UL ACFD 4475
Operated by BLACK SWAN OPCO, LLC (P-5 101935) in the SPRABERRY (TREND AREA) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.
The Railroad Commission's own record for the field this lease produces from, including the spacing rule that governs how close together its wells may be drilled.
These are facts about the field, not about this lease. The field holds 7,461 leases and 22,481 wells, and the rule below applies to all of them.
A drilling unit in this field needs at least 80 acres. The field rule took effect on 2016-03-08.
The Commission's schedule remark for this field reads: “AREA) 85279200.”
What this lease produced, and what it was worth
Oil and condensate are valued on the volume the state records as disposed of; gas and casinghead gas on the volume produced. They are different columns of different files, and the difference is not cosmetic.
| Stream | Basis | Volume | Value |
|---|---|---|---|
| Oil | Disposition | 680,691 bbl | $56,585,474 |
| Casinghead gas | Production | 643,939 Mcf | $2,513,799 |
| Total | $59,099,273 | ||
Wells on this lease (12)
Every wellbore the Railroad Commission records against this lease key, with the depth, the last completion and the plug date exactly as filed. A well with no plug date is not stated to be producing — the state files no such flag.
These wells centre on 31.1792, -101.5912. A lease has no coordinate of its own — that point is the mean of its wells, and they span 3.9 miles.
What these wells add up to
Every figure below is counted over all of this lease's wells, not over the rows listed above. The Railroad Commission files two facts about a well's state — a plug date and a proration-schedule flag — and a well can carry both, so they are published as separate counts and never merged into a status.
What the state filed about each well
A plug date is the date the Commission recorded the wellbore as sealed with cement and abandoned. It is the only end-of-life fact Texas files. There is no "active" flag on a well, so this page does not print one — a well with no plug date is not stated to be producing.
How deep they were drilled
Total depth in feet, 12 of 12 wells. Median 8,251 ft, with the middle half between 8,097 and 8,520 ft; the shallowest is 7,906 ft and the deepest 10,249 ft. The median is published rather than the mean, because a single mis-keyed depth moves a mean and cannot move a median.
When they were last completed
Last completion by decade, 12 of 12 wells, Jul 2025 – Mar 2026. This is the LAST completion filed on each wellbore, not the first — a well recompleted in 2019 counts once, in the 2010s.
12 wells
| 42-38342157 | 0403WA | 7,987 ft | Mar 2026 | — | — |
| 42-38342160 | 0406WA | 8,000 ft | Mar 2026 | — | — |
| 42-38342155 | 0401UB | 8,260 ft | Mar 2026 | — | — |
| 42-38342156 | 0402LB | 8,569 ft | Mar 2026 | — | — |
| 42-38342158 | 0404UB | 8,249 ft | Mar 2026 | — | — |
| 42-38342159 | 0405LB | 8,562 ft | Mar 2026 | — | — |
| 42-38342161 | 0407UB | 8,252 ft | Mar 2026 | — | — |
| 42-38341966 | 3601UB | 8,152 ft | Oct 2025 | — | — |
| 42-38341969 | 3604UB | 8,129 ft | Sep 2025 | — | — |
| 42-38341967 | 3602WA | 7,906 ft | Sep 2025 | — | — |
| 42-38341968 | 3603LB | 8,506 ft | Sep 2025 | — | — |
| 42-38342090 | 1 | 10,249 ft | Jul 2025 | — | — |
The API number is the state's, prefixed 42 for Texas. A well is matched to this lease by the lease key the Commission files on the wellbore record, so a well that has moved between leases appears under each one it was filed against.
Every month this lease reported (11)
Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.
11 months
| May 2026 | 161,695 | 149,955 | 106.41 | 3.05 | $17,662,704 |
| Apr 2026 | 154,923 | 131,281 | 98.93 | 2.87 | $15,703,272 |
| Mar 2026 | 82,373 | 87,039 | 89.75 | 3.15 | $7,667,101 |
| Feb 2026 | 35,141 | 49,452 | 63.50 | 3.75 | $2,416,914 |
| Jan 2026 | 51,510 | 79,337 | 59.13 | 8.00 | $3,680,317 |
| Dec 2025 | 70,461 | 72,316 | 56.66 | 4.41 | $4,311,477 |
| Nov 2025 | 56,986 | 35,768 | 58.59 | 3.93 | $3,479,251 |
| Oct 2025 | 56,464 | 31,810 | 59.38 | 3.30 | $3,457,959 |
| Sep 2025 | 11,138 | 6,981 | 62.74 | 3.08 | $720,278 |
| Aug 2025 | 0 | 0 | 63.93 | 3.01 | $0 |
| Jul 2025 | 0 | 0 | 66.74 | 3.32 | $0 |
How to read this page
The arithmetic is one multiplication per stream per month. Here it is, worked, on a real row from the table above.
Oil 161,695 bbl × $106.41 = $17,205,965 Casinghead gas 149,955 Mcf × $ 3.05 = $456,739 ──────────────────────────────────────────────────── Month total $17,662,704
The volumes are the state's, unchanged
Every barrel and every Mcf on this page is a number the Railroad Commission of Texas published in its monthly production query. Nothing is modelled, estimated or filled in.
The dollars are a multiplication, not a valuation
Volume × a published monthly price. It is not what the operator was paid: it takes no account of a contract, a differential, a transportation deduction, or the share any one owner holds.
Oil and gas are priced differently
Oil is a Texas realisation — the crude oil first purchase price. Gas is a benchmark, because no free Texas wellhead gas series exists at any date. The prices page publishes the difference rather than correcting it away.
A lease is not a well
The state reports oil on lease and gas on well, and this page is the lease grain. 7C/O/23377 is the state's own key, not one this site invented.