SOUTHWEST TEXAS CORP.

Operated by ROMA OIL AND GAS, INC. (P-5 726900) in the LONGHORN, SOUTH field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 12110District 04Field 54762001OilCasinghead gasSaveExport
Value, all time
$591 k
Jan 1993 – Jan 1999
Value, last 12 filed months
$0
at the published price for each month
Months reported
73
no gaps in the span
Streams
2
oil, casinghead gas

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 leases and 15 wells, and the rule below applies to all of them.

Discovered
1958-02-24
as the register files it
Field class
Oil and gas
the register's own label
Between wells
933 ft
minimum
From a lease line
330 ft
minimum

A drilling unit in this field needs at least 20 acres.

The Commission's schedule remark for this field reads: ALLOCATION FORMULA EFFECTIVE 04/01/2001.

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.

StreamBasisVolumeValue
OilDisposition34,996 bbl$565,815
Casinghead gasProduction197,568 Mcf$25,239
Total$591,054

185,663 Mcf of this lease's gas, across 40 months, carries no value here. No free Texas wellhead gas price exists before 1997, so those months are left out of the total rather than valued at zero. The total above is therefore a floor, not an estimate.

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 27.4415, -98.4561. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

27.44146, -98.45613 · centre of the wells drawn, derived

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.

On the schedule
100.0%
1 of 1 wells
With a plug date
100.0%
1 of 1 wells
Median depth
6,000 ft
1 wells filed one
Completion to plug
6.1 years
median over 1 well

What the state filed about each well

On the RRC proration schedule
1100.0%
A plug date is filed
1100.0%
BothOn the schedule and plugged. Neither fact cancels the other.
1100.0%
NeitherNo plug date, and not on the schedule.
00.0%

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 6,000 ft.

Completions filed
Oct 1992
1 of 1 wells
Plug dates filed
Nov 1998
1 of 1 wells

Last completion to plug: a median of 6.1 years across the 1 well that filed both dates, with the middle half between 6.1 years and 6.1 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-1313759116,000 ftOct 1992Nov 1998Yes

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 (73)

Volume × price = value, one row per cycle. The price columns are the same series published on the prices page — nothing here is modelled.

73 months

Jan 19990010.381.90$0
Dec 1998009.201.77$0
Nov 19980010.892.19$0
Oct 19980012.421.97$0
Sep 19980012.592.08$0
Aug 19980011.301.91$0
Jul 19980011.742.24$0
Jun 19980011.242.24$0
May 19980012.622.21$0
Apr 19980013.042.51$0
Mar 19980012.802.31$0
Feb 19980013.952.30$0
Jan 19980014.702.15$0
Dec 19970016.322.41$0
Nov 19970018.193.09$0
Oct 1997178019.253.15$3,427
Sep 1997148017.742.95$2,626
Aug 1997010917.862.55$278
Jul 1997085117.582.25$1,912
Jun 1997451,06517.242.26$3,180
May 19971312,79818.972.31$8,944
Apr 19971823,15017.882.08$9,815
Mar 19971823,93218.951.94$11,074
Feb 1997162020.492.21$3,319
Jan 1997177023.483.54$4,156
Dec 1996330023.32$7,696
Nov 1996180021.97$3,955
Oct 1996361023.31$8,415
Sep 1996182022.22$4,044
Aug 1996136020.26$2,755
Jul 1996344019.55$6,725
Jun 19965121218.73$9,590
May 1996186619.43$3,614
Apr 1996361621.51$7,765
Mar 19963615119.38$6,996
Feb 1996547016.98$9,288
Jan 1996138017.07$2,356
Dec 199518714917.19$3,215
Nov 199516441016.00$2,624
Oct 199535590315.43$5,478
Sep 199545799216.18$7,394
Aug 19954941,50715.92$7,864
Jul 19955342,70515.24$8,138
Jun 19955293,01116.41$8,681
May 19956314,00917.56$11,080
Apr 19956814,52617.73$12,074
Mar 19957163,99816.44$11,771
Feb 19958742,85216.58$14,491
Jan 19959572,92915.92$15,235
Dec 19941,0933,76315.03$16,428
Nov 19948623,08815.90$13,706
Oct 19948763,43015.58$13,648
Sep 19949863,01715.29$15,076
Aug 19941,0343,38316.13$16,678
Jul 19949954,84017.56$17,472
Jun 19941,0845,20217.09$18,526
May 19941,2435,19015.88$19,739
Apr 19941,1095,18714.14$15,681
Mar 19941,2506,17812.46$15,575
Feb 19941,0954,15312.50$13,688
Jan 19941,3105,26712.66$16,585
Dec 19931,0965,61712.33$13,514
Nov 19931,2908,10614.49$18,692
Oct 19931,4859,39115.85$23,537
Sep 19931,2397,70515.03$18,622
Aug 19937372,76915.66$11,541
Jul 19939046,55615.46$13,976
Jun 19935236,42916.79$8,781
May 19936849,60517.68$12,093
Apr 199364511,63218.05$11,642
Mar 199366412,02718.14$12,045
Feb 199366011,44317.90$11,814
Jan 199371013,61916.93$12,020

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.

Oct 1997 — as filed, then multipliedworked
Oil                  178 bbl  × $ 19.25 =     $3,427
Casinghead gas         0 Mcf  × $  3.15 =         $0

────────────────────────────────────────────────────
Month total                                   $3,427

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. 04/O/12110 is the state's own key, not one this site invented.