March 1998
Industry At A Glance
98-03_mwd-murphy_fig4.html (Mar-1998)
A monthly magazine offering industry news, statistics and technical editorial to the oil and gas drilling, exploration and production industry.
Fig. 4. The Early Formation Pressure System (EFPS) can be run in a wiper trip during drilling to perform a series of quick formation pressure tests similar to those run with a wireline formation tester. Conveyed by drill pipe, tool consists of two inflatable packers, a pump and high precision pressure gauges. Drill pipe pressure is used to inflate packers, and pipe reciprocation initiates pressure drawdown. |
Copyright © 1999 World Oil
Copyright © 1999 Gulf Publishing Company