Texas oil lease

Producing

WESTBROOK SOUTHWEST UNIT

Name: WESTBROOK SOUTHWEST UNIT monthly oil and gas production, Mitchell County, Texas
Creator: Texas Railroad Commission

Westbrook Southwest Unit is an oil lease in Mitchell County, Texas, operated by Grayrock Energy II, LLC in the Westbrook field.

352 wells

128,123bbl oil, last 12 months−3% vs prior year

Operator: Grayrock Energy II, LLC
County: Mitchell County
Field: Westbrook
RRC lease: 08-21120

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Where it sits

This county

Mitchell County

Oil in Jul 2026: 9,653 bbl
Reporting since: Jan 2020

Production by month

Oil output fell 3% over the last 12 months

Oil (bars)
Last 12 months

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

Where the gas went

No gas disposition reported for this lease

The operator has not reported where the gas went in the months we hold.

Who has run this lease

The operator changed once, most recently in Jan 2024

Grayrock Energy II, LLC Jan 2024 to now
Rover Petroleum Operating, LLC Jan 2020 to Dec 2023

SourceTexas Railroad Commission Production Data Query, through Jul 2026.

352 wells on this lease

Wells on WESTBROOK SOUTHWEST UNIT
API number	Well no.	Status
42-335-00051	111	Active
42-335-00052	41	Active
42-335-00053	11	Active
42-335-00054	151	Active
42-335-00055	51	Active
42-335-00056	42	Active
42-335-00057	17	Active
42-335-00058	152	Active
42-335-00059	52	Active
42-335-00060	43	Active
42-335-00061	13	Active
42-335-00062	153	Active
42-335-00063	53	Active
42-335-00064	44	Active
42-335-00065	14	Active
42-335-00066	154	Active
42-335-00067	54	Active
42-335-00068	45	Active
42-335-00069	15W	Active
42-335-00070	155	Active
42-335-00071	51W	Active
42-335-00072	46	Active
42-335-00073	16W	Active
42-335-00074	156	Active
42-335-00075	56	Active
42-335-00076	47	Shut-in
42-335-00077	157	Active
42-335-00078	57	Active
42-335-00079	48	Active
42-335-00080	18	Active
42-335-00081	49	Active
42-335-00082	19	Active
42-335-00083	410	Active
42-335-00084	12R	Active
42-335-00085	411	Active
42-335-00086	412	Active
42-335-00087	413	Active
42-335-00088	414	Active
42-335-00089	112	Shut-in
42-335-00090	113	Active
42-335-00091	114	Active
42-335-00147	222	Active
42-335-00222	221W	Active
42-335-00344	101	Active
42-335-00345	102	Active
42-335-00346	103	Active
42-335-00347	104	Active
42-335-00348	105	Active
42-335-00349	106	Active
42-335-00351	108	Active
42-335-00352	1010	Active
42-335-00353	1011	Active
42-335-00354	1012	Active
42-335-00727	241	Active
42-335-00728	191	Active
42-335-00729	192	Active
42-335-00731	194	Active
42-335-00733	211	Active
42-335-00734	212	Active
42-335-00735	213	Active
42-335-00736	231	Active
42-335-00737	232	Shut-in
42-335-00738	233	Shut-in
42-335-00740	201	Active
42-335-00742	202	Active
42-335-00743	203R	Active
42-335-00744	204	Shut-in
42-335-00765	801	Active
42-335-00766	82	Active
42-335-00767	83	Active
42-335-01368	311	Active
42-335-01369	312	Shut-in
42-335-01688	58	Active
42-335-01845	131W	Active
42-335-01867	33	Shut-in
42-335-10077	171	Active
42-335-10303	1013	Active
42-335-10341	172	Active
42-335-30013	193W	Active
42-335-30017	42W	Active
42-335-30021	43W	Active
42-335-30026	231W	Active
42-335-30032	212W	Active
42-335-30033	104W	Active
42-335-30034	152W	Active
42-335-30035	103W	Active
42-335-30116	173	Active
42-335-30117	105W	Shut-in
42-335-30118	192W	Active
42-335-30160	214	Shut-in
42-335-30211	510	Active
42-335-30212	59	Active
42-335-30603	204W	Active
42-335-30604	211W	Active
42-335-30808	174	Active
42-335-30816	202AW	Shut-in
42-335-30817	194W	Shut-in
42-335-30818	195W	Active
42-335-30819	201AW	Active
42-335-30820	213W	Active
42-335-30821	214W	Active
42-335-30822	203AW	Active
42-335-30823	205W	Shut-in
42-335-30824	215W	Active
42-335-31298	175	Active
42-335-31299	415W	Active
42-335-31300	1014W	Shut-in
42-335-31376	216	Shut-in
42-335-31377	1015	Shut-in
42-335-31378	417W	Shut-in
42-335-31379	416	Shut-in
42-335-31380	215	Active
42-335-31381	1017W	Active
42-335-31382	1016W	Active
42-335-31383	110	Active
42-335-31540	418W	Active
42-335-31541	419	Active
42-335-31542	420	Shut-in
42-335-31543	421	Active
42-335-31544	1105W	Active
42-335-31545	1106W	Active
42-335-31546	1018W	Active
42-335-31547	1019W	Active
42-335-31548	1020W	Active
42-335-31549	1021	Active
42-335-32086	423W	Active
42-335-32087	424W	Active
42-335-32088	426W	Active
42-335-32089	1006W	Active
42-335-32091	1906W	Shut-in
42-335-32092	425W	Active
42-335-32093	422W	Shut-in
42-335-32352	205	Active
42-335-32354	114A	Shut-in
42-335-32355	113A	Active
42-335-32356	112A	Active
42-335-32357	111A	Active
42-335-32526	242	Active
42-335-32527	235	Active
42-335-32528	234	Shut-in
42-335-32546	512	Shut-in
42-335-32547	511W	Shut-in
42-335-33094	1JW	Active
42-335-33095	4JW	Shut-in
42-335-33096	2JW	Active
42-335-33097	196	Active
42-335-33098	3JW	Active
42-335-33101	1907	Active
42-335-33481	1509	Active
42-335-33482	1508	Active
42-335-33588	117	Active
42-335-33589	217	Shut-in
42-335-33590	427	Active
42-335-33591	1022	Active
42-335-33593	513	Active
42-335-33632	1303	Active
42-335-33633	1026	Active
42-335-33634	1025	Shut-in
42-335-33635	1023	Shut-in
42-335-33636	1024	Active
42-335-33637	428	Active
42-335-33703	431	Active
42-335-33704	430	Active
42-335-33705	429	Active
42-335-33706	432	Active
42-335-33708	1028	Shut-in
42-335-33709	1027	Active
42-335-33751	435	Active
42-335-33752	434	Active
42-335-33753	433	Active
42-335-33754	1108	Shut-in
42-335-33755	1029	Active
42-335-33756	436	Active
42-335-33757	1030A	Active
42-335-34159	437	Active
42-335-34160	441W	Active
42-335-34161	442W	Shut-in
42-335-34162	84W	Active
42-335-34163	440W	Active
42-335-34164	1032W	Active
42-335-34165	1109	Active
42-335-34166	116	Active
42-335-34167	1031	Active
42-335-34168	438	Active
42-335-34169	439	Active
42-335-34185	115	Active
42-335-34279	5443	Active
42-335-34280	5806	Active
42-335-34281	5808	Shut-in
42-335-34282	5809	Shut-in
42-335-34283	5810	Active
42-335-34284	5811	Active
42-335-34285	805	Active
42-335-34322	119	Shut-in
42-335-34323	5514	Shut-in
42-335-34324	5447	Active
42-335-34325	5446	Shut-in
42-335-34326	5445	Active
42-335-34327	5444	Active
42-335-34328	5122	Shut-in

