Ethanol and environment
In his letter, "Ethanol's Net Energy Balance" (OGJ, Nov. 10, 2003, p. 10), Steve Plotkin seems to have some misconceptions not only of energy balances, but more importantly, of environmental costs and benefits. He argues that ethanol's negative net energy balance means very little and that petroleum fuels also have negative net energy balances.
Mexican Sec. of Energy Felipe Calderon made a strong pitch last month for industry to build import terminals in his country as a way to secure LNG supplies into thirsty North American natural gas markets.
Compliant reserve reports from Canadian firms to
Canadian investors can expect to see more details on oil and natural gas reserves reporting in annual reports starting this spring because securities commissions across Canada have adopted uniform, updated reporting standards for public companies.
The largest operator in the Barnett shale play, Devon Energy Corp., Oklahoma City, in the past year launched a horizontal drilling program in both its Barnett core and non-core areas with encouraging results.
The design and manufacture of equipment in ethane crackers with more than 1 million tonnes/year (tpy) of ethylene production create many problems during engineering, procurement, construction, and start-up. Current technology constraints due to the exclusive use of centrifugal compressors limit ethane cracker capacity to 1.4 million tpy of ethylene in a single compression line.
Conditions in the Caspian and Black seas continue to create problems as well as opportunities for the world's petroleum shipping industry—but not always in expected ways, according to analyses released last month by New York-based shipping consultant Poten & Partners Inc.