TEXAS · WELLS · ZAPATA COUNTY · API 42-505-34941 · DISTRICT 04
Jennings Ranch D #21
Zapata County · Charco (9900) field · SWR-10-Well · Directional
- Fields on the latest permit · any of 2
- Charco (9900) · Jennings Ranch (Lobo Cons.)
- 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.
Jennings Ranch D #21 (API 42-505-34941) is a well in Zapata County operated by Hilcorp Energy Company, completed June 23, 2004 and listed as swr-10-well on the RRC schedule.
The RRC has issued one drilling permit, issued March 1, 2004, permitted to 13,082 ft.
It was permitted by Conocophillips Company and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 3 formation tops, including Perdido, Wilcox, Wills Point.
Its 2 leases have reported 128 barrels of oil and 1.07M mcf of gas since June 2004, last reporting volume in August 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Conocophillips Company; the EWA schedule now lists a different operator.
- Based in
- Houston, TX
- P-5 status
- Active (A)
- P-5 last filed
- Mar 27, 2026
- Permits on file
- 3,460
- Phone
- (713) 209-2400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Hilcorp Energy Company |
| Production reports | Hilcorp Energy Companythrough Aug 2026 |
| Latest permit | Conocophillips CompanyMar 1, 2004 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,082
- total depth, ft
- 1
- permits on file
- Mar 1, 2004
- last permit issued
- Jun 23, 2004
- completed
- 128
- cumulative oil, bbl
- 1.07M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · JUL 2004 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 23, 2004
- 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.
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 2 leases this well is completed on; they carry 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Jennings Ranch D G-4-204642 | Jennings Ranch (Lobo Cons.) | Hilcorp Energy Company | 1 | 128 | 1.07M | Jun 2004 – Aug 2026 |
| Jennings Ranch D G-4-204643 | Charco (9900) | Hilcorp Energy Company | 1 | 0 | 0 | Jun 2004 – — |
Gas, mcf lease total
Last 12 months 4,494 · prior 12 4,329(+4%)
Wells named Jennings Ranch D
Hilcorp Energy Company's other wells filed under this lease name in Zapata 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
Operator on the lease's P-4
Each operator named on the P-4 filings for this well's lease (a gas well is its own lease), from the date its filing took effect. The P-4 is filed by lease, so a date before the well was drilled is the lease's.
| Operator | From | To |
|---|---|---|
| Hilcorp Energy Company | Jan 1, 2016 | today |
| Conocophillips Company | Jun 23, 2004 | Jan 1, 2016 |
Reporting production
Every operator that reported production on this well's lease, in order.
- 1Conocophillips CompanyJul 2004 → Dec 2015
- 2Hilcorp Energy CompanyJan 2016 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 542613-99 | Drill | Conocophillips Company | Mar 1, 2004 | Mar 1, 2004 | May 2, 2004 | 13,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jun 23, 2004 | Jennings Ranch D G-4-204643 | Charco (9900) | Hilcorp Energy Company | SWR-10-Well · shut in Jun 1, 2004 | 13,082 |
| Jun 23, 2004 | Jennings Ranch D G-4-204642 | Jennings Ranch (Lobo Cons.) | Hilcorp Energy Company | Producing | 13,082 |
Formation tops
As filed on W-2/G-1. Subsea from 445 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Perdido | 10,664 | -10,219 |
| WilcoxBASE LOWER WILCOX | 11,717 | -11,272 |
| Wills Point | 12,913 | -12,468 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,851 | 11,043 | Perforated |
| 11,804 | 11,850 | Perforated |
| 11,928 | 11,968 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 824 | 12.25 | 305 S |
| 7 | 8,969 | 8.75 | 150 S |
| 4.5 | 13,043 | 6.25 | 430 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 | Feb 22, 2005 | Oct 4, 2004 | Yes |
| 00 | Dec 14, 2004 | — | — |
Well logs
The RRC's map lists this well among those with logs online. Its monthly inventories loaded here, which start in July 2006, list none for it, so none are itemized.
Open the RRC's log search for this well ↗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 42-505-34941 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-34941 → 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/50534941, documented in the API reference.