WELL · 42-157-31050 · DISTRICT 3
Mahlmann Heirs #1
Fort Bend County · Big Creek field · Injection · Vertical
Mahlmann Heirs #1 (API 42-157-31050) is a well in Fort Bend County operated by KZ Global Energy LLC, completed July 17, 2014 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued November 20, 1979, permitted to 6,500 ft.
It was permitted by Bar M Petroleum CO., Inc. and has since transferred to KZ Global Energy LLC on the wellbore schedule.
Completion filings report 4 formation tops, including Miocene (undifferentiated), Catahoula, Frio, Vicksburg.
Its lease has reported 6.46K barrels of oil and 101 mcf of gas since January 1993, last reporting in July 2026. The lease carries 2 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 30.8K barrels injected in the 12 months reported through July 2025.
Operator of record
Permitted by Bar M Petroleum Co., Inc.; the EWA schedule now lists a different operator.
Houston, TX · P-5 Y, filed Apr 4, 2026 · (626) 400-0201
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | KZ Global Energy LLC |
| Production reports | KZ Global Energy, LLCthrough Mar 2026 |
| Latest permit | Bar M Petroleum Co., Inc.Nov 20, 1979 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 6,500
- total depth, ft
- 1
- permits on file
- Nov 20, 1979
- last permit issued
- Jul 17, 2014
- completed
- 6.46K
- cumulative oil, bbl
- 101
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 17, 2014
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Delinquent
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; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mahlmann Heirs O-3-13175 | Big Creek | KZ Global Energy, LLC | 2 | 6.46K | 101 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 35 · prior 12 15(+133%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Black Gold Operating Co., Inc.Jan 1993 → Feb 1993
- 2Clipper Operating Co., Inc.Mar 1993 → Nov 1996
- 3Property Development Group, Inc.Jan 1997 → May 2017
- 4Daniel Explorations IncMar 2006 → Apr 2006
- 5Lucas Energy, Inc.May 2006 → Oct 2006
- 6Rockwell Energy, LLCMar 2007 → Dec 2007
- 7Hamman Oil & Refining CompanyJan 2009 → Apr 2009
- 8Red Shell IncJun 2017 → Mar 2018
- 9Conel Resources, LLCOct 2018 → Apr 2022
- 10KZ Global Energy, LLCDec 2022 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 64696-99 | Drill | Bar M Petroleum Co., Inc. | Nov 20, 1979 | Nov 20, 1979 | Jan 9, 1980 | 6,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-3-13175 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 90 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Miocene (undifferentiated)MIOCENE | 2,620 | -2,530 |
| Catahoula | 4,600 | -4,510 |
| Frio | 4,955 | -4,865 |
| Vicksburg | 6,015 | -5,925 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,722 | 5,762 | Perforated |
| 6,120 | 6,178 | Perforated |
| 6,272 | 6,282 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 504 | 12.25 | 435 S |
| 8.625 | 519 | 12.25 | 435 S |
| 2.375 | 6,227 | — | — |
| 4.5 | 6,319 | 7.875 | 250 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 | Sep 8, 2015 | Nov 19, 2014 | — |
| 00 | Mar 16, 2009 | Feb 4, 2009 | — |
| 00 | Nov 19, 1986 | Oct 16, 1986 | — |
| 00 | Jan 12, 1984 | Jul 22, 1980 | — |
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 42-157-31050 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-157-31050 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 30.8K
- bbl, last 12 reported months
- 293K
- bbl, all reported
- Jul 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000110369 | W-14 Disposal | Active | 7,000 | 2,450 | 4,955–5,900 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 30,829 · prior 12 30,829(+0%)
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/15731050, documented in the API reference.