UPSTREAM—Exploration and Development
Selecting Target Area/Location (e.g. geological analysis, surveys)
Determining Oil and Gas Reservoir Location (e.g. seismic processing, geophysical, software, interpretation)
Preparing site for drilling (e.g. leasing, land or concession)
Drilling the well and evaluating reservoir (e.g. Exploration, contract drilling, drilling fluids, downhole measurement, drilling equipment and products, waste disposal, well testing)

UPSTREAM—Completion and Production
Drilling wells to define reservoir and for production (e.g. Development drilling, directional or horizontal, drilling fluids, downhole measurement, inspection)
Preparing wells for production (e.g. Completion and initial production, pressure pumping, fracturing and acidizing, wellhead, cementing, casing, construction)
Extracting oil and gas from the reservoir (e.g. primary production, well servicing, coiled tubing, compression, artificial lift, processing equipment, reservoir performance, corrosion)
Improving Flow of oil and gas (e.g. Enhanced oil recovery, chemicals, well servicing, 3-D and 4-D seismic, re-entry drilling, plugging and abandonment, environmental remediation)

DOWNSTREAM—Transportation, Processing and Marketing
Wellhead to pipeline transportation (e.g. gathering systems, compression, metering, pumping, construction and equipment, nitrogen services)
Moving and processing (e.g. refining and processing, LNG plants, engineering, construction, environmental services, chemicals, instrumentation, transportation)
Distribution and Marketing (e.g. end products and gas marketing, LNG marketing, feedstocks, petrochemicals, LPG)