Diesel-injection technology saves fuel, reduces emissions

As part of an overall environmental strategy initiated 2 years ago to reduce its environmental "footprint" worldwide, Noble Corp., Houston, has targeted its diesel-powered drilling rigs for total environmental impact monitoring and emissions control. Click here to enlarge imageEarly results of emissions-control efforts have shown that new diesel-injection technology reduces fuel consumption and NOxemissions (Table 1). The use of commercially available fuel injectors, constructed with a "low sac" design, and engine injector-timing retardation are the key elements of the company's rig-engine efficiency program.Nitrogen oxide (NOx) emissions have decreased 30% under the new program. Fue...

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