TEXAS · WELLS · MARTIN COUNTY · MARY LANE LEASE · API 42-317-39247 · DISTRICT 7B
Mary Lane #4
Martin County · Spraberry (Trend Area) field · Producing · Vertical
- Fields on the latest permit · any of 3
- Mon Bak (Strawn) · Paul Page (Atoka) · Spraberry (Trend Area)
- Not one formation; the well must be completed in one of them, and no target formation is stated.
Mary Lane #4 (API 42-317-39247) is a well in Martin County operated by Diamondback E&P LLC, completed July 12, 2014 and listed as producing on the RRC schedule.
The RRC has issued one drilling permit, issued March 24, 2014, permitted to 10,841 ft.
It was permitted by Pioneer Natural Res. USA, Inc. and has since transferred to Diamondback E&P LLC on the wellbore schedule.
Completion filings report 10 formation tops, including Yates, Grayburg, Cisco, Devonian.
Its lease has reported 76.5K barrels of oil and 47.7K mcf of gas since April 2013, last reporting volume in August 2026. The lease carries 4 wells, so these are lease totals, not this well alone.
Operator of record
Permitted by Pioneer Natural Res. USA, Inc.; the EWA schedule now lists a different operator.
- Based in
- Midland, TX
- P-5 status
- Active (A)
- P-5 last filed
- May 4, 2026
- Permits on file
- 5,254
- Phone
- (432) 221-7400
SOURCE · RRC EWA WELLBORE SCHEDULE
What each RRC source says
| Wellbore schedule | Diamondback E&P LLC |
| Production reports | Diamondback E&P LLCthrough Aug 2026 |
| Latest permit | Pioneer Natural Res. USA, Inc.Mar 24, 2014 |
The sources disagree, which usually means a transfer or a lease-level production filing by a different entity. Petrora goes with the schedule.
- 10,841
- total depth, ft
- 1
- permits on file
- Mar 24, 2014
- last permit issued
- Jul 12, 2014
- completed
- 76.5K
- cumulative oil, bbl
- 47.7K
- cumulative gas, mcf
PRODUCTION FROM PDQ LEASE REPORTS · MAY 2013 THROUGH AUG 2026
Regulatory status · RRC wellbore file
- Schedule
- ON SCHEDULE
- Completed
- Jul 12, 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 AUG 2026
Texas reports oil by lease, not by well. These are the lease this well is completed on; they carry 4 wells in total, so volumes are shared.Why →
| Lease | Field | Reporting operator | Wells | Oil, bbl | Gas, mcf | Reported |
|---|---|---|---|---|---|---|
| Mary Lane O-10-44667 | Spraberry (Trend Area) | Diamondback E&P LLC | 4 | 76.5K | 47.7K | Apr 2013 – Aug 2026 |
Oil, barrels lease total
Last 12 months 2,637 · prior 12 2,689(-2%)
Wells named Mary Lane
Diamondback E&P 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.
- 1Pioneer Natural Res. USA, Inc.May 2013 → May 2017
- 2Petrolegacy Energy II, LLCJun 2017 → Dec 2018
- 3Endeavor Energy Resources L.P.Jan 2019 → Dec 2024
- 4Diamondback E&P LLCJan 2025 → Aug 2026
Permits
| Permit | Type | Operator | Received | Issued | Spud | Depth |
|---|---|---|---|---|---|---|
| 778878-99 | Drill | Pioneer Natural Res. USA, Inc. | Feb 4, 2014 | Mar 24, 2014 | Apr 17, 2014 | 11,250 |
Completions
| Completed | Lease | Field | Operator | Status | Depth |
|---|---|---|---|---|---|
| Jul 12, 2014 | Mary Lane O-10-44667 | Spraberry (Trend Area) | Diamondback E&P LLC | Producing | 10,841 |
Formation tops
As filed on W-2/G-1. Subsea from 2,779 ft elevation.Download CSV →
| Formation | MD ft | Subsea |
|---|---|---|
| Yates | 2,411 | 368 |
| Grayburg | 4,276 | -1,497 |
| Cisco | — | — |
| Devonian | — | — |
| Ellenburger | — | — |
| Fusselman | — | — |
| Pennsylvanian | — | — |
| Queen | — | — |
| Santa Rosa | — | — |
| Silurian (undifferentiated)SILURIAN | — | — |
Perforations
Perforated and open-hole intervals.
| From | To | Type |
|---|---|---|
| 8,984 | 10,624 | Perforated |
Casing
Strings as reported, shallowest first.
| Casing in | Set at | Hole in | Cement |
|---|---|---|---|
| 13.375 | 381 | 17.5 | 460 S |
| 8.625 | 5,088 | 11 | 870 S |
| 5.5 | 10,841 | 7.875 | 890 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 | Sep 29, 2014 | Sep 5, 2014 | Yes |
Well logs
1 log loaded from the RRC's log index, the latest received Oct 31, 2014. 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 Yates, Grayburg | TIFF | 2,490 to 10,793 | Oct 31, 2014run May 6, 2014 | 6.38 |
"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 42-317-39247 → W-2, G-1, plugging reports, as PDFs
- Completion packets for 42-317-39247 → 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/31739247, documented in the API reference.