WELL · 42-059-34935 · DISTRICT 7
Williams R. D. A #F4
Callahan County · Callahan County Regular field · Vertical
Williams R. D. A #F4 (API 42-059-34935) is a plugged well in Callahan County, plugged February 1, 2013, last operated by Diamond S Masada LLC.
The RRC has issued one drilling permit, issued May 4, 1984, permitted to 750 ft.
It was permitted by R.D. Oil Company and has since transferred to Diamond S Masada LLC on the wellbore schedule.
Completion filings report one formation top, including Tannyhill Sand.
Its lease has reported 3.54K barrels of oil and 20 mcf of gas since January 1993, last reporting in July 2026. The lease carries 7 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by R.D. Oil Company; the EWA schedule now lists a different operator.
Magnolia, TX · P-5 Y, filed Aug 4, 2025 · 8 permits on file · (713) 882-1777
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamond S Masada LLC |
| Production reports | Diamond S Masada LLCthrough Mar 2009 |
| Latest permit | R.D. Oil CompanyMay 4, 1984 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 750
- total depth, ft
- 1
- permits on file
- May 4, 1984
- last permit issued
- Aug 28, 1986
- completed
- 3.54K
- cumulative oil, bbl
- 20
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Jan 1993 THROUGH Jul 2026
Regulatory status · RRC wellbore file
- Schedule
- OFF SCHEDULE
- Completed
- Aug 28, 1986
- Shut in
- —
- Plugged
- Feb 1, 2013
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 7 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Williams, R. D. "A" O-8-478 | Callahan County Regular | Diamond S Masada LLC | 7 | 3.54K | 20 | Jan 1993 – Jul 2026 |
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.
- 1Wylie Bros. Prod. & Drgl. Co,incJan 1993 → Oct 1997
- 2Sojourner Drilling CorporationNov 1997 → Feb 2006
- 3Diamond S Masada LLCMar 2006 → Mar 2009
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 237896-99 | Drill | R.D. Oil Company | May 4, 1984 | May 4, 1984 | — | 750 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| — | — O-8-478 | — | — | — | — |
Formation tops
As filed on W-2/G-1. Subsea from 1,700 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Tannyhill Sand | 380 | 1,320 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 380 | 388 | Perforated |
| 380 | 400 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 4.5 | 400 | 6.75 | 100 S |
| 4.5 | 410 | 6.75 | 100 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 26, 1988 | Apr 11, 1988 | — |
| 00 | Feb 20, 1985 | Dec 12, 1984 | Yes |
| 00 | Feb 13, 1985 | — | — |
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 42-059-34935 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-059-34935 → scanned completion filings
Log images are in archives with no per-well link: the RRC's Neubus archive (2004 onward). then paste it into their search.
Beyond the permit record
RRC UIC permits · H-10 reported volumes
Injection
- 780
- bbl, last 12 reported months
- 16K
- bbl, all reported
- Feb 2010
- reported through
| UIC | Kind | Status | Permitted bbl/d | Max psi | Zone ft |
|---|---|---|---|---|---|
| 000061182 | H-1 Injection | Plugged Feb 22, 2013 | 100 | 190 | 380–388 |
MONTHLY INJECTED, BBL · H-10 · LAST 24 REPORTED MONTHS
Last 12 months 780 · prior 12 780(+0%)
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/05934935, documented in the API reference.