ROBERTSON-LASITER UNIT

Name: ROBERTSON-LASITER UNIT lease production and value, Jan 1993 onwards
Creator: Railroad Commission of Texas
License: https://www.rrc.texas.gov/site-policies/

Operated by TEXAS AMERICAN RESOURCES COMPANY (P-5 844344) in the PEARSALL (AUSTIN CHALK) field. Every figure below is a volume the Railroad Commission published, multiplied by a monthly price you can check.

Oil lease lease 13104District 01Field 69981125OilCasinghead gasSave Export

Value, all time

$7.3 M

Jan 1993 – May 2017

Value, last 12 filed months

at the published price for each month

Months reported

293

no gaps in the span

Streams

oil, casinghead gas

The PEARSALL (AUSTIN CHALK) field

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 1,992 leases and 3,388 wells, and the rule below applies to all of them.

Discovered

1936-12-28

as the register files it

Field class

Oil and gas

the register's own label

Between wells

0 ft

minimum

From a lease line

330 ft

minimum

A drilling unit in this field needs at least 80 acres. The field rule took effect on 2025-06-17.

The Commission's schedule remark for this field reads: “LEASE PLAT. PRORATION PLAT IS NOT REQUIRED.”

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	158,657 bbl	$6,930,858
Casinghead gas	Production	131,936 Mcf	$373,418
Total			$7,304,277

58,334 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 28.6627, -99.5536. A lease has no coordinate of its own — that point is the mean of its wells, and they span 0.0 miles.

28.66267, -99.55363 · centre of the wells drawn, derived⌘ or Ctrl + scroll to zoom

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

9,315 ft

1 wells filed one

Completion to plug

26.0 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 9,315 ft.

Completions filed

Feb 1991

1 of 1 wells

Plug dates filed

Feb 2017

1 of 1 wells

Last completion to plug: a median of 26.0 years across the 1 well that filed both dates, with the middle half between 26.0 years and 26.0 years. The gap is the distance between two filed dates. It is not a statement of how long the well produced.

1 well


42-50732392	1	9,315 ft	Feb 1991	Feb 2017	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 (293)

