TEXAS · WELLS · UPTON COUNTY · EMMA LOU UNIT LEASE · API 42-461-40921 · DISTRICT 6E
Emma Lou Unit #9423LH
Upton County · Spraberry (Trend Area) field · Producing · Horizontal
Emma Lou Unit #9423LH (API 42-461-40921) is a horizontal well in Upton County operated by Cog Operating LLC, completed January 8, 2019 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued July 3, 2018, permitted to 8,697 ft.
Completion filings report 9 formation tops, including Yates, Grayburg, San Andres, Spraberry.
Its lease has reported 989K barrels of oil and 5.86M mcf of gas since January 2019, last reporting volume in April 2026. The lease carries 3 wells, so these are lease totals, not this well alone.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 4,568
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | COG Operating LLC |
| Production reports | COG Operating LLCthrough Apr 2026 |
| Latest permit | COG Operating LLCJul 3, 2018 |
- 8,697
- total depth, ft
- 1
- permits on file
- Jul 3, 2018
- last permit issued
- Jan 8, 2019
- completed
- 989K
- cumulative oil, bbl
- 5.86M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2019 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jan 8, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
31.445627, -102.114748 NAD27, as filed
31.445767, -102.115163 WGS84
Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Upton County.
Wells nearby
Every well with a location on file around this one, in any state, nearest first.
Loading the wells nearby…
Texas locations come from drilling permits, so most older Texas wells have none and are not listed.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 3 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Emma Lou Unit O-9-20214 | Spraberry (Trend Area) | COG Operating LLC | 3 | 989K | 5.86M | Jan 2019 – Apr 2026 |
Gas, mcf lease total
Last 12 months 673,426 · prior 12 680,808(-1%)
Oil, barrels lease total
Last 12 months 46,474 · prior 12 59,068(-21%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCJan 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 841919-99 | Drill | COG Operating LLC | Jul 2, 2018 | Jul 3, 2018 | Jul 30, 2018 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jan 8, 2019 | Emma Lou Unit O-9-20214 | Spraberry (Trend Area) | COG Operating LLC | Producing | 8,697 |
Formation tops
As filed on W-2/G-1. Subsea from 2,818 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,591 | 227 |
| Grayburg | 4,561 | -1,743 |
| San AndresSAN ANDRES - SALTWATER FLOW | 4,830 | -2,012 |
| Spraberry | 7,444 | -4,626 |
| Wolfcamp | 8,774 | -5,956 |
| Devonian | — | — |
| Ellenburger | — | — |
| Fusselman | — | — |
| Strawn | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,815 | 19,079 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,636 | 17.5 | 1,075 S |
| 9.625 | 7,948 | 12.25 | 700 S |
| 5.5 | 19,180 | 8.5 | 2,060 S |
Completion filings
W-2 and G-1 reports on record in the RRC wellbore file, newest first. The suffix identifies the wellbore or completion event. The record date is the RRC's own date on the record, not the day the report was filed: 462,034 of the state's filings carry 1984-01-12. About these reports →
| Suffix | RRC record date | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | Jun 5, 2019 | Apr 23, 2019 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Sep 23, 2021. Neutron. These are the logs loaded into Petrora from the Railroad Commission's inventories, not necessarily every log run on the well. The RRC holds the files; each opens from its log search for the well. The kind is the RRC's description of the log; the interval is the one filed for it.
Open the RRC's log search for this well ↗| Logas described | Files | Intervalft, as filed | Datereceived | SizeMB |
|---|---|---|---|---|
| Neutron | TIFF | from 8,652 | Sep 23, 2021 | 8.76 |
The source documents
Petrora holds the structured record. The scanned filings live at the RRC; these links open its search already filled in for this API.
- Wellbore filings for 42-461-40921 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-40921 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its search.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbors, subsea-aligned so they line up regardless of surface terrain.
