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U.S. PATENT AND TRADEMARK OFFICE
Electronic Information Products Division
Patent Technology Monitoring Team (PTMT)

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2008 Utility Patent Grants,
By Calendar Year of Grant
With Patent Counts Based on Primary Patent Classification

- Explanation of Data -

Rank Ordered Listing of Organizations Receiving 5 or More Utility Patents During the Period
Having Primary Classification In

Class 166, Wells (shafts or deep borings in the earth, e.g., for oil and gas)

( technology class is determined by the primary classification assigned to the patent- see 'Explanation of Data' )
( patent ownership is determined by the first-named assignee listed on a patent )

The following table displays first-named assignees and counts of their associated patents, as distributed by the year of patent grant.
First-Named Assignee 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 Total
~INDIVIDUALLY OWNED PATENT 71 37 53 50 55 42 43 49 61 37 25 53 52 39 43 77 58 56 88 52 57 64 70 77 71 80 67 58 52 73 54 81 126 70 78 69 50 77 75 82 2472
HALLIBURTON ENERGY SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17 52 84 97 97 85 81 105 93 166 172 122 1171
SCHLUMBERGER TECHNOLOGY CORPORATION 29 21 20 22 10 8 8 4 3 5 1 2 4 3 1 9 5 7 6 4 5 12 8 6 6 10 5 3 4 11 26 30 64 65 62 79 55 80 89 112 904
SHELL OIL COMPANY 32 48 25 31 27 17 13 8 15 8 5 5 4 2 8 5 6 19 9 13 9 3 12 12 7 42 21 11 2 0 3 16 13 18 24 66 44 86 34 27 750
BAKER HUGHES INCORPORATED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 17 34 12 16 21 29 31 18 26 43 27 37 56 38 46 47 48 52 51 77 728
HALLIBURTON CO. 10 15 8 5 10 25 11 11 12 11 6 5 19 10 21 27 21 36 58 25 27 29 27 28 40 98 48 52 11 14 0 0 0 0 0 0 0 0 0 0 720
TEXACO INC. 9 17 18 9 18 50 42 24 19 41 31 43 27 7 6 20 22 14 25 15 15 9 13 10 12 11 10 6 4 6 7 13 6 1 0 0 1 0 0 0 581
MOBIL OIL CORP. 34 22 17 11 7 8 14 7 13 11 2 10 2 2 20 30 21 29 27 28 35 39 21 23 30 28 22 14 4 2 5 2 3 0 1 0 0 0 0 0 544
WEATHERFORD/LAMB, INC. 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 2 2 3 16 9 24 18 34 46 74 53 91 63 52 490
OTIS ENGINEERING CORPORATION 10 5 8 14 5 7 9 10 13 15 11 7 21 13 25 26 16 12 19 16 25 18 17 25 21 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 369
MARATHON OIL COMPANY 17 23 21 31 20 17 9 5 3 2 1 1 5 2 3 12 10 5 9 12 10 6 13 9 1 10 10 2 5 7 2 4 2 4 2 3 0 2 2 2 304
ATLANTIC RICHFIELD COMPANY 2 5 7 5 7 6 6 11 5 1 2 0 0 0 8 9 7 11 23 13 9 10 11 6 12 22 19 12 6 4 8 16 8 0 0 0 0 0 0 0 271
EXXON PRODUCTION RESEARCH COMPANY 24 18 24 16 19 12 12 14 12 14 8 7 7 2 7 10 7 7 10 6 3 1 3 2 1 4 1 1 0 1 4 1 0 0 0 0 0 0 0 0 258
PHILLIPS PETROLEUM COMPANY 26 19 26 8 14 7 8 11 10 17 1 6 10 3 2 9 12 11 5 2 3 3 2 3 2 7 1 2 1 2 2 2 3 3 1 0 0 0 0 0 244
BAKER INTERNATIONAL CORP. 9 2 5 5 1 11 10 3 8 8 5 9 16 11 22 40 21 15 13 7 6 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 228
CHEVRON RESEARCH & TECHNOLOGY CO. 9 4 13 4 3 6 4 6 7 9 0 3 2 0 8 8 6 8 4 4 13 12 17 10 10 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 175
UNION OIL COMPANY OF CALIFORNIA 4 10 5 10 7 5 10 2 10 11 5 5 2 2 4 6 6 4 7 4 4 3 7 13 9 6 2 0 1 2 2 1 2 1 1 0 0 0 0 0 173
CONOCO, INC. 5 3 3 2 6 8 10 6 9 4 2 6 6 1 6 3 4 4 5 12 10 6 10 4 9 3 5 1 2 1 0 1 1 3 0 0 0 0 0 0 161
DRESSER INDUSTRIES, INC. 5 5 9 3 12 12 11 11 9 4 5 7 2 3 3 5 3 2 8 8 5 1 1 6 2 0 2 1 0 0 3 3 3 0 0 0 0 0 0 0 154
ABB VETCOGRAY INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 7 14 15 6 2 9 9 10 11 11 11 11 12 2 0 0 0 132
BJ SERVICES CO 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 4 0 4 6 3 2 6 5 7 8 5 17 2 15 25 18 129
CAMCO INCORPORATED 5 0 3 3 8 11 3 2 1 3 6 4 5 2 2 5 12 20 11 9 7 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 125