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

293 months


May 2017	0	0	45.37	3.26	$0
Apr 2017	0	0	47.93	3.21	$0
Mar 2017	0	0	46.77	2.98	$0
Feb 2017	0	0	50.45	2.95	$0
Jan 2017	0	0	49.41	3.42	$0
Dec 2016	0	0	48.76	3.72	$0
Nov 2016	0	0	42.49	2.64	$0
Oct 2016	0	0	46.19	3.09	$0
Sep 2016	0	0	41.55	3.10	$0
Aug 2016	0	0	41.44	2.92	$0
Jul 2016	0	0	41.62	2.92	$0
Jun 2016	0	0	45.35	2.69	$0
May 2016	0	0	42.52	1.99	$0
Apr 2016	0	0	36.56	1.99	$0
Mar 2016	0	0	33.01	1.79	$0
Feb 2016	0	0	26.47	2.06	$0
Jan 2016	0	0	27.35	2.36	$0
Dec 2015	0	0	32.36	2.00	$0
Nov 2015	0	0	38.79	2.17	$0
Oct 2015	0	0	43.55	2.43	$0
Sep 2015	0	0	42.99	2.76	$0
Aug 2015	0	0	40.16	2.87	$0
Jul 2015	0	0	48.15	2.95	$0
Jun 2015	0	338	56.15	2.88	$974
May 2015	0	352	55.21	2.96	$1,040
Apr 2015	0	361	49.82	2.71	$977
Mar 2015	0	421	42.89	2.93	$1,236
Feb 2015	0	432	44.66	2.98	$1,286
Jan 2015	0	474	43.43	3.10	$1,470
Dec 2014	0	360	54.69	3.59	$1,293
Nov 2014	0	0	70.46	4.25	$0
Oct 2014	0	0	78.30	3.90	$0
Sep 2014	0	0	86.16	4.05	$0
Aug 2014	0	0	89.39	4.04	$0
Jul 2014	0	11	96.56	4.18	$46
Jun 2014	0	0	98.16	4.74	$0
May 2014	0	0	94.73	4.73	$0
Apr 2014	0	0	95.94	4.81	$0
Mar 2014	5	68	95.89	5.06	$823
Feb 2014	47	8	97.40	6.19	$4,627
Jan 2014	13	0	90.40	4.86	$1,175
Dec 2013	3	0	91.82	4.35	$275
Nov 2013	25	0	88.85	3.74	$2,221
Oct 2013	61	0	97.42	3.78	$5,943
Sep 2013	79	0	104.11	3.72	$8,225
Aug 2013	76	0	104.25	3.52	$7,923
Jul 2013	59	0	102.52	3.72	$6,049
Jun 2013	9	0	94.40	3.93	$850
May 2013	52	0	94.83	4.15	$4,931
Apr 2013	46	92	93.96	4.28	$4,716
Mar 2013	61	133	93.62	3.91	$6,231
Feb 2013	190	155	91.23	3.42	$17,864
Jan 2013	441	75	91.60	3.42	$40,652
Dec 2012	454	128	86.77	3.42	$39,831
Nov 2012	305	358	86.95	3.62	$27,817
Oct 2012	1,344	324	89.38	3.40	$121,228
Sep 2012	1,365	315	94.67	2.92	$130,144
Aug 2012	548	400	92.66	2.91	$51,941
Jul 2012	317	386	85.13	3.02	$28,152
Jun 2012	417	860	79.82	2.52	$35,451
May 2012	278	710	91.61	2.49	$27,234
Apr 2012	329	539	101.65	2.00	$34,519
Mar 2012	133	984	105.05	2.22	$16,158
Feb 2012	126	463	101.10	2.57	$13,929
Jan 2012	149	44	98.09	2.73	$14,736
Dec 2011	30	164	96.87	3.24	$3,437
Nov 2011	82	696	95.72	3.31	$10,154
Oct 2011	84	254	84.98	3.65	$8,065
Sep 2011	127	796	83.62	3.99	$13,792
Aug 2011	142	711	83.40	4.15	$14,793
Jul 2011	282	784	94.14	4.52	$30,089
Jun 2011	129	862	92.90	4.64	$15,984
May 2011	148	913	98.13	4.40	$18,545
Apr 2011	170	653	105.96	4.33	$20,843
Mar 2011	300	702	96.36	4.06	$31,756
Feb 2011	140	664	85.64	4.18	$14,765
Jan 2011	759	862	86.50	4.59	$69,609
Dec 2010	779	713	85.73	4.35	$69,884
Nov 2010	646	766	80.84	3.80	$55,130
Oct 2010	978	562	78.10	3.51	$78,354
Sep 2010	572	732	72.63	3.98	$44,457
