WELL · 42-413-31599 · DISTRICT 7
Cahill #1A
Schleicher County · Carl Cahill (Strawn) field · Vertical
Cahill #1A (API 42-413-31599) is a well in Schleicher County operated by Brooks E. B. JR., completed April 27, 2018.
The RRC has issued 2 drilling permits between 1986 and 2000, permitted to 4,700 ft.
Completion filings report 3 formation tops, including Adams Branch, Canyon, Palo Pinto.
Its 2 leases have reported 4.66K barrels of oil and 131K mcf of gas since January 1993, last reporting in July 2026. The leases carry 2 wells, so these are lease totals, not this well alone.
Operator of record
Dallas, TX · P-5 Y, filed Nov 3, 2017 · 219 permits on file · (214) 528-9953
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Brooks E. B. Jr. |
| Production reports | Robertson Resources, Inc.through Jul 2020 |
| Latest permit | Brooks, E. B., Jr.May 18, 2000 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 4,700
- total depth, ft
- 2
- permits on file
- May 18, 2000
- last permit issued
- Apr 27, 2018
- completed
- 4.66K
- cumulative oil, bbl
- 131K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Apr 27, 2018
- Shut in
- —
- Plugged
- —
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 2 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Olsen-Cahill G-9-179080 | Carl Cahill (Canyon Sand) | Bustamante Oil Company | 1 | 0 | 131K | Aug 2000 – Jul 2026 |
| Cahill O-9-12036 | Carl Cahill (Strawn) | Brooks, E. B., Jr. | 1 | 4.66K | 20 | Jan 1993 – May 2018 |
No volumes reported on these leases in the last three years.
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Olsen Energy Inc.Jan 1993 → Nov 1994
- 2Brooks, E. B., Jr.Dec 1994 → Feb 2018
- 3Brooks, Billee K.Mar 2018 → Jan 2020
- 4Robertson Resources, Inc.Feb 2020 → Jul 2020
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 495071-99 | Recompletion | Brooks, E. B., Jr. | May 15, 2000 | May 18, 2000 | Jun 12, 2000 | 4,600 |
| 304300-99 | Drill | Olsen Energy Inc. | Jul 17, 1986 | Jul 18, 1986 | Aug 8, 1986 | 4,700 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — G-9-179080 | — | — | — | — |
| — | — O-9-12036 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 2,336 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Adams Branch | 3,698 | -1,362 |
| CanyonCANYON SAND | 4,114 | -1,778 |
| Palo Pinto | 4,177 | -1,841 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 4,117 | 4,128 | Perforated |
| 4,332 | 4,335 | Perforated |
| 4,379 | 4,382 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 9.625 | 527 | 12.25 | 240 S |
| 5.5 | 4,600 | 7.875 | 200 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 | May 2, 2018 | Apr 27, 2018 | — |
| 00 | Nov 21, 2000 | Sep 28, 2000 | Yes |
| 00 | Oct 26, 2000 | — | — |
| 00 | Nov 4, 1986 | Oct 17, 1986 | Yes |
| 00 | Oct 31, 1986 | — | — |
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 42-413-31599 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-413-31599 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward) and the University Lands library. 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/41331599, documented in the API reference.