WELL · 42-311-32531 · DISTRICT 1
Lark North #1
McMullen County · Jacob field · Vertical
Lark North #1 (API 42-311-32531) is a plugged well in Mcmullen County, plugged July 31, 2018, last operated by Bull Oil Company LLC.
The RRC has issued one drilling permit, issued March 31, 1987, permitted to 1,050 ft.
It was permitted by Lagerquist, Walter G., JR. and has since transferred to Bull Oil Company LLC on the wellbore schedule.
Completion filings report 2 formation tops, including Mirando Sand, Pettus Sand.
Its 2 leases have reported 15.1K barrels of oil and 20 mcf of gas since January 1993, last reporting in July 2026. The leases carry 15 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Lagerquist, Walter G., Jr.; the EWA schedule now lists a different operator.
Livingston, TX · P-5 Y, filed Jan 4, 2026 · (936) 433-9916
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Bull Oil Company LLC |
| Production reports | Bull Oil Company, LLCthrough Mar 2026 |
| Latest permit | Lagerquist, Walter G., Jr.Mar 31, 1987 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 1,050
- total depth, ft
- 1
- permits on file
- Mar 31, 1987
- last permit issued
- Apr 8, 1987
- completed
- 15.1K
- cumulative oil, bbl
- 20
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 8, 1987
- Shut in
- —
- Plugged
- Jul 31, 2018
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 2 leases this well is completed on; they carry 15 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Lark North O-1-11876 | Jacob | Bull Oil Company, LLC | 10 | 14.6K | 20 | Jan 1993 – Jul 2026 |
| Lark North O-1-15073 | Jacob | Bull Oil Company, LLC | 5 | 516 | 0 | Feb 2009 – Jul 2026 |
Oil, barrels lease total
Last 12 months 24 · prior 12 45(-47%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Lagerquist, Walter G., Jr.Jan 1993 → Jul 2005
- 2J-Bar Oil CompanyNov 2005 → Mar 2010
- 3Aurora Resources CorporationMay 2008 → Jun 2011
- 4Cibolo Production, LLCApr 2010 → Jun 2018
- 5J&J OilSep 2013 → Nov 2014
- 6ENERGON3Dec 2014 → Aug 2016
- 7Bull Oil Company, LLCSep 2018 → Mar 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 328483-99 | Drill | Lagerquist, Walter G., Jr. | Mar 31, 1987 | Mar 31, 1987 | — | 1,050 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-1-11876 | — | — | — | — |
| — | — O-1-15073 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 1,013 | 1,015 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 1,084 | 6.75 | 140 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 | Oct 13, 2009 | Aug 31, 1987 | Yes |
| 00 | Oct 9, 1987 | Aug 31, 1987 | Yes |
| 00 | Oct 1, 1987 | — | — |
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 42-311-32531 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-311-32531 → 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/31132531, documented in the API reference.