TEXAS · WELLS · TARRANT COUNTY · OLIVER "A" UNIT LEASE · API 42-439-31135 · DISTRICT 7C
Oliver a Unit #11 H
Tarrant County · Newark East (Barnett Shale) field · Horizontal
Oliver A Unit #11 H (API 42-439-31135) is a plugged horizontal well in Tarrant County, plugged January 20, 2011, last operated by Devon Energy Production CO L.P..
The RRC has issued one drilling permit (amended once), issued February 8, 2005, permitted to 8,900 ft.
It was permitted by Chief Oil & Gas LLC and has since transferred to Devon Energy Production CO L.P. on the wellbore schedule.
Completion filings report 4 formation tops, including Marble Falls, Barnett, Barentt Lime, Ordovician.
Its lease has reported 480K mcf of gas since October 2006, with no volume in the three years through August 2026.
Operator of record
Devon Energy Production Co L.P.
Permitted by Chief Oil & Gas LLC; the EWA schedule now lists a different operator.
- Based in
- Oklahoma City, OK
- P-5 status
- Active (A)
- P-5 last filed
- Dec 18, 2025
- Permits on file
- 9,266
- Phone
- (405) 235-3611
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Devon Energy Production Co L.P. |
| Production reports | Devon Energy Production Co, L.P.through Jun 2010 |
| Latest permit | Chief Oil & Gas LLCFeb 8, 2005 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,900
- total depth, ft
- 2
- permits on file
- Feb 8, 2005
- last permit issued
- Oct 16, 2006
- completed
- 0
- cumulative oil, bbl
- 480K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · OCT 2006 THROUGH JUN 2010
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Oct 16, 2006
- Shut in
- —
- Plugged
- Jan 20, 2011
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 |
|---|---|---|---|---|---|---|
| Oliver "a" Unit G-13-227639 | Newark, East (Barnett Shale) | Devon Energy Production Co, L.P. | 1 | 0 | 480K | Oct 2006 – Jun 2010 |
No volumes reported on these leases in the last three years.
Wells named Oliver a Unit
Devon Energy Production Co L.P.'s other wells filed under this lease name in Tarrant 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.
- 1Devon Energy Production Co, L.P.Oct 2006 → Jun 2010
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 557419-98 | Drill | Chief Oil & Gas LLC | Dec 7, 2005 | Feb 8, 2005 | Aug 25, 2006 | 8,900 |
| 557419-99 | Drill | Chief Oil & Gas LLC | Feb 8, 2005 | Feb 8, 2005 | Aug 23, 2006 | 8,900 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Oct 16, 2006 | Oliver a Unit G-13-227639 | Newark East (Barnett Shale) | Devon Energy Production Co L.P. | Plugged | — |
Formation tops
As filed on W-2/G-1. Subsea from 742 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Marble Falls | 6,232 | -5,490 |
| Marble Falls | 6,413 | -5,671 |
| BarnettUPPER BARNETT SHALE | 6,637 | -5,895 |
| Barentt Lime | 6,692 | -5,950 |
| BarnettUPPER BARNETT SHALE | 6,739 | -5,997 |
| Ordovician | 6,980 | -6,238 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 7,220 | 7,224 | Perforated |
| 7,720 | 7,724 | Perforated |
| 8,220 | 8,224 | Perforated |
| 8,720 | 8,724 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 1,136 | 12.25 | 585 S |
| 5.5 | 8,806 | 7.875 | 760 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 | Oct 10, 2008 | Apr 20, 2008 | — |
| 00 | Jul 11, 2007 | Feb 20, 2007 | Yes |
| 00 | Jul 3, 2007 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Sep 30, 2009. Cased hole. 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 |
|---|---|---|---|---|
| SURVEYS CASED HOLESpans Marble Falls, Barnett, Barentt Lime, Ordovician | TIFF | 6,325 to 8,818 | Sep 30, 2009run Sep 4, 2006 | 6.09 |
"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 42-439-31135 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-439-31135 → 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/43931135, documented in the API reference.