INSTITUT FRANCAIS DU PETROLE 0 1 1 0 1 0 1 0 0 2 0 0 3 2 2 4 0 2 6 5 3 12 6 8 11 15 1 2 3 7 3 2 8 0 2 0 0 5 1 1 120
AMOCO CORPORATION 0 0 0 0 0 0 0 0 4 7 4 8 12 10 5 4 5 5 12 4 4 2 3 4 2 0 10 5 0 5 3 0 0 0 0 0 0 0 0 0 118
DOW CHEMICAL COMPANY 13 10 10 5 13 13 5 3 4 8 7 4 7 3 1 2 4 0 1 2 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 118
HYDRIL COMPANY L.P. 0 2 1 2 9 10 8 5 6 5 0 1 9 3 0 7 7 7 3 0 2 2 0 0 0 1 0 0 1 1 0 2 1 2 2 0 0 4 4 2 109
CAMCO INTERNATIONAL INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 4 7 8 7 7 6 0 3 16 18 25 4 0 0 0 0 0 0 107
SMITH INTERNATIONAL INC. 0 0 0 0 0 0 0 2 0 1 1 0 0 0 1 1 3 3 0 0 0 0 3 1 0 0 4 0 1 3 4 3 4 5 10 5 7 6 10 11 89
HUGHES TOOL COMPANY 0 1 0 0 1 1 0 0 0 0 1 0 1 5 7 14 11 18 14 11 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 87
VETCO GRAY INC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 5 7 10 5 1 0 0 0 1 0 1 0 0 0 0 0 0 8 10 8 9 69
FMC CORPORATION 3 2 0 1 2 0 0 0 3 2 2 1 1 0 2 1 0 1 1 0 1 1 4 2 3 1 0 1 0 12 6 4 1 9 0 0 0 0 0 0 67
DOWELL SCHLUMBERGER INCORPORATED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 10 6 9 8 5 6 3 7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 57
FMC TECHNOLOGIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 15 8 5 10 8 3 56
CITIES SERVICE COMPANY 2 2 13 11 10 5 3 3 2 0 0 1 0 0 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 55
DRIL-QUIP, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 0 2 1 5 5 0 1 2 0 1 3 4 0 3 10 2 6 2 4 53
OCCIDENTAL OIL SHALE, INC. 0 0 0 0 0 0 0 0 1 12 12 6 9 1 3 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 46
CDX GAS, LLC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 4 6 6 11 9 4 44
EXXONMOBIL UPSTREAM RESEARCH COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 5 3 9 7 4 4 1 7 43
PAN AMERICAN PETROLEUM CORPORATION 18 9 11 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 42
PETROLEO BRASILEIRO S.A. PETROBRAS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 1 1 1 3 5 4 0 1 1 0 5 2 3 5 0 1 1 1 3 42
CAMERON IRON WORKS, INC. 2 0 1 1 1 1 2 2 2 2 5 4 0 5 2 4 2 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 41
UNITED STATES OF AMERICA, DEPARTMENT OF ENERGY 0 0 1 2 1 2 0 4 4 4 0 1 1 2 5 4 3 0 1 1 1 0 0 0 0 1 0 1 0 0 0 0 0 0 0 1 0 0 0 0 40
BROWN OIL TOOLS, INC. 4 1 3 2 2 7 2 3 6 5 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 38
COOPER CAMERON CORPORATION, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 4 5 4 6 7 3 2 3 0 0 37
VETCO, INC. 0 1 3 5 6 2 8 4 1 1 0 1 1 0 0 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 35
VARCO I/P, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 4 6 7 9 4 34
STANDARD OIL CORPORATION (INDIANA) 0 0 0 0 0 0 2 5 0 0 0 1 0 0 1 14 6 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 32
AVA INTERNATIONAL CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 3 5 3 2 4 2 0 0 2 3 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 31
AMOCO PRODUCTION COMPANY 0 0 7 6 9 6 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30
ARMCO INC. 0 1 0 0 1 1 0 0 1 0 2 3 9 3 1 6 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 30
GULF RESEARCH AND DEVELOPMENT COMPANY 6 1 2 3 1 2 0 0 2 0 1 1 6 2 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 29
CAMERON IRON WORKS USA, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11 14 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 28
TIW CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 4 3 0 0 1 1 2 3 1 3 2 3 27
COOPER INDUSTRIES INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 8 4 5 5 3 0 0 0 0 0 0 0 0 0 0 0 0 0 26
EXXON RESEARCH + ENGINEERING CO. 1 1 0 1 0 0 0 1 0 0 0 0 2 1 1 6 2 2 5 2 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26
SOCIETE NATIONALE ELF AQUITAINE (PROD.) 0 0 0 0 0 0 0 0 0 4 1 1 1 0 0 1 2 3 1 4 3 0 1 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26