SourceTexas Railroad Commission Wellbore Query. The first 200 by API number.

Buyers and gatherers

Companies named on the Form P-4, by product
Company	Product	Role	Share%	From	Until
Transoil Marketing, LLC	Oil	Gathers	75	Jan 1, 2024	–
Bml, Inc. B	Oil	Gathers	25	Jan 1, 2024	–
Bml, Inc. B	Oil	Gathers	100	Mar 1, 2021	Jan 1, 2024
Hollyfrontier Ref & Mktg LLC	Oil	Gathers	100	Aug 1, 2018	Mar 1, 2021

SourceRailroad Commission Form P-4 file, Sep 24, 2026 (source).

Who buys my oil Oil price check

3,848 acres on the newest permit

Good to know
The wells on this lease state different acreage
The permits state between 0.03 and 3,848 acres. Use the acres from your own division order for the well you are paid on.
Good to know
427 wells are listed on this lease
Each well can have its own unit. The decimal for one well does not have to equal the decimal for another.
Worth asking
A Rule 37 case is listed
The RRC permit records list a Rule 37 case. This does not establish your royalty share. Ask for the permit and unit plat for your well.

Check your decimal on this lease

Permits for Westbrook Southwest Unit
API number	Well no.	Permit issued	Completed	Acreson the permit	Type
42-335-35657	2019	Mar 10, 2012	Jun 26, 2012	3,848	Vertical
42-335-35658	2020	Mar 10, 2012	Jun 9, 2012	3,848	Vertical
42-335-35643	1045	Feb 21, 2012	Apr 13, 2012	3,848	Vertical
42-335-35644	1120	Feb 21, 2012	May 17, 2012	3,848	Vertical
42-335-35645	537	Feb 21, 2012	Apr 23, 2012	3,848	Vertical
42-335-35641	147	Feb 8, 2012	May 26, 2012	3,848	Vertical
42-335-35642	322	Feb 6, 2012	Apr 10, 2012	3,848	Vertical
42-335-35622	146	Jan 13, 2012	Mar 16, 2012	3,848	Vertical
42-335-35581	535	Jul 26, 2011	Sep 5, 2011	3,848	Vertical
42-335-35582	536	Jul 26, 2011	Sep 7, 2011	3,848	Vertical
42-335-35572	1118	Jul 21, 2011	Aug 26, 2011	3,848	Vertical
42-335-35573	1119	Jul 21, 2011	Sep 3, 2011	3,848	Vertical

SourceRailroad Commission drilling permits, Oct 3, 2026 (source 1, source 2).

