Abstract: In consideration of overall development difficulties of Xijiang 23-1 oilfield that is a typical loose sand reservoir with bottom water, many new technologies have been applied, such as pipe base completion, reasonable sand production, reservoir damage prevention and drilling for improving quality of horizontal well interval, etc. These technologies to overcome horizontal drilling buildup difficulty, formation damage and bottom water coning allow the overall development of Xijiang 23-1 oilfield to be finally successful. Accordingly, a series of development technologies and experiences suitable for such a reservoir are accumulated.

Key words: bottom water reservoir, bottom water coning, loose sandstone, reasonable sand production, pipe base, formation damage prevention