TEXAS · WELLS · UPTON COUNTY · SEBASTIAN 19-18-B LEASE · API 42-461-41435 · DISTRICT 6E
Sebastian 19-18-B #4104H
Upton County · Spraberry (Trend Area) R 40 Exc field · Shut In · Horizontal
Sebastian 19-18-B #4104H (API 42-461-41435) is a horizontal well in Upton County operated by Pioneer Natural Res. USA Inc., completed March 4, 2021 and listed as shut in on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued January 21, 2020, permitted to 9,080 ft.
It was permitted by Parsley Energy Operations, LLC and has since transferred to Pioneer Natural Res. USA Inc. on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Grayburg, San Andres, Clear Fork.
Its lease has reported 396K barrels of oil and 2.79M mcf of gas since April 2020, last reporting volume in April 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Parsley Energy Operations, LLC; the EWA schedule now lists a different operator.
- Based in
- Spring, TX
- P-5 status
- Active (A)
- P-5 last filed
- Jul 8, 2026
- Permits on file
- 15,628
- 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 | Parsley Energy Operations, LLCJan 21, 2020 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,080
- total depth, ft
- 2
- permits on file
- Jan 21, 2020
- last permit issued
- Mar 4, 2021
- completed
- 396K
- cumulative oil, bbl
- 2.79M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2021 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 4, 2021
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
Surface location
31.608321, -101.917607 NAD27, as filed
31.608458, -101.918016 WGS84
Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Upton County.
Wells nearby
Every well with a location on file around this one, 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 APR 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Sebastian 19-18-B O-9-21193 | Spraberry (Trend Area) R 40 Exc | Pioneer Natural Res. USA, Inc. | 2 | 396K | 2.79M | Apr 2020 – Apr 2026 |
Gas, mcf lease total
Last 12 months 347,895 · prior 12 500,457(-30%)
Oil, barrels lease total
Last 12 months 16,213 · prior 12 27,277(-41%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Pioneer Natural Res. USA, Inc.Feb 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 860724-98 | Drill | Parsley Energy Operations, LLC | Feb 5, 2020 | Jan 21, 2020 | Jan 24, 2020 | 9,560 |
| 860724-99 | Drill | Parsley Energy Operations, LLC | Jan 9, 2020 | Jan 21, 2020 | Jan 24, 2020 | 9,560 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 4, 2021 | Sebastian 19-18-B O-9-21193 | Spraberry (Trend Area) R 40 Exc | Pioneer Natural Res. USA Inc. | Shut In | 9,080 |
Formation tops
As filed on W-2/G-1. Subsea from 2,765 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,540 | 225 |
| Grayburg | 4,226 | -1,461 |
| San AndresSAN ANDRES - SALTWATER FLOW | 4,259 | -1,494 |
| San AndresSAN ANDRES - SALTWATER FLOW | 4,402 | -1,637 |
| Clear ForkCLEARFORK | 6,478 | -3,713 |
| Spraberry | 7,343 | -4,578 |
| Dean | 8,748 | -5,983 |
| Wolfcamp | 8,940 | -6,175 |
| Devonian | — | — |
| Fusselman | — | — |
| Grayburg | — | — |
| Strawn | — | — |
| Yates | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 9,250 | 16,561 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 500 | 17.5 | 545 S |
| 9.625 | 8,456 | 12.25 | 1,240 S |
| 5.5 | 16,658 | 8.75 | 2,415 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 | Jul 22, 2021 | Jul 2, 2021 | Yes |
| 00 | Jan 29, 2021 | Dec 15, 2020 | Yes |
Well logs
2 logs loaded from the RRC's log index, 1 of them with a digital LAS file, the latest received Feb 27, 2023. Gamma ray, While drilling (MWD). 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 Yates, Grayburg, San Andres, Clear Fork, Spraberry, Dean, Wolfcamp | TIFF | 0 to 16,668 | Feb 27, 2023 | 45.4 |
| Measure While Drilling (MWD)Spans Yates, Grayburg, San Andres, Clear Fork, Spraberry, Dean, Wolfcamp | LAS + TIFF | 0 to 16,668 | Jun 15, 2021 | 0.77 + 45.4 |
"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 42-461-41435 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-461-41435 → 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.
