Petrora

EARTHQUAKES · MIDLAND AREA · TX2021TGNH

Magnitude 2.5 12 km N of Midland, Texas

Friday, October 1, 2021, 5:42:11 PM Central · 2021-10-01 22:42:11 UTC

A magnitude 2.5 earthquake 12 km N of Midland, Texas on October 1, 2021 at 5:42 PM Central, 9.0 km deep, in the Midland County area.

It is one of 112 M2+ events located within 10 km of this spot, 8 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 131,500 barrels a day of permitted capacity.

25 of the nearby wells report daily to TexNet; they injected 87,729 barrels a day in August 2026.

M2.5
ML, reviewed
9.0
km deep · 29,447 ft
8
M2+ within 10 km, prior 30 days
112
M2+ within 10 km, all time
15
active injection wells within 10 km
1,135
permitted wells within 10 km

Location

Epicenter
32.1048, -102.1000
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.

WhenMagDistanceDepth
Oct 1, 2021, 5:38 PM2.70.5 km8.1 km
Sep 25, 2021, 1:17 AM2.96.3 km8.4 km
Sep 20, 2021, 5:14 PM2.50.3 km9.5 km
Sep 19, 2021, 4:54 PM2.20.3 km8.6 km
Sep 8, 2021, 4:10 AM2.66.7 km6.9 km
Sep 7, 2021, 3:19 AM2.30.2 km9.5 km
Sep 6, 2021, 10:05 PM3.76.9 km7.1 km
Sep 3, 2021, 1:22 AM2.40.6 km8.2 km
Aug 28, 2021, 10:29 AM2.25.4 km10.2 km
Nov 11, 2021, 5:08 AM2.75.7 km7.7 km
Nov 16, 2021, 2:36 AM3.55.7 km7.2 km
Nov 16, 2021, 9:25 PM2.75.8 km6.7 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. 25 of these report daily to TexNet: 87.7K bbl/d in Aug 2026.

WellOperatorUIC no.DistancePermitted, bbl/dInjection zone, ft
South Curtis Ranch #1026WDOccidental Permian Ltd.0001096493.2 km10,0004,650–6,000
South Curtis Ranch #404Occidental Permian Ltd.0001080213.3 km10,0004,750–6,100
Glass -J- #2DPioneer Natural Res. USA, Inc.0000642253.8 km5,0004,400–5,800
George W. Glass -24- #1DCivitas Permian Operating, LLC0000892074.3 km1,5004,750–5,200
South Curtis Ranch #1416DOccidental Permian Ltd.0001037664.7 km10,0004,700–5,600
South Curtis Ranch #2130WDOccidental Permian Ltd.0001095304.9 km10,0004,650–5,400
South Curtis Ranch #2820IOccidental Permian Ltd.0001153965.5 km5,0009,193–9,760
South Curtis Ranch #2819IOccidental Permian Ltd.0001153955.6 km5,0009,198–9,773
South Curtis Ranch #2224IOccidental Permian Ltd.0001163045.6 km5,0009,098–9,765
South Curtis Ranch #2817IOccidental Permian Ltd.0001163055.7 km5,0009,295–9,777
Diamond Rio 9 #1DPioneer Natural Res. USA, Inc.0001175145.7 km30,0004,420–7,000
South Curtis Ranch #2223IOccidental Permian Ltd.0001163035.7 km5,0008,999–9,709
South Curtis Ranch #2818IOccidental Permian Ltd.0001153945.8 km5,0009,199–9,761
Synatschk #100SWWinn Operating, LLC0001105045.9 km20,0004,449–5,080
South Curtis Ranch #2221IOccidental Permian Ltd.0001150836 km5,0009,700–15,940

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

About this data

Event tx2021tgnh 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/tx2021tgnh, documented in the API reference.