Summary: This paper was prepared for presentation at the 2005 SPE Technical Symposium of Saudi
Arabia Section held in Dhahran, Saudi Arabia, 14-16 May 2005.
This paper was selected for presentation by the Technical Symposium Program Committee
following review of information contained in full manuscript submitted by the author(s).
Contents of the paper, as presented, have not been reviewed by the Society of Petroleum
Engineers and are subject to correction by the author(s). The material, as presented, does not
necessarily reflect any position of the Society of Petroleum Engineers, its officers, or members.
The maturing Middle Eastern oil fields with natural aquifer
support or water injection can pose a challenging produced
water handling and disposal issues. The increased water-oil
ratio also presents productivity problems ; many wells will die
prematurely due to increased water holdup. The produced
water management cost @US$ 0.50--1.00 per barrel
involving millions of barrels of water (even at a modest WOR
of 50% from current 30-35%) will be in billions due to the
high daily oil production rate envisaged. In this paper, we
focus on various aspects of downhole oil-water separation,
which we believe will lessen the cost significantly. The
downhole water separation technology developed and applied