SUN OIL COMPANY OF PENNSYLVANIA 2 2 0 3 6 5 4 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26
TEXAS IRON WORKS, INC. 0 1 0 1 0 0 1 2 0 1 0 0 2 0 1 0 0 0 3 2 3 4 5 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 26
WEATHERFORD U.S., INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 2 1 2 1 0 3 5 4 2 1 0 0 0 0 0 0 0 0 0 0 26
ENVENTURE GLOBAL TECHNOLOGY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 8 12 24
ALBERTA OIL SANDS TECHNOLOGY & RESEARCH AUTHORITY 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 1 0 0 1 1 0 6 2 0 1 2 0 0 1 2 0 3 0 0 0 0 0 0 0 23
GEO VANN, INC. 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 6 10 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 23
BYRON JACKSON INC. 6 6 3 0 3 1 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22
DEN NORSKE STATS OLJESELSKAP A.S. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 6 0 1 2 0 2 0 2 0 5 0 2 0 0 0 0 0 22
GETTY OIL COMPANY 2 0 0 0 1 3 6 2 0 0 0 0 1 2 0 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22
HALLIBURTON SERVICES 0 0 0 0 1 0 0 0 0 0 0 1 1 8 1 0 1 0 1 0 4 0 0 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22
UOP 0 0 1 0 0 0 0 1 0 2 1 0 1 2 4 6 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 22
GEARHART INDUSTRIES, INC. 0 0 0 1 2 0 3 1 0 4 0 0 0 1 1 2 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21
GRAY TOOL COMPANY 3 2 2 3 4 2 0 0 0 2 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21
INTEVEP, S.A. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 2 1 2 1 0 0 0 0 0 0 1 5 3 0 0 0 0 1 21
NALCO CHEMICAL COMPANY 1 2 1 0 5 1 0 0 1 0 0 0 1 0 0 0 0 0 1 0 2 1 2 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21
THE BRITISH PETROLEUM COMPANY P.L.C. 0 0 2 0 0 0 0 0 1 0 0 1 0 0 1 0 1 0 2 1 2 1 7 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 21
IN SITU TECHNOLOGY, INC. 0 0 0 0 0 0 1 2 3 7 1 1 0 0 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
TENNECO OIL COMPANY 2 6 5 2 2 1 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 20
WESTERN COMPANY OF NORTH AMERICA 0 0 3 0 0 0 0 1 0 0 0 1 1 0 0 1 0 0 2 1 0 0 3 1 2 1 2 0 1 0 0 0 0 0 0 0 0 0 0 0 20
CONOCOPHILLIPS COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7 3 2 4 1 2 19
EXPRO NORTH SEA LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 6 5 2 0 0 1 1 1 0 1 19
WOOD GROUP ESP, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 4 2 0 4 2 5 19
TRI-STATE OIL TOOL INDUSTRIES, INC. 0 0 1 1 2 1 0 0 0 0 0 0 1 1 2 1 0 0 0 1 2 1 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 18
CAMPAGNIE FRANCAISE DES PETROLES, SOCIETE ANONYME 0 0 0 0 0 1 0 0 1 1 1 3 0 0 0 4 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17
FRANK'S CASING CREW & RENTAL TOOLS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 1 1 4 0 2 1 3 2 17
KVAERNER OIFIELD PRODUCTS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 5 0 2 4 3 0 0 0 0 17
ROCKWELL MANUFACTURING COMPANY 5 3 2 1 5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 17
FRANK'S INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 1 3 2 2 1 1 0 2 16
LYNES, INC. 2 4 4 0 1 1 0 2 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16
SHELL OFFSHORE INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 3 2 0 1 0 5 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 16
TESCO CORP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 2 0 5 4 3 16
TEXACO EXPLORATION CANADA LTD. 0 0 0 0 0 1 1 4 3 5 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 16
CHEVRON U.S.A. INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 1 0 1 1 1 1 1 1 2 1 15
DAVIS-LYNCH, INC. 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 1 2 2 2 0 1 1 0 1 0 0 0 3 0 1 0 0 0 0 15
NL INDUSTRIES INC. 0 0 0 1 0 1 0 0 0 1 0 0 2 0 3 2 2 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 15
