TEXAS · WELLS · ZAVALA COUNTY · MARPICK LEASE · API 42-507-32968 · DISTRICT 01
Marpick #1
Zavala County · Pearsall (Austin Chalk) field · Producing · Horizontal
Marpick #1 (API 42-507-32968) is a horizontal well in Zavala County operated by Cml Exploration LLC, completed May 17, 2013 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit (amended once), issued January 10, 2013, permitted to 6,409 ft.
Completion filings report 3 formation tops, including Olmos, Anacacho, Austin Chalk.
Its lease has reported 77.5K barrels of oil and 6.5K mcf of gas since May 2013, last reporting volume in April 2026.
Operator of record
- Based in
- Austin, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 20, 2025
- Permits on file
- 514
- Phone
- (512) 328-8085
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | CML Exploration LLC |
| Production reports | CML Exploration, LLCthrough Apr 2026 |
| Latest permit | CML Exploration, LLCJan 10, 2013 |
- 6,409
- total depth, ft
- 2
- permits on file
- Jan 10, 2013
- last permit issued
- May 17, 2013
- completed
- 77.5K
- cumulative oil, bbl
- 6.5K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · MAY 2013 THROUGH APR 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- May 17, 2013
- Shut in
- —
- Plugged
- —
Operator's P-5 on the schedule: Active – Extension (X)
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 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 |
|---|---|---|---|---|---|---|
| Marpick O-1-17691 | Pearsall (Austin Chalk) | CML Exploration, LLC | 1 | 77.5K | 6.5K | May 2013 – Apr 2026 |
Oil, barrels lease total
Last 12 months 1,183 · prior 12 1,216(-3%)
Wells named Marpick
CML Exploration LLC's other wells filed under this lease name in Zavala 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.
- 1CML Exploration, LLCMay 2013 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 754109-98 | Drill | CML Exploration, LLC | May 29, 2013 | Jan 10, 2013 | Apr 13, 2013 | 6,700 |
| 754109-99 | Drill | CML Exploration, LLC | Jan 4, 2013 | Jan 10, 2013 | Apr 13, 2013 | 6,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| May 17, 2013 | Marpick O-1-17691 | Pearsall (Austin Chalk) | CML Exploration LLC | Producing | 6,409 |
Formation tops
As filed on W-2/G-1. Subsea from 580 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Olmos | 3,816 | -3,236 |
| Anacacho | 5,273 | -4,693 |
| Austin Chalk | 5,710 | -5,130 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 5,491 | 9,695 | Open hole |
| 5,491 | 9,975 | Open hole |
| 5,491 | 10,064 | Open hole |
| 5,491 | 10,306 | Open hole |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 2,416 | 12.25 | 1,022 S |
| 7 | 5,491 | 8.75 | 801 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 | Aug 8, 2014 | Jun 13, 2013 | Yes |
Well logs
1 log loaded from the RRC's log index, 1 of it with a digital LAS file, the latest received Feb 17, 2017. 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 |
|---|---|---|---|---|
| InductionSpans Olmos, Anacacho | LAS + TIFF | 2,416 to 5,472 | Feb 17, 2017 | 0.89 + 5.33 |
"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 42-507-32968 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-507-32968 → 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/50732968, documented in the API reference.