TEXAS · WELLS · MARTIN COUNTY · GUARDIAN 250 B LEASE · API 42-317-43635 · DISTRICT 7B
Guardian 250 B #2WB
Martin County · Spraberry (Trend Area) field · Producing · Horizontal
Guardian 250 B #2WB (API 42-317-43635) is a horizontal well in Martin County operated by Diamondback E&P LLC, completed December 22, 2021 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued July 14, 2021, permitted to 9,986 ft.
Completion filings report 10 formation tops, including Santa Rosa, Yates, Queen, Grayburg.
Its lease has reported 333K barrels of oil and 796K mcf of gas since October 2021, last reporting volume in August 2026.
Operator of record
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,254
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Aug 2026 |
| Latest permit | Diamondback E&P LLCJul 14, 2021 |
- 9,986
- total depth, ft
- 1
- permits on file
- Jul 14, 2021
- last permit issued
- Dec 22, 2021
- completed
- 333K
- cumulative oil, bbl
- 796K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · DEC 2021 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Dec 22, 2021
- 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.
Wells nearby
Every well with a location on file around this well, 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 AUG 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 |
|---|---|---|---|---|---|---|
| Guardian 250 B O-10-56592 | Spraberry (Trend Area) | Diamondback E&P LLC | 1 | 333K | 796K | Oct 2021 – Aug 2026 |
Oil, barrels lease total
Last 12 months 23,774 · prior 12 32,416(-27%)
Gas, mcf lease total
Last 12 months 92,784 · prior 12 92,183(+1%)
Wells named Guardian 250 B
Diamondback E&P LLC's other wells filed under this lease name in Martin County, newest permit first. The RRC gives a gas well its own lease number, so the name is what joins the wells of a unit.
Loading the lease's wellsChain of custody
Every operator that reported production on this well's lease, in order.
- 1Diamondback E&P LLCDec 2021 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 870539-99 | Drill | Diamondback E&P LLC | Jun 16, 2021 | Jul 14, 2021 | Sep 10, 2021 | 13,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Dec 22, 2021 | Guardian 250 B O-10-56592 | Spraberry (Trend Area) | Diamondback E&P LLC | Producing | 9,986 |
Formation tops
As filed on W-2/G-1. Subsea from 2,907 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Santa Rosa | 1,072 | 1,835 |
| Yates | 2,944 | -37 |
| Queen | 3,751 | -844 |
| Grayburg | 3,895 | -988 |
| San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H | 4,441 | -1,534 |
| Glorieta | 5,460 | -2,553 |
| Clear ForkCLEARFORK | 6,480 | -3,573 |
| Spraberry | 8,214 | -5,307 |
| Dean | 9,486 | -6,579 |
| Wolfcamp | 9,623 | -6,716 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,610 | 20,613 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 11.75 | 1,994 | 14.75 | 1,435 S |
| 8.625 | 9,848 | 11 | 940 S |
| 5.5 | 20,675 | 7.875 | 1,675 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 | Apr 19, 2022 | Mar 11, 2022 | Yes |
| 00 | Feb 1, 2022 | Jan 6, 2022 | — |
Well logs
1 log loaded from the RRC's log index, the latest received Dec 12, 2024. Cement bond. 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 |
|---|---|---|---|---|
| Cement BondSpans Santa Rosa, Yates, Queen, Grayburg, San Andres, Glorieta, Clear Fork, Spraberry, Dean, Wolfcamp | TIFF | 0 to 10,311 | Dec 12, 2024 | 35.1 |
"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 42-317-43635 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-43635 → 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.
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/31743635, documented in the API reference.