WELL · 42-135-43671 · DISTRICT 8
Ratliff a 28 East HZ Unit #2802AH
Ector County · Spraberry (Trend Area) field · Producing · Horizontal
Ratliff A 28 East HZ Unit #2802AH (API 42-135-43671) is a horizontal well in Ector County operated by Cog Operating LLC, completed September 23, 2019 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 5, 2019, permitted to 10,500 ft.
Completion filings report 10 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.
Its lease has reported 884K barrels of oil and 1.92M mcf of gas since September 2019, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Midland, TX · P-5 Y, filed May 4, 2026 · 4,568 permits on file · (432) 853-2355
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 LLCMar 5, 2019 |
- 10,500
- total depth, ft
- 1
- permits on file
- Mar 5, 2019
- last permit issued
- Sep 23, 2019
- completed
- 884K
- cumulative oil, bbl
- 1.92M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Sep 2019 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Sep 23, 2019
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: X
Surface location
31.990697, -102.314245
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Ector County.
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Ratliff a 28 East HZ Unit O-10-53594 | Spraberry (Trend Area) | COG Operating LLC | 2 | 884K | 1.92M | Sep 2019 – Jul 2026 |
Oil, barrels lease total
Last 12 months 64,973 · prior 12 86,297(-25%)
Gas, mcf lease total
Last 12 months 364,743 · prior 12 292,203(+25%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1COG Operating LLCSep 2019 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 850168-99 | Drill | COG Operating LLC | Feb 19, 2019 | Mar 5, 2019 | Apr 2, 2019 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-53594 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,942 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa RosaSANTA ROSA BASE | 1,073 | 1,869 |
| Yates | 3,101 | -159 |
| Seven Rivers | 3,329 | -387 |
| Queen | 3,982 | -1,040 |
| Grayburg | 4,405 | -1,463 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 5,090 | -2,148 |
| Glorieta | 5,587 | -2,645 |
| Holt | 5,601 | -2,659 |
| Tubb | 6,102 | -3,160 |
| Clear ForkCLEARFORK | 7,385 | -4,443 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,578 | 22,840 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,747 | 17.5 | 1,500 S |
| 9.625 | 8,714 | 12.25 | 2,800 S |
| 5.5 | 22,982 | 8.5 | 2,950 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. About these reports →
| Suffix | Filed | W-2 / G-1 date | Logs referenced |
|---|---|---|---|
| 00 | May 26, 2020 | Feb 21, 2020 | Yes |
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 42-135-43671 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-135-43671 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their 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 neighbours, subsea-aligned so they line up regardless of surface terrain.
Ratliff a 28 East HZ Unit42-135-43670
0.0 KM · COG Operating LLC · Section with this well →
| Santa Rosa | 1,065 | 1,876 |
| Yates | 3,096 | -155 |
| Seven Rivers | 3,327 | -386 |
| Queen | 3,982 | -1,041 |
| Grayburg | 4,404 | -1,463 |
| San Andres | 5,093 | -2,152 |
| Glorieta | 5,572 | -2,631 |
| Holt | 5,600 | -2,659 |
10 TOPS · FIRST 8
Ratliff a 2109AH42-135-43744
1.0 KM · COG Operating LLC · Section with this well →
| Santa Rosa | 1,091 | 1,861 |
| Yates | 3,094 | -142 |
| Seven Rivers | 3,435 | -483 |
| Queen | 3,971 | -1,019 |
| Grayburg | 4,399 | -1,447 |
| San Andres | 5,027 | -2,075 |
| Glorieta | 5,528 | -2,576 |
| Clear Fork | 7,328 | -4,376 |
10 TOPS · FIRST 8
Ratliff JGA142-135-43945
1.8 KM · COG Operating LLC · Section with this well →
| Santa Rosa | 1,413 | 1,566 |
| Yates | 3,466 | -487 |
| Seven Rivers | 4,436 | -1,457 |
| Queen | 5,173 | -2,194 |
| Grayburg | 5,203 | -2,224 |
| San Andres | 5,403 | -2,424 |
| Holt | 7,003 | -4,024 |
| Glorieta | 7,503 | -4,524 |
10 TOPS · FIRST 8
Whittenburg42-135-43833
1.9 KM · Earthstone Operating, LLC · Section with this well →
| Santa Rosa | 1,389 | 1,601 |
| Yates | 3,114 | -124 |
| Seven Rivers | 3,471 | -481 |
| Queen | 4,201 | -1,211 |
| Grayburg | 4,885 | -1,895 |
| San Andres | 4,885 | -1,895 |
| Glorieta | 6,255 | -3,265 |
| Clear Fork | 7,464 | -4,474 |
20 TOPS · FIRST 8
Whittenburg42-135-43831
1.9 KM · Earthstone Operating, LLC · Section with this well →
| Santa Rosa | 1,392 | 1,598 |
| Rustler | 1,954 | 1,036 |
| Yates | 3,109 | -119 |
| Seven Rivers | 3,467 | -477 |
| Queen | 4,204 | -1,214 |
| San Andres | 4,894 | -1,904 |
| Grayburg | 4,894 | -1,904 |
| Glorieta | 6,247 | -3,257 |
10 TOPS · FIRST 8
Whittenburg42-135-43836
2.0 KM · Earthstone Operating, LLC · Section with this well →
| Santa Rosa | 1,392 | 1,598 |
| Yates | 3,135 | -145 |
| Seven Rivers | 3,376 | -386 |
| Queen | 3,800 | -810 |
| Grayburg | 4,100 | -1,110 |
| San Andres | 4,440 | -1,450 |
| San Andres | 4,440 | -1,450 |
| Glorieta | 6,210 | -3,220 |
12 TOPS · FIRST 8
Whittenburg42-135-43832
2.0 KM · Earthstone Operating, LLC · Section with this well →
| Santa Rosa | 1,385 | 1,605 |
| Yates | 3,113 | -123 |
| Seven Rivers | 3,463 | -473 |
| Queen | 4,204 | -1,214 |
| San Andres | 4,882 | -1,892 |
| Grayburg | 4,882 | -1,892 |
| Glorieta | 6,254 | -3,264 |
| Clear Fork | 7,465 | -4,475 |
19 TOPS · FIRST 8
Whittenburg42-135-43834
2.0 KM · Earthstone Operating, LLC · Section with this well →
| Santa Rosa | 1,392 | 1,598 |
| Yates | 3,135 | -145 |
| Seven Rivers | 3,376 | -386 |
| Queen | 3,800 | -810 |
| Grayburg | 4,100 | -1,110 |
| San Andres | 4,440 | -1,450 |
| San Andres | 4,440 | -1,450 |
| Glorieta | 6,210 | -3,220 |
12 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/13543671, documented in the API reference.