IRBY A
Operated by WELDER EXPLORATION & PROD., INC. (P-5 907297) in the RIVERDALE (2550) 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 8 leases and 8 wells, and the rule below applies to all of them.
A drilling unit in this field needs at least 40 acres.
The Commission's schedule remark for this field reads: “AOF-1 AND AOF-2 EFFECTIVE 02/01/2007.”
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 |
|---|---|---|---|
| Gas | Production | 177,795 Mcf | $1,218,940 |
| Total | $1,218,940 | ||
Wells on this lease (1)
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 28.6703, -97.5627. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 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
The one well that filed a depth was drilled to 3,150 ft.
Last completion to plug: a median of 4.6 years across the 1 well that filed both dates, with the middle half between 4.6 years and 4.6 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.
1 well
| 42-17533895 | 3 A | 3,150 ft | Apr 2006 | Nov 2010 | Yes |
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 (56)
Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.
56 months
| Nov 2010 | 0 | 80.84 | 3.80 | $0 |
| Oct 2010 | 0 | 78.10 | 3.51 | $0 |
| Sep 2010 | 0 | 72.63 | 3.98 | $0 |
| Aug 2010 | 0 | 73.68 | 4.42 | $0 |
| Jul 2010 | 0 | 72.55 | 4.74 | $0 |
| Jun 2010 | 0 | 70.36 | 4.91 | $0 |
| May 2010 | 0 | 71.12 | 4.24 | $0 |
| Apr 2010 | 1,423 | 81.69 | 4.12 | $5,867 |
| Mar 2010 | 0 | 78.39 | 4.39 | $0 |
| Feb 2010 | 0 | 73.58 | 5.44 | $0 |
| Jan 2010 | 0 | 74.36 | 5.96 | $0 |
| Dec 2009 | 896 | 71.44 | 5.48 | $4,913 |
| Nov 2009 | 2,207 | 74.59 | 3.75 | $8,280 |
| Oct 2009 | 3,187 | 72.54 | 4.11 | $13,099 |
| Sep 2009 | 3,320 | 65.54 | 3.06 | $10,175 |
| Aug 2009 | 2,977 | 67.42 | 3.22 | $9,581 |
| Jul 2009 | 3,162 | 61.13 | 3.46 | $10,955 |
| Jun 2009 | 3,952 | 66.16 | 3.90 | $15,393 |
| May 2009 | 2,304 | 54.74 | 3.93 | $9,045 |
| Apr 2009 | 1,362 | 46.77 | 3.59 | $4,886 |
| Mar 2009 | 3,748 | 42.14 | 4.06 | $15,213 |
| Feb 2009 | 2,806 | 32.81 | 4.63 | $13,000 |
| Jan 2009 | 602 | 35.86 | 5.37 | $3,233 |
| Dec 2008 | 3,273 | 37.10 | 5.98 | $19,563 |
| Nov 2008 | 3,713 | 55.49 | 6.86 | $25,473 |
| Oct 2008 | 4,147 | 75.24 | 6.92 | $28,705 |
| Sep 2008 | 3,297 | 101.76 | 7.88 | $25,971 |
| Aug 2008 | 3,451 | 114.22 | 8.48 | $29,275 |
| Jul 2008 | 3,339 | 131.08 | 11.39 | $38,029 |
| Jun 2008 | 3,011 | 131.33 | 13.03 | $39,241 |
| May 2008 | 4,052 | 123.17 | 11.57 | $46,899 |
| Apr 2008 | 4,239 | 110.31 | 10.45 | $44,318 |
| Mar 2008 | 2,841 | 101.90 | 9.66 | $27,456 |
| Feb 2008 | 3,983 | 92.53 | 8.77 | $34,933 |
| Jan 2008 | 3,091 | 90.38 | 8.21 | $25,364 |
| Dec 2007 | 3,097 | 88.33 | 7.30 | $22,614 |
| Nov 2007 | 4,195 | 91.67 | 7.29 | $30,589 |
| Oct 2007 | 4,400 | 82.85 | 6.92 | $30,457 |
| Sep 2007 | 862 | 75.84 | 6.24 | $5,382 |
| Aug 2007 | 270 | 69.06 | 6.39 | $1,725 |
| Jul 2007 | 986 | 70.90 | 6.39 | $6,299 |
| Jun 2007 | 2,901 | 62.00 | 7.55 | $21,898 |
| May 2007 | 4,317 | 58.74 | 7.85 | $33,872 |
| Apr 2007 | 3,092 | 59.61 | 7.81 | $24,134 |
| Mar 2007 | 6,091 | 56.92 | 7.30 | $44,476 |
| Feb 2007 | 6,175 | 55.10 | 8.22 | $50,734 |
| Jan 2007 | 7,383 | 50.30 | 6.73 | $49,664 |
| Dec 2006 | 7,471 | 56.65 | 6.92 | $51,688 |
| Nov 2006 | 7,338 | 54.20 | 7.62 | $55,897 |
| Oct 2006 | 7,774 | 54.90 | 6.01 | $46,751 |
| Sep 2006 | 7,722 | 60.08 | 5.04 | $38,897 |
| Aug 2006 | 8,218 | 68.71 | 7.34 | $60,319 |
| Jul 2006 | 7,825 | 69.37 | 6.34 | $49,632 |
| Jun 2006 | 9,187 | 66.28 | 6.38 | $58,649 |
| May 2006 | 4,108 | 66.01 | 6.42 | $26,394 |
| Apr 2006 | 0 | 64.39 | 7.36 | $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.
Gas 1,423 Mcf × $ 4.12 = $5,867 ──────────────────────────────────────────────────── Month total $5,867
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. 02/G/221285 is the state's own key, not one this site invented.