TEXAS · WELLS · HARRISON COUNTY · HERRIN, MARGARET LEASE · API 42-203-33413 · DISTRICT 06
Herrin Margaret #4
Harrison County · Carthage North (Cotton Valley) field · Producing · Vertical
- Fields on the latest permit · any of 2
- Bethany (Travis Peak Cons.) · Carthage, North (Cotton Valley)
- Not one formation; the well must be completed in one of them, and no target formation is stated. The district's wildcat field is also on the permit.
Herrin Margaret #4 (API 42-203-33413) is a well in Harrison County operated by Brookston Energy Inc., completed May 7, 2007 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued February 17, 2006, permitted to 9,963 ft.
It was permitted by Penn Virginia Oil & Gas, L.P. and has since transferred to Brookston Energy Inc. on the wellbore schedule.
Completion filings report 3 formation tops, including James Lime, Sligo, Cotton Valley.
Its lease has reported 3.66K barrels of oil and 295K mcf of gas since October 2006, last reporting volume in April 2026.
Operator of record
Permitted by Penn Virginia Oil & Gas, L.P.; the EWA schedule now lists a different operator.
- Based in
- Tyler, TX
- P-5 status
- Active (A)
- P-5 last filed
- Sep 5, 2025
- Permits on file
- 46
- Phone
- (903) 405-1901
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Brookston Energy Inc. |
| Production reports | Brookston Energy, Inc.through Apr 2026 |
| Latest permit | Penn Virginia Oil & Gas, L.P.Feb 17, 2006 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 9,963
- total depth, ft
- 2
- permits on file
- Feb 17, 2006
- last permit issued
- May 7, 2007
- completed
- 3.66K
- cumulative oil, bbl
- 295K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · OCT 2006 THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 7, 2007
- Shut in
- —
- 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.
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 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 |
|---|---|---|---|---|---|---|
| Herrin, Margaret G-6-226090 | Carthage, North (Cotton Valley) | Brookston Energy, Inc. | 1 | 3.66K | 295K | Oct 2006 – Apr 2026 |
Gas, mcf lease total
Last 12 months 2,060 · prior 12 2,162(-5%)
Wells named Herrin Margaret
Brookston Energy Inc.'s other wells filed under this lease name in Harrison 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.
- 1Penn Virginia Oil & Gas, L.P.Oct 2006 → Sep 2015
- 2Covey Park Operating LLCOct 2015 → Apr 2016
- 3Covey Park Resources LLCMay 2016 → Aug 2019
- 4Comstock Oil & Gas, LLCSep 2019 → Aug 2025
- 5Brookston Energy, Inc.Sep 2025 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 614396-98 | Drill | Penn Virginia Oil & Gas, L.P. | Mar 23, 2006 | Feb 17, 2006 | Aug 20, 2006 | 12,000 |
| 614396-99 | Drill | Penn Virginia Oil & Gas, L.P. | Feb 16, 2006 | Feb 17, 2006 | — | 10,500 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 7, 2007 | Herrin Margaret G-6-226090 | Carthage North (Cotton Valley) | Brookston Energy Inc. | Producing | 9,963 |
Formation tops
As filed on W-2/G-1. Subsea from 341 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| James LimeJAMES | 5,735 | -5,394 |
| Sligo | 6,025 | -5,684 |
| Cotton ValleyCOTTON VALLEY B LIME | 8,395 | -8,054 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,478 | 9,221 | Perforated |
| 9,506 | 9,801 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 2,681 | 11 | 835 S |
| 4.5 | 9,960 | 7.875 | 1,400 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 | Jun 24, 2009 | May 26, 2009 | — |
| 00 | May 18, 2007 | Mar 13, 2007 | Yes |
| 00 | Apr 23, 2007 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Oct 19, 2009. Density, Neutron, Resistivity. 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 |
|---|---|---|---|---|
| COMBINATION: RESISTIVITY/NEUTRON/DENSITY POROSITYSpans James Lime, Sligo, Cotton Valley | TIFF | 2,678 to 9,954 | Oct 19, 2009run Sep 6, 2006 | 4.81 |
"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 42-203-33413 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-203-33413 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it.
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/20333413, documented in the API reference.