42-383-40357
PRODUCING HorizontalWELCH TRUST 8-7-E
REAGAN County · District 7 · PIONEER NATURAL RES. USA INC. · SPRABERRY (TREND AREA)
Permits
2
Max Depth
8,935 ft
First Permit
2018-07-23
Latest Activity
2018-07-23
Lifespan
< 1 yr
Regulatory Status
Schedule
ON SCHEDULE
Completion
2019-03-06
Shut-In
—
Plugged
—
P-5 Org Status: Active
EWA / Permit operator mismatch
Scheduling: PIONEER NATURAL RES. USA INC. ≠ Permit: PARSLEY ENERGY OPERATIONS, LLC
Resolved via: production → PIONEER NATURAL RES. USA, INC.
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
2019-03
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 (10) Elevation 2,658 ft (GL)
CSV| Formation | Top Depth (MD) | Subsea (+above / −below SL) |
|---|---|---|
| SAN ANDRES - SALTWATER FLOW, POS (San Andres) | 3,673 ft | -1,015 ft |
| CLEARFORK (Clear Fork) | 5,854 ft | -3,196 ft |
| SPRABERRY | 6,756 ft | -4,098 ft |
| DEAN | 8,148 ft | -5,490 ft |
| WOLFCAMP | 8,332 ft | -5,674 ft |
| ELLENBURGER | — | — |
| FUSSELMAN | — | — |
| GRAYBURG | — | — |
| QUEEN | — | — |
| STRAWN | — | — |
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 |
|---|---|
| 9,288–19,605 ft | Perforated |
Casing (3)
| Size | Set Depth | Cement |
|---|---|---|
| 13.375" | 462 ft | 400 sx |
| 9.625" | 8,188 ft | 690 sx |
| 5.5" | 19,651 ft | 2,715 sx |
Permit History (2)
Applications (2)
Records & Logs
1 completion filing 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
- 4309H
- Max Depth
- 8,935 ft
- Drill Type
- Horizontal
- County
- REAGAN
- District
- 7
- Operator
- PIONEER NATURAL RES. USA INC.
- Completed
- 2019-03-06
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
- 15,468