WELL · 42-173-37891 · DISTRICT 8

Blalock 1319 #1319AH

Glasscock County · Spraberry (Trend Area) field · Producing · Horizontal

Blalock 1319 #1319AH (API 42-173-37891) is a horizontal well in Glasscock County operated by Xto Energy Inc., completed November 29, 2018 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit (amended once), issued May 8, 2018, permitted to 8,440 ft.

Completion filings report 10 formation tops, including Santa Rosa, Yates, Seven Rivers, Queen.

Its lease has reported 491K barrels of oil and 877K mcf of gas since November 2018, last reporting in July 2026.

Operator of record

XTO Energy Inc.

Based in: Spring, TX
P-5 status: Active – Extension (X)
P-5 last filed: Apr 8, 2026
Permits on file: 16,156
Phone: (346) 502-1572

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	XTO Energy Inc.
Production reports	XTO Energy Inc.through Apr 2026
Latest permit	XTO Energy Inc.May 8, 2018

8,440: total depth, ft
2: permits on file
May 8, 2018: last permit issued
Nov 29, 2018: completed
491K: cumulative oil, bbl
877K: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Nov 2018 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Nov 29, 2018
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active – Extension (X)

Surface location

31.944903, -101.710869

Google Maps ↗

Permit surface location from the RRC GIS record, in Glasscock County.

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
Blalock 1319 O-10-51321	Spraberry (Trend Area)	XTO Energy Inc.	1	491K	877K	Nov 2018 – Jul 2026

Oil, barrels lease total

Last 12 months 18,227 · prior 12 24,502(-26%)

Gas, mcf lease total

Last 12 months 91,995 · prior 12 54,068(+70%)

Chain of custody

Every operator that reported production on this well's lease, in order.

1XTO Energy Inc.Nov 2018 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
839633-98	Drill	XTO Energy Inc.	Aug 6, 2019	May 8, 2018	Jun 13, 2018	8,440
839633-99	Drill	XTO Energy Inc.	May 4, 2018	May 8, 2018	Jun 13, 2018	8,440

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-10-51321	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 2,566 ft elevation.Download CSV →

Formation	MD ft	Subsea
Santa Rosa	748	1,818
Yates	2,113	453
Seven Rivers	2,395	171
Queen	2,973	-407
Grayburg	3,586	-1,020
San AndresSAN ANDRES - HIGH FLOWS, H2S, CO	3,641	-1,075
Glorieta	4,463	-1,897
Clear ForkCLEARFORK	5,496	-2,930
Spraberry	6,626	-4,060
Wichita-AlbanyWICHITA ALBANY	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
9,295	19,583	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	744	17.5	648 S
9.625	7,604	12.25	2,262 S
5.5	19,713	8.5	2,368 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. About these reports →

Suffix	Filed	W-2 / G-1 date	Logs referenced
00	Oct 11, 2019	Jul 17, 2019	Yes
00	May 6, 2019	Jan 11, 2019	Yes

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 42-173-37891 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-173-37891 → scanned completion filings

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their 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.

Open the cross-section →

Blalock 132942-173-37888

0.0 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	747	1,821
Yates	2,112	456
Seven Rivers	2,394	174
Queen	2,972	-404
Grayburg	3,585	-1,017
San Andres	3,640	-1,072
Glorieta	4,462	-1,894
Clear Fork	5,495	-2,927

10 TOPS · FIRST 8

Blalock 130942-173-37902

0.0 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	719	1,850
Yates	2,084	485
Seven Rivers	2,366	203
Queen	2,944	-375
Grayburg	3,557	-988
San Andres	3,612	-1,043
Glorieta	4,434	-1,865
Clear Fork	5,467	-2,898

10 TOPS · FIRST 8

Blalock 132342-173-38524

0.4 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	673	1,879
Rustler	1,242	1,310
Yates	2,052	500
Seven Rivers	2,215	337
Queen	2,913	-361
Grayburg	3,341	-789
San Andres	3,589	-1,037
Glorieta	4,367	-1,815

10 TOPS · FIRST 8

Blalock 138242-173-38532

1.1 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	699	1,864
Rustler	1,237	1,326
Yates	2,078	485
Seven Rivers	2,225	338
Queen	2,939	-376
Grayburg	3,355	-792
San Andres	3,615	-1,052
Glorieta	4,424	-1,861

10 TOPS · FIRST 8

Blalock 138242-173-38531

1.1 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	699	1,864
Rustler	1,234	1,329
Yates	2,078	485
Seven Rivers	2,229	334
Queen	2,939	-376
Grayburg	3,339	-776
San Andres	3,615	-1,052
Glorieta	4,427	-1,864

10 TOPS · FIRST 8

Blalock 132242-173-38530

1.1 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	705	1,858
Rustler	1,254	1,309
Yates	2,084	479
Seven Rivers	2,226	337
Queen	2,945	-382
Grayburg	3,347	-784
San Andres	3,621	-1,058
Glorieta	4,443	-1,880

10 TOPS · FIRST 8

Blalock 131142-173-38535

1.3 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	706	1,858
Rustler	1,345	1,219
Yates	2,085	479
Seven Rivers	2,286	278
Queen	2,946	-382
Grayburg	3,352	-788
San Andres	3,608	-1,044
Glorieta	4,445	-1,881

14 TOPS · FIRST 8

Blalock 132142-173-38534

1.3 KM · XTO Energy Inc. · Section with this well →

Santa Rosa	747	1,817
Rustler	1,253	1,311
Yates	2,083	481
Seven Rivers	2,220	344
Queen	2,978	-414
Grayburg	3,346	-782
San Andres	3,605	-1,041
Glorieta	4,491	-1,927

18 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/17337891, documented in the API reference.