TEXAS · WELLS · MARTIN COUNTY · JOHNSON RANCH LEASE · API 42-317-38917 · DISTRICT 7B
Johnson Ranch #912MS
Martin County · Spraberry (Trend Area) field · Producing · Horizontal
Johnson Ranch #912MS (API 42-317-38917) is a horizontal well in Martin County operated by Cog Operating LLC, completed March 5, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued September 20, 2013, permitted to 8,504 ft.
It was permitted by Rsp Permian, LLC and has since transferred to Cog Operating LLC on the wellbore schedule.
Completion filings report 5 formation tops, including Grayburg, San Andres, Glorieta, Clear Fork.
Its lease has reported 9.4M barrels of oil and 15.7M mcf of gas since November 2007, last reporting volume in April 2026. The lease carries 71 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by RSP Permian, LLC; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active – Extension (X)
- P-5 last filed
- Jun 2, 2026
- Permits on file
- 4,568
- Phone
- (432) 683-7443
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | COG Operating LLC |
| Production reports | COG Operating LLCthrough Apr 2026 |
| Latest permit | RSP Permian, LLCSep 20, 2013 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 8,504
- total depth, ft
- 1
- permits on file
- Sep 20, 2013
- last permit issued
- Mar 5, 2014
- completed
- 9.4M
- cumulative oil, bbl
- 15.7M
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · Nov 2007 THROUGH Apr 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Mar 5, 2014
- 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 lease this well is completed on; they carry 71 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Johnson Ranch O-10-38431 | Spraberry (Trend Area) | COG Operating LLC | 71 | 9.4M | 15.7M | Nov 2007 – Apr 2026 |
Oil, barrels lease total
Last 12 months 569,664 · prior 12 628,142(-9%)
Gas, mcf lease total
Last 12 months 1,270,695 · prior 12 1,078,457(+18%)
Wells named Johnson Ranch
COG Operating LLC's other wells filed under this lease name in Martin 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.
- 1Patriot Resources, Inc.Nov 2007 → Jan 2011
- 2RSP Permian, LLCFeb 2011 → Jul 2018
- 3COG Operating LLCAug 2018 → Apr 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 770113-99 | Drill | RSP Permian, LLC | Sep 17, 2013 | Sep 20, 2013 | Sep 27, 2013 | 12,000 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Mar 5, 2014 | Johnson Ranch O-10-38431 | Spraberry (Trend Area) | COG Operating LLC | Producing | 8,504 |
Formation tops
As filed on W-2/G-1. Subsea from 2,895 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Grayburg | 4,519 | -1,624 |
| San Andres | 4,676 | -1,781 |
| GlorietaGLORIETTA | 5,597 | -2,702 |
| Clear ForkCLEARFORK | 7,210 | -4,315 |
| Spraberry | 8,062 | -5,167 |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,642 | 16,246 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 346 | 17.5 | 370 S |
| 9.625 | 5,550 | 12.25 | 780 S |
| 5.5 | 16,640 | 6.75 | 1,347 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 | Jul 17, 2015 | Jun 11, 2015 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Oct 6, 2015. Neutron. 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 |
|---|---|---|---|---|
| NEUTRON POROSITYSpans Grayburg, San Andres, Glorieta, Clear Fork, Spraberry | TIFF | 0 to 8,100 | Oct 6, 2015run Jan 16, 2014 | 0.10 |
"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 42-317-38917 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-38917 → scanned completion filings
The logs loaded for this well are under Well logs, with the RRC's log search for it. The University Lands library has no per-well link: then paste it into its 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/31738917, documented in the API reference.