Aug 2010	406	834	73.68	4.42	$33,600
Jul 2010	1,072	811	72.55	4.74	$81,615
Jun 2010	391	934	70.36	4.91	$32,097
May 2010	695	769	71.12	4.24	$52,685
Apr 2010	986	754	81.69	4.12	$83,655
Mar 2010	1,053	942	78.39	4.39	$86,679
Feb 2010	675	1,082	73.58	5.44	$55,555
Jan 2010	701	704	74.36	5.96	$56,325
Dec 2009	795	954	71.44	5.48	$62,026
Nov 2009	915	1,362	74.59	3.75	$73,359
Oct 2009	1,371	1,198	72.54	4.11	$104,376
Sep 2009	532	689	65.54	3.06	$36,979
Aug 2009	700	1,034	67.42	3.22	$50,522
Jul 2009	460	726	61.13	3.46	$30,635
Jun 2009	578	594	66.16	3.90	$40,554
May 2009	674	554	54.74	3.93	$39,070
Apr 2009	1,065	523	46.77	3.59	$51,686
Mar 2009	654	456	42.14	4.06	$29,410
Feb 2009	121	411	32.81	4.63	$5,874
Jan 2009	93	486	35.86	5.37	$5,945
Dec 2008	164	656	37.10	5.98	$10,005
Nov 2008	189	501	55.49	6.86	$13,925
Oct 2008	453	594	75.24	6.92	$38,195
Sep 2008	695	682	101.76	7.88	$76,095
Aug 2008	485	594	114.22	8.48	$60,436
Jul 2008	388	522	131.08	11.39	$56,804
Jun 2008	582	566	131.33	13.03	$83,811
May 2008	450	728	123.17	11.57	$63,853
Apr 2008	821	864	110.31	10.45	$99,598
Mar 2008	888	846	101.90	9.66	$98,663
Feb 2008	1,248	784	92.53	8.77	$122,354
Jan 2008	1,421	838	90.38	8.21	$135,306
Dec 2007	3,622	260	88.33	7.30	$321,830
Nov 2007	1,916	122	91.67	7.29	$176,529
Oct 2007	917	19	82.85	6.92	$76,105
Sep 2007	770	170	75.84	6.24	$59,458
Aug 2007	1,090	342	69.06	6.39	$77,460
Jul 2007	820	528	70.90	6.39	$61,511
Jun 2007	1,012	610	62.00	7.55	$67,349
May 2007	1,254	729	58.74	7.85	$79,380
Apr 2007	1,315	838	59.61	7.81	$84,928
Mar 2007	1,201	1,000	56.92	7.30	$75,663
Feb 2007	998	655	55.10	8.22	$60,371
Jan 2007	294	329	50.30	6.73	$17,001
Dec 2006	152	314	56.65	6.92	$10,783
Nov 2006	238	326	54.20	7.62	$15,383
Oct 2006	374	290	54.90	6.01	$22,277
Sep 2006	707	315	60.08	5.04	$44,063
Aug 2006	1,061	88	68.71	7.34	$73,547
Jul 2006	1,697	522	69.37	6.34	$121,032
Jun 2006	2,343	408	66.28	6.38	$157,899
May 2006	1,889	749	66.01	6.42	$129,505
Apr 2006	1,817	981	64.39	7.36	$124,217
Mar 2006	1,163	1,183	56.70	7.08	$74,321
Feb 2006	1,142	330	57.59	7.75	$68,326
Jan 2006	711	304	60.59	8.93	$45,795
Dec 2005	282	389	54.94	13.42	$20,712
Nov 2005	376	502	54.69	10.59	$25,879
Oct 2005	465	357	58.34	13.80	$32,053
Sep 2005	452	224	61.45	12.08	$30,481
Aug 2005	509	120	61.51	9.80	$32,484
Jul 2005	574	203	55.69	7.84	$33,558
Jun 2005	494	272	52.33	7.38	$27,859
May 2005	809	69	45.22	6.65	$37,042
Apr 2005	786	61	49.20	7.36	$39,120
Mar 2005	491	207	50.37	7.15	$26,213
Feb 2005	727	67	45.22	6.31	$33,298
Jan 2005	504	314	43.16	6.32	$23,738
Dec 2004	534	170	39.86	6.75	$22,433
Nov 2004	852	345	45.28	6.33	$40,763
Oct 2004	1,291	282	49.70	6.52	$66,000
