TEXAS · WELLS · MARTIN COUNTY · SOUTH CURTIS RANCH LEASE · API 42-317-41587 · DISTRICT 7B

South Curtis Ranch #231SD

Martin County · Spraberry (Trend Area) field · Producing · Horizontal

South Curtis Ranch #231SD (API 42-317-41587) is a horizontal well in Martin County operated by Occidental Permian Ltd., completed April 11, 2019 and listed as producing on the RRC schedule.

The RRC has issued one drilling permit, issued July 11, 2018, permitted to 8,595 ft.

Completion filings report 10 formation tops, including Santa Rosa, Yates, Queen, Grayburg.

Its lease has reported 38.4M barrels of oil and 70.7M mcf of gas since November 2010, last reporting volume in April 2026. The lease carries 258 wells, so these are lease totals, not this well alone.

Operator of record

Occidental Permian Ltd.

Based in: Houston, TX
P-5 status: Active (A)
P-5 last filed: Feb 2, 2026
Permits on file: 6,251
Phone: (713) 215-7000

Create operator alert

SOURCE · RRC EWA WELLBORE SCHEDULE

What each RRC source says

Wellbore schedule	Occidental Permian Ltd.
Production reports	Occidental Permian Ltd.through Apr 2026
Latest permit	Occidental Permian Ltd.Jul 11, 2018

8,595: total depth, ft
1: permits on file
Jul 11, 2018: last permit issued
Apr 11, 2019: completed
38.4M: cumulative oil, bbl
70.7M: cumulative gas, mcf

PRODUCTION FROM PDQ LEASE REPORTS · Dec 2010 THROUGH Apr 2026

Regulatory status · RRC wellbore file

Schedule: ON SCHEDULE
Completed: Apr 11, 2019
Shut in: —
Plugged: —

Operator's P-5 on the schedule: Active (A)

Surface location

32.093433, -102.097926 NAD27, as filed

32.093553, -102.098344 WGS84

Google Maps ↗

Permit surface location from the RRC GIS record, referenced to NAD27 as the RRC files it; the WGS84 pair is the same point through NOAA's NADCON grid, and the map link uses it, in Martin County.

Wells nearby

Withinmiles

Every well with a location on file around this well, in any state, nearest first.

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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 258 wells in total, so volumes are shared.Why →

Lease	Field	Reporting operator	Wells	Oil, bbl	Gas, mcf	Reported
South Curtis Ranch O-10-40691	Spraberry (Trend Area)	Occidental Permian Ltd.	258	38.4M	70.7M	Nov 2010 – Apr 2026

Oil, barrels lease total

Last 12 months 2,970,145 · prior 12 4,524,158(-34%)

Gas, mcf lease total

Last 12 months 9,140,112 · prior 12 11,089,227(-18%)

Chain of custody

Every operator that reported production on this well's lease, in order.

1Occidental Permian Ltd.Dec 2010 → Apr 2026

Permits

Permit	Type	Operator	Received	Issued	Spud	Depth
842195-99	Drill	Occidental Permian Ltd.	Jul 10, 2018	Jul 11, 2018	Feb 18, 2019	11,000

Completions

Completed	Lease	Field	Operator	Status	Depth
Apr 11, 2019	South Curtis Ranch O-10-40691	Spraberry (Trend Area)	Occidental Permian Ltd.	Producing	8,595

Formation tops

As filed on W-2/G-1. Subsea from 2,836 ft elevation.Download CSV →

Formation	MD ft	Subsea
Santa Rosa	1,158	1,678
Yates	2,844	-8
Queen	3,875	-1,039
Grayburg	4,620	-1,784
San AndresSAN ANDRES - ACTIVE CO2 FLOOD; H	4,814	-1,978
Spraberry	7,857	-5,021
Cisco	—	—
Dean	—	—
Pennsylvanian	—	—
Wolfcamp	—	—

Perforations

Perforated and open-hole intervals.

From	To	Type
8,917	15,940	Perforated

Casing

Strings as reported, shallowest first.

