42-461-42343
PRODUCING HorizontalMARY 18D
UPTON County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)
Permits
1
Max Depth
8,900 ft
First Permit
2022-12-27
Latest Activity
2022-12-27
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2023-05-18
Shut-In
—
Plugged
—
P-5 Org Status: Active
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
2023-03
Last Production
2026-07
Lease Production
Production is reported at the lease level. View production data, decline curves, and history on the lease page.
Formation Tops (10) Elevation 2,833 ft (KB)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| YATES | 2,629 ft | +204 ft |
| GRAYBURG | 4,305 ft | -1,472 ft |
| SAN ANDRES - SALTWATER FLOW (San Andres) | 4,569 ft | -1,736 ft |
| CLEARFORK (Clear Fork) | 6,695 ft | -3,862 ft |
| SPRABERRY | 7,567 ft | -4,734 ft |
| DEVONIAN | — | — |
| ELLENBURGER | — | — |
| FUSSELMAN | — | — |
| STRAWN | — | — |
| WOLFCAMP | — | — |
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 ↗
Offset Well Tops (nearest 8 wells with tops)
What nearby completed wells reported.
Nearest wells within 10 mi (surface locations). Click wells to select them, then open the cross-section to compare tops side by side (max 6 wells per section, including this one).
Perforations (1)
| Interval | Type |
|---|---|
| 8,795–19,074 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 1,494 ft | 1,975 sx |
| 9.625" | 5,953 ft | 1,569 sx |
| 5.5" | 19,093 ft | 938 sx |
Permit History (1)
Applications (1)
Records & Logs
2 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.
Well Details
- Well Number
- 4H
- Max Depth
- 8,900 ft
- Drill Type
- Horizontal
- County
- UPTON
- District
- 7
- Operator
- PIONEER NATURAL RES. USA INC.
- Completed
- 2023-05-18
Operator
- Location
- Y SPRING
- P-5 Status
- Active (filed 2025-08-01)
- Cum Oil (all leases)
- 1,771,882,421 bbl
- Cum Gas (all leases)
- 1,763,727,021 mcf
- Activities
- CSGD/G, CSGD/P, G/PUR, GTHS/G, GTHS/O, OPRS/G, OPRS/O
- Total Permits
- 15,399