Sep 2004	1,695	1,213	43.24	5.28	$79,701
Aug 2004	747	430	42.37	5.55	$34,037
Jul 2004	439	0	38.28	6.08	$16,805
Jun 2004	346	0	36.10	6.43	$12,491
May 2004	186	0	37.48	6.49	$6,971
Apr 2004	319	0	34.47	5.86	$10,996
Mar 2004	162	0	34.36	5.53	$5,566
Feb 2004	230	0	32.45	5.51	$7,464
Jan 2004	89	0	32.03	6.30	$2,851
Dec 2003	291	0	30.26	6.30	$8,806
Nov 2003	217	0	28.80	4.60	$6,250
Oct 2003	161	0	28.17	4.76	$4,535
Sep 2003	326	0	26.31	4.75	$8,577
Aug 2003	236	0	29.76	5.13	$7,023
Jul 2003	245	0	29.41	5.17	$7,205
Jun 2003	378	0	28.56	5.98	$10,796
May 2003	354	0	26.59	5.97	$9,413
Apr 2003	134	0	26.67	5.41	$3,574
Mar 2003	396	0	31.14	6.10	$12,331
Feb 2003	188	0	33.48	7.93	$6,294
Jan 2003	0	0	30.31	5.58	$0
Dec 2002	44	0	26.91	4.85	$1,184
Nov 2002	148	0	24.66	4.14	$3,650
Oct 2002	182	0	26.46	4.23	$4,816
Sep 2002	227	0	27.44	3.64	$6,229
Aug 2002	194	0	25.96	3.16	$5,036
Jul 2002	117	0	24.58	3.06	$2,876
Jun 2002	191	0	23.73	3.34	$4,532
May 2002	162	0	24.66	3.58	$3,995
Apr 2002	220	0	23.65	3.51	$5,203
Mar 2002	291	0	22.00	3.10	$6,402
Feb 2002	258	248	18.22	2.38	$5,290
Jan 2002	255	419	17.17	2.38	$5,374
Dec 2001	37	0	16.93	2.36	$626
Nov 2001	106	20	18.07	2.41	$1,964
Oct 2001	259	94	19.78	2.53	$5,361
Sep 2001	158	89	24.26	2.25	$4,033
Aug 2001	280	95	24.87	3.05	$7,254
Jul 2001	188	37	23.93	3.20	$4,617
Jun 2001	271	90	24.56	3.82	$7,000
May 2001	819	74	25.52	4.31	$21,220
Apr 2001	323	51	24.68	5.34	$8,244
Mar 2001	39	0	24.54	5.38	$957
Feb 2001	163	24	27.75	5.77	$4,662
Jan 2001	461	88	27.47	8.40	$13,403
Dec 2000	413	88	26.88	9.12	$11,904
Nov 2000	550	82	32.21	5.66	$18,179
Oct 2000	305	82	31.23	5.15	$9,947
Sep 2000	295	76	31.87	5.19	$9,796
Aug 2000	317	80	29.64	4.54	$9,759
Jul 2000	414	93	28.53	4.09	$12,192
Jun 2000	384	92	29.30	4.40	$11,656
May 2000	423	90	27.26	3.68	$11,862
Apr 2000	418	256	24.51	3.12	$11,043
Mar 2000	569	400	28.42	2.86	$17,315
Feb 2000	624	410	27.62	2.73	$18,353
Jan 2000	716	443	25.27	2.48	$19,192
Dec 1999	426	476	24.28	2.42	$11,497
Nov 1999	406	402	23.19	2.43	$10,394
Oct 1999	353	295	20.98	2.80	$8,233
Sep 1999	460	478	21.75	2.62	$11,257
Aug 1999	400	497	19.26	2.88	$9,133
Jul 1999	582	277	17.89	2.37	$11,069
Jun 1999	601	208	15.94	2.36	$10,071
May 1999	491	95	15.79	2.32	$7,973
Apr 1999	354	119	15.10	2.21	$5,608
Mar 1999	674	140	12.47	1.84	$8,662
Feb 1999	823	88	9.98	1.82	$8,374
Jan 1999	1,149	72	10.38	1.90	$12,063
Dec 1998	806	72	9.20	1.77	$7,543
Nov 1998	237	0	10.89	2.19	$2,581
Oct 1998	269	72	12.42	1.97	$3,483
Sep 1998	234	89	12.59	2.08	$3,131
Aug 1998	80	8	11.30	1.91	$919
Jul 1998	49	13	11.74	2.24	$604
Jun 1998	208	137	11.24	2.24	$2,644
May 1998	618	261	12.62	2.21	$8,375
