HALFF, M. H., ESTATE

Operated by MOSAIC TEXAS LLC (P-5 589983) in the NOELKE (1400) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Gas lease lease 19044District 7CField 65674450GasSaveExport
Value, all time
$83 k
Jan 1993 – Oct 2025
Value, last 12 filed months
$0
at the published price for each month
Months reported
394
no gaps in the span
Streams
1
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 3 leases and 3 wells, and the rule below applies to all of them.

Discovered
1945-04-03
as the register files it
Field class
Gas
the register's own label
Between wells
no field rule filed
From a lease line
no field rule filed

The Commission's schedule remark for this field reads: ALLOCATION FORMULA 100% % DELIVERABILITY

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
GasProduction25,805 Mcf$83,346
Total$83,346

6,947 Mcf of this lease's gas, across 48 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 30.8644, -101.8280. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

30.86444, -101.82804 · 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
6,800 ft
1 wells filed one
Completion to plug
55.8 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 6,800 ft.

Completions filed
Jan 1970
1 of 1 wells
Plug dates filed
Nov 2025
1 of 1 wells

Last completion to plug: a median of 55.8 years across the 1 well that filed both dates, with the middle half between 55.8 years and 55.8 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well

42-1058136916,800 ftJan 1970Nov 2025Yes

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 (394)

