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UNOCAL WINS PACIFIC OIL AND GAS WORLD'S "BEST NEW TECHNOLOGY" AWARD FOR HORIZONTAL DRILLING IN SANTA BARBARA CHANNEL

 LOS ANGELES, Aug. 4 /PRNewswire/ -- Unocal announced today that its extended-reach drilling achievements in the Dos Cuadras Field offshore California have earned Pacific Oil and Gas World magazine's award for "Best New Technology."
 A panel of expert judges selected Unocal for top honors in this category, which recognizes techniques or products that find or produce more oil and gas from existing reservoirs. In its July/August issue, Pacific Oil and Gas World cited Unocal for breaking its own world record for horizontal wells, "using techniques it developed and patented to access shallow pay that had not been developed before because of the reach limitations of conventional drilling."
 The award refers to a 1991-1992 program in which Unocal drilled seven horizontal wells in the Dos Cuadras Field, some five miles offshore Carpinteria, Calif. One of these wells, No. C-30, had an average angle of nearly 79 degrees, breaking Unocal's previous world record for highest average angle. The C-30 well extends more than five feet horizontally for every one foot vertically. With this kind of high-angle, extended reach, the seven wells can access oil-bearing zones only 750 to 1,250 feet from the surface.
 "We're pleased we could advance the technology a step further, to add oil reserves and generate some excitement in a field that had been considered past the development stage and into decline," said Dave Payne, Unocal senior drilling engineer and member of the cross- functional team for the Dos Cuadras project. Other team members include team leader Mike Madden, an advanced petroleum engineer; Steve Hart, senior geologist; Scott Hansen, senior production engineer, and drilling foremen Larry Applegate and Rick Reavill.
 By tapping previously inaccessible zones in the Santa Barbara Channel, this technology has enabled Unocal to add some 10 million barrels of reserves since 1990, when its extended-reach program began there. The company first developed the technology in the Netherlands and has since applied it elsewhere, including the Gulf of Mexico and Cook Inlet, Alaska.
 The Dos Cuadras team continues to take the technology even further. "Now we're drilling trilateral wells, which combine three horizontal wells into one," Payne said. "This reduces the number of wells we need to drill and cuts costs by one-third." So far this year, the team has drilled three trilateral wells in the Dos Cuadras Field.
 Pacific Oil and Gas World's award to Unocal was one of five award categories in the magazine's first annual "Best of the Pacific" competition, honoring top projects throughout the Pacific Coast states. The magazine, a Hart publication, has scheduled the awards ceremony for Sept. 16 in Bakersfield, Calif.
 The Dos Cuadras Field is jointly owned by Chevron, Mobil, Texaco, and Unocal.
 -0- 8/4/93
 /CONTACT: Janet McClintock of Unocal, 213-977-5047/


CO: Unocal ST: California IN: OIL SU:

MF-LM -- LA029 -- 9415 08/04/93 13:32 EDT
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Date:Aug 4, 1993
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