ADVANCED AROMATICS L.P.
ADVANCED RESOURCES INTERNATIONAL
AIR LIQUIDE
Air Products and Chemicals Inc.
AKZONOBEL
AL SANEA CHEMICALS
ALBEMARLE
ANADARKO PETROLEUM CORP.
ANCHOR DRILLING FLUIDS USA INC.
APACHE CORP.
AQUA CHEMICALS
Ariel
ASHLAND AQUALON FUNCTIONAL INGREDIENTS
AUBIN
Babcock & Wilcox
BADGER MINING CORP.
BAKER HUGHES
BARIT URALA
BAROID INDUSTRIAL DRILLING PRODUCTS (HALLIBURTON)
BARZAGHI S.R.L.
BASF
Bauer
BEFAR GROUP CO. LTD
BNK PETROLEUM INC.
Bornemann
BORREGAARD LIGNOTECH
BRITISH PETROLEUM CORP. (BP)
BWA WATER ADDITIVES
BYCOSIN AB
C&J ENERGY SERVICES Inc.
CABOT OIL & GAS CORP
CABOT SPECIALTY FLUIDS LTD.
Cameron
CANADIAN ENERGY SERVICES (CES)
CARBO
CAT PUMPS
Caterpillar
CEBO HOLLAND
CECA
CELANESE
Champion Technologies
CHART INDUSTRIES INC.
CHEMTURA (LANXESS)
CHENGDU CATION CHEMISTRY CO. LTD.
CHESAPEAKE ENERGY CORP.
CHEVRON PHILLIPS CHEMICAL
CHIMEC S.P.A.
CHINA MINERAL PROCESSING (CMP) TIANJIN LTD
China National Petroleum Corp.
CLARIANT OIL SERVICES
Clayton Industries
CNPC BOHAI DRILLING ENGINEERING CO. LTD.
COASTAL CHEMICAL CO. LLC
COMSTOCK RESOURCES
CONOCOPHILLIPS
CRODA INTERNATIONAL PLC
Cryogenic Industries
CUADRILLA RESOURCES COMPANY
CYCLOTECH (SUBSIDIARY OF M-I SWACO)
CYTEC INDUSTRIES
Denbury Resources
DEVON ENERGY CORP.
DI-CORP.
DOMINION
DORF KETAL CHEMICALS PVT. LTD.
DOWDUPONT CHEMICAL COMPANY
DP-MASTER MANUFACTURING (S) PTE LTD
Dresser-Rand
DRILL PIPE INTERNATIONAL
LLC.
DRILLING SPECIALTIES CO.
DUPONT (MERGED WITH DOW CHEMICALS)
Eaton
Eco-Tec
ECONOMY POLYMERS & CHEMICAL
ELIXIR PETROLEUM LTD
Elliott
EMERY OLEOCHEMICALS GROUP
ENCANA CORP.
ENERCHEM INTERNATIONAL INC.
ENERGIGAS
ENGENIUM CHEMICALS CORP.
ENVIRONMENTAL BIOTECHNOLOGIES INC.
EOG RESOURCES
EQUITABLE RESOURCES (EQT CORP.)
ExxonMobil
FAIRMOUNT SUPPLY
FLEK (LLC FLEK)
Flowserve
FMC TECHNOLOGIES
FOUNTAIN QUAIL WATER
Gardner Denver
GCHEMICAL CO.
GENERAL ELECTRIC
Generon Innovative Gas Systems
GLOBAL DRILLING FLUIDS & CHEMICALS LTD.
Guild Associates
GULF COAST CHEMICAL
GUMPRO CHEM
HALLIBURTON ENERGY SERVICES Inc.
HAMMELMANN GMBH
Hamon Deltak
Hayward Gordon
HEBEI HUAYUN HONGYE CHEMICAL CORP.
HEXION INC.
HILONG GROUP
Industrial Technology Management
INEOS OLIGOMERS
INNOSPEC
INNOVATIVE CHEMICAL TECHNOLOGIES INC.
