TEXAS · WELLS · COCHRAN COUNTY · DUGGAN SLAUGHTER UNIT LEASE · API 42-079-31284 · DISTRICT 7B
Duggan Slaughter Unit #1A-81
Cochran County · Slaughter field · Injection · Vertical
Duggan Slaughter Unit #1A-81 (API 42-079-31284) is a well in Cochran County operated by Ctoc Energy LLC, completed November 21, 1995 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued September 29, 1980, permitted to 5,117 ft.
It was permitted by Gulf Oil Corp. and has since transferred to Ctoc Energy LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Rustler, Yates, San Andres.
Its lease has reported 4.66M barrels of oil and 1.55M mcf of gas since January 1993, last reporting in July 2026. The lease carries 260 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 64.7K barrels injected in the 12 months reported through December 2025.
Operator of record
Permitted by Gulf Oil Corp.; the EWA schedule now lists a different operator.
- Based in
- Fort Worth, TX
- P-5 status
- Active (A)
- P-5 last filed
- Apr 24, 2026
- Phone
- (817) 334-7804
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Ctoc Energy LLC |
| Production reports | Cross Timbers Energy, LLCthrough Apr 2026 |
| Latest permit | Gulf Oil Corp.Sep 29, 1980 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,117
- total depth, ft
- 1
- permits on file
- Sep 29, 1980
- last permit issued
- Nov 21, 1995
- completed
- 4.66M
- cumulative oil, bbl
- 1.55M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 21, 1995
- Shut in
- —
- 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 lease this well is completed on; they carry 260 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Duggan Slaughter Unit O-11-17616 | Slaughter | Cross Timbers Energy, LLC | 260 | 4.66M | 1.55M | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 40,240 · prior 12 38,120(+6%)
Gas, mcf lease total
Last 12 months 9,768 · prior 12 20,813(-53%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pennzoil Petroleum CompanyJan 1993 → Jan 1995
- 2Pennzoil Exploration & Prod. Co.Feb 1995 → Feb 1999
- 3Pennzenergy Exp. & Prod., L.L.C.Mar 1999 → Mar 2000
- 4Devon Energy Production Co, L.P.Apr 2000 → Jun 2002
- 5Merit Energy CompanyJul 2002 → Dec 2013
- 6Cross Timbers Energy, LLCJan 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 94012-99 | Drill | Gulf Oil Corp. | Sep 29, 1980 | Sep 29, 1980 | — | 5,100 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 21, 1995 | Duggan Slaughter Unit O-11-17616 | Slaughter | Ctoc Energy LLC | Injection | 5,117 |
| Jan 8, 1981 | Duggan Slaughter Unit O-11-17616 | Slaughter | Ctoc Energy LLC | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Subsea from 3,663 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 2,235 | 1,428 |
| Yates | 2,882 | 781 |
| San Andres | 4,161 | -498 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,953 | 4,977 | Perforated |
| 4,953 | 5,021 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 471 | 12.25 | 300 S |
| 8.625 | 471 | — | 300 S |
| 5.5 | 5,099 | 7.875 | 1,000 S |
| 5.5 | 5,116 | 7.875 | 1,000 S |
| 5.5 | 5,116 | — | 1,000 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 19, 2022 | Jul 25, 2022 | — |
| 00 | May 16, 1996 | Dec 22, 1995 | — |
| 00 | Jan 12, 1984 | Mar 14, 1983 | — |
| 00 | Jan 12, 1984 | Feb 9, 1981 | — |
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 42-079-31284 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-079-31284 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 64.7K
- bbl, last 12 reported months
- 2.64M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000077077 | H-1 Injection | Active | 600 | 2,200 | 4,210–5,100 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 64,737 · prior 12 28,654(+126%)
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/07931284, documented in the API reference.