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

394 months

Oct 2025059.383.30$0
Sep 2025062.743.08$0
Aug 2025063.933.01$0
Jul 2025066.743.32$0
Jun 2025066.483.13$0
May 2025060.553.23$0
Apr 2025062.363.54$0
Mar 2025067.704.27$0
Feb 2025070.884.34$0
Jan 2025074.324.28$0
Dec 2024068.993.12$0
Nov 2024069.052.20$0
Oct 2024071.372.28$0
Sep 2024069.612.36$0
Aug 2024075.632.06$0
Jul 2024079.932.15$0
Jun 2024078.082.63$0
May 2024078.812.20$0
Apr 2024084.451.66$0
Mar 2024080.301.55$0
Feb 2024076.091.78$0
Jan 2024073.023.30$0
Dec 2023071.262.61$0
Nov 2023077.892.81$0
Oct 2023085.443.09$0
Sep 2023089.042.74$0
Aug 2023080.522.67$0
Jul 2023074.852.64$0
Jun 2023068.962.26$0
May 2023070.622.23$0
Apr 2023078.122.24$0
Mar 2023072.852.39$0
Feb 2023075.112.47$0
Jan 2023076.533.39$0
Dec 2022076.415.73$0
Nov 2022085.005.65$0
Oct 2022087.185.86$0
Sep 2022084.888.16$0
Aug 2022094.529.13$0
Jul 20220101.587.54$0
Jun 20220115.097.98$0
May 20220109.378.43$0
Apr 20220104.226.84$0
Mar 20220108.885.08$0
Feb 2022091.054.86$0
Jan 2022081.844.54$0
Dec 2021071.323.90$0
Nov 2021077.435.24$0
Oct 2021079.795.71$0
Sep 2021069.865.35$0
Aug 2021066.024.22$0
Jul 2021070.783.98$0
Jun 2021069.493.38$0
May 2021063.483.02$0
Apr 2021060.362.76$0
Mar 2021061.302.72$0
Feb 2021057.805.55$0
Jan 2021050.412.81$0
Dec 2020044.642.68$0
Nov 2020038.772.71$0
Oct 2020036.972.48$0
Sep 2020037.091.99$0
Aug 2020039.982.39$0
Jul 2020038.371.83$0
Jun 2020034.901.69$0
May 2020016.921.81$0
Apr 2020014.751.80$0
Mar 2020030.341.86$0
Feb 2020049.881.98$0
Jan 2020057.252.09$0
Dec 2019059.012.30$0
Nov 2019055.302.75$0
Oct 2019053.472.42$0
Sep 2019055.052.66$0
Aug 2019053.112.30$0
Jul 2019056.272.46$0
Jun 20191052.782.49$25
May 20195658.482.74$153
Apr 2019062.632.75$0
Mar 201927356.803.06$836
Feb 20191050.852.79$28
Jan 20191046.033.23$32
Dec 20181046.594.19$42
Nov 20185552.934.24$233
Oct 2018061.443.40$0
Sep 2018059.543.11$0
Aug 2018059.403.07$0
Jul 2018065.142.93$0
Jun 2018060.183.08$0
May 2018965.382.90$26
Apr 2018063.842.90$0
Mar 2018661.222.79$17
Feb 20185761.782.77$158
Jan 20184862.874.01$192
Dec 20175457.272.92$158
Nov 20178755.423.12$271
Oct 201710849.292.98$322
Sep 201710847.523.09$333
Aug 201714045.373.00$421
Jul 201712843.873.09$395
Jun 201711542.493.09$355
May 2017045.373.26$0
Apr 201713647.933.21$437
Mar 201716746.772.98$498
Feb 201714050.452.95$413
Jan 201710249.413.42$349
Dec 201613448.763.72$499
Nov 201612442.492.64$328
Oct 20167246.193.09$223
Sep 20167741.553.10$239
Aug 20165541.442.92$161
Jul 20161241.622.92$35
Jun 2016745.352.69$19
May 2016042.521.99$0
Apr 2016736.561.99$14
Mar 20162333.011.79$41
Feb 20164026.472.06$83
Jan 20165127.352.36$121
Dec 20156732.362.00$134
Nov 20154538.792.17$98
Oct 20152943.552.43$70
Sep 20158442.992.76$232
Aug 20157540.162.87$215
Jul 20153848.152.95$112
Jun 20154256.152.88$121
May 20153455.212.96$100
Apr 20154249.822.71$114
Mar 20154842.892.93$141
Feb 20154844.662.98$143
Jan 20155643.433.10$174
Dec 20145954.693.59$212
Nov 20145370.464.25$225
Oct 20144778.303.90$183
Sep 20143386.164.05$134
Aug 2014089.394.04$0
Jul 20142796.564.18$113
Jun 20144398.164.74$204
May 20144694.734.73$217
Apr 20143695.944.81$173
Mar 20144095.895.06$202
Feb 20144697.406.19$285
Jan 20146690.404.86$321
Dec 20136791.824.35$292
Nov 20135488.853.74$202
Oct 20136897.423.78$257
Sep 201339104.113.72$145
Aug 201318104.253.52$63
Jul 201329102.523.72$108
Jun 20135694.403.93$220
May 20136694.834.15$274
Apr 20135893.964.28$248
Mar 20135493.623.91$211
Feb 20134091.233.42$137
Jan 20135791.603.42$195
Dec 20125286.773.42$178
Nov 20126586.953.62$236
Oct 20123789.383.40$126
Sep 20123994.672.92$114
Aug 20124992.662.91$143
Jul 20124785.133.02$142
Jun 20124879.822.52$121
May 20124691.612.49$114
Apr 201248101.652.00$96
Mar 201253105.052.22$118
Feb 201250101.102.57$129
Jan 20125898.092.73$159
Dec 20115596.873.24$178
Nov 20115695.723.31$185
Oct 20115084.983.65$182
Sep 20116083.623.99$239
Aug 20115783.404.15$237
Jul 20114294.144.52$190
Jun 20114392.904.64$200
May 20116298.134.40$273
Apr 201180105.964.33$347
Mar 20114096.364.06$162
Feb 20115085.644.18$209
Jan 20115586.504.59$252
Dec 20105785.734.35$248
Nov 20102780.843.80$102
Oct 20101878.103.51$63
Sep 2010072.633.98$0
Aug 2010673.684.42$27
Jul 2010672.554.74$28
Jun 20101370.364.91$64
May 20101071.124.24$42
Apr 2010981.694.12$37
Mar 2010478.394.39$18
Feb 2010073.585.44$0
Jan 20106174.365.96$364
Dec 20097371.445.48$400
Nov 20097974.593.75$296
Oct 20096872.544.11$280
Sep 20096565.543.06$199
Aug 20095967.423.22$190
Jul 20095861.133.46$201
Jun 20096266.163.90$241
May 20097054.743.93$275
Apr 20096746.773.59$240
Mar 20096342.144.06$256
Feb 20096032.814.63$278
Jan 20096535.865.37$349
Dec 20087937.105.98$472
Nov 20087055.496.86$480
Oct 20085975.246.92$408