SPECIALISED PETROLEUM SERVICES GROUP LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 3 7 15
STINGER WELLHEAD PROTECTION, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9 6 15
WESTERN ATLAS INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 1 1 5 2 0 0 1 1 1 0 0 0 0 0 0 0 15
WORLD ENERGY SYSTEMS, INCORPORATED 0 0 0 0 0 0 0 2 2 2 1 1 0 0 0 0 0 1 1 0 1 0 0 1 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 15
CAMERON INTERNATIONAL CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 3 6 14
DOWELL, A DIVISION OF SCHLUMBERGER TECHNOLOGY CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 7 3 1 0 0 0 0 0 0 0 0 0 0 14
IIT RESEARCH INSTITUTE 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 4 3 0 1 0 1 2 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14
LINDSEY COMPLETION SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 4 2 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 14
VARCO INTERNATIONAL, INC. 0 0 0 0 0 2 2 1 0 0 0 0 0 0 1 4 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 14
WESTERN WELL TOOL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 2 1 2 2 0 2 3 0 14
M-I L.L.C 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 3 2 1 1 2 2 13
CALGON CORPORATION 2 0 1 1 2 1 0 3 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
E2 TECH LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 2 6 1 12
ELF EXPLORATION PRODUCTION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 3 5 0 1 0 0 0 0 0 12
PETROLITE CORPORATION 0 0 1 0 2 2 1 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 12
Q.E.D. ENVIRONMENTAL SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 0 1 0 2 3 0 2 0 0 0 0 0 0 1 0 0 0 0 1 12
BAROID TECHNOLOGY, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 1 0 1 2 1 2 0 1 0 0 0 0 0 0 0 0 11
BOWEN TOOLS, INC. 2 0 0 3 0 0 1 0 0 0 0 0 0 0 0 0 0 0 2 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
COOK TESTING CO. 6 1 1 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
HALLIBURTON LOGGING SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 1 2 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
INTELLISERV, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 5 5 0 11
PES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 4 1 3 0 0 0 0 0 0 0 0 11
SAUDI ARABIAN OIL COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 2 0 0 2 6 11
STANDARD OIL COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 1 0 2 0 3 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 11
STREAM-FLO INDUSTRIES LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 1 2 3 1 1 0 1 11
BESTLINE LINER SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 2 0 4 1 0 0 1 0 0 0 0 0 0 10
DEEP OIL TECHNOLOGY INC. 0 0 0 2 0 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 10
GAS RESEARCH INSTITUTE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 0 0 0 1 1 2 2 0 0 0 0 0 0 0 0 10
NATIONAL-OILWELL, L.P. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 1 1 3 2 1 10
OCEANEERING INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 0 0 1 0 0 1 4 0 10
ROCKWELL INTERNATIONAL CORPORATION 0 2 3 0 0 2 0 0 0 0 0 0 0 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 10
SENSOR HIGHWAY LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 1 1 3 0 0 10
TAM INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 1 1 0 0 1 1 0 0 0 0 0 1 0 0 1 0 10
BJ HUGHES INC. 0 0 0 0 0 0 0 0 2 0 0 0 1 5 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
JET RESEARCH CENTER, INC. 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 1 0 0 0 2 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
KUDU INDUSTRIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 5 0 1 0 1 0 0 0 0 9
PETROLEUM ENGINEERING SERVICES LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 2 0 3 0 1 0 0 0 0 0 0 0 9
PLEXUS OCEAN SYSTEMS LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 0 0 0 0 0 0 0 0 0 2 0 0 1 0 0 3 0 0 9
