| Axens: Serving the refining and processing industry. Products include processes, catalysts, adsorbents and equipment, and a complete set of services optimizing performance. |
| Baker Hughes Inc.: Services, tools and software for drilling and formation evaluation, well completion, production management and seismic data collection and interpretation |
| Bateman BV Engineering: Providers of engineering, procurement, construction, maintenance, and business services globally. |
| Blair Nelson Enterprises Ltd: Pipeline and facility construction in central and northern Alberta, Canada. |
| Chemical Tracers Inc.: Inject chemical tracers into a single well and then produce fluids from the well to determine residual oil saturation, connate water saturation and fractional flow. |
| Diamond Energy Services Inc.: Oilfield service of gas and oil wells in Saskatchewan and Alberta. |
| DJI & Associates, Inc.: Engineering design and drafting services for the natural gas pipelines. |
| DTN Dimond Control Systems, Inc.: Terminal automation using the Internet as the centralized point of access. |
| Everbrook Systems Ltd: Process design and EPC contractor for water, waste water and oily wastewater treatment to the petrochemical and municipal markets. |
| Flow Petroleum Services Inc.: Contract management of operations, human resources, reporting requirements, logistics and procurement. Providing contract personnel. |
| Fluor Corporation: Providing engineering, procurement, construction, maintenance, and business services worldwide. |
| Fuelcare Ltd.: Provides solutions to prevent and remediate water and microbial contamination in fuel storage systems. Based in the UK. |
| Gastec Technology Products and Services: Providing gas supplies, advanced consumer and commercial technology utilizing gas, and consulting on most efficient utilization of gas. |
| GFI-Petromark: Provider of marking, detection, analysis and control systems for the oil industry. Site contains information about the company and molecular fuel marker technology. |
| Halliburton Company: A major services and construction company, including well logging, well completion, and reservoir engineering. |
| Helix Energy Solutions Group: Provides subsea construction, inspection, maintenance, repair and salvage services to offshore natural gas and oil industry. |
| IROilRigs: Holding company for a group of companies which lease or sell drilling equipment, do contract drilling, and build small-scale refineries. Operating mainly in Indonesia, China, Uzbekistan, and Kazakhstan. |
| Island Operating Company, Inc.: Offshore property management in the Gulf of Mexico. |
| ISN: IT and telecommunications consultants specialising in the oil and gas industry, offshore development and remote office locations. |
| Lanmark Engineering Inc.: Engineering, procurement, construction and management services for western Canada. |
| LiquiFile Services: An electronic tax service for federal and state tax reporting. |
| Midstates Fuel Services: Specializes in cleaning contaminated fuels and light oils. |
| Oilfields Supply Center: Dubai-based company providing onshore facilities, logistical support, and engineering to Persian Gulf area and south Asia. |
| PanTerra Geoconsultants B.V.: Geoscience consultancy group providing services to the international oil and gas industry specializing in integrated reservoir studies and consultancy. Based in the Netherlands. |
| Petraglobal: Expertise in hydraulics, pneumatics and instrumentation. Engineer and supply gas and oil systems on a "turn-key" basis. Spare parts for Petrogas brand systems. |
| PetroAcct, L.P.: Operational accounting, land administration and production accounting outsourcing services. |
| PT WIJAYA PURA: Indonesian company providing complete project services including engineering, project management, construction, and procurement of supplies. |
| Puyang Zhongyuan Sanli Industry Co., Ltd.: Manufacturer of oil drilling auxiliaries in China, offering a diverse range of well drilling, well cementing, and oil extraction chemicals. Also produces glycine. |
| Schlumberger: Global oilfield and information services company with a major focus on energy |
| SDV Oilfield: Worldwide logistical support and management. |
| SMS Group: Provides management, design and logistical services. Also custom manufactures blow out preventers and other hydraulic equipment. |
| Tembi Energy Industries: Providing engineering, procurement and management for oil and gas projects. Based in Iran. |
| WaveTrak Electronics Ltd.: Manufactures pipeline pigging equipment for observation and tracking of pipeline conditions. |
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