WELL · 42-255-35674 · DISTRICT 2
Turnbull Unit B-C 8H Psa #8H
Karnes County · Eagleville (Eagle Ford-2) field · Producing · Horizontal
Turnbull Unit B-C 8h Psa #8H (API 42-255-35674) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed June 14, 2018 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued October 27, 2017, permitted to 20,000 ft.
Completion filings report 10 formation tops, including Yegua, Queen City, Wilcox, Austin Chalk.
Its lease has reported 299K barrels of oil and 884K mcf of gas since January 2018, last reporting in July 2026.
Operator of record
Houston, TX · P-5 Y, filed Aug 4, 2025 · 3,191 permits on file · (800) 332-9449
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Apr 2026 |
| Latest permit | Marathon Oil EF LLCOct 27, 2017 |
- 20,000
- total depth, ft
- 1
- permits on file
- Oct 27, 2017
- last permit issued
- Jun 14, 2018
- completed
- 299K
- cumulative oil, bbl
- 884K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 14, 2018
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active
Surface location
28.762969, -98.043219
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Karnes 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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Turnbull Unit B-C 8H Psa O-2-11544 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 299K | 884K | Jan 2018 – Jul 2026 |
Oil, barrels lease total
Last 12 months 7,137 · prior 12 8,415(-15%)
Gas, mcf lease total
Last 12 months 21,937 · prior 12 26,709(-18%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJun 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 832129-99 | Drill | Marathon Oil EF LLC | Oct 18, 2017 | Oct 27, 2017 | Apr 2, 2018 | 20,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-2-11544 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 361 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| YeguaYEGUA - DISPOSAL | 3,785 | -3,424 |
| Queen City | 4,747 | -4,386 |
| WilcoxWILCOX - DISPOSAL | 6,209 | -5,848 |
| Austin ChalkAUSTIN CHALK - H2S | 11,577 | -11,216 |
| Eagle FordEAGLE FORD - H2S | 11,680 | -11,319 |
| Carrizo | — | — |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| Reklaw | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,800 | 21,792 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,866 | 12.25 | 1,805 S |
| 5.5 | 21,897 | 8.75 | 3,250 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 | Dec 10, 2018 | Oct 8, 2018 | Yes |
| 00 | Oct 23, 2018 | Sep 19, 2018 | 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 42-255-35674 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-35674 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). 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.
Turnbull Unit B-C 9H Psa42-255-35675
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,574 | -1,214 |
| Queen City | 3,785 | -3,425 |
| Reklaw | 4,452 | -4,092 |
| Carrizo | 4,747 | -4,387 |
| Wilcox | 6,209 | -5,849 |
| Austin Chalk | 11,566 | -11,206 |
| Eagle Ford | 11,672 | -11,312 |
| Frio | — |
10 TOPS · FIRST 8
Turnbull Unit B-C 10H Psa42-255-35676
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Austin Chalk | 1,152 | -792 |
| Yegua | 1,574 | -1,214 |
| Queen City | 3,785 | -3,425 |
| Reklaw | 4,452 | -4,092 |
| Carrizo | 4,747 | -4,387 |
| Wilcox | 6,209 | -5,849 |
| Eagle Ford | 11,672 | -11,312 |
| Frio | — |
10 TOPS · FIRST 8
Turnbull Unit B-C 11H Psa42-255-35678
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,574 | -1,213 |
| Queen City | 3,785 | -3,424 |
| Reklaw | 4,452 | -4,091 |
| Carrizo | 4,747 | -4,386 |
| Wilcox | 6,209 | -5,848 |
| Austin Chalk | 11,535 | -11,174 |
| Eagle Ford | 11,651 | -11,290 |
| Frio | — |
10 TOPS · FIRST 8
Turnbull Unit B-C 12H Psa42-255-35679
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,574 | -1,213 |
| Queen City | 3,785 | -3,424 |
| Reklaw | 4,452 | -4,091 |
| Carrizo | 4,747 | -4,386 |
| Wilcox | 6,209 | -5,848 |
| Austin Chalk | 11,525 | -11,164 |
| Eagle Ford | 11,640 | -11,279 |
| Edwards | — |
10 TOPS · FIRST 8
Turnbull Unit B-C-G 1H Psa42-255-35680
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 1,574 | -1,213 |
| Queen City | 3,785 | -3,424 |
| Reklaw | 4,452 | -4,091 |
| Carrizo | 4,747 | -4,386 |
| Wilcox | 6,209 | -5,848 |
| Austin Chalk | 11,507 | -11,146 |
| Eagle Ford | 11,633 | -11,272 |
| Sligo | — |
10 TOPS · FIRST 8
San Chirstoval42-255-37918
0.3 KM · Burlington Resources O & G Co LP · Section with this well →
| Yegua | 1,531 | -1,168 |
| Queen City | 3,455 | -3,092 |
| Reklaw | 4,388 | -4,025 |
| Carrizo | 4,545 | -4,182 |
| Wilcox | 4,956 | -4,593 |
| Austin Chalk | 11,510 | -11,147 |
| Eagle Ford | 11,640 | -11,277 |
| Frio | — |
10 TOPS · FIRST 8
San Christoval42-255-37919
0.3 KM · Burlington Resources O & G Co LP · Section with this well →
| Yegua | 1,560 | -1,197 |
| Queen City | 3,473 | -3,110 |
| Reklaw | 4,406 | -4,043 |
| Carrizo | 4,550 | -4,187 |
| Wilcox | 4,955 | -4,592 |
| Austin Chalk | 11,515 | -11,152 |
| Eagle Ford | 11,648 | -11,285 |
| Edwards | — |
10 TOPS · FIRST 8
San Christoval42-255-37920
0.4 KM · Burlington Resources O & G Co LP · Section with this well →
| Yegua | 1,540 | -1,176 |
| Queen City | 3,486 | -3,122 |
| Reklaw | 4,428 | -4,064 |
| Carrizo | 4,575 | -4,211 |
| Wilcox | 4,957 | -4,593 |
| Austin Chalk | 11,526 | -11,162 |
| Eagle Ford | 11,664 | -11,300 |
| Frio | — |
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/25535674, documented in the API reference.