Casing in	Set at	Hole in	Cement
13.375	1,402	16	975 S
8.625	7,005	10.625	1,555 S
5.5	16,108	7.875	1,820 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	Oct 31, 2019	Jul 23, 2019	Yes

Well logs

1 log loaded from the RRC's log index, the latest received Mar 16, 2022. Gamma ray. 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
Gamma RaySpans San Andres, Spraberry	TIFF	7,017 to 16,116	Mar 16, 2022	0.89

"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.

Find logs withinmiles of this well:List →Map →

Search the well logs loaded into Petrora →

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 42-317-41587 → W-2, G-1, plugging reports, as PDFs
Completion packets for 42-317-41587 → 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.

Nearby wells and their tops

NEAREST 8 LOCATED WELLS WITH TOPS · WITHIN 16 KM

Draw a cross-section

This well's tops beside its 5 nearest neighbors, subsea-aligned so they line up regardless of surface terrain.

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South Curtis Ranch42-317-41584

0.0 KM · Occidental Permian Ltd. · Section with this well →

Santa Rosa	1,158	1,678
Yates	2,844	-8
Queen	3,874	-1,038
Grayburg	4,618	-1,782
San Andres	4,811	-1,975
Spraberry	7,855	-5,019
Cisco	—
Dean	—

10 TOPS · FIRST 8

South Curtis Ranch42-317-41583

0.4 KM · Occidental Permian Ltd. · Section with this well →

Santa Rosa	1,168	1,665
Yates	2,837	-4
Queen	3,878	-1,045
Grayburg	4,642	-1,809
San Andres	4,841	-2,008
Spraberry	7,874	-5,041
Wolfcamp	—
Pennsylvanian	—

10 TOPS · FIRST 8

South Curtis Ranch42-317-41585

0.4 KM · Occidental Permian Ltd. · Section with this well →

Santa Rosa	1,168	1,665
Yates	2,836	-3
Queen	3,879	-1,046
Grayburg	4,643	-1,810
San Andres	4,844	-2,011
Spraberry	7,871	-5,038
Pennsylvanian	—
Wolfcamp	—

10 TOPS · FIRST 8

Nail-Tillman W1M42-317-46771

0.7 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,328	1,547
Yates	2,871	4
Queen	3,857	-982
Grayburg	4,362	-1,487
San Andres	4,562	-1,687
Clear Fork	6,876	-4,001
Spraberry	7,875	-5,000
Wolfcamp	—

11 TOPS · FIRST 8

Nail-Tillman W1N42-317-46772

0.7 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,328	1,547
Yates	2,866	9
Queen	3,858	-983
Grayburg	4,377	-1,502
San Andres	4,570	-1,695
Clear Fork	6,868	-3,993
Spraberry	7,875	-5,000
Dean	9,156	-6,281

11 TOPS · FIRST 8

Nail-Tillman W1O42-317-46773

0.7 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,328	1,547
Yates	2,869	6
Queen	3,861	-986
Grayburg	4,377	-1,502
San Andres	4,572	-1,697
Clear Fork	6,862	-3,987
Spraberry	7,871	-4,996
Wolfcamp	—

10 TOPS · FIRST 8

Nail-Tillman W1P42-317-46774

0.7 KM · Pioneer Natural Res. USA, Inc. · Section with this well →

Santa Rosa	1,328	1,547
Yates	2,875	0
Queen	3,867	-992
Grayburg	4,373	-1,498
San Andres	4,571	-1,696
Clear Fork	6,861	-3,986
Spraberry	7,877	-5,002
Pennsylvanian	—

11 TOPS · FIRST 8

South Curtis Ranch42-317-44209

0.7 KM · Occidental Permian Ltd. · Section with this well →

Santa Rosa	1,175	1,656
Yates	2,831	0
Queen	3,936	-1,105
Grayburg	4,554	-1,723
San Andres	4,784	-1,953
Clear Fork	6,884	-4,053
Spraberry	7,893	-5,062
Dean	9,128	-6,297

10 TOPS · FIRST 8

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/31741587, documented in the API reference.