UNIVERSITY UNIT '5-20-21'

Oil · District 7C · Lease #18281

Operator: ENDEAVOR ENERGY RESOURCES L.P.

Cum Oil

1.1M BBL

Cum Gas

13.6M MCF

casinghead

Wells

9

Production

2013-03 — 2026-04

Peak Month

2015-04

Production History

Cum Oil: 1,079,944 BBL Cum Gas: 13,599,363 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

38,111 BBL/mo

Di (annual)

93.1%

b-factor

0.5

EUR

941,968 BBL

R-squared

0.926

type

hyperbolic

Operator History (from monthly production reports)

2025-01 — 2026-07 DIAMONDBACK E&P LLC 19 mo
2013-03 — 2024-12 ENDEAVOR ENERGY RESOURCES L.P. 142 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
1SWDIAMONDBACK E&P LLC111,0002014-02-26
1HDIAMONDBACK E&P LLC112,0002012-08-23
2HDIAMONDBACK E&P LLC112,0002012-08-23
3HDIAMONDBACK E&P LLC212,0002012-08-23
4HDIAMONDBACK E&P LLC212,0002012-08-23
5HDIAMONDBACK E&P LLC212,0002012-08-23
6HDIAMONDBACK E&P LLC212,0002012-08-23
7HDIAMONDBACK E&P LLC112,0002012-08-16
8HDIAMONDBACK E&P LLC112,0002012-07-03