WELL · 42-255-35676 · DISTRICT 2
Turnbull Unit B-C 10H Psa #10H
Karnes County · Eagleville (Eagle Ford-2) field · Horizontal
Turnbull Unit B-C 10h Psa #10H (API 42-255-35676) is a horizontal well in Karnes County operated by Marathon Oil EF LLC, completed June 14, 2018.
The RRC has issued one drilling permit (amended once), issued October 27, 2017, permitted to 20,000 ft.
Completion filings report 10 formation tops, including Austin Chalk, Yegua, Queen City, Reklaw.
Its 2 leases have reported 865 barrels of oil and 679K mcf of gas since June 2018, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
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 Mar 2025 |
| Latest permit | Marathon Oil EF LLCOct 27, 2017 |
- 20,000
- total depth, ft
- 2
- permits on file
- Oct 27, 2017
- last permit issued
- Jun 14, 2018
- completed
- 865
- cumulative oil, bbl
- 679K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jun 2018 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jun 14, 2018
- Shut in
- —
- Plugged
- —
Surface location
28.762975, -98.043408
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 2 leases 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 |
|---|---|---|---|---|---|---|
| Turnbull Unit B-C 10H Psa G-2-294893 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 0 | 676K | Jun 2018 – Jul 2026 |
| Turnbull Unit B-C 10H Psa O-2-11566 | Eagleville (Eagle Ford-2) | Marathon Oil EF LLC | 1 | 865 | 2.99K | Jun 2018 – Oct 2023 |
Gas, mcf lease total
Last 12 months 0 · prior 12 12,800(-100%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJun 2018 → Mar 2025
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 832132-98 | Drill | Marathon Oil EF LLC | Mar 21, 2018 | Oct 27, 2017 | Nov 26, 2017 | 20,000 |
| 832132-99 | Drill | Marathon Oil EF LLC | Oct 18, 2017 | Oct 27, 2017 | Nov 26, 2017 | 20,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-2-294893 | — | — | — | — |
| — | — O-2-11566 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 360 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin ChalkAUSTIN CHALK - H2S | 1,152 | -792 |
| YeguaYEGUA - DISPOSAL | 1,574 | -1,214 |
| Queen City | 3,785 | -3,425 |
| Reklaw | 4,452 | -4,092 |
| Carrizo | 4,747 | -4,387 |
| WilcoxWILCOX - DISPOSAL | 6,209 | -5,849 |
| Austin ChalkAUSTIN CHALK - H2S | 11,520 | -11,160 |
| Eagle FordEAGLE FORD - H2S | 11,672 | -11,312 |
| EdwardsEDWARDS - H2S | — | — |
| FrioFRIO - DISPOSAL | — | — |
| SligoSLIGO - H2S | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,805 | 20,213 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,868 | 12.25 | 1,805 S |
| 5.5 | 20,319 | 8.75 | 2,945 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 | Jun 29, 2023 | Jun 7, 2023 | Yes |
| 00 | Nov 7, 2018 | Jul 22, 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 42-255-35676 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-255-35676 → 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 |
| Sligo | — |
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 |
| Sligo | — |
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 |
| Frio | — |
10 TOPS · FIRST 8
Turnbull Unit B-C 8H Psa42-255-35674
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Yegua | 3,785 | -3,424 |
| Queen City | 4,747 | -4,386 |
| Wilcox | 6,209 | -5,848 |
| Austin Chalk | 11,577 | -11,216 |
| Eagle Ford | 11,680 | -11,319 |
| Sligo | — | |
| Reklaw | — | |
| Frio | — |
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
0.4 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
0.4 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/25535676, documented in the API reference.