Apr 1998	627	308	13.04	2.51	$8,948
Mar 1998	559	431	12.80	2.31	$8,151
Feb 1998	550	392	13.95	2.30	$8,574
Jan 1998	675	467	14.70	2.15	$10,929
Dec 1997	685	586	16.32	2.41	$12,592
Nov 1997	646	578	18.19	3.09	$13,536
Oct 1997	936	752	19.25	3.15	$20,387
Sep 1997	1,030	595	17.74	2.95	$20,030
Aug 1997	1,113	387	17.86	2.55	$20,867
Jul 1997	451	99	17.58	2.25	$8,151
Jun 1997	58	0	17.24	2.26	$1,000
May 1997	279	111	18.97	2.31	$5,549
Apr 1997	560	210	17.88	2.08	$10,450
Mar 1997	697	261	18.95	1.94	$13,714
Feb 1997	622	343	20.49	2.21	$13,501
Jan 1997	791	508	23.48	3.54	$20,371
Dec 1996	745	422	23.32	—	$17,373
Nov 1996	816	580	21.97	—	$17,928
Oct 1996	678	614	23.31	—	$15,804
Sep 1996	672	266	22.22	—	$14,932
Aug 1996	494	169	20.26	—	$10,008
Jul 1996	433	376	19.55	—	$8,465
Jun 1996	631	325	18.73	—	$11,819
May 1996	746	286	19.43	—	$14,495
Apr 1996	474	252	21.51	—	$10,196
Mar 1996	570	435	19.38	—	$11,047
Feb 1996	406	270	16.98	—	$6,894
Jan 1996	374	355	17.07	—	$6,384
Dec 1995	302	297	17.19	—	$5,191
Nov 1995	439	308	16.00	—	$7,024
Oct 1995	288	346	15.43	—	$4,444
Sep 1995	322	308	16.18	—	$5,210
Aug 1995	446	214	15.92	—	$7,100
Jul 1995	266	287	15.24	—	$4,054
Jun 1995	274	262	16.41	—	$4,496
May 1995	89	349	17.56	—	$1,563
Apr 1995	149	460	17.73	—	$2,642
Mar 1995	450	564	16.44	—	$7,398
Feb 1995	379	510	16.58	—	$6,284
Jan 1995	661	652	15.92	—	$10,523
Dec 1994	913	948	15.03	—	$13,722
Nov 1994	923	306	15.90	—	$14,676
Oct 1994	39	16	15.58	—	$608
Sep 1994	445	239	15.29	—	$6,804
Aug 1994	815	792	16.13	—	$13,146
Jul 1994	917	1,099	17.56	—	$16,103
Jun 1994	973	940	17.09	—	$16,629
May 1994	2,075	448	15.88	—	$32,951
Apr 1994	682	557	14.14	—	$9,643
Mar 1994	1,133	1,082	12.46	—	$14,117
Feb 1994	1,390	827	12.50	—	$17,375
Jan 1994	470	471	12.66	—	$5,950
Dec 1993	680	452	12.33	—	$8,384
Nov 1993	1,164	764	14.49	—	$16,866
Oct 1993	1,733	1,730	15.85	—	$27,468
Sep 1993	1,329	1,026	15.03	—	$19,975
Aug 1993	1,748	1,780	15.66	—	$27,374
Jul 1993	1,872	2,749	15.46	—	$28,941
Jun 1993	1,966	4,350	16.79	—	$33,009
May 1993	2,564	5,218	17.68	—	$45,332
Apr 1993	2,553	4,973	18.05	—	$46,082
Mar 1993	3,188	5,995	18.14	—	$57,830
Feb 1993	3,397	5,929	17.90	—	$60,806
Jan 1993	5,455	6,736	16.93	—	$92,353

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 2015 — as filed, then multipliedworked

Oil                    0 bbl  × $ 56.15 =         $0
Casinghead gas       338 Mcf  × $  2.88 =       $974

────────────────────────────────────────────────────
Month total                                     $974

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. 01/O/13104 is the state's own key, not one this site invented.