PETROLEUM DIRECTORY: New depth, pressure marks set at well in Gulf of Mexico - January 25, 2004

Providing coverage of Alaska and northern Canada's oil and gas industryJanuary 2004

Vol. 9, No. 4

Week of January 25, 2004

PETROLEUM DIRECTORY: New depth, pressure marks set at well in Gulf of Mexico

New records were set in December on a ChevronTexaco project drilled by Schlumberger Oilfield Services in the Gulf of Mexico. The well was the Tonga No. 1 exploratory prospect in Green Canyon Block 727.

The companies say the drilling tools sent down from a Transocean Inc. drillship set new marks for measurement-while-drilling and logging-while-drilling. The true vertical depth reached was 31,824 feet, surpassing the prior record by 700 feet. Maximum downhole pressure reached 26,138 pounds per square inch.

“We were able to capture and transmit 100 percent of the data in real time, without lost time or trips, which was critical to the success of this ultra-deep exploration well,” said Paal Kibsgaard, president of drilling and measurements for Schlumberger Oilfield Services.

The drillship Discoverer Deep Seas was working in 4,695 feet of water about 150 miles southwest of New Orleans when the records were set.

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