TEXAS · WELLS · GRIMES COUNTY · O'BRIEN DL LEASE · API 42-185-30531 · DISTRICT 03
O Brien DL #1H
Grimes County · Giddings (Austin Chalk Gas) field · Producing · Horizontal
- Fields on the latest permit · any of 2
- Giddings (Austin Chalk-3) · Giddings (Austin Chalk, Gas)
- 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.
O Brien DL #1H (API 42-185-30531) is a horizontal well in Grimes County operated by Magnolia Oil & Gas Operating LLC, completed October 20, 1995 and listed as producing on the RRC schedule, shut in April 1, 2020.
The RRC has issued one drilling permit, issued July 18, 1995, permitted to 13,597 ft.
It was permitted by Chesapeake Operating, Inc. and has since transferred to Magnolia Oil & Gas Operating LLC on the wellbore schedule.
Completion filings report one formation top, including Austin Chalk.
Its lease has reported 119K barrels of oil and 2.52M mcf of gas since October 1995, with no volume in the three years through August 2026.
Operator of record
Magnolia Oil & Gas Operating LLC
Permitted by Chesapeake Operating, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- May 6, 2026
- Permits on file
- 617
- Phone
- (713) 842-9050
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Magnolia Oil & Gas Operating LLC |
| Production reports | Magnolia Oil & Gas Operating LLCthrough Oct 2023 |
| Latest permit | Chesapeake Operating, Inc.Jul 18, 1995 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,597
- total depth, ft
- 1
- permits on file
- Jul 18, 1995
- last permit issued
- Oct 20, 1995
- completed
- 119K
- cumulative oil, bbl
- 2.52M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · OCT 1995 THROUGH OCT 2023
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Oct 20, 1995
- Shut in
- Apr 1, 2020
- Plugged
- —
Operator's P-5 on the schedule: Active (A)
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 AUG 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 |
|---|---|---|---|---|---|---|
| O'Brien DL G-3-156487 | Giddings (Austin Chalk, Gas) | Magnolia Oil & Gas Operating LLC | 1 | 119K | 2.52M | Oct 1995 – Oct 2023 |
No volumes reported on these leases in the last three years.
Wells named O Brien DL
Magnolia Oil & Gas Operating LLC's other wells filed under this lease name in Grimes 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.
- 1Chesapeake Operating, Inc.Oct 1995 → Jun 2009
- 2Enervest Operating, L.L.C.Jul 2009 → Jul 2018
- 3Magnolia Oil & Gas Operating LLCAug 2018 → Dec 2021
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 437969-99 | Drill | Chesapeake Operating, Inc. | Jul 18, 1995 | Jul 18, 1995 | Jul 18, 1995 | 13,200 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 20, 1995 | O Brien DL G-3-156487 | Giddings (Austin Chalk Gas) | Magnolia Oil & Gas Operating LLC | Producing · shut in Apr 1, 2020 | 13,597 |
Formation tops
As filed on W-2/G-1. Subsea from 230 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Austin Chalk | 11,505 | -11,275 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 11,506 | 13,597 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 2,704 | 17.5 | 1,495 S |
| 9.625 | 11,604 | 12.25 | 1,365 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 | Jan 31, 1996 | Dec 1, 1995 | Yes |
| 00 | Jan 5, 1996 | — | — |
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 42-185-30531 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-185-30531 → scanned completion filings
Log images filed since 2004 open from the RRC's log search for this well; none are loaded here 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/18530531, documented in the API reference.