WELL · 42-371-10045 · DISTRICT 8
Sibley Effie Potts -B- #1H
Pecos County · Coyanosa (Ellenburger) field · Horizontal
Sibley Effie Potts -B- #1H (API 42-371-10045) is a horizontal well in Pecos County operated by Mobil Producing TX. & N.M. Inc., completed January 6, 1963.
The RRC has issued 2 drilling permits (amended once) between 1997 and 2006, permitted to 16,280 ft.
It was permitted by Encore Operating, L.P. and has since transferred to Mobil Producing TX. & N.M. Inc. on the wellbore schedule.
Completion filings report 5 formation tops, including Wolfcamp, Barnett, Burnett, Mississipppian.
No lease production has been reported under this well’s leases.
Operator of record
Mobil Producing TX. & N.M. Inc.
Permitted by Encore Operating, L.P.; the EWA schedule now lists a different operator.
Spring, TX · P-5 Y, filed May 4, 2026 · 6,763 permits on file · (281) 773-7706
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Mobil Producing TX. & N.M. Inc. |
| Production reports | XTO Energy Inc.through Jan 2026 |
| Latest permit | Encore Operating, L.P.Aug 4, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 16,280
- total depth, ft
- 3
- permits on file
- Aug 4, 2006
- last permit issued
- Jan 6, 1963
- completed
- 0
- cumulative oil, bbl
- 1.88M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Jan 6, 1963
- Shut in
- —
- Plugged
- —
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 4 leases this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Effie Potts Sibley "B" G-10-243260 | Coyanosa (Miss. 10475) | XTO Energy Inc. | 1 | 0 | 1.87M | Aug 2008 – Jul 2026 |
| Sibley, Effie Potts B G-10-170752 | Wildcat | Encore Operating, L.P. | 1 | 0 | 0 | Mar 1998 – Aug 2008 |
| Sibley, Effie Potts -B- G-10-19663 | Coyanosa (Devonian) | Mobil Producing TX. & N.M. Inc. | 1 | 0 | 7.93K | Jan 1993 – Mar 1998 |
| Sibley, Effie Potts -B- G-10-19667 | Coyanosa (Ellenburger) | Mobil Producing TX. & N.M. Inc. | 1 | 0 | 0 | Jan 1993 – Mar 1998 |
Gas, mcf lease total
Last 12 months 36 · prior 12 41(-12%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Mobil Producing TX. & N.M. Inc.Jan 1993 → Dec 2011
- 2Encore Operating, L.P.Aug 2008 → Mar 2009
- 3XTO Energy Inc.Jan 2012 → Jan 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 622400-98 | Recompletion | Encore Operating, L.P. | Apr 1, 2009 | Aug 4, 2006 | Sep 10, 2007 | 15,705 |
| 622400-99 | Recompletion | Encore Operating, L.P. | Jul 11, 2006 | Aug 4, 2006 | Sep 10, 2007 | 15,705 |
| 467331-99 | Recompletion | Mobil Producing TX. & N.M. Inc. | Sep 9, 1997 | Sep 15, 1997 | Dec 1, 1997 | 16,280 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-10-19663 | — | — | — | — |
| — | — G-10-19667 | — | — | — | — |
| — | — G-10-170752 | — | — | — | — |
| — | — G-10-243260 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,680 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Wolfcamp | 9,055 | -6,375 |
| Barnett | 10,833 | -8,153 |
| Burnett | 10,833 | -8,153 |
| Mississipppian | 10,947 | -8,267 |
| Mississippian | 10,949 | -8,269 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,987 | 12,641 | Perforated |
| 10,987 | 12,641 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 20 | 1,885 | — | 2,800 S |
| 13.375 | 9,050 | — | 7,650 S |
| 9.625 | 10,966 | — | 3,165 S |
| 2.375 | 11,685 | — | — |
| 2.375 | 14,986 | — | — |
| 7 | 15,000 | — | 870 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 | May 14, 2009 | Oct 9, 2008 | — |
| 00 | Jan 15, 2009 | Aug 25, 2008 | Yes |
| 00 | Dec 23, 2008 | — | — |
| 00 | Dec 2, 1998 | Nov 5, 1998 | Yes |
| 00 | Nov 16, 1998 | — | — |
| 00 | Jan 12, 1984 | Feb 14, 1963 | — |
| 00 | Jan 12, 1984 | Jan 18, 1963 | — |
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 42-371-10045 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-10045 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/37110045, documented in the API reference.