36 production history in brief

By oil-equivalent volume over the last 12 months, CALVERLEY 37-36 ranks #11 of 2,776 reporting leases in Glasscock County. It reported production in 34 of the 34 non-provisional months shown, starting in our window in Aug 2023. Its peak gas month in that window was Dec 2023 at 326,724 MCF. The lease is in the SPRABERRY (TREND AREA) field and is operated by COG OPERATING 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 Glasscock County. RRC production data has no lease coordinates, so we match by county.

IssuedOperatorLeaseWellDepth (ft)
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 A1WA9,000
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 B1LS8,400
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 C1WB9,000
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 D2WA9,000
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 E2WB9,000
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 F2LS8,400
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 G3WA9,000
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 H3WB9,000
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 I3LS8,400
2026-10-14DIAMONDBACK E&P LLCCOBRA 39-34 L4WB9,000

Monthly production

MonthOil (BBL)Gas (MCF)
Jul 2026 (provisional)11,109241,365
Jun 2026 (provisional)11,362238,831
May 202613,023239,566
Apr 202611,044234,244
Mar 202611,264275,930
Feb 202610,331216,103
Jan 202612,790246,788
Dec 202514,084269,121
Nov 202514,092270,489
Oct 202514,793271,369
Sep 202514,942258,058
Aug 202514,557267,597
Jul 202514,608258,527
Jun 202514,822256,783
May 202515,401267,552
Apr 202514,910261,455
Mar 202515,828260,715
Feb 202512,801231,216
Jan 202516,832271,822
Dec 202416,990274,247
Nov 202415,211262,050
Oct 202414,028256,769
Sep 202413,975246,102
Aug 202416,819262,433
Jul 202418,128269,730
Jun 202418,630261,350
May 202419,0180
Apr 202413,061174,904
Mar 202425,980244,764
Feb 202421,450218,349
Jan 202413,031206,845
Dec 202325,422326,724
Nov 202326,731324,692
Oct 202318,244266,171
Sep 2023230
Aug 20236,903121,786

Check these figures in the RRC Production Data Query (Specific Lease Query: district 10, lease 49857). 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.