埕北油田综合调整实践

Comprehensive adjustment of development in Chengbei oilfield

埕北油田位于渤海海域,是一个已有20多年开发历史的稠油油田,其主要开发层系为古近系东营组上段和新近系馆陶组。该油田进入高含水阶段以后,先后实施了东营组主力油层剩余油挖潜、东营组顶部油层上返补孔以及馆陶组新含油层系滚动开发等多项综合调整措施,已累积增油超过14万m3(截至2005年4月),取得了显著的经济效益。埕北油田综合调整实践为我国海上稠油油田开发后期综合调整积累了丰富的经验,建立了一套高效开发的模式。

Chengbei oilfield located in Bohai sea is a viscous field with a development history more than twenty years, and its main developed pays are in Paleogene Dongying formation and Neogene Guantao formation. After reaching the development period with high water cut,several adjustment measures have been taken in the field, such as to tap residual-oil potential in main zones of Dongying formation,to reperforate upwards at the top zone of Dongying formation and to develop new zones progressively in Guantao formation, by which the additional oil of 14.09 × 10^4m^3 has been produced by April, 2005, making great economic benefits. The comprehensive adjustment of development in Chengbei oilfield has provided rich experiences for later adjustment of developing offshore viscous oilfields in China,and has established a development model with high efficiency.