WELL · 42-105-32279 · DISTRICT 7
Shannon Estate -B- #40
Crockett County · Shannon (San Andres) field · Injection · Vertical
Shannon Estate -B- #40 (API 42-105-32279) is a well in Crockett County operated by Clark Oil CO., completed June 4, 1982 and listed as injection on the RRC schedule.
The RRC has issued one drilling permit, issued May 3, 1979, permitted to 2,400 ft.
It was permitted by Sun Expl. & Prod. CO.-Midland and has since transferred to Clark Oil CO. on the wellbore schedule.
Its lease has reported 945K barrels of oil and 22 mcf of gas since January 1993, last reporting in July 2026. The lease carries 57 wells, so these are lease totals, not this well alone.
It holds an active disposal or injection permit, with 42.7K barrels injected in the 12 months reported through July 2025.
Operator of record
Permitted by Sun Expl. & Prod. Co.-Midland; the EWA schedule now lists a different operator.
- Based in
- Dallas, TX
- P-5 status
- Active (A)
- P-5 last filed
- Oct 14, 2025
- Phone
- (469) 995-0425
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Clark Oil Co. |
| Production reports | Clark Oil Co.through Apr 2026 |
| Latest permit | Sun Expl. & Prod. Co.-MidlandMay 3, 1979 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 2,400
- total depth, ft
- 1
- permits on file
- May 3, 1979
- last permit issued
- Jun 4, 1982
- completed
- 945K
- cumulative oil, bbl
- 22
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jun 4, 1982
- 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; they carry 57 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Shannon Estate -B- O-9-1277 | Shannon (San Andres) | Clark Oil Co. | 57 | 945K | 22 | Jan 1993 – Jul 2026 |
Oil, barrels lease total
Last 12 months 20,735 · prior 12 25,630(-19%)
Chain of custody
Every operator that reported production on this well's lease, in order.
- 1Energy Production CorporationJan 1993 → Nov 2002
- 2Zephyr Lone Star Oper Co.,l.l.c.Dec 2002 → Dec 2002
- 3Sundown Energy, Inc.Jan 2003 → Jan 2005
- 4Sundown Energy LPFeb 2005 → Jun 2017
- 5Clark Oil Co.Jul 2017 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 50186-99 | Drill | Sun Expl. & Prod. Co.-Midland | May 3, 1979 | May 3, 1979 | May 9, 1979 | 2,400 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-9-1277 | — | — | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 2,010 | 2,190 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 8.625 | 689 | 11 | 325 S |
| 2.375 | 2,255 | — | — |
| 5.5 | 2,350 | 7.875 | 450 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 | Aug 6, 1998 | Jul 16, 1998 | — |
| 00 | Jan 12, 1984 | Jul 13, 1979 | — |
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 42-105-32279 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-105-32279 → 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.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 42.7K
- bbl, last 12 reported months
- 648K
- bbl, all reported
- Jul 2025
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000010196 | H-1 Injection | Active | 6,000 | 1,000 | 2,010–2,190 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 42,710 · prior 12 41,875(+2%)
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/10532279, documented in the API reference.