WINTER

Oil · District 08 · Lease #40713

Operator: NORTHSTAR OPERATING COMPANY

Cum Oil

287k BBL

Cum Gas

818k MCF

casinghead

Wells

9

Production

2010-12 — 2026-04

Peak Month

2012-11

Production History

Cum Oil: 287,065 BBL Cum Gas: 818,088 MCF

RRC production reported through Apr 2026 · recent months incomplete

Decline Curve Analysis

qi

6,056 BBL/mo

Di (annual)

66.2%

b-factor

0.8

EUR

309,313 BBL

R-squared

0.962

type

hyperbolic

Operator History (from monthly production reports)

2025-09 — 2026-07 N & B OIL AND GAS LLC 11 mo
2017-09 — 2025-08 BLACKBEARD OPERATING, LLC 96 mo
2010-12 — 2017-08 NORTHSTAR OPERATING COMPANY 81 mo

Wells (9)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
9N & B OIL AND GAS LLC16,0002017-12-20
8N & B OIL AND GAS LLC15,2002013-12-05
7N & B OIL AND GAS LLC15,2002013-03-08
6N & B OIL AND GAS LLC15,2002012-09-12
5N & B OIL AND GAS LLC15,0002012-01-24
4N & B OIL AND GAS LLC15,0002011-07-13
1N & B OIL AND GAS LLC39,5002011-06-15
3N & B OIL AND GAS LLC15,0002010-11-03
2N & B OIL AND GAS LLC16,5002010-03-30