RAMSEY -44-

Oil // district 10 // lease#27636

op: PRIMROSE OPERATING COMPANY

cum_oil

370k BBL

cum_gas

0 MCF

wells

14

production

1993-01 — 2026-03

peak_month

2001-04

-- production_history

cum_oil: 369,504 BBL cum_gas: 0 MCF

-- decline_curve_analysis

qi

1,880 BBL/mo

Di (annual)

4.5%

b-factor

0.0

EUR

449,860 BBL

R-squared

0.457

type

exponential

-- wells (14)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
12PRIMROSE OPERATING COMPANY14,0002001-02-27
13PRIMROSE OPERATING COMPANY14,0002001-02-27
14PRIMROSE OPERATING COMPANY14,0002001-02-27
11CONOCO INC.14,2001983-03-15
10CONOCO INC.14,2001982-11-19
6CONOCO INC.14,2001982-11-17
7CONOCO INC.14,2001982-10-29
8CONOCO INC.14,2001982-10-29
9CONOCO INC.14,2001982-10-29
4CONOCO INC.14,2001982-10-05
5CONOCO INC.14,2001982-10-05
1CONOCO INC.14,2001982-09-01
2CONOCO INC.14,2001982-09-01
3CONOCO INC.14,2001982-09-01
EOF // data source: Texas Railroad Commission // 2026