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U.S. PATENT AND TRADEMARK OFFICE
Patent Technology Monitoring Team (PTMT)

Patenting In Technology Classes,
Breakout By Organization

Count of 1969 - 2010 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 2009 2010 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 55 102 2629
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 81 123 1375
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 91 176 1171
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 77 114 152 994
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 36 30 816
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 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 0 0 581
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 30 51 571
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 0 0 544
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 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 0 1 305
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 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 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 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 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 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 0 0 173
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 20 23 172
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 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 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 0 0 132
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 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 1 1 122
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 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 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 0 0 109
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 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 3 9 101
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 7 18 94
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 0 0 87
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 0 0 67
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 8 12 63
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 4 2 62
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 0 0 57
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 2 1 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 0 0 55
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 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 1 0 45
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 1 0 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 0 0 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 0 0 41
ENVENTURE GLOBAL TECHNOLOGY 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 0 0 0 0 0 1 0 3 8 12 8 9 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 0 0 40
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 2 3 39
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 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 0 0 37
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 10 12 37
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 3 18 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 0 0 35
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 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 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 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 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 0 0 29
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 1 1 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 0 0 28
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 3 9 27
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 1 6 26
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 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 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 0 0 26
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 6 5 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 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 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 0 0 26
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 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 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 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 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 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 0 0 22
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 0 1 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 0 0 22
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 2 2 21
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 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 0 0 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 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 0 0 21
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 0 1 20
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 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 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 0 0 20
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 1 0 20
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 2 2 18
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 1 1 18
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 3 2 18
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 1 6 18
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 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 0 0 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 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 0 0 17
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 0 2 17
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 0 1 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 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 0 0 16
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 3 2 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 0 0 16
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 2 0 16
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 4 6 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 0 0 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 0 0 15
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 0 0 14
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 1 1 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 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 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 0 0 14
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 2 4 14
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 0 0 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 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 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 0 0 12
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 0 2 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 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 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 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 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 0 0 11
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 1 0 11
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 0 1 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 0 0 11
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 4 2 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 0 0 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 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 0 0 10
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 0 2 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 0 0 10
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 1 3 10
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 0 1 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 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 0 0 10
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 0 1 10
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 0 1 9
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 0 0 9
BJ SERVICES COMPANY 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 0 0 0 0 0 0 0 0 9 9
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 2 1 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 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 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 0 0 9
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 1 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 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 0 0 9
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 1 2 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 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 0 0 9
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 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 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 0 0 8
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 1 0 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 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 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 0 0 8
E. I. DU PONT DE NEMOURS AND COMPANY 0 1 0 0 0 0 0 0 0 0 0 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 1 0 4 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 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 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 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 0 0 8
NORSK HYDRO 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 1 0 1 0 0 0 0 2 2 2 8
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 3 0 8
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 3 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 0 0 8
RHODIA 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 0 2 0 6 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 0 0 8
XTREME COIL DRILLING 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 0 0 0 0 0 0 0 0 0 2 2 2 2 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 0 0 7
BP CORPORATION NORTH AMERICA 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 1 0 2 1 2 7
CLEARWATER INTERNATIONAL 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 0 0 0 0 2 0 2 2 1 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 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 0 0 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 0 0 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 0 0 7
GE IONICS, 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 2 0 2 0 3 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 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 0 0 7
KELLOGG BROWN & ROOT 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 0 0 0 0 0 1 1 3 2 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 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 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 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 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 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 0 0 7
ROBBINS & MYERS ENERGY SYSTEMS, 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 0 0 0 0 0 0 0 0 0 0 0 1 0 0 0 1 1 1 3 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 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 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 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 0 0 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 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 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 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 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 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 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 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 0 0 6
BILCO TOOLS, INC. 0 0 0 0 0 0 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 0 1 0 2 0 1 1 6
BP EXPLORATION OPERATING COMPANY 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 1 0 0 0 1 1 1 2 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 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 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 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 0 0 6
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 0 1 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 0 0 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 0 0 6
FMC KONGSBERG SUBSEA AS 0 0 0 0 0 0 0 0 0 0 0 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 0 1 2 6
GEOSIERRA, 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 0 0 0 0 1 0 1 3 1 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 0 0 6
HAMDEEN INCORPORATED 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 0 2 0 2 1 1 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 0 0 6
HUDSON 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 2 0 2 1 1 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 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 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 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 0 0 6
NATIONAL-OILWELL VARCO, 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 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 1 5 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 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 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 0 0 6
OMEGA COMPLETION TECHNOLOGY 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 1 0 0 1 0 0 1 2 6
PRECISION 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 0 0 0 1 2 3 6
RATTLER 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 1 0 0 0 0 2 0 0 0 0 0 1 0 1 1 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 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 0 0 6
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 0 1 6
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 1 0 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 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 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 0 0 6
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 1 0 6
ABI TECHNOLOGY, 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 1 0 0 0 1 1 2 0 5
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 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 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 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 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 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 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 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 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 0 0 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 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 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 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 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 0 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 0 0 5
FIKE 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 1 0 0 0 1 2 0 0 0 0 1 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 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 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 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 0 0 5
HYDRIL USA MANUFACTURING 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 0 0 0 0 0 0 1 1 3 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 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 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 0 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 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 0 0 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 0 0 5
PINE TREE 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 0 0 0 0 0 0 0 0 5 5
PIONEER ENERGY, 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 0 0 2 3 5
PRECISION COMBUSTION, 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 0 0 1 2 1 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 0 0 5
RESLINK AS 0 0 0 0 0 0 0 0 0 0 0 0 0 0 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 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 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 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 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 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 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 0 0 5
SUBSURFACE TECHNOLOGIES INCORPORATED 0 0 0 0 0 0 0 0 0 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 1 0 1 5
SUPERIOR ENERGY SERVICES, 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 0 0 1 1 0 0 0 1 0 0 0 2 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 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 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 0 0 5
TOTAL SEPARATION SOLUTIONS, 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 0 0 0 0 0 2 1 2 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 0 0 5
UNIVERSITY OF SOUTHERN CALIFORNIA 0 0 0 0 0 0 0 0 0 0 0 1 0 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 1 1 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 0 0 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 0 0 5


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