英语翻译
这是一篇石油英语的翻译,所在段落如下：
Although EOR applications are prdominantly employed onshore,technologies are being developed to expand the reach of EOR to offshore applications.Challenges that presently exist for offshore EOR include economics of the development; the weight,space and power limiations of retrofiting existing offshore facilities; and fewer wells that are ;more widely spaced contributing to desplacement,sweep and lag time.
关于EOR（提高采收率）的一篇文章,这是最后一个自然段,将offshore EOR所面临的的一些困难,最后一句话实在不懂,