TEXAS · WELLS · ZAPATA COUNTY · J. VELA CUELLAR G. U. B LEASE · API 42-505-36048 · DISTRICT 04
J. Vela Cuellar G. U. B #1
Zapata County · Exsun (Lobo Cons.) field · Producing · Directional
J. Vela Cuellar G. U. B #1 (API 42-505-36048) is a well in Zapata County operated by Hilcorp Energy Company, completed May 16, 2008 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued December 19, 2007, permitted to 11,070 ft.
It was permitted by Chesapeake Operating, Inc. and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 4 formation tops, including Queen City, Big Blue, Lobo Unconfority, Lobo Unconformity.
Its lease has reported 24 barrels of oil and 382K mcf of gas since January 2008, last reporting volume in April 2026.
Operator of record
Permitted by Chesapeake Operating, Inc.; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,458
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Apr 2026 |
| Latest permit | Chesapeake Operating, Inc.Dec 19, 2007 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 11,070
- total depth, ft
- 1
- permits on file
- Dec 19, 2007
- last permit issued
- May 16, 2008
- completed
- 24
- cumulative oil, bbl
- 382K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · May 2008 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 16, 2008
- Shut in
- —
- 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.
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 |
|---|---|---|---|---|---|---|
| J. Vela Cuellar G. U. B G-4-236906 | Exsun (Lobo Cons.) | Hilcorp Energy Company | 1 | 24 | 382K | Jan 2008 – Apr 2026 |
Gas, mcf lease total
Last 12 months 3,129 · prior 12 2,773(+13%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Chesapeake Operating, Inc.May 2008 → Jul 2014
- 2Hilcorp Energy CompanySep 2014 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 651427-99 | Drill | Chesapeake Operating, Inc. | Dec 13, 2007 | Dec 19, 2007 | Dec 28, 2007 | 14,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 16, 2008 | J. Vela Cuellar G. U. B G-4-236906 | Exsun (Lobo Cons.) | Hilcorp Energy Company | Producing | 11,070 |
Formation tops
As filed on W-2/G-1. Subsea from 333 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 2,040 | -1,707 |
| Big Blue | 6,460 | -6,127 |
| Lobo Unconfority | 8,451 | -8,118 |
| Lobo Unconformity | 8,451 | -8,118 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,780 | 10,554 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 776 | 12.25 | 270 S |
| 7 | 6,823 | 8.75 | 385 S |
| 4.5 | 11,102 | 6.25 | 410 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 | May 19, 2010 | May 30, 2008 | — |
| 00 | Oct 15, 2008 | Jun 19, 2008 | — |
| 00 | Jul 30, 2008 | Apr 30, 2008 | Yes |
| 00 | Jul 24, 2008 | — | — |
Well logs
1 log loaded from the RRC's log index, the latest received Jun 13, 2011. 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 Big Blue, Lobo Unconfority, Lobo Unconformity | TIFF | 6,806 to 11,126 | Jun 13, 2011run Jan 22, 2008 | 8.33 |
"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 42-505-36048 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-36048 → 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/50536048, documented in the API reference.