北美常压页岩压裂开发的启示

Enlightenment from Ordinary-pressure Shale Fracturing Development in North America

中国常压页岩气藏储量丰富,但开发难度大,压后产能不足,成为制约中国页岩气规模开发的一大难点。北美油田对其常压、低压储藏,如伍德福德、马塞勒斯、霍恩河等,在常规水平井和多级压裂的基础上,尝试了超长水平井技术、小井距立体开发技术、同步压裂技术、大砂量压裂优化技术等,取得了较好的增产、降本效果。北美油田针对常压、低压储藏的这些最新开发技术,对中国常压页岩储层的开发具有一定的指导意义。

Although China has rich reserves of ordinary--pressure shale gas reservoir, its development is dif- ficult and its capacity after pressure is insufficient, limiting scale development of shale gas in China. On the basis of conventional horizontal wells and multistage fracturing, technologies including overlength horizontal well technology, small--well--spacing stereo development technology, synchronous fracturing technology and large--proportion sand fracturing optimization technology are tried in ordinary--pressure and low-- pressure reservoirs in North America and better results are achieved in increasing production arid decreasing cost. These up--to--date development technologies have great guiding significance in China＇s ordinary--pressure shale reservoir develooment.