42-317-33235

Final Completion

TARZAN

MARTIN County · District 8 · R K PETROLEUM CORP. · TARZAN (ATOKA)

Permits

Max Depth

12,500 ft

First Permit

1985-09-12

Latest Activity

2016-11-02

Lifespan

31 yrs

Regulatory Status

Schedule

OFF SCHEDULE

Completion

1985-11-07

Shut-In

—

Plugged

1987-09-03

EWA / Production operator mismatch

Scheduling: R K PETROLEUM CORP. ≠ Production: DIAMONDBACK E&P LLC (reported 2025-06)

EWA / Permit operator mismatch

Scheduling: R K PETROLEUM CORP. ≠ Permit: ENDEAVOR ENERGY RESOURCES L.P.

Resolved via: scheduling → R K PETROLEUM CORP.

Production Summary

Cum Oil

— bbl

Cum Gas

— mcf

First Production

2000-01

Last Production

2026-07

Operator History

Chain of Custody

STEPHENS, AUTRY C. 2000-2000→ ENDEAVOR ENERGY RESOURCES L.P. 2000-2024→ DIAMONDBACK E&P LLC 2025-2025

Lease Production

Production is reported at the lease level. View production data, decline curves, and history on the lease page.

Oil

production & DCA →

Formation Tops (14) Elevation 2,845 ft (GR)

CSV

Formation	Top Depth (MD)	Subsea (+above / −below SL)
YATES	2,800 ft	+45 ft
SAN ANDRES	4,375 ft	-1,530 ft
SPRABERRY	7,876 ft	-5,031 ft
UPPER STRABERRY	7,876 ft	-5,031 ft
SPRABERRY	7,882 ft	-5,037 ft
DEAN	9,162 ft	-6,317 ft
DEAN	9,200 ft	-6,355 ft
WOLFCAMP	9,434 ft	-6,589 ft
WOLFCAMP	9,450 ft	-6,605 ft
STRAWN	10,882 ft	-8,037 ft
U/MISS	11,264 ft	-8,419 ft
BEND	11,310 ft	-8,465 ft
MISS (Mississippian)	11,795 ft	-8,950 ft
DEVONIAN	11,922 ft	-9,077 ft

As reported by operators on W-2/G-1 completion filings (RRC wellbore records). Depths are measured depth; names appear as filed. Subsea = reported elevation − measured depth (negative = below sea level; vertical wellbores only). View filings & logs at RRC ↗

Perforations (6)

Interval	Type
7,894–8,094 ft	Perforated
7,894–11,298 ft	Perforated
8,606–8,752 ft	Perforated
9,268–9,428 ft	Perforated
9,698–9,876 ft	Perforated
11,238–11,248 ft	Perforated

Casing (5)

Size	Set Depth	Cement
13.375"	359 ft	350 sx
13.375"	359 ft	360 sx
8.625"	4,350 ft	800 sx
5.5"	11,893 ft	1,000 sx
5.5"	11,950 ft	1,000 sx

Permit History (4)

#818681 Recompletion Final Completion

COX '10' · 12,306 ft

2016-11-02

Spud 2004-08-10

#483857 Reenter Final Completion

COX "10" · 11,900 ft

1999-04-23

Spud 1999-04-23

#483857 Reenter

COX "10" · 10,950 ft

1999-04-23

#284566 Drill Final Completion

TARZAN · 12,500 ft

1985-09-12

Applications (4)

#818681 A ENDEAVOR ENERGY RESOURCES L.P.

received 2016-09-21

#483857 A STEPHENS, AUTRY C.

received 2000-01-07

#483857 A STEPHENS, AUTRY C.

received 1999-04-14

#284566 A R K PETROLEUM CORPORATION

received 1985-08-30

Records & Logs

6 completion filings on record · 1 with log images at RRC.

W-2/G-1 2021-09-16

W-2/G-1 2016-11-29

W-2/G-1 2000-01-12 log on file

W-2/G-1 2000-03-07

W-2/G-1 1985-12-05

W-2/G-1 1985-12-13

Completion packets + logs ↗ Wellbore filings ↗

Completion packets open directly (post-2011 filings include attached logs). Log images and the UL library can't be deep-linked — clicking copies the API for you to paste.

No GPS coordinates yet

Coordinates come from the RRC GIS backfill and usually appear within days of permit issuance. Located in MARTIN County.

Well Details

Well Number: 1
Max Depth: 12,500 ft
Drill Type: Vertical
County: MARTIN
District: 8
Operator: R K PETROLEUM CORP.
Completed: 1985-11-07

Operator

Name: R K PETRO CORP
Location: MIDLAND
P-5 Status: Active (filed 2026-01-08)
Cum Oil (all leases): 18,378,032 bbl
Cum Gas (all leases): 1,326,267 mcf
Total Permits: 529