CHALK

Oil · District 10 · Lease #2805

Operator: SAMEDAN OIL CORPORATION

Cum Oil

491k BBL

Cum Gas

0 MCF

Wells

33

Production

1993-01 — 2012-08

Peak Month

1993-01

Production History

Cum Oil: 490,625 BBL Cum Gas: 0 MCF

Decline Curve Analysis

qi

2,997 BBL/mo

Di (annual)

5.1%

b-factor

1.3

EUR

943,155 BBL

R-squared

0.769

type

hyperbolic

Wells (33)

WELL#APIOPERATORPERMITSDEPTHLAST_ISSUED
33SAMEDAN OIL CORPORATION48,5001992-01-08
25WSAMEDAN OIL CORPORATION23,0001978-07-27
32SAMEDAN OIL CORPORATION13,0001978-07-10
13SAMEDAN OIL CORPORATION13,0001978-06-06
17SAMEDAN OIL CORPORATION13,0001978-06-06
12SAMEDAN OIL CORPORATION13,0251978-04-10
15SAMEDAN OIL CORPORATION13,0601978-04-10
3SAMEDAN OIL CORPORATION13,1001978-03-22
1SAMEDAN OIL CORPORATION13,0001978-03-09
4SAMEDAN OIL CORPORATION13,0251978-03-09
4WSAMEDAN OIL CORPORATION13,0251978-03-09
21SAMEDAN OIL CORPORATION13,1001978-02-28
7SAMEDAN OIL CORPORATION13,1001978-02-24
16SAMEDAN OIL CORPORATION13,0001978-02-23
10SAMEDAN OIL CORPORATION13,0001978-02-22
18SAMEDAN OIL CORPORATION13,1001978-02-13
19SAMEDAN OIL CORPORATION13,1001978-02-13
31SAMEDAN OIL CORPORATION13,0001978-01-05
29SAMEDAN OIL CORPORATION13,0001977-10-04
30SAMEDAN OIL CORPORATION13,1001977-10-04
28SAMEDAN OIL CORPORATION13,1001977-09-23
27SAMEDAN OIL CORPORATION13,1001977-09-15
23SAMEDAN OIL CORPORATION13,0001977-06-24
24SAMEDAN OIL CORPORATION13,0001977-06-24
26SAMEDAN OIL CORPORATION13,0001977-06-24
20SAMEDAN OIL CORPORATION13,1001977-06-20
22SAMEDAN OIL CORPORATION13,1001977-06-20
1142-227-02943--------
14W42-227-31031--------
1UW42-227-02940--------
2UW42-227-02536--------
3UW42-227-02543--------
642-227-02542--------
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