TEXAS · WELLS · GONZALES COUNTY · TURK-WILLIAMS SA C LEASE · API 42-177-34195 · DISTRICT 01
Turk-Williams SA C #5H
Gonzales County · Eagleville (Eagle Ford-1) field · Producing · Horizontal
Turk-Williams SA C #5H (API 42-177-34195) is a horizontal well in Gonzales County operated by Ensign Natural Resources II LLC, completed April 24, 2020 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued August 30, 2019, permitted to 11,732 ft.
It was permitted by Marathon Oil EF LLC and has since transferred to Ensign Natural Resources II LLC on the wellbore schedule.
Completion filings report 8 formation tops, including Wilcox, Austin Chalk, Eagle Ford, Buda.
Its lease has reported 264K barrels of oil and 379K mcf of gas since October 2019, last reporting volume in April 2026.
Operator of record
Ensign Natural Resources II LLC
Permitted by Marathon Oil EF LLC; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jun 29, 2026
- Permits on file
- 13
- Phone
- (346) 809-4062
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ensign Natural Resources II LLC |
| Production reports | Marathon Oil EF LLCthrough Apr 2026 |
| Latest permit | Marathon Oil EF LLCAug 30, 2019 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,732
- total depth, ft
- 1
- permits on file
- Aug 30, 2019
- last permit issued
- Apr 24, 2020
- completed
- 264K
- cumulative oil, bbl
- 379K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 2020 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 24, 2020
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
29.406650, -97.286083 NAD27, as filed
29.406892, -97.286350 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 Gonzales County.
Wells nearby
Every well with a location on file around this well, in any state, nearest first.
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; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Turk-Williams SA C O-1-19966 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | 1 | 264K | 379K | Oct 2019 – Apr 2026 |
Oil, barrels lease total
Last 12 months 14,153 · prior 12 14,363(-1%)
Gas, mcf lease total
Last 12 months 30,582 · prior 12 28,806(+6%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil EF LLCJan 2020 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 856522-99 | Drill | Marathon Oil EF LLC | Aug 23, 2019 | Aug 30, 2019 | Jan 4, 2020 | 22,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 24, 2020 | Turk-Williams SA C O-1-19966 | Eagleville (Eagle Ford-1) | Ensign Natural Resources II LLC | Producing | 11,732 |
Formation tops
As filed on W-2/G-1. Subsea from 282 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| WilcoxWILCOX - DISPOSAL | 4,019 | -3,737 |
| Austin ChalkAUSTIN CHALK - H2S | 10,667 | -10,385 |
| Eagle FordEAGLE FORD - H2S | 11,243 | -10,961 |
| BudaBUDA - H2S, DISPOSAL | — | — |
| Carrizo | — | — |
| EdwardsEDWARDS - H2S | — | — |
| Navarro | — | — |
| Reklaw | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,373 | 17,668 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 5,018 | 12.25 | 1,472 S |
| 5.5 | 17,776 | 8.75 | 3,168 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 | Jul 8, 2020 | May 21, 2020 | Yes |
| 00 | Apr 2, 2020 | Feb 14, 2020 | Yes |
| 00 | Mar 17, 2020 | Nov 26, 2019 | Yes |
Well logs
2 logs loaded from the RRC's log index, 1 of them with a digital LAS file, the latest received Jan 26, 2023. Gamma ray. 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 |
|---|---|---|---|---|
| Gamma RaySpans Wilcox, Austin Chalk, Eagle Ford | LAS + TIFF | 7,052 to 17,752 | Jan 26, 2023 | 1.88 + 4.47 |
| Gamma RaySpans Wilcox, Austin Chalk, Eagle Ford | TIFF | 7,052 to 17,752 | Sep 26, 2022 | 11.4 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-177-34195 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-177-34195 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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.
Open the cross-section →Turk-Williams SA B42-177-34194
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Wilcox | 4,019 | -3,738 |
| Austin Chalk | 10,670 | -10,389 |
| Eagle Ford | 11,217 | -10,936 |
| Reklaw | — | |
| Carrizo | — | |
| Edwards | — | |
| Navarro | — | |
| Buda | — |
Turk-Williams SA A42-177-34193
0.0 KM · Marathon Oil EF LLC · Section with this well →
| Wilcox | 4,019 | -3,738 |
| Austin Chalk | 10,634 | -10,353 |
| Eagle Ford | 11,208 | -10,927 |
| Buda | — | |
| Reklaw | — | |
| Navarro | — | |
| Edwards | — | |
| Carrizo | — |
Lefevre Unit42-177-34006
2.1 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 3,359 | -3,030 |
| Wilcox | 3,948 | -3,619 |
| Carrizo | 4,048 | -3,719 |
| Navarro | 9,068 | -8,739 |
| Anacacho | 10,870 | -10,541 |
| Austin Chalk | 11,352 | -11,023 |
| Eagle Ford | 11,743 | -11,414 |
| Edwards | — |
9 TOPS · FIRST 8
Lefevre Unit42-177-34007
2.1 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 3,359 | -3,030 |
| Wilcox | 3,948 | -3,619 |
| Carrizo | 4,048 | -3,719 |
| Navarro | 9,068 | -8,739 |
| Anacacho | 10,885 | -10,556 |
| Austin Chalk | 11,361 | -11,032 |
| Eagle Ford | 11,756 | -11,427 |
| Edwards | — |
9 TOPS · FIRST 8
Lefevre Unit42-177-34008
2.1 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 3,359 | -3,030 |
| Wilcox | 3,948 | -3,619 |
| Carrizo | 4,048 | -3,719 |
| Navarro | 9,068 | -8,739 |
| Anacacho | 10,951 | -10,622 |
| Austin Chalk | 11,252 | -10,923 |
| Eagle Ford | 11,771 | -11,442 |
| Edwards | — |
9 TOPS · FIRST 8
Lefevre Unit42-177-34009
2.1 KM · EOG Resources, Inc. · Section with this well →
| Reklaw | 3,359 | -3,030 |
| Wilcox | 3,948 | -3,619 |
| Carrizo | 4,048 | -3,719 |
| Navarro | 9,068 | -8,739 |
| Anacacho | 10,984 | -10,655 |
| Austin Chalk | 11,276 | -10,947 |
| Eagle Ford | 11,810 | -11,481 |
| Buda | — |
9 TOPS · FIRST 8
Bilsky Unit42-177-34389
2.5 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 3,967 | -3,662 |
| Wilcox | 4,527 | -4,222 |
| Austin Chalk | 10,985 | -10,680 |
| Eagle Ford | 11,597 | -11,292 |
| Edwards | — | |
| Carrizo | — | |
| Navarro | — | |
| Buda | — |
Bilsky Unit42-177-34388
2.5 KM · Marathon Oil EF LLC · Section with this well →
| Reklaw | 3,967 | -3,662 |
| Wilcox | 4,527 | -4,222 |
| Austin Chalk | 11,003 | -10,698 |
| Eagle Ford | 11,609 | -11,304 |
| Navarro | — | |
| Edwards | — | |
| Buda | — | |
| Carrizo | — |
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/17734195, documented in the API reference.