With the deepening of exploration and development of Bohai oil fields,marginal oil fields account for more and more of the newly discovered oil fields,and their reserves are small in scale and difficult to use.At the same time,the Bohai Sea is greatly affected by ecological protection,waterway and anchorage,and the economic and effective development is limited.Based on this,from the per-spective of reducing costs and increasing efficiency,the conventional well thinning optimization is carried out,and the economic and technical feasibility analysis is carried out.It is proved that the conventional well thinning has very significant economic feasibility and technical operability.In addition,the research and development of corresponding supporting tools are carried out for non-stan-dard wells,a new four-blade drill and a multi-layer fracturing filling pipe string are developed,which provides technical support for the smooth implementation of thin well.This study provides technical reference for the design of non-standard well holes in Bohai oil-field and theoretical basis for efficient development of marginal oilfield.
关键词
瘦身井/边际油田/井身结构/四刀翼钻头
Key words
slimming well/marginal oil field/well body structure/four blade bit
维普
万方数据