GAS POWER SYSTEMS CATALOG I Application Considerations
Mechanical Drive Applications Mechanical drive applications of gas turbines and steam turbines use the rotational energy of the machine to drive pumps, compressors, or blowers in an industrial process. Gas turbines are widely used as mechanical drives in the oil and gas industry.
Secondary recovery methods enable producers to extract more oil from older wells. Many of these technologies incorporate injection processes that use engine-driven compressors. GE’s aeroderivative gas turbines are widely used to drive compressors at production sites that typically run on raw gas taken directly from the wellhead for gas lift. The compressors inject gas into an oil well casing and pass it through lift valves at various elevations, causing oil to be lifted out of the well. For gas injection, the compressor injects gas into an oil formation to increase pressure and force more oil and gas out through the well pipe.
Gas transmission pipelines are hundreds of miles long. As gas moves through a pipeline, the pressure in the line drops, which slows the flow of gas. To boost line pressure and keep the gas moving, gas turbine-driven compressors are stationed at various points along the pipeline.
Given the critical role these products play in our customers’ production processes, extremely high reliability and availability, proven technology, and horsepower fit are the primary considerations in the equipment selection for mechanical drive applications. GE’s portfolio offers a variety of robust gas turbines for mechanical drive applications from 20 MW to over 140 MW.
Dominion Increased natural gas production in the United States has producers looking for ways to get their natural gas to global markets. To serve this need, Dominion’s Cove Point Liquefaction Project in Maryland, U.S.A. is modifying the existing liquefied natural gas (LNG) import terminal to become the first on the U.S. East Coast capable of importing and exporting LNG. At the heart of the liquefaction process will be two GE 7E.03 gas turbines driving the refrigeration compressors supplied by GE Oil & Gas. This single-train design will have the capacity to procure approximately 5.25 million metric tons per annum of LNG. With an installed fleet of over 800 units, the 7E.03 equipped with the DLN combustion system for reduced emissions is a proven, reliable performer.
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