REGAN FORGE AND ENGINEERING COMPANY 2 2 1 1 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
SPECIALIZED PETROLEUM SERVICES LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 4 2 0 0 0 0 0 0 9
TRW INC. 0 0 0 0 0 0 0 0 2 0 0 1 0 2 1 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 9
UNITED STATES OF AMERICA, DEPARTMENT OF THE INTERIOR 1 1 0 1 0 0 0 1 0 0 0 0 1 0 0 1 0 0 0 0 0 1 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 9
VASTAR RESOURCES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 4 2 1 0 0 0 0 0 0 0 9
ALBERTA RESEARCH COUNCIL INC. 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 0 1 0 0 0 1 8
B + W INCORPORATED 2 0 4 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
CITIES SERVICE OIL AND GAS CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 6 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
CONTROL FLOW INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 1 2 1 1 8
CTC INTERNATIONAL CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 3 0 0 0 0 0 0 0 0 0 0 0 0 0 8
DEUTSCHE TEXACO AKTIENGESELLSCHAFT 0 0 0 1 1 0 0 1 2 0 0 0 2 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
DOUBLE-E INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 1 0 1 0 0 0 1 0 1 0 0 0 1 0 0 1 8
DOWNHOLE PRODUCTS (UK) LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 2 1 1 1 1 0 0 8
EXXON CHEMICALS PATENTS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 3 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
KOBE, INC. 0 0 0 0 1 1 0 1 0 0 1 1 2 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
LION CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6 0 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
MSI MACHINEERING SOLUTIONS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 2 2 0 8
RAYTHEON COMPANY 0 0 0 0 0 0 0 0 0 0 2 0 1 1 0 2 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 8
REEVES WIRELINE TECHNOLOGIES LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 2 0 0 1 0 8
SOLINST CANADA LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 0 0 0 1 0 1 1 0 0 1 0 8
WELLDYNAMICS INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 0 0 1 2 1 8
ALLAMON INTEREST 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 4 1 1 0 0 7
COMPLETION TOOL COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
CORE LABORATORIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 2 1 1 7
COUPLER DEVELOPMENTS LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 2 0 0 1 2 7
ELECTRO-PETROLEUM INC. MESNE 0 0 0 0 0 1 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 7
ENTREPRISE DE RECHERCHES ET D'ACTIVITIES PETROLIERES (E.R. 0 0 1 0 1 2 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
GLOBAL MARINE PERFORMANCE, INC. 0 1 1 1 1 0 1 0 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
J. C. KINLEY COMPANY 1 1 0 0 2 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
MACCO OIL TOOL COMPANY, INC. 0 0 0 0 0 4 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
MIDWAY FISHING TOOL COMPANY 1 0 0 0 0 0 0 0 0 0 0 0 0 2 1 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
MWL TOOL AND SUPPLY COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
ORYX ENERGY COMPANY 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
OSCA, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 1 1 0 1 0 1 2 0 0 0 0 0 0 7
PRODUCTION SPECIALTIES, INC. 0 0 0 0 0 1 0 0 6 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
STEWART + STEVENSON SERVICES, INC. 1 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 0 0 1 1 0 1 0 0 0 0 0 0 7
TELEDYNE INDUSTRIES, INC. 0 0 0 0 0 0 1 2 2 0 0 0 0 0 0 0 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
TEXACO CANADA RESOURCES, LTD. 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 2 1 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
