WELL · 42-413-31990 · DISTRICT 7

University 57-6 #1

Plugged

University 57-6 #1 (API 42-413-31990) is a plugged well in Schleicher County, plugged June 20, 1997, last operated by Hamman Oil & Refg. CO..

The RRC has issued 2 drilling permits between 1997 and 2004, permitted to 8,000 ft.

Completion filings report one formation top, including Leonard.

Its lease has reported 16.1K barrels of oil since October 2004, last reporting in July 2026.

Operator of record

Hamman Oil & Refg. Co.

Based in: Houston, TX
P-5 status: Active (A)
P-5 last filed: Jun 1, 2026
Permits on file: 359
Phone: (713) 526-7417

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	none
Production reports	Blackstone Energy Services LLCthrough Apr 2026
Latest permit	Hamman Oil & Refg. Co.Aug 20, 2004

8,000: total depth, ft
2: permits on file
Aug 20, 2004: last permit issued
—: completed
16.1K: cumulative oil, bbl
0: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Oct 2004 THROUGH Jul 2026

Regulatory status · RRC wellbore file

Schedule: OFF SCHEDULE
Completed: —
Shut in: —
Plugged: Jun 20, 1997

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
University 57-6 O-9-15703	University 101 (Leonard)	Blackstone Energy Services LLC	1	16.1K	0	Oct 2004 – Jul 2026

Oil, barrels lease total

Last 12 months 532 · prior 12 513(+4%)

Chain of custody

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

1Hamman Oil & Refining CompanyDec 2004 → May 2024
2Blackstone Energy Services LLCJun 2024 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
549637-99	Reenter	Hamman Oil & Refg. Co.	Aug 16, 2004	Aug 20, 2004	—	7,400
460658-99	Drill	Thompson, J. Cleo	Apr 3, 1997	Apr 4, 1997	Jun 14, 1997	8,000

Completions

Completed	Lease	Field	Operator	Status	Depth
—	— O-9-15703	—	—	—	—

Formation tops

As filed on W-2/G-1. Subsea from 2,507 ft elevation.Download CSV →

Formation	MD ft	Subsea
Leonard	3,459	-952

Perforations

Perforated and open-hole intervals.

From	To	Type
3,716	3,768	Perforated
3,847	3,874	Perforated
3,975	3,981	Perforated
4,010	4,027	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
8.625	1,490	11	708 S
4.5	4,268	7.875	300 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	May 20, 2005	Jan 7, 2005	Yes
00	Apr 26, 2005	—	—

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 42-413-31990 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-413-31990 → scanned completion filings

Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. then paste it into their 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/41331990, documented in the API reference.