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Assignor Name : YALE E. KEY INC
Total Assignments: 1
Assignment: 1
Reel/Frame:014059/0689   Pages: 35
Recorded: 04/29/2003
Conveyance: SECURITY INTEREST (SEE DOCUMENT FOR DETAILS).
Assignors
1
KEY ENERGY SERVICES, INC.
Exec Dt:
04/16/2003
2
BROOKS WELL SERVICING, INC.
Exec Dt:
04/16/2003
3
DAWSON PRODUCTION ACQUISITION CORP.
Exec Dt:
04/16/2003
4
DAWSON PRODUCTION MANAGEMENT, INC.
Exec Dt:
04/16/2003
5
DAWSON PRODUCTION TAYLOR, INC.
Exec Dt:
04/16/2003
6
KALKASKA OILFIELD SERVICES, INC.
Exec Dt:
04/16/2003
7
KEY ENERGY DRILLING, INC.
Exec Dt:
04/16/2003
8
KEY ENERGY SERVICES-CALIFORNIA, INC
Exec Dt:
04/16/2003
9
KEY ENERGY SERVICES-SOUTH TEXAS, INC.
Exec Dt:
04/16/2003
10
KEY FOUR CORNERS, INC.
Exec Dt:
04/16/2003
11
KEY ROCKY MOUNTAIN, INC.
Exec Dt:
04/16/2003
12
MISR KEY ENERGY SERVICES LLC
Exec Dt:
04/16/2003
13
Q SERVICES, INC
Exec Dt:
04/16/2003
14
Q.V. SERVICES INC.
Exec Dt:
04/16/2002
15
UNITRAK SERVICES HOLDING, INC.
Exec Dt:
04/16/2003
16
WATSON OILFIELD SERVICE & SUPPLY INC.
Exec Dt:
04/16/2003
17
WELL-CO OIL SERVICE, INC.
Exec Dt:
04/16/2003
18
WELLTECH EASTERN INC.
Exec Dt:
04/16/2003
19
WELLTECH MID-CONTINENT INC
Exec Dt:
04/16/2003
20
YALE E. KEY INC
Exec Dt:
04/16/2003
21
BROOKS WELL SERVICING BENEFICIAL, L.P.
Exec Dt:
04/16/2003
22
DAWSON PRODUCTION PARTNERS, L.P.
Exec Dt:
04/16/2003
23
KEY ENERGY DRILLING BENEFICIAL, L.P.
Exec Dt:
04/16/2003
24
Q.V. SERVICES BENEFICIAL, L.P.
Exec Dt:
04/16/2003
25
UNITRAK SERVICES, L.P.
Exec Dt:
04/16/2003
26
WELLTECH MID-CONTINENT BENEFICIAL, L.P.
Exec Dt:
04/16/2003
27
YALE E. KEY BENEFICIAL, L.P.
Exec Dt:
04/16/2003
28
AES ACQUISTION, L.P.
Exec Dt:
04/16/2003
29
Q PRODUCTION SERVICES, L.P.
Exec Dt:
04/16/2003
30
QUALITY OIL FIELD SERVICES, L.P.
Exec Dt:
04/16/2003
31
QUALITY TUBULAR SERVICES, L.P.
Exec Dt:
04/16/2003
32
Q.V. SERVICES, LLC
Exec Dt:
04/16/2003
33
Q.V. SERVICES OF TEXAS, L.P.
Exec Dt:
04/16/2003
34
BROOKS WELL SERVICING, LLC
Exec Dt:
04/16/2003
35
KEY ENERGY DRILLING LLC
Exec Dt:
04/16/2003
36
Q ENERGY SERVICES, L.L.C.
Exec Dt:
04/16/2003
37
Q OIL & GAS SERVICES, LLC
Exec Dt:
04/16/2003
38
UNITRAK SERVICES, LLC
Exec Dt:
04/16/2003
39
YALE E. KEY, LLC
Exec Dt:
04/16/2003
40
WELLTECH MID-CONTINENT LLC
Exec Dt:
04/16/2003
Assignee
1
PNC BANK, NATIONAL ASSOCIATION
249 FIFTH AVENUE
PITTSBURGH, PENNSYLVANIA 15222
Properties
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
App #
 
Pat #
Pub #
Intl #
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5711382
NONE
08506955
 
5988299
NONE
08623041
 
6079490
NONE
09058477
 
6168054
NONE
09200490
 
6377189
NONE
09281864
 
6212763
NONE
09342564
 
6276449
NONE
09533511
 
6253849
NONE
09534599
 
6209639
NONE
09534601
 
6213207
NONE
09535239
 
6241020
NONE
09535555
 
6164493
NONE
09566166
 
6374706
NONE
09768551
 
6728638
US20020156582
09838857
 
NONE
US20020153134
09839080
 
NONE
US20020156730
09839103
 
NONE
US20020156670
09839411
 
6826492
US20020156591
09839444
 
6578634
US20030042020
09945924
 
6758095
US20030188584
10046688
 
7006009
US20030183382
10113609
 
7004456
US20040065874
10263630
Correspondence name and address
BUCHANAN INGERSOLL, P.C.
MICHAEL L. DEVER
301 GRANT STREET, 20TH FLOOR
PITTSBURGH, PA 15219

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