UL MOCKINGBIRD 13-2 C

UL MOCKINGBIRD 13-2 C is a Texas oil lease in Martin County, Railroad Commission district 08, operated by Diamondback E&P LLC. It has 1 wellbore on file with the Commission. Reported production runs from May 2022 to August 2026, totalling 319,704 barrels. The lease is currently producing. Fitting a decline curve to that history and pricing the remaining production at today's forward curve values the whole lease — a 100% undivided interest — at about $8.9M, with roughly $1.9M expected over the next twelve months. An individual royalty owner receives their own decimal interest times that figure. Over the last twelve months on file it averaged 2,391 barrels a month. Its strongest month on the record we hold was June 2022, at 35,257 barrels. In our own backtest, leases producing at this rate are forecast to within about 17% of what they went on to produce, and that measured error is the range shown on the page rather than a confidence of our own devising.

Key facts about UL MOCKINGBIRD 13-2 C

Who operates UL MOCKINGBIRD 13-2 C?: UL MOCKINGBIRD 13-2 C is operated by Diamondback E&P LLC, Railroad Commission of Texas operator number 217012.
Where is UL MOCKINGBIRD 13-2 C?: UL MOCKINGBIRD 13-2 C is a Texas oil lease in Martin County, Texas, in Railroad Commission district 08. Its Railroad Commission lease number is 57586.
Is UL MOCKINGBIRD 13-2 C still producing?: UL MOCKINGBIRD 13-2 C is currently producing. The most recent month of production reported to the Railroad Commission of Texas for UL MOCKINGBIRD 13-2 C is August 2026.
How much has UL MOCKINGBIRD 13-2 C produced?: UL MOCKINGBIRD 13-2 C has reported 319,704 barrels of oil (bbl) to the Railroad Commission of Texas between May 2022 and August 2026, from 1 wellbore.
How much is UL MOCKINGBIRD 13-2 C worth?: The remaining production from UL MOCKINGBIRD 13-2 C is estimated to be worth about $8.9M in total as of 27 August 2026, within a range of $7.4M to $10.5M. That figure is the whole lease, undivided — not any one owner's share. A royalty interest in UL MOCKINGBIRD 13-2 C is a fraction of it. The estimate fits an Arps decline curve to the production UL MOCKINGBIRD 13-2 C has already reported, prices the remaining production at the current forward strip, and discounts it at 12% a year. The figure shown for UL MOCKINGBIRD 13-2 C is an estimate of value, not an offer and not an appraisal.
How much income does UL MOCKINGBIRD 13-2 C generate in a year?: UL MOCKINGBIRD 13-2 C is forecast to net about $1.9M across the whole undivided lease over the twelve months following 27 August 2026, before income tax. A royalty owner in UL MOCKINGBIRD 13-2 C receives a fraction of that, set by the decimal interest printed on their check stub.

Lease record

UL MOCKINGBIRD 13-2 C as filed with the Railroad Commission of Texas
Operator	Diamondback E&P LLC
Field	Spraberry (Trend Area)
County	Martin County, Texas
RRC district	08
Lease number	57586
Wellbores	1
Reported production	319,704 bbl
First reported	May 2022
Last reported	August 2026
Estimated royalty value	$8.9M

Where UL MOCKINGBIRD 13-2 C sits

Source: Railroad Commission of Texas lease production records, complete through August 2026. Figures on this page were computed on 27 August 2026.

Production figures are as reported to the Railroad Commission of Texas. The value shown is an estimate produced by fitting a decline curve to that reported history; it is not an offer or an appraisal. How this estimate is calculated.