EARTHQUAKES · MIDLAND AREA · TX2021OGYY

Magnitude 2.8 11 km N of Midland, Texas

Thursday, July 22, 2021, 7:54:50 PM Central · 2021-07-23 00:54:50 UTC

A magnitude 2.8 earthquake 11 km N of Midland, Texas on July 22, 2021 at 7:54 PM Central, 8.8 km deep, in the Midland County area.

It is one of 107 M2+ events located within 10 km of this spot, 4 of them in the thirty days before it; the largest nearby was M3.7.

15 active injection or disposal wells sit within 10 km, the nearest 3.2 km away and operated by Occidental Permian Ltd.; together they hold 152,500 barrels a day of permitted capacity.

23 of the nearby wells report daily to TexNet; they injected 61,222 barrels a day in September 2026.

M2.8: ML, reviewed
8.8: km deep · 28,805 ft
4: M2+ within 10 km, prior 30 days
107: M2+ within 10 km, all time
15: active injection wells within 10 km
1,136: permitted wells within 10 km

Location

Epicenter: 32.1030, -102.0957
County area: Midland 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
Jul 20, 2021, 1:40 AM	2.1	7.1 km	7.8 km
Jul 13, 2021, 12:13 AM	2.0	1.2 km	7.8 km
Jul 12, 2021, 8:48 AM	2.7	3.3 km	7.8 km
Aug 4, 2021, 12:00 AM	2.7	0.6 km	9.8 km
Aug 4, 2021, 8:37 PM	2.0	0.5 km	9.0 km
Aug 5, 2021, 1:30 AM	2.7	0.7 km	9.5 km
Aug 8, 2021, 8:20 AM	2.0	5.9 km	7.2 km
Jul 4, 2021, 12:29 AM	2.0	4.9 km	6.5 km
Aug 14, 2021, 3:14 AM	2.7	5.6 km	6.8 km
Aug 16, 2021, 4:25 AM	2.8	7.3 km	7.8 km
Aug 28, 2021, 10:29 AM	2.2	5.8 km	10.2 km
Jun 14, 2021, 7:44 AM	2.0	7.5 km	7.4 km

Largest nearby on record: M3.7 on Sep 7, 2021.

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. 23 of these report daily to TexNet: 61.2K bbl/d in Sep 2026.

Well	Operator	UIC no.	Distance	Permitted, bbl/d	Injection zone, ft
South Curtis Ranch #1026WD	Occidental Permian Ltd.	000109649	3.2 km	10,000	4,650–6,000
South Curtis Ranch #404	Occidental Permian Ltd.	000108021	3.6 km	10,000	4,750–6,100
Glass -J- #2D	Pioneer Natural Res. USA, Inc.	000064225	3.9 km	5,000	4,400–5,800
George W. Glass -24- #1D	Civitas Permian Operating, LLC	000089207	4.6 km	1,500	4,750–5,200
South Curtis Ranch #1416D	Occidental Permian Ltd.	000103766	5.1 km	10,000	4,700–5,600
South Curtis Ranch #2130WD	Occidental Permian Ltd.	000109530	5.4 km	10,000	4,650–5,400
Synatschk #100SW	Winn Operating, LLC	000110504	5.5 km	20,000	4,449–5,080
Diamond Rio 9 #1D	Pioneer Natural Res. USA, Inc.	000117514	5.7 km	30,000	4,420–7,000
South Curtis Ranch #2820I	Occidental Permian Ltd.	000115396	5.9 km	5,000	9,193–9,760
South Curtis Ranch #2224I	Occidental Permian Ltd.	000116304	6 km	5,000	9,098–9,765
South Curtis Ranch #2819I	Occidental Permian Ltd.	000115395	6 km	5,000	9,198–9,773
Alex 17 #1D	Pioneer Natural Res. USA, Inc.	000116241	6.1 km	25,000	4,564–5,764
Glass -E- #1D	Pioneer Natural Res. USA, Inc.	000050386	6.1 km	6,000	4,000–5,500
South Curtis Ranch #2817I	Occidental Permian Ltd.	000116305	6.1 km	5,000	9,295–9,777
South Curtis Ranch #2223I	Occidental Permian Ltd.	000116303	6.1 km	5,000	8,999–9,709

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

About this data

Event tx2021ogyy 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/tx2021ogyy, documented in the API reference.