TEXAS · WELLS · MIDLAND COUNTY · SHACKELFORD I LEASE · API 42-329-40518 · DISTRICT 7B
Shackelford I #3309H
Midland County · Spraberry (Trend Area) R 40 Exc field · Producing · Horizontal
Shackelford I #3309H (API 42-329-40518) is a horizontal well in Midland County operated by Pioneer Natural Res. USA Inc., completed April 19, 2017 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 25, 2015, permitted to 8,826 ft.
Completion filings report 9 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.
Its lease has reported 536K barrels of oil and 2.54M mcf of gas since April 2017, last reporting volume in April 2026.
Operator of record
- Based in
- Spring, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 8, 2026
- Permits on file
- 15,633
- Phone
- (972) 444-4001
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Pioneer Natural Res. USA Inc. |
| Production reports | Pioneer Natural Res. USA, Inc.through Apr 2026 |
| Latest permit | Pioneer Natural Res. USA, Inc.Sep 25, 2015 |
- 8,826
- total depth, ft
- 1
- permits on file
- Sep 25, 2015
- last permit issued
- Apr 19, 2017
- completed
- 536K
- cumulative oil, bbl
- 2.54M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Apr 2017 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Apr 19, 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.
Lease production
PDQ LEASE REPORTS · REPORTED THROUGH APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; this well is the only one on it.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Shackelford I O-10-48593 | Spraberry (Trend Area) R 40 Exc | Pioneer Natural Res. USA, Inc. | 1 | 536K | 2.54M | Apr 2017 – Apr 2026 |
Gas, mcf lease total
Last 12 months 163,499 · prior 12 154,864(+6%)
Oil, barrels lease total
Last 12 months 13,057 · prior 12 11,512(+13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.Apr 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 810478-99 | Drill | Pioneer Natural Res. USA, Inc. | Sep 18, 2015 | Sep 25, 2015 | Nov 9, 2016 | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 19, 2017 | Shackelford I O-10-48593 | Spraberry (Trend Area) R 40 Exc | Pioneer Natural Res. USA Inc. | Producing | 8,826 |
Formation tops
As filed on W-2/G-1. Subsea from 2,647 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 676 | 1,971 |
| Santa Rosa | 730 | 1,917 |
| Yates | 2,584 | 63 |
| Seven Rivers | 2,891 | -244 |
| Queen | 3,440 | -793 |
| Grayburg | 3,957 | -1,310 |
| Grayburg | 3,958 | -1,311 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 4,166 | -1,519 |
| San AndresSAN ANDRES - HIGH FLOWS, H2S, CO | 4,167 | -1,520 |
| Clear ForkCLEARFORK | 6,134 | -3,487 |
| Spraberry | 7,106 | -4,459 |
| SpraberrySPRABERRY UPPER-DEAN | 8,466 | -5,819 |
| SpraberrySPRABERRY UPPER-DEAN | 8,468 | -5,821 |
| Glorieta | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,106 | 18,864 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 1,550 | 17.5 | 1,304 S |
| 9.625 | 6,239 | 12.25 | 1,077 S |
| 5.5 | 18,960 | 8.5 | 2,096 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 | Aug 15, 2017 | Jun 15, 2017 | Yes |
| 00 | Jun 22, 2017 | Apr 24, 2017 | — |
Well logs
1 log loaded from the RRC's log index, 1 of it with a digital LAS file, the latest received Jun 27, 2017. Gamma ray. 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 |
|---|---|---|---|---|
| Gamma RaySpans Santa Rosa, Yates, Seven Rivers, Queen, Grayburg, San Andres, Clear Fork, Spraberry | LAS + TIFF | 0 to 8,960 | Jun 27, 2017 | 0.62 + 12.5 |
"Spans" is by this well's own filed formation tops: a formation runs from its top to the next deeper top filed, and the deepest runs to the bottom of the log. Depths are measured along the wellbore, so on a horizontal the lateral counts in the formation it was landed in.
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 42-329-40518 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-329-40518 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/32940518, documented in the API reference.