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2000 Press Releases
FOR IMMEDIATE RELEASE: December 21, 2000

HALLIBURTON ENERGY SERVICES PREVAILS IN PATENT INFRINGEMENT JUDGMENT IN TEXAS DISTRICT COURT

HOUSTON, Texas - The United States District Court for the Northern District of Texas has issued a judgment against American Energy Services and in favor of Halliburton Energy Services, Inc., a business unit of Halliburton Company (NYSE: HAL), upholding the validity of its U.S. Patent No. 5,775,425 entitled "Control of Fine Particulate Flowback in Subterranean Wells."

The judgment permanently restrains and enjoins American Energy Services from doing or authorizing, directly or indirectly, activities which infringe upon the '425 patent by itself or in combination with others.

Halliburton Energy Services, Inc. was also awarded monetary damages.

Halliburton Energy Services, Inc. provides products, services, and integrated solutions for oil and gas exploration, development, and production.

Founded in 1919, Halliburton Company is the world's leading diversified energy services, engineering, energy equipment, construction and maintenance company. In 1999, Halliburton's consolidated revenues were $14.9 billion and it conducted business with a workforce of approximately 100,000 in more than 120 countries. The company's World Wide Web site can be accessed at http://www.halliburton.com.


Contact
Zelma Branch or Wendy Hall
Halliburton Company
(p) 713.676.4371

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