EARTHQUAKES · MARTIN AREA · TX2021XOCO

Magnitude 2.0 38 km SSW of Los Ybanez, Texas

Wednesday, December 1, 2021, 6:30:53 PM Central · 2021-12-02 00:30:53 UTC

A magnitude 2.0 earthquake 38 km SSW of Los Ybanez, Texas on December 1, 2021 at 6:30 PM Central, 11.4 km deep, in the Martin County area.

It is one of 226 M2+ events located within 10 km of this spot, 4 of them in the thirty days before it; the largest nearby was M5.1.

15 active injection or disposal wells sit within 10 km, the nearest 0.4 km away and operated by Deep Blue Operating I LLC; together they hold 312,500 barrels a day of permitted capacity.

24 of the nearby wells report daily to TexNet; they injected 124,631 barrels a day in August 2026.

M2.0: ML, reviewed
11.4: km deep · 37,470 ft
4: M2+ within 10 km, prior 30 days
226: M2+ within 10 km, all time
15: active injection wells within 10 km
1,066: permitted wells within 10 km

Location

Epicenter: 32.4179, -102.1214
County area: Martin County
On a map: Google Maps ↗
Catalog: USGS event page ↗ · TexNet catalog ↗

Around it in time and space

M2+ events within 10 km, nearest in time first.

When	Mag	Distance	Depth
Nov 30, 2021, 5:48 PM	2.1	4.5 km	5.6 km
Nov 15, 2021, 6:10 PM	2.0	0.5 km	4.8 km
Nov 6, 2021, 1:50 PM	2.4	1.3 km	7.8 km
Nov 4, 2021, 4:53 PM	2.1	0.9 km	13.1 km
Oct 31, 2021, 6:00 PM	2.1	0.6 km	9.7 km
Oct 24, 2021, 6:29 PM	2.0	2 km	12.3 km
Jan 18, 2022, 4:31 AM	3.0	4.9 km	1.8 km
Jan 24, 2022, 9:24 AM	2.2	1.4 km	4.7 km
Jan 26, 2022, 11:56 PM	2.3	0.6 km	5.6 km
Feb 6, 2022, 12:08 PM	2.3	5.7 km	14.4 km
Sep 24, 2021, 5:56 PM	2.3	0.6 km	8.9 km
Mar 7, 2022, 10:56 AM	2.6	4.2 km	7.6 km

Largest nearby on record: M5.1 on Sep 17, 2024.

Injection wells within 10 km

RRC UIC MASTER · ACTIVE PERMITS

Proximity is not attribution. The wells are listed because the question is always asked; whether any of them is connected to this event is for the RRC's seismic response review, not this page. 24 of these report daily to TexNet: 125K bbl/d in Aug 2026.

Well	Operator	UIC no.	Distance	Permitted, bbl/d	Injection zone, ft
Breedlove Ursa #2D	Deep Blue Operating I LLC	000124651	0.4 km	30,000	3,988–5,308
Corsica SWD 2 #2	Stonehill Martin, LLC	000126090	1.5 km	20,000	4,200–5,228
University "7-15" #1D	Pioneer Natural Res. USA, Inc.	000115442	5 km	25,000	4,500–5,600
Univ. 14-7 #3D	Ovintiv USA Inc.	000018943	5.3 km	7,500	4,525–5,470
University 7-27 SWD #D 2	Deep Blue Operating I LLC	000115339	5.6 km	40,000	12,700–14,200
Golden Tornadoes SWD #1	Deep Blue Operating I LLC	000115975	6.1 km	30,000	12,380–13,965
Breedlove, F. D., -B- #47	Ovintiv USA Inc.	000099895	6.1 km	10,000	11,242–12,617
Capri SWD #2	Stonehill Martin, LLC	000125986	6.3 km	20,000	4,350–5,700
University SWD #D 1	Deep Blue Operating I LLC	000110114	6.4 km	20,000	4,800–5,550
Capri SWD #1	Stonehill Martin, LLC	000118229	6.6 km	30,000	4,500–5,680
Pinotage SWD #1	Deep Blue Operating I LLC	000106281	6.9 km	20,000	5,550–6,175
Breedlove, F. D., -B- #49	Ovintiv USA Inc.	000105121	7.2 km	10,000	11,745–12,675
University -B- #2	Crosstex Services, L.L.C.	000079408	7.3 km	5,000	4,940–6,500
Herding Cats #1D	Deep Blue Operating I LLC	000119003	7.4 km	30,000	12,250–14,500
State of Texas AR #2D	Deep Blue Operating I LLC	000100374	7.6 km	15,000	4,927–5,050

Disposal in Martin County → · How disposal permits and volumes work →

About this data

Event tx2021xoco from the USGS earthquake catalog, located by TexNet (UT Bureau of Economic Geology) and refreshed daily. Nearby wells from the RRC UIC well master and permit coordinates; daily volumes from the TexNet injection reporting tool.

Developers: this page as JSON is GET /v1/data/earthquakes/tx/events/tx2021xoco, documented in the API reference.