Nearby wells and their tops
NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM
Draw a cross-section
This well's tops beside its 5 nearest neighbors, subsea-aligned so they line up regardless of surface terrain.
Sebastian 19-18-B42-461-41434
0.0 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 4,259 | -1,494 |
| Clear Fork | 6,478 | -3,713 |
| Spraberry | 7,343 | -4,578 |
| Dean | 8,748 | -5,983 |
| Wolfcamp | 8,940 | -6,175 |
| Strawn | — | |
| Yates | — | |
| Devonian | — |
11 TOPS · FIRST 8
Sebastian 19-18-C42-461-41436
0.0 KM · Parsley Energy Operations, LLC · Section with this well →
| Yates | 2,530 | 235 |
| Grayburg | 4,222 | -1,457 |
| San Andres | 4,235 | -1,470 |
| Clear Fork | 6,476 | -3,711 |
| Spraberry | 7,338 | -4,573 |
| Dean | 8,744 | -5,979 |
| Wolfcamp | 8,936 | -6,171 |
| Devonian | — |
10 TOPS · FIRST 8
Sebastian 19-18-C42-461-41437
0.0 KM · Parsley Energy Operations, LLC · Section with this well →
| Yates | 2,534 | 231 |
| Grayburg | 4,220 | -1,455 |
| San Andres | 4,239 | -1,474 |
| Clear Fork | 6,476 | -3,711 |
| Spraberry | 7,344 | -4,579 |
| Dean | 8,746 | -5,981 |
| Wolfcamp | 8,943 | -6,178 |
| Devonian | — |
10 TOPS · FIRST 8
Sebastian 19-18-A42-461-40843
0.1 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 4,272 | -1,507 |
| Clear Fork | 6,475 | -3,710 |
| Spraberry | 7,296 | -4,531 |
| Wolfcamp | 8,942 | -6,177 |
| Ellenburger | — | |
| Strawn | — | |
| Yates | — | |
| Fusselman | — |
10 TOPS · FIRST 8
Sebastian 19-18-A42-461-40842
0.1 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 4,278 | -1,513 |
| Clear Fork | 6,470 | -3,705 |
| Spraberry | 7,301 | -4,536 |
| Dean | 8,739 | -5,974 |
| Wolfcamp | 8,933 | -6,168 |
| Yates | — | |
| Devonian | — | |
| Fusselman | — |
10 TOPS · FIRST 8
Sebastian 19-18-A42-461-40844
0.1 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 4,295 | -1,530 |
| Clear Fork | 6,494 | -3,729 |
| Spraberry | 7,316 | -4,551 |
| Dean | 8,754 | -5,989 |
| Wolfcamp | 8,944 | -6,179 |
| Devonian | — | |
| Fusselman | — | |
| Strawn | — |
10 TOPS · FIRST 8
Sebastian *19-30A42-461-40647
0.1 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 4,302 | -1,536 |
| Spraberry | 7,348 | -4,582 |
| Dean | 8,772 | -6,006 |
| Wolfcamp | 8,971 | -6,205 |
| Devonian | — | |
| Yates | — | |
| Strawn | — | |
| Grayburg | — |
10 TOPS · FIRST 8
Sebastian *19-30A42-461-40650
0.1 KM · Parsley Energy Operations, LLC · Section with this well →
| San Andres | 4,303 | -1,537 |
| Clear Fork | 6,511 | -3,745 |
| Spraberry | 7,351 | -4,585 |
| Dean | 8,773 | -6,007 |
| Wolfcamp | 8,970 | -6,204 |
| Yates | — | |
| Grayburg | — | |
| Fusselman | — |
10 TOPS · FIRST 8
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/46141435, documented in the API reference.