TEXAS · WELLS · REEVES COUNTY · THE SPHINX LEASE · API 42-389-35874 · DISTRICT 7B
The Sphinx #703H
Reeves County · Wolfbone (Trend Area) field · Producing · Horizontal
The Sphinx #703H (API 42-389-35874) is a horizontal well in Reeves County operated by U.S. Energy Development Corp, completed November 22, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued April 17, 2017, permitted to 10,726 ft.
It was permitted by Cog Operating LLC and has since transferred to U.S. Energy Development Corp on the wellbore schedule.
Completion filings report 8 formation tops, including Delaware, Castile, Bell Canyon, Cherry Canyon.
Its lease has reported 3.44M barrels of oil and 14.3M mcf of gas since November 2017, last reporting volume in August 2026. The lease carries 8 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by COG Operating LLC; the EWA schedule now lists a different operator.
- Based in
- Fort Worth, TX
- P-5 status
- Active (A)
- P-5 last filed
- Feb 18, 2026
- Permits on file
- 225
- Phone
- (682) 305-2868
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | U.S. Energy Development Corp |
| Production reports | U.S. Energy Development Corpthrough Aug 2026 |
| Latest permit | COG Operating LLCApr 17, 2017 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,726
- total depth, ft
- 1
- permits on file
- Apr 17, 2017
- last permit issued
- Nov 22, 2017
- completed
- 3.44M
- cumulative oil, bbl
- 14.3M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · NOV 2017 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Nov 22, 2017
- 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 8 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| The Sphinx O-10-49497 | Wolfbone (Trend Area) | U.S. Energy Development Corp | 8 | 3.44M | 14.3M | Nov 2017 – Aug 2026 |
Gas, mcf lease total
Last 12 months 995,130 · prior 12 1,316,841(-24%)
Oil, barrels lease total
Last 12 months 108,413 · prior 12 146,802(-26%)
Wells named The Sphinx
U.S. Energy Development Corp's other wells filed under this lease name in Reeves 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.
- 1COG Operating LLCNov 2017 → Mar 2025
- 2U.S. Energy Development CorpApr 2025 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 825283-99 | Drill | COG Operating LLC | Apr 7, 2017 | Apr 17, 2017 | Jul 8, 2017 | 11,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Nov 22, 2017 | The Sphinx O-10-49497 | Wolfbone (Trend Area) | U.S. Energy Development Corp | Producing | 10,726 |
Formation tops
As filed on W-2/G-1. Subsea from 2,587 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| DelawareFORD-DELAWARE | 2,500 | 87 |
| CastileCASTILLE | 2,800 | -213 |
| Delaware | 4,964 | -2,377 |
| Bell Canyon | 5,001 | -2,414 |
| Cherry Canyon | 5,920 | -3,333 |
| DelawareDELAWARE CONSOLIDATED GAS | 6,500 | -3,913 |
| Bone SpringBONE SPRINGS | 8,102 | -5,515 |
| Wolfcamp | 10,631 | -8,044 |
| Pennsylvanian | — | — |
| Permian (undifferentiated)PERMIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,039 | 22,007 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 2,187 | 17.5 | 2,130 S |
| 9.625 | 10,100 | 12.25 | 2,050 S |
| 5.5 | 22,180 | 8.5 | 4,820 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 | Mar 9, 2018 | Jan 8, 2018 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Sep 1, 2020. Neutron. 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 | TIFF | from 11,022 | Sep 1, 2020 | 47.0 |
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 42-389-35874 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-389-35874 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/38935874, documented in the API reference.