UNIVERSITY OF CALIFORNIA, THE REGENTS OF 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 1 1 0 2 0 0 1 7
VETCO OFFSHORE, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 4 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
WEATHERFORD INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 3 0 0 1 0 0 0 0 7
WESTBAY INSTRUMENTS, INC. 0 0 0 0 0 0 0 0 0 0 0 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 0 0 0 0 0 0 7
WESTINGHOUSE ELECTRIC CORP. 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 7
WILSON INDUSTRIES, INC. 0 1 0 0 0 1 0 0 0 3 1 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 7
A-Z INTERNATIONAL TOOL COMPANY 0 0 1 0 0 1 0 1 0 1 0 0 0 0 0 0 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
ABB OFFSHORE SYSTEMS LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 1 3 0 0 0 0 6
BAKER MANUFACTURING CO., INC. 0 0 0 1 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 6
CANADIAN FRACMASTER, LTD. 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 6
CARMEL ENERGY, INC. 0 0 0 0 0 0 0 2 0 0 0 0 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
COMBUSTION ENGINEERING INC. 0 0 0 0 0 0 0 1 0 0 0 1 1 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
COMPLETION SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 1 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
DRILLFLEX 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 1 0 0 0 0 0 0 6
DUHN OIL TOOL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 2 0 1 0 0 2 6
ELECTROTHERMIC CO. 0 2 3 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
GULF OIL CORPORATION 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
HOUSTON ENGINEERS, INC. 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 0 0 0 0 0 0 0 0 0 6
ICI AMERICAS INC. 0 0 0 0 0 4 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
IEG INDUSTRIE-ENGINEERING GMBH 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
LAFLEUR PETROLEUM SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 0 0 0 0 0 0 0 0 0 1 0 0 0 6
MASX ENERGY SERVICES GROUP, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
NATURAL RESERVES GROUP, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 2 1 1 0 0 0 0 0 0 0 0 0 6
OFFSHORE ENERGY SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 3 1 0 0 0 6
OIL & GAS RENTAL SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 3 1 0 0 1 0 0 6
PACKERS PLUS ENERGY SERVICES INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 3 0 2 6
SHELL WESTERN E&P INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 0 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
SONSUB, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 1 0 1 0 0 0 0 0 1 0 0 6
STATOIL ASA 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 1 6
UNION CARBIDE CORPORATION 1 0 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
W K M WELLHEAD SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 1 2 1 0 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 6
WADA VENTURES 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 6
AIR PRODUCTS AND CHEMICALS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 2 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
AMERICAN CYANAMID COMPANY 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ARROW OIL TOOLS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 1 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
BATTELLE MEMORIAL INSTITUTE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 1 0 0 0 0 1 0 0 0 0 0 5
BIP TECHNOLOGY, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 0 0 0 5
CLEANSORB LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 0 0 1 0 2 0 0 0 0 5
CLEARWATER, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 0 0 0 0 0 0 1 1 0 0 0 0 0 5