Unit decimal checker

Estimate your royalty

36 months, newest first

Ledger for WESTBROOK SOUTHWEST UNIT
Month	Operator	Oil producedbbl	Oil soldbbl	WTI$/bbl	Henry Hub$/MMBtu
Jul 2026Grayrock Energy	Grayrock Energy II, LLC	9,653	9,603	$80.46	$2.89
Jun 2026Grayrock Energy	Grayrock Energy II, LLC	10,366	10,660	$84.81	$3.15
May 2026Grayrock Energy	Grayrock Energy II, LLC	10,972	11,022	$102.13	$2.94
Apr 2026Grayrock Energy	Grayrock Energy II, LLC	10,357	10,332	$100.32	$2.77
Mar 2026Grayrock Energy	Grayrock Energy II, LLC	12,329	11,548	$91.38	$3.04
Feb 2026Grayrock Energy	Grayrock Energy II, LLC	9,715	10,779	$64.51	$3.62
Jan 2026Grayrock Energy	Grayrock Energy II, LLC	9,907	8,999	$60.04	$7.72
Dec 2025Grayrock Energy	Grayrock Energy II, LLC	10,923	11,120	$57.97	$4.26
Nov 2025Grayrock Energy	Grayrock Energy II, LLC	10,970	11,174	$60.06	$3.79
Oct 2025Grayrock Energy	Grayrock Energy II, LLC	11,451	11,737	$60.89	$3.19
Sep 2025Grayrock Energy	Grayrock Energy II, LLC	10,433	10,679	$63.96	$2.97
Aug 2025Grayrock Energy	Grayrock Energy II, LLC	11,047	10,440	$64.86	$2.91
Jul 2025Grayrock Energy	Grayrock Energy II, LLC	11,198	11,080	$68.39	$3.20
Jun 2025Grayrock Energy	Grayrock Energy II, LLC	10,479	10,493	$68.17	$3.02
May 2025Grayrock Energy	Grayrock Energy II, LLC	11,510	10,883	$62.17	$3.12
Apr 2025Grayrock Energy	Grayrock Energy II, LLC	10,588	11,092	$63.54	$3.42
Mar 2025Grayrock Energy	Grayrock Energy II, LLC	10,517	10,542	$68.24	$4.12
Feb 2025Grayrock Energy	Grayrock Energy II, LLC	9,786	9,937	$71.53	$4.19
Jan 2025Grayrock Energy	Grayrock Energy II, LLC	11,032	10,685	$75.74	$4.13
Dec 2024Grayrock Energy	Grayrock Energy II, LLC	11,104	11,476	$70.12	$3.01
Nov 2024Grayrock Energy	Grayrock Energy II, LLC	11,177	11,163	$69.95	$2.12
Oct 2024Grayrock Energy	Grayrock Energy II, LLC	11,408	11,070	$71.99	$2.20
Sep 2024Grayrock Energy	Grayrock Energy II, LLC	11,220	11,421	$70.24	$2.28
Aug 2024Grayrock Energy	Grayrock Energy II, LLC	12,190	12,178	$76.68	$1.99
Jul 2024Grayrock Energy	Grayrock Energy II, LLC	12,080	11,849	$81.80	$2.07
Jun 2024Grayrock Energy	Grayrock Energy II, LLC	11,921	11,859	$79.77	$2.54
May 2024Grayrock Energy	Grayrock Energy II, LLC	11,716	11,979	$80.02	$2.12
Apr 2024Grayrock Energy	Grayrock Energy II, LLC	12,451	12,474	$85.35	$1.60
Mar 2024Grayrock Energy	Grayrock Energy II, LLC	12,431	12,128	$81.28	$1.49
Feb 2024Grayrock Energy	Grayrock Energy II, LLC	11,819	12,371	$77.25	$1.72
Jan 2024Grayrock Energy	Grayrock Energy II, LLC	12,111	11,612	$74.15	$3.18
Dec 2023Rover Petroleum	Rover Petroleum Operating, LLC	12,696	12,685	$71.90	$2.52
Nov 2023Rover Petroleum	Rover Petroleum Operating, LLC	12,933	12,779	$77.69	$2.71
Oct 2023Rover Petroleum	Rover Petroleum Operating, LLC	12,544	13,124	$85.64	$2.98
Sep 2023Rover Petroleum	Rover Petroleum Operating, LLC	12,657	12,145	$89.43	$2.64
Aug 2023Rover Petroleum	Rover Petroleum Operating, LLC	11,462	11,814	$81.39	$2.58

SourceTexas Railroad Commission Production Data Query, through Jul 2026. Prices: EIA, through Aug 2026. Updated Oct 2, 2026.

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