The cold heavy oil production ( chop ) technology can be applied to form in - situ high permeable channels by mass sand inflow and allow the heavy oil to be produced by means of foam - oil effects 而稠油出砂冷采技术通过大量出砂形成高渗流通道,并借助于泡沫油的作用等机理来开采稠油油藏,可以较好地解决热采中遇到的问题。