TEXAS · WELLS · HOCKLEY COUNTY · MALLET L&C CO. LEASE · API 42-219-36928 · DISTRICT 7B
Mallet L&C Co. #221
Hockley County · Slaughter field · Injection · Vertical
Mallet L&C CO. #221 (API 42-219-36928) is a well in Hockley County operated by Ctoc Energy LLC, completed March 1, 2007 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued July 7, 2006, permitted to 5,182 ft.
It was permitted by Merit Energy Company and has since transferred to Ctoc Energy LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Yates, San Andres, Main San Andres.
Its lease has reported 406K barrels of oil and 810K mcf of gas since November 2005, last reporting volume in August 2026. The lease carries 37 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 52.7K barrels injected in the 12 months reported through December 2025.
Operator of record
Permitted by Merit Energy Company; 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
- (682) 549-7537
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 | Merit Energy CompanyJul 7, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,182
- total depth, ft
- 1
- permits on file
- Jul 7, 2006
- last permit issued
- Mar 1, 2007
- completed
- 406K
- cumulative oil, bbl
- 810K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · NOV 2005 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 1, 2007
- 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.
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 AUG 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 37 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mallet L&C Co. O-11-68851 | Slaughter | Ctoc Energy, LLC | 37 | 406K | 810K | Nov 2005 – Aug 2026 |
Oil, barrels lease total
Last 12 months 2,307 · prior 12 3,651(-37%)
Gas, mcf lease total
Last 12 months 2,696 · prior 12 4,481(-40%)
Wells named Mallet L&C Co.
Ctoc Energy LLC's other wells filed under this lease name in Hockley County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Merit Energy CompanyNov 2005 → Dec 2013
- 2Cross Timbers Energy, LLCJan 2014 → May 2026
- 3Ctoc Energy, LLCJun 2026 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 622111-99 | Drill | Merit Energy Company | Jul 6, 2006 | Jul 7, 2006 | Jul 9, 2006 | 5,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 1, 2007 | Mallet L&C Co. O-11-68851 | Slaughter | Ctoc Energy LLC | Injection | 5,182 |
Formation tops
As filed on W-2/G-1. Subsea from 3,538 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,860 | 678 |
| San Andres | 4,210 | -672 |
| Main San Andres | 5,042 | -1,504 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,043 | 5,094 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,050 | 12.25 | 1,000 S |
| 5.5 | 5,137 | 7.875 | 925 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 | Jun 13, 2023 | Feb 17, 2023 | — |
| 00 | Dec 18, 2007 | Mar 14, 2007 | — |
| 00 | Feb 5, 2007 | Sep 15, 2006 | Yes |
| 00 | Sep 21, 2006 | — | — |
Well logs
2 logs loaded from the RRC's log index, the latest received Feb 6, 2007. Density, Gamma ray, Neutron, Resistivity. 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 |
|---|---|---|---|---|
| Neutron/Density PorosityTHREE DETECTOR LITHO-DENSITY COMPENSATED NEUTRON GAMMA RAYSpans Yates, San Andres, Main San Andres | TIFF | 200 to 5,180 | Feb 6, 2007run Jul 16, 2006 | — |
| ResistivityHIGH RESOLUTION LATEROLOG ARRAY MICRO-CFL GAMMA RAYSpans Yates, San Andres, Main San Andres | TIFF | 2,095 to 5,180 | Feb 6, 2007run Jul 16, 2006 | — |
"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 42-219-36928 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-219-36928 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 52.7K
- bbl, last 12 reported months
- 2.35M
- bbl, all reported
- Dec 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000097033 | H-1 Injection | Active | 1,000 | 1,800 | 4,800–5,150 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 52,710 · prior 12 78,610(-33%)
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/21936928, documented in the API reference.