INNOVATIVE STEAM TECHNOLOGIES
JIANGYIN LONG BRIGHT DRILL PIPE MANUFACTURE CO. LTD.
JINDAL SAW LTD.
Kemira
Kinder Morgan
KMCO
LAMBERTI S.P.A.
Leistritz
LINDE
LUBRIZOL CORP.
LUKOIL
MARATHON OIL CO.
MARUBENI SPECIALTY CHEMICALS
MASCHINENFABRIK AUGSBURG-NUREMBERG (MAN) SE
Membrane Technology Research
MESSINA INC.
MICRO BAC
MIDWEST CUSTOM CHEMICALS
MIRRICO
MITSUBISHI HEAVY INDUSTRIES
MONTELLO INC.
NABORS INDUSTRIES
NALCO (ECOLAB)
NALCO CHAMPION
NATIONAL CHEMICAL AND PETROLEUM INDUSTRIES
National Oilwell Varco
NAVDEEP CHEMICALS PVT. LTD.
NETZSCH
NEWPARK DRILLING FLUIDS
NEXEN
Nooter/Eriksen
NUR CHEMICALS & ENGINEERING INDUSTRIES CO.
OASIS PETROLEUM NORTH AMERICA
LLC
Occidental
Oil Chem Technologies
OIL COUNTRY TUBULAR LTD.
OPPENHEIMER BIOTECHNOLOGY INC.
PEMEX
PETROCHINA COMPANY LTD.
PETROFRONTIER CORP.
PETROLIAM NASIONAL BERHAD
PIONEER NATURAL RESOURCES CO.
PQ CORP.
PRAXAIR
Premier Energy
PRODUCTION CHEMICAL INTERNATIONAL HOLDINGS LTD.
PUYANG KAILI CHEMICAL CO. LTD.
QINGDAO OCEANVIEW INTERNATIONAL CO. LTD.
QUIMICA APOLLO S.A. DE C.V.
RAMEX AS
RANGE RESOURCES CORP
RE CHEM SERVICES GMBH
REAGENT CHEMICAL AND RESEARCH INC.
RECON TECHNOLOGY
REDA OILFIELD
ROEMEX LTD.
Rolls-Royce
SANDRIDGE ENERGY
SANJEL ENERGY SERVICES
SCHLUMBERGER
SCOMI ANTICOR S.A.
Seepex
SEKISUI SPECIALTY CHEMICALS AMERICA LLC
SETAC CHEMICAL CORP.
SHELL CHEMICALS
SHRIEVE CHEMICAL GROUP
SICHEM
SIEMENS
SINOPEC CANADA
SMC TECHNOLOGIES
SNF Group
SOLVAY RHODIA
SOURCEWATER INC.
SOUTHWESTERN ENERGY COMPANY
STEPAN CO.
Stream-Flo
Sulzer
SUPERIOR DRILL PIPE MANUFACTURING Inc.
TAM International
TBC-BRINADD
TEi-Struthers Wells
TEJAS TUBULAR PRODUCTS Inc.
TENARIS S.A.
TEXAS IRON WORKS CORP.
TEXAS STEEL CONVERSION Inc.
TIORCO (NALCO)
TOTAL S.A.
TRICAN WELL SERVICE
TRUBNAYA METALLURGICHESKAYA KOMPANIYA (TMK) GROUP
U.S. SILICA
Ube
UNIMIN CORP.
UNITECH ASIA-PACIFIC LTD.
UNITED STATES STEEL CORP.
UNITOP CHEMICALS
VALLOUREC S.A.
VASUDHA CHEMICALS
Veolia
VOGT POWER INTERNATIONAL INC.
Weatherford International
WEIR SPM
WELL FLOW LLC
WILDCAT CHEMICALS AUSTRALIA PTY. LTD.
Wood Group
XTO ENERGY INC. (EXXONMOBIL)