TEXAS · WELLS · FREESTONE COUNTY · API 42-161-31266 · DISTRICT 05
Gilliam C No. 1 Gas Unit #4
Freestone County · Freestone (CV-Bossier Cons.) field · Producing · Vertical
Gilliam C NO. 1 Gas Unit #4 (API 42-161-31266) is a well in Freestone County operated by Hilcorp Energy Company, completed December 9, 1994 and listed as producing on the RRC schedule, shut in December 1, 2020.
The RRC has issued one drilling permit, issued August 31, 1994, permitted to 11,920 ft.
It was permitted by Marathon Oil Company and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 7 formation tops, including Buda, Glen Rose, Base Mass. Anhyd, Base Mass. Anhyd..
No lease production has been reported under this well’s leases.
Operator of record
Permitted by Marathon Oil Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,454
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | XTO Energy Inc.through Nov 2020 |
| Latest permit | Marathon Oil CompanyAug 31, 1994 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,920
- total depth, ft
- 1
- permits on file
- Aug 31, 1994
- last permit issued
- Dec 9, 1994
- completed
- 0
- cumulative oil, bbl
- 2.11M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Oct 1994 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 9, 1994
- Shut in
- Dec 1, 2020
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
No coordinates on the permit record yet. The RRC's GIS record usually lands within days of issuance; historical master-file permits never carry one.
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 |
|---|---|---|---|---|---|---|
| Gilliam "C" No. 1 Gas Unit G-5-153467 | Oaks (Travis Peak 8550) | Hilcorp Energy Company | 1 | 0 | 1.82M | Dec 1994 – Jul 2026 |
| Gilliam "C" G-5-153466 | Pine Oak Creek, N. (Bossier) | Marathon Oil Company | 1 | 0 | 294K | Oct 1994 – May 1996 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Marathon Oil CompanyJan 1995 → Apr 2002
- 2XTO Energy Inc.May 2002 → Nov 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 427602-99 | Drill | Marathon Oil Company | Aug 31, 1994 | Aug 31, 1994 | Sep 4, 1994 | 12,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 9, 1994 | Gilliam C No. 1 Gas Unit G-5-153467 | Freestone (CV-Bossier Cons.) | Hilcorp Energy Company | Producing · shut in Dec 1, 2020 | 11,920 |
| Oct 27, 1994 | Gilliam C G-5-153466 | Oaks (Cotton Valley-Travis Peak) | Marathon Oil Company | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 460 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Buda | 4,946 | -4,486 |
| Glen Rose | 6,250 | -5,790 |
| Base Mass. Anhyd | 7,357 | -6,897 |
| Base Mass. Anhyd. | 7,357 | -6,897 |
| Pettit | 8,022 | -7,562 |
| Travis Peak | 8,353 | -7,893 |
| Bossier | 10,950 | -10,490 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,264 | 8,441 | Perforated |
| 10,548 | 10,850 | Perforated |
| 11,348 | 11,760 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 1,561 | 12.25 | 569 S |
| 4.5 | 11,920 | 7.875 | 1,285 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 | Aug 19, 1996 | Jan 29, 1996 | — |
| 00 | Apr 13, 1995 | Feb 13, 1995 | Yes |
| 00 | Apr 3, 1995 | — | — |
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 42-161-31266 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-161-31266 → 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.
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/16131266, documented in the API reference.