EARTHQUAKES · WILSON AREA · TX2018OYLD
Magnitude 2.1 15 km S of Nixon, Texas
Wednesday, August 1, 2018, 9:23:59 AM Central · 2018-08-01 14:23:59 UTC
A magnitude 2.1 earthquake 15 km S of Nixon, Texas on August 1, 2018 at 9:23 AM Central, 2.6 km deep, in the Wilson County area.
It is one of 100 M2+ events located within 10 km of this spot, none in the thirty days before it; the largest nearby was M4.6.
8 active injection or disposal wells sit within 10 km, the nearest 0.3 km away and operated by Evx Operating LLC; together they hold 180,000 barrels a day of permitted capacity.
5 of the nearby wells report daily to TexNet; they injected 51,974 barrels a day in August 2026.
- M2.1
- ML, reviewed
- 2.6
- km deep · 8,584 ft
- 0
- M2+ within 10 km, prior 30 days
- 100
- M2+ within 10 km, all time
- 8
- active injection wells within 10 km
- 484
- permitted wells within 10 km
Location
- Epicenter
- 29.1310, -97.7950
- County area
- Wilson 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 |
|---|---|---|---|
| Aug 2, 2018, 3:20 PM | 2.6 | 4.5 km | 5.0 km |
| Aug 15, 2018, 11:20 PM | 2.1 | 9 km | 5.2 km |
| Aug 23, 2018, 11:27 PM | 2.0 | 9 km | 2.8 km |
| Jun 13, 2018, 11:02 AM | 2.1 | 8.9 km | 1.8 km |
| Jun 13, 2018, 10:18 AM | 2.5 | 8.7 km | 2.8 km |
| May 20, 2018, 12:41 PM | 2.4 | 4 km | 5.0 km |
| Apr 29, 2018, 11:59 AM | 2.7 | 7.1 km | 5.0 km |
| Mar 13, 2018, 3:35 AM | 2.6 | 3.9 km | 5.0 km |
| Mar 12, 2018, 9:16 AM | 2.0 | 4.2 km | 2.4 km |
| Mar 12, 2018, 4:44 AM | 2.7 | 4 km | 2.2 km |
| Mar 11, 2019, 3:16 AM | 2.0 | 8.8 km | 8.5 km |
| Mar 17, 2019, 9:32 PM | 2.5 | 9.6 km | 8.5 km |
Largest nearby on record: M4.6 on Jan 30, 2025.
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. 5 of these report daily to TexNet: 52K bbl/d in Aug 2026.
| Well | Operator | UIC no. | Distance | Permitted, bbl/d | Injection zone, ft |
|---|---|---|---|---|---|
| Gillett SWD #1 | Evx Operating LLC | 000105169 | 0.3 km | 20,000 | 8,950–11,950 |
| Kerlick #1 | Evx Operating LLC | 000104506 | 1.9 km | 17,500 | 5,695–5,710 |
| Lamza SWD #1 | CWR Management LLC | 000103533 | 4.7 km | 25,000 | 5,000–8,000 |
| Brooks #1 | Evx Operating LLC | 000113472 | 7.3 km | 25,000 | 8,200–9,100 |
| Karnes SWD #1 | Crosstex Environmental STX, LLC | 000101718 | 7.6 km | 40,000 | 5,400–7,100 |
| Karnes SWD #1 | Pilot Water Solutions SWD LLC | 000104027 | 8.3 km | 25,000 | 5,400–7,100 |
| Wilke SWD #1 | Mid River Midstream LLC | 000076501 | 8.3 km | 7,500 | 5,000–5,484 |
| J. P. Wright #1 | Evx Operating LLC | 000109247 | 10 km | 20,000 | 5,500–7,200 |
Disposal in Wilson County → · How disposal permits and volumes work →
About this data
Event tx2018oyld 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/tx2018oyld, documented in the API reference.