TEXAS · WELLS · ATASCOSA COUNTY · API 42-013-34318 · DISTRICT 01
Heard Bower East Unit #1H
Atascosa County · Eagleville (Eagle Ford-1) field · Shut In · Horizontal
Heard Bower East Unit #1H (API 42-013-34318) is a horizontal well in Atascosa County operated by Marathon Oil EF LLC, completed February 22, 2011 and listed as shut in on the RRC schedule, shut in December 1, 2023.
The RRC has issued one drilling permit (amended twice), issued September 17, 2010, permitted to 11,091 ft.
It was permitted by Cinco Natural Resources Corp. and has since transferred to Marathon Oil EF LLC on the wellbore schedule.
Completion filings report 3 formation tops, including Olmos, Austin Chalk, Eagle Ford.
Its 3 leases have reported 2.1M barrels of oil and 2.6M mcf of gas since February 2011, last reporting in July 2026. The leases carry 16 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Cinco Natural Resources Corp.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Sep 26, 2025
- Permits on file
- 3,191
- Phone
- (832) 486-2737
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Marathon Oil EF LLC |
| Production reports | Marathon Oil EF LLCthrough Apr 2026 |
| Latest permit | Cinco Natural Resources Corp.Sep 17, 2010 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,091
- total depth, ft
- 3
- permits on file
- Sep 17, 2010
- last permit issued
- Feb 22, 2011
- completed
- 2.1M
- cumulative oil, bbl
- 2.6M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Feb 2011 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 22, 2011
- Shut in
- Dec 1, 2023
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 3 leases this well is completed on; they carry 16 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Heard Bower West Unit O-1-15760 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | 9 | 1.26M | 1.48M | Sep 2011 – Jul 2026 |
| Heard Bower East Unit O-1-15799 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | 6 | 743K | 895K | Nov 2011 – Jul 2026 |
| J.P. Heard-Bower D O-1-15820 | Eagleville (Eagle Ford-1) | Aurora USA Development, LLC | 1 | 94K | 221K | Feb 2011 – Jul 2014 |
Oil, barrels lease total
Last 12 months 34,065 · prior 12 33,209(+3%)
Gas, mcf lease total
Last 12 months 46,801 · prior 12 25,373(+84%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Cinco Natural Resources Corp.Feb 2011 → Feb 2013
- 2Aurora USA Development, LLCMar 2013 → May 2014
- 3Baytex USA Development, LLCJun 2014 → Jun 2016
- 4Teal Operating, LLCJul 2016 → Oct 2021
- 5Marathon Oil EF LLCNov 2021 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 702133-97 | Drill | Cinco Natural Resources Corp. | Feb 15, 2012 | Sep 17, 2010 | Oct 23, 2010 | 10,959 |
| 702133-98 | Drill | Cinco Natural Resources Corp. | Feb 3, 2011 | Sep 17, 2010 | Oct 23, 2010 | 10,959 |
| 702133-99 | Drill | Cinco Natural Resources Corp. | Sep 14, 2010 | Sep 17, 2010 | Oct 23, 2010 | 10,959 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Feb 22, 2011 | Heard Bower East Unit O-1-15799 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | Shut In · shut in Dec 1, 2023 | 11,091 |
| Feb 22, 2011 | Heard Bower West Unit O-1-15760 | Eagleville (Eagle Ford-1) | Marathon Oil EF LLC | Not on Schedule | — |
| Feb 22, 2011 | J.P. Heard-Bower D O-1-15820 | Eagleville (Eagle Ford-1) | Aurora USA Development LLC | Not on Schedule | — |
Formation tops
As filed on W-2/G-1. Download CSV →
| Formation | MD ft |
|---|---|
| Olmos | 8,225 |
| Austin Chalk | 10,693 |
| Eagle FordEAGLEFORD | 10,832 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,032 | 15,302 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 6,820 | 12.25 | 1,591 S |
| 5.5 | 15,345 | 8.75 | 3,094 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 | Apr 14, 2014 | Mar 21, 2012 | Yes |
| 00 | Apr 10, 2014 | Mar 21, 2012 | Yes |
| 00 | May 25, 2012 | Mar 21, 2012 | 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 42-013-34318 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-013-34318 → 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.
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/01334318, documented in the API reference.