Emma Lou Unit42-461-40917
0.0 KM · COG Operating LLC · Section with this well →
| Yates | 2,550 | 268 |
| Grayburg | 4,561 | -1,743 |
| San Andres | 4,830 | -2,012 |
| Spraberry | 7,444 | -4,626 |
| Wolfcamp | 8,774 | -5,956 |
| Fusselman | — | |
| Devonian | — | |
| Strawn | — |
9 TOPS · FIRST 8
Emma Lou Unit42-461-40922
0.0 KM · COG Operating LLC · Section with this well →
| Yates | 2,550 | 268 |
| Grayburg | 4,561 | -1,743 |
| San Andres | 4,830 | -2,012 |
| Spraberry | 7,444 | -4,626 |
| Wolfcamp | 8,774 | -5,956 |
| Devonian | — | |
| Ellenburger | — | |
| Fusselman | — |
9 TOPS · FIRST 8
Keizha-Neal 142-461-41651
1.6 KM · Summit Petroleum LLC · Section with this well →
| San Andres | 4,745 | -1,920 |
| Spraberry | 7,325 | -4,500 |
| Wolfcamp | 8,040 | -5,215 |
| Spraberry | 8,040 | -5,215 |
| Wolfcamp | 9,095 | -6,270 |
| Ellenburger | — | |
| Devonian | — | |
| Fusselman | — |
11 TOPS · FIRST 8
Keizha-Neal 242-461-41653
1.6 KM · Summit Petroleum LLC · Section with this well →
| San Andres | 4,725 | -1,900 |
| Spraberry | 7,300 | -4,475 |
| Wolfcamp | 8,625 | -5,800 |
| Wolfcamp | 9,050 | -6,225 |
| Devonian | — | |
| Grayburg | — | |
| Strawn | — | |
| Fusselman | — |
10 TOPS · FIRST 8
Callie 742-461-43442
1.8 KM · Summit Petroleum LLC · Section with this well →
| San Andres | 4,728 | -1,911 |
| Clear Fork | 6,624 | -3,807 |
| Spraberry | 7,446 | -4,629 |
| Yates | — | |
| Wolfcamp | — | |
| Strawn | — | |
| Grayburg | — | |
| Fusselman | — |
10 TOPS · FIRST 8
Callie 642-461-43441
1.8 KM · Summit Petroleum LLC · Section with this well →
| San Andres | 4,728 | -1,886 |
| Clear Fork | 6,638 | -3,796 |
| Spraberry | 7,468 | -4,626 |
| Spraberry | 8,088 | -5,246 |
| Fusselman | — | |
| Devonian | — | |
| Ellenburger | — | |
| Grayburg | — |
11 TOPS · FIRST 8
Callie 542-461-43440
1.8 KM · Summit Petroleum LLC · Section with this well →
| San Andres | 4,743 | -1,926 |
| Clear Fork | 6,648 | -3,831 |
| Spraberry | 7,476 | -4,659 |
| Ellenburger | — | |
| Fusselman | — | |
| Grayburg | — | |
| Strawn | — | |
| Wolfcamp | — |
10 TOPS · FIRST 8
Callie 442-461-43439
1.8 KM · Summit Petroleum LLC · Section with this well →
| San Andres | 4,834 | -1,992 |
| Clear Fork | 6,637 | -3,795 |
| Spraberry | 7,491 | -4,649 |
| Yates | — | |
| Fusselman | — | |
| Ellenburger | — | |
| Devonian | — | |
| Grayburg | — |
10 TOPS · FIRST 8
About this data
Permits from the RRC OGA049M master and daily daf420 files; wellbore and operator of record from the EWA schedule, weekly; completions, formation tops, casing, and perforations from the dbf900 wellbore file; production from PDQ lease reports, which lag two to three months; injection from UIC permits, H-10 reports, and TexNet daily volumes; earthquakes from the TexNet catalog.
New to these records? How to read a well page · API numbers · completion reports and tops · why production is by lease
Developers: this page as JSON is GET /v1/data/wells/46140921, documented in the API reference.