COILED TUBING ENGINEERING SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 1 0 0 0 0 0 5
DEL NORTE TECHNOLOGY, INC. 0 0 0 0 0 0 1 0 0 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
DEVIN INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 2 1 5
DRILEX SYSTEMS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
EASTERN OIL TOOLS PTE, LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 4 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ELECTRIC WIRELINE SPECIALTIES, INC. 0 3 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
ENSCI INCORPORATED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 1 0 2 1 0 0 0 0 0 0 0 0 0 0 0 5
ERC INDUSTRIES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 1 0 0 0 0 0 1 0 5
EXPLORATION AND PRODUCTION SERVICES (NORTH SEA) LTD. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 3 0 0 1 0 0 1 0 0 0 0 0 0 0 0 0 5
GENERAL ELECTRIC COMPANY 0 0 0 0 1 0 0 0 2 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
GENERAL MOTORS CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 0 1 1 0 1 0 0 0 0 0 0 0 0 0 5
HUELS AKTIENGESELLSCHAFT 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
HYDRA-RIG, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 1 0 0 0 0 0 1 2 0 0 0 0 0 0 0 5
KELLOGG BROWN & ROOT, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 2 0 0 0 0 5
LAYNE + BOWLER COMPANY 1 0 3 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
MAGNA CORPORATION 0 0 0 0 0 0 0 0 0 0 0 1 1 3 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
MAKO RENTALS, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 0 5
MUTH PUMP LLC 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 1 0 1 0 1 0 0 0 0 0 5
NORSK HYDRO A/S 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 3 0 0 0 0 0 0 0 0 0 0 0 0 0 5
OWEN OIL TOOLS LP. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 0 0 2 5
PALL CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 1 0 2 0 0 0 0 0 0 0 0 0 5
PETROQUIP ENERGY SERVICES, LLP 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5 5
PRODUCTION CONTROL SERVICES, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 4 5
REGAN OFFSHORE INTERNATIONAL, INC. 0 0 0 0 0 0 2 1 0 1 0 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
SANDIA CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 1 0 1 1 0 0 0 0 5
SCIENTIFIC DRILLING INTERNATIONAL, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 2 1 0 0 0 0 0 0 1 0 0 0 0 5
SOCIETE NATIONALE ELF AQUITAINE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 0 2 0 1 0 0 0 0 0 0 0 0 0 0 0 0 5
SPECIALTY MACHINE & SUPPLY, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 2 0 0 0 0 0 0 0 0 0 0 5
SPECIALTY RENTAL TOOL & SUPPLY CO., INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 2 0 0 5
SPS-AFOS GROUP LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 2 2 0 0 0 0 0 5
SUBSEA EQUIPMENT ASSOCIATES LIMITED 0 0 0 0 0 1 1 1 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TECHNIP FRANCE 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 2 1 0 5
TEXACO DEVELOPMENT CORPORATION 0 0 0 0 0 0 1 0 1 0 1 1 0 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TEXACO TRINIDAD, INC. 0 1 0 0 0 0 1 1 1 0 1 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 5
TEXAS UNITED CHEMICAL COMPANY, LLC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 2 0 0 0 0 0 0 2 0 0 0 0 0 0 0 1 0 0 0 0 0 0 0 5
UENTECH CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 0 1 1 1 0 0 0 0 0 1 0 0 0 0 0 0 0 0 0 0 5
VARCO SHAFFER, INC. 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 0 1 0 0 0 1 5
WELL-EQUIP LIMITED 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 0 1 0 1 2 0 0 0 0 0 0 0 0 0 0 0 0 5
XEROX CORPORATION 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 1 1 0 0 0 0 0 1 0 0 1 0 0 0 0 0 0 5



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