WELL · 42-371-10961 · DISTRICT 8
Trees Estate -77- #1U
Pecos County · Wolfbone (Trend Area) field · Vertical
Trees Estate -77- #1U (API 42-371-10961) is a plugged well in Pecos County, plugged August 10, 2024, last operated by Swordfish Energy Operating LLC.
The RRC has issued one drilling permit, issued May 15, 2019, permitted to 11,935 ft.
It was permitted by Rosehill Operating Company, LLC and has since transferred to Swordfish Energy Operating LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Rustler, Delaware, Bone Spring, Wolfcamp.
Its 2 leases have reported 648K barrels of oil and 1.04M mcf of gas since January 1993, last reporting in July 2026. The leases carry 7 wells, so these are lease totals, not this well alone.
Operator of record
Swordfish Energy Operating LLC
Permitted by Rosehill Operating Company, LLC; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Sep 4, 2025 · 2 permits on file · (281) 371-9035
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Swordfish Energy Operating LLC |
| Production reports | Swordfish Energy Operating, LLCthrough Mar 2026 |
| Latest permit | Rosehill Operating Company, LLCMay 15, 2019 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,935
- total depth, ft
- 1
- permits on file
- May 15, 2019
- last permit issued
- Mar 1, 1968
- completed
- 648K
- cumulative oil, bbl
- 1.04M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Mar 1, 1968
- Shut in
- —
- Plugged
- Aug 10, 2024
Surface location
31.201219, -102.973142
OpenStreetMap → · Google Maps →
Permit surface location from the RRC GIS record, in Pecos County.
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 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Trees Estate -77- O-10-51721 | Wolfbone (Trend Area) | Swordfish Energy Operating, LLC | 5 | 564K | 659K | Mar 2018 – Jul 2026 |
| Trees Estate -77- O-10-20803 | Athey (Wolfcamp 10900) | Rosehill Operating Company, LLC | 2 | 83.7K | 385K | Jan 1993 – May 2020 |
Oil, barrels lease total
Last 12 months 49,449 · prior 12 40,047(+23%)
Gas, mcf lease total
Last 12 months 130,858 · prior 12 35,993(+264%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Devon Energy Corporation(nevada)Jan 1993 → Mar 2000
- 2Devon Energy Production Co, L.P.Apr 2000 → Jun 2002
- 3Jetta Operating Company, Inc.Jul 2002 → Oct 2016
- 4Whitehorse Delaware OP LLCNov 2016 → Nov 2017
- 5Rosehill Operating Company, LLCDec 2017 → Jul 2021
- 6LRR Pecos Valley, LLCOct 2021 → Nov 2025
- 7Swordfish Energy Operating, LLCDec 2025 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 853020-99 | Field transfer | Rosehill Operating Company, LLC | May 10, 2019 | May 15, 2019 | — | 11,935 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-10-20803 | — | — | — | — |
| — | — O-10-51721 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,613 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Rustler | 1,937 | 676 |
| Delaware | 4,565 | -1,952 |
| Bone SpringBONE SPRINGS | 8,091 | -5,478 |
| Wolfcamp | 8,928 | -6,315 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,243 | 11,626 | Perforated |
| — | 11,263 | Perforated |
| — | 11,365 | Perforated |
| — | 11,626 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 2,145 | 15 | 1,300 S |
| 7.625 | 9,190 | 9.875 | 2,950 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 | Jul 9, 2019 | Jun 3, 2019 | — |
| 00 | Jul 8, 2019 | — | — |
| 00 | Jan 12, 1984 | — | — |
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 42-371-10961 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-371-10961 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbours, subsea-aligned so they line up regardless of surface terrain.
Trees Estate 7742-371-39707
0.3 KM · Rosehill Operating Company, LLC · Section with this well →
| Rustler | 1,937 | 660 |
| Yates | — | |
| Glorieta | — | |
| Grayburg | — | |
| O'Brien | — | |
| Queen | — | |
| Seven Rivers | — | |
| Soma | — |
10 TOPS · FIRST 8
Reed42-371-38263
0.5 KM · Rosehill Operating Company, LLC · Section with this well →
| Lamar | 4,461 | -1,862 |
| Bone Spring | 7,055 | -4,456 |
| Wolfcamp | 10,200 | -7,601 |
| Barnett | 11,584 | -8,985 |
Trees Estate -77-42-371-32667
0.5 KM · Rosehill Operating Company, LLC · Section with this well →
| Rustler | 1,904 | 692 |
| Delaware | 4,485 | -1,889 |
| Cherry Canyon | 5,320 | -2,724 |
| Bone Spring | 7,005 | -4,409 |
| Wolfcamp | 8,958 | -6,362 |
Reed42-371-10818
0.7 KM · Rosehill Operating Company, LLC · Section with this well →
| Rustler | 1,970 | 648 |
| Bell Canyon | 4,440 | -1,822 |
| Bone Spring | 6,995 | -4,377 |
| Wolfcamp | 8,898 | -6,280 |
| Barnett | 11,830 | -9,212 |
Reed, Elizabeth42-371-33395
1.2 KM · Rosehill Operating Company, LLC · Section with this well →
| Bell Canyon | 4,642 | -2,047 |
| Brushy Canyon | 6,323 | -3,728 |
| Bone Spring | 6,889 | -4,294 |
| Wolfcamp | 8,886 | -6,291 |
| Strawn | 11,150 | -8,555 |
| Barnett | 11,714 | -9,119 |
William B. Travis42-371-40371
1.3 KM · Pecos River Exploration, LLC · Section with this well →
| Toborg | 220 | 2,351 |
| Soma | 720 | 1,851 |
| Rustler | 1,220 | 1,351 |
| Seven Rivers | 1,520 | 1,051 |
| Yates | 1,720 | 851 |
| Grayburg | 1,820 | 751 |
| Queen | 2,170 | 401 |
| San Andres | 2,420 | 151 |
10 TOPS · FIRST 8
William B. Travis42-371-40372
1.3 KM · Pecos River Exploration, LLC · Section with this well →
| Toborg | 220 | 2,351 |
| Soma | 720 | 1,851 |
| Rustler | 1,220 | 1,351 |
| Seven Rivers | 1,520 | 1,051 |
| Yates | 1,720 | 851 |
| Grayburg | 1,820 | 751 |
| Queen | 2,170 | 401 |
| San Andres | 2,420 | 151 |
10 TOPS · FIRST 8
Trees Estate 7742-371-39835
1.3 KM · Rosehill Operating Company, LLC · Section with this well →
| Delaware | 4,720 | -2,134 |
| Montoya | — | |
| Clear Fork | — | |
| Wichita-Albany | — | |
| Canyon | — | |
| Waddell | — | |
| Sullivan | — | |
| San Andres | — |
10 TOPS · FIRST 8
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/37110961, documented in the API reference.