Sep 200864101.767.88$504
Aug 200877114.228.48$653
Jul 200885131.0811.39$968
Jun 200883131.3313.03$1,082
May 200883123.1711.57$961
Apr 200860110.3110.45$627
Mar 200863101.909.66$609
Feb 20087392.538.77$640
Jan 20083990.388.21$320
Dec 20076588.337.30$475
Nov 20075391.677.29$386
Oct 20073582.856.92$242
Sep 20077875.846.24$487
Aug 200711669.066.39$741
Jul 20079170.906.39$581
Jun 20079162.007.55$687
May 20077458.747.85$581
Apr 20079359.617.81$726
Mar 20077256.927.30$526
Feb 20076655.108.22$542
Jan 20077450.306.73$498
Dec 20067056.656.92$484
Nov 20069154.207.62$693
Oct 200610154.906.01$607
Sep 20067960.085.04$398
Aug 20069868.717.34$719
Jul 200610469.376.34$660
Jun 200610066.286.38$638
May 20068666.016.42$553
Apr 20069564.397.36$699
Mar 20067156.707.08$503
Feb 20062157.597.75$163
Jan 20061760.598.93$152
Dec 20051354.9413.42$174
Nov 20051654.6910.59$169
Oct 20056258.3413.80$855
Sep 20055461.4512.08$652
Aug 20055761.519.80$558
Jul 20057755.697.84$604
Jun 20058552.337.38$627
May 20056845.226.65$452
Apr 20054549.207.36$331
Mar 2005050.377.15$0
Feb 2005045.226.31$0
Jan 2005043.166.32$0
Dec 2004039.866.75$0
Nov 200417145.286.33$1,083
Oct 200423649.706.52$1,538
Sep 200419843.245.28$1,046
Aug 200420542.375.55$1,138
Jul 200421638.286.08$1,314
Jun 200420736.106.43$1,332
May 200410837.486.49$701
Apr 200410634.475.86$621
Mar 200411934.365.53$658
Feb 200415032.455.51$826
Jan 200422032.036.30$1,386
Dec 200314930.266.30$939
Nov 200316328.804.60$749
Oct 200317328.174.76$823
Sep 200314326.314.75$679
Aug 200316529.765.13$846
Jul 200315829.415.17$817
Jun 200313228.565.98$790
May 200312026.595.97$717
Apr 20032726.675.41$146
Mar 20036431.146.10$390
Feb 20033733.487.93$293
Jan 20033630.315.58$201
Dec 20025826.914.85$282
Nov 20022924.664.14$120
Oct 20025126.464.23$216
Sep 20026527.443.64$236
Aug 20029525.963.16$301
Jul 20026924.583.06$211
Jun 20029023.733.34$300
May 200210524.663.58$376
Apr 20027323.653.51$256
Mar 20029922.003.10$307
Feb 200212018.222.38$285
Jan 200210017.172.38$238
Dec 20018716.932.36$206
Nov 20017618.072.41$183
Oct 20018819.782.53$223
Sep 20013824.262.25$86
Aug 2001024.873.05$0
Jul 2001023.933.20$0
Jun 20012924.563.82$111
May 20016125.524.31$263
Apr 20015124.685.34$272
Mar 20014424.545.38$237
Feb 20014927.755.77$283
Jan 20012627.478.40$218
Dec 2000826.889.12$73
Nov 20004032.215.66$226
Oct 2000831.235.15$41
Sep 20005931.875.19$306
Aug 20006429.644.54$291
Jul 20007828.534.09$319
Jun 20006829.304.40$299
May 20008227.263.68$302
Apr 20004424.513.12$137
Mar 20005428.422.86$154
Feb 20009927.622.73$270
Jan 200011325.272.48$280
Dec 199911224.282.42$271
Nov 19998923.192.43$217
Oct 19997620.982.80$213
Sep 199914521.752.62$380
Aug 199916219.262.88$466
Jul 199916317.892.37$387
Jun 199914115.942.36$333
May 199916315.792.32$378
Apr 199913315.102.21$294
Mar 199910412.471.84$191
Feb 1999849.981.82$153
Jan 19998610.381.90$163
Dec 1998399.201.77$69
Nov 19986010.892.19$131
Oct 1998112.421.97$2
Sep 1998012.592.08$0
Aug 1998011.301.91$0
Jul 1998011.742.24$0
Jun 1998011.242.24$0
May 1998612.622.21$13
Apr 199810713.042.51$268
Mar 199813512.802.31$312
Feb 19988813.952.30$202
Jan 199813014.702.15$280
Dec 199720216.322.41$487
Nov 199713918.193.09$429
Oct 199714419.253.15$454
Sep 199711917.742.95$352
Aug 199715917.862.55$406
Jul 19979917.582.25$222
Jun 199713917.242.26$314
May 199715818.972.31$365
Apr 199713817.882.08$287
Mar 199720218.951.94$392
Feb 199711420.492.21$251
Jan 199716223.483.54$573
Dec 199612023.32$0
Nov 199618621.97$0
Oct 19969123.31$0
Sep 199617722.22$0
Aug 199611820.26$0
Jul 19967819.55$0
Jun 19969818.73$0
May 199619019.43$0
Apr 19967521.51$0
Mar 19968419.38$0
Feb 19967916.98$0
Jan 19966317.07$0
Dec 199510217.19$0
Nov 199511916.00$0
Oct 19955515.43$0
Sep 199517416.18$0
Aug 199517415.92$0
Jul 199513615.24$0
Jun 199514116.41$0
May 199514417.56$0
Apr 199513317.73$0
Mar 199512616.44$0
Feb 199510016.58$0
Jan 199510515.92$0
Dec 199413215.03$0
Nov 199410515.90$0
Oct 199410515.58$0
Sep 199413215.29$0
Aug 199416016.13$0
Jul 199416617.56$0
Jun 199415317.09$0
May 199411715.88$0
Apr 199417114.14$0
Mar 19949612.46$0
Feb 199412512.50$0
Jan 199415912.66$0
Dec 199316712.33$0
Nov 199318314.49$0
Oct 199318915.85$0
Sep 199317815.03$0
Aug 199321615.66$0
Jul 199323415.46$0
Jun 199321416.79$0
May 199319217.68$0
Apr 199321618.05$0
Mar 199322618.14$0
Feb 199319817.90$0
Jan 199324516.93$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.

Jun 2019 — as filed, then multipliedworked
Gas                   10 Mcf  × $  2.49 =        $25

────────────────────────────────────────────────────
Month total                                      $25

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/G/19044 is the state's own key, not one this site invented.