TEXAS · WELLS · ZAPATA COUNTY · API 42-505-32235 · DISTRICT 04
Jacoba #1
Zapata County · Haynes (Middle Wilcox Cons.) field · Producing · Vertical
- Fields on the latest permit · any of 2
- Haynes (Middle Wilcox Cons.) · Munoz (Lobo)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Jacoba #1 (API 42-505-32235) is a well in Zapata County operated by Hilcorp Energy Company, completed February 21, 1987 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended twice), issued September 19, 1986, permitted to 13,910 ft.
It was permitted by Houston Exploration Company, The and has since transferred to Hilcorp Energy Company on the wellbore schedule.
Completion filings report 3 formation tops, including Queen City, Wilcox, Wills Point.
Its 2 leases have reported 227 barrels of oil and 2.72M mcf of gas since the record begins in January 1993, last reporting volume in April 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Houston Exploration Company, The; 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 | Houston Exploration Company, TheSep 19, 1986 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 13,910
- total depth, ft
- 3
- permits on file
- Sep 19, 1986
- last permit issued
- Feb 21, 1987
- completed
- 227
- cumulative oil, bbl
- 2.72M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · ON RECORD FROM JAN 1993, THE RECORD'S FIRST MONTH, THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Feb 21, 1987
- 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 APR 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 |
|---|---|---|---|---|---|---|
| Jacoba G-4-123612 | Haynes (Middle Wilcox Cons.) | Hilcorp Energy Company | 1 | 199 | 1.89M | by Jan 1993 – Apr 2026 |
| Jacoba G-4-123919 | Munoz (Lobo) | Hilcorp Energy Company | 1 | 28 | 829K | by Jan 1993 – Apr 2005 |
Gas, mcf lease total
Last 12 months 32,853 · prior 12 33,139(-1%)
Wells named Jacoba
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
Every operator that reported production on this well's lease, in order.
- 1Transamerican Natural Gas Corp.Jan 1993 → Jul 1993
- 2Transtexas Gas CorporationAug 1993 → Jun 1996
- 3Houston Exploration Company, TheJul 1996 → Jun 2007
- 4Forest Oil CorporationJul 2007 → Dec 2012
- 5Hilcorp Energy CompanyJan 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 320677-97 | Drill | Houston Exploration Company, The | Jul 6, 2005 | Sep 19, 1986 | Nov 26, 1986 | 14,000 |
| 320677-98 | Drill | Houston Exploration Company, The | Feb 25, 2003 | Sep 19, 1986 | Nov 26, 1986 | 14,000 |
| 320677-99 | Drill | Transamerican Natural Gas Corp. | Sep 17, 1986 | Sep 19, 1986 | — | 14,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Apr 7, 1987 | Jacoba G-4-123919 | Munoz (Lobo) | Hilcorp Energy Company | Temp Abandoned · shut in Apr 1, 2005 | 13,910 |
| Feb 21, 1987 | Jacoba G-4-123612 | Haynes (Middle Wilcox Cons.) | Hilcorp Energy Company | Producing | 13,910 |
Formation tops
As filed on W-2/G-1. Subsea from 480 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Queen City | 4,150 | -3,670 |
| Wilcox | 7,050 | -6,570 |
| WilcoxLOWER WILCOX | 9,130 | -8,650 |
| Wills Point | 13,460 | -12,980 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 10,584 | 10,676 | Perforated |
| 11,368 | 11,399 | Perforated |
| 12,145 | 13,052 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 10.75 | 748 | 14.75 | 530 S |
| 7.625 | 9,208 | 9.875 | 365 S |
| 5 | 13,910 | 6.75 | 600 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 21, 1987 | Apr 24, 1987 | Yes |
| 00 | May 13, 1987 | — | — |
| 00 | Apr 16, 1987 | Mar 12, 1987 | Yes |
| 00 | Mar 31, 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 42-505-32235 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-505-32235 → 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/50532235, documented in the API reference.