Other than natural gas, Chesapeake also operates in oil production, oil and natural gas marketing, natural gas compression, rig drilling and trucking, which form the rest 25% of the stock price.

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Onshore natural gas transmission compression means any combination of compressors and associated equipment involved in moving natural gas from production fields or natural gas processing plants through transmission pipelines to natural gas distribution pipelines and storage facilities.

FORBES: Just Tell the "Fracking" Truth

Focusing on high-margin drilling technology and tools, Duroc-Danner spun off the drill-pipe business as Grant Prideco in 2000 and sold off capital-intensive barge rig and gas-compression businesses.

FORBES: Magazine Article

Focusing on high-margin drilling technology and tools, Duroc-Danner spun off the drill-pipe business as Grant Prideco (nyse: GRP - news - people ) in 2000 and sold off capital-intensive barge rig and gas-compression businesses.

FORBES: Oil Gleaners

Onshore natural gas transmission compression.

FORBES: Just Tell the "Fracking" Truth

That lightweight gas needs exotic compression schemes and entirely novel fueling stations.

FORBES: Field of Dreamers

Both Otto cycle(spark ignition) and Diesel cycle engines(compression ignition) engines can be made to run on multiple fuels(petroleum, ethanol, natural gas) The cost is only nominally more than single fuel engines.

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