WELL · 42-447-35444 · DISTRICT 7
Lambshead D-10 Unit #1D
Throckmorton County · Watt S Spanish Gourd (Miss.) field · Vertical
Lambshead D-10 Unit #1D (API 42-447-35444) is a plugged well in Throckmorton County, plugged September 14, 2010, last operated by Throckmorton Oil Inc..
The RRC has issued 4 drilling permits between 1993 and 2000, permitted to 5,000 ft.
Completion filings report 4 formation tops, including Cook Sand, Strawn, Caddo, Mississippian.
Its 6 leases have reported 25.2K barrels of oil and 63.1K mcf of gas since March 1994, last reporting in October 2010. The leases carry 6 wells, so these are lease totals, not this well alone.
Operator of record
Throckmorton, TX · P-5 Y, filed Dec 3, 2004 · 223 permits on file
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Throckmorton Oil Inc. |
| Production reports | Breck Operating Corp.through May 2009 |
| Latest permit | Throckmorton Oil, Inc.Nov 6, 2000 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 5,000
- total depth, ft
- 4
- permits on file
- Nov 6, 2000
- last permit issued
- Mar 13, 1994
- completed
- 25.2K
- cumulative oil, bbl
- 63.1K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Mar 1994 THROUGH Oct 2010
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 13, 1994
- Shut in
- —
- Plugged
- Sep 14, 2010
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 6 leases this well is completed on; they carry 6 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Lambshead D-10 Unit O-8-29018 | Throckmorton County Regular | Breck Operating Corp. | 1 | 19.8K | 14.4K | Jul 2000 – Oct 2010 |
| Lambshead D-10 O-8-28396 | Big Buffalo (Mississippian) | Throckmorton Oil, Inc. | 1 | 4.87K | 2.89K | Apr 1996 – Mar 2008 |
| Lambshead D-10 G-8-154021 | Big Buffalo (Caddo) | Throckmorton Oil, Inc. | 1 | 0 | 30.4K | Mar 1995 – Mar 1998 |
| Lambshead D-10 Unit O-8-27379 | Big Buffalo (Caddo) | Throckmorton Oil, Inc. | 1 | 101 | 9.91K | Dec 1994 – Jul 1996 |
| Lambshead D-10 Unit O-8-27262 | Watt's Spanish Gourd (Miss.) | Throckmorton Oil, Inc. | 1 | 401 | 185 | Aug 1994 – Mar 1995 |
| Lambshead D-10 Unit G-8-150348 | Watt's Spanish Gourd (Miss.) | Throckmorton Oil, Inc. | 1 | 0 | 5.31K | Mar 1994 – Nov 1994 |
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.
- 1Throckmorton Oil, Inc.Mar 1994 → Dec 2004
- 2Encon Services, Inc.Jan 2005 → Feb 2006
- 3Breck Operating Corp.Mar 2006 → May 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 500711-99 | Recompletion | Throckmorton Oil, Inc. | Oct 12, 2000 | Nov 6, 2000 | May 27, 2000 | 4,570 |
| 454683-99 | Recompletion | Throckmorton Oil, Inc. | Nov 4, 1996 | Dec 3, 1996 | Apr 17, 1996 | 5,000 |
| 431186-99 | Recompletion | Throckmorton Oil, Inc. | Dec 21, 1994 | Dec 28, 1994 | Dec 7, 1994 | 5,000 |
| 419463-99 | Drill | Throckmorton Oil, Inc. | Dec 17, 1993 | Dec 17, 1993 | Jan 18, 1994 | 5,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-8-150348 | — | — | — | — |
| — | — G-8-154021 | — | — | — | — |
| — | — O-8-27262 | — | — | — | — |
| — | — O-8-27379 | — | — | — | — |
| — | — O-8-28396 | — | — | — | — |
| — | — O-8-29018 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,248 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Cook Sand | 860 | 388 |
| StrawnSTRAWN SAND | 3,170 | -1,922 |
| CaddoCADDO LIME | 4,120 | -2,872 |
| MississippianMISSISSIPPI LIME | 4,520 | -3,272 |
| Mississippian | 4,525 | -3,277 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 3,174 | 3,180 | Perforated |
| 4,336 | 4,342 | Perforated |
| 4,344 | 4,352 | Perforated |
| 4,525 | 4,570 | Perforated |
| 4,552 | 4,556 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 639 | 12.25 | 361 S |
| 5.5 | 3,285 | 7.875 | 125 S |
| 5.5 | 4,570 | 7.875 | 101 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 | Oct 19, 2001 | Aug 4, 2000 | Yes |
| 00 | Sep 14, 2001 | — | — |
| 00 | Apr 27, 1998 | Jul 1, 1996 | Yes |
| 00 | Mar 3, 1998 | — | — |
| 00 | Jun 20, 1995 | May 19, 1995 | — |
| 00 | May 30, 1995 | — | — |
| 00 | Mar 10, 1995 | Dec 21, 1994 | — |
| 00 | Jan 3, 1995 | Aug 24, 1994 | — |
| 00 | Oct 17, 1994 | Aug 24, 1994 | — |
| 00 | Sep 19, 1994 | Apr 13, 1994 | Yes |
| 00 | Sep 7, 1994 | — | — |
| 00 | Aug 8, 1994 | — | 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 42-447-35444 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-447-35444 → 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/44735444, documented in the API reference.