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"You drill, you keep water flowing down the annulus while
drilling, and you watch the monitor closely. If that pump goes
down even for a minute, that well is flowing or blowing," Hutchi
Hutchison said.
Fortunately, Santa Fe's rigs are designed to deal with these
conditions. Centrifugal pumps force fluid down the backside and
each rig is set up with two 10-in. flow lines. "I'll guarantee when it
flows, it makes you a believer in mother nature," Bauer said.
In the deeper Jurassic horizons, drilling becomes even more
complicated. "They talk about high-pressure/high-temperature
wells in the North Sea, and how they are using breakthrough
technology. We've been drilling these for more than 15 years, it's
nothing new around here, nor in Saudi Arabia," Bauer said.
These zones require 18 ppg muds and higher. "We've been at
22,000 ft drilling with 21 ppg mud," Abbasi said. The deeper wells
require six or seven casing strings because of the thief zones,
isolated gas pockets, and overpressured zones.
In the end, when it comes to dealing with overpressured
zones and lost circulation, it takes a combination of technology
and experienced crew members to effectively deal with geological
conditions unique to Middle East countries.

18 ТРАНСПОРТУВАННЯ МОБІЛЬНИХ
БУРОВИХ УСТАНОВОК

Багатонаціональна робоча сила, котра зацікавлена у
покращенні робіт з бурiння свердловини, досягла неймовірних
результатів в ефективності буріння, використовуючи
пересувні бурові установки під час роботи в складних
пустельних і геологічних умовах.
У першій частині лекції розглянуто три класи бурових
установок, спроектованих для швидкого переміщення вежі й

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