42-105-38194
SWR-10-WELLMCMULLAN 36
CROCKETT County · District 7 · EXTEX OPERATING COMPANY · DAVIDSON RANCH (PENN. 7890)
Permits
1
Max Depth
9,400 ft
First Permit
1998-09-25
Latest Activity
1998-09-25
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2003-07-29
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: EXTEX OPERATING COMPANY ≠ Permit: PIONEER NATURAL RES. USA, INC.
Resolved via: production → EXTEX OPERATING COMPANY
Production Summary Production data is a work in progress — still being validated against RRC filings. Spot something off or have questions? [email protected]
Cum Oil
— bbl
Cum Gas
— mcf
First Production
1998-10
Last Production
2026-07
Operator History
Chain of Custody
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (3) Elevation 2,274 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| CANYON | 6,020 ft | -3,746 ft |
| PENN (Pennsylvanian) | 7,685 ft | -5,411 ft |
| STRAWN | 8,630 ft | -6,356 ft |
As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗
Perforations (4)
| Interval | Type |
|---|---|
| 6,026–6,137 ft | Perforated |
| 7,689–7,795 ft | Perforated |
| 7,986–7,996 ft | Perforated |
| 8,658–8,687 ft | Perforated |
Casing (2)
| Size | Set Depth | Cement |
|---|---|---|
| 8.625" | 1,331 ft | 420 sx |
| 4.5" | 9,192 ft | 1,000 sx |
Permit History (1)
Applications (1)
Records & Logs
4 completion filings on record · 1 with log images at RRC.
Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.
No GPS coordinates yet
Well Details
- Well Number
- 4R
- Max Depth
- 9,400 ft
- Drill Type
- Vertical
- County
- CROCKETT
- District
- 7
- Operator
- EXTEX OPERATING COMPANY
- Completed
- 2003-07-29
Operator
- Name
- EXTEX OPER CO
- Location
- HOUSTON
- P-5 Status
- Active (filed 2026-01-07)
- Cum Oil (all leases)
- 5,887,486 bbl
- Cum Gas (all leases)
- 10,031,045 mcf
- Activities
- OPRS/G, OPRS/O
- Total Permits
- 117