页岩气水平井最优长度研究

页岩气作为一种新兴能源,得到国家与各个能源公司的重视。我国页岩气资源十分丰富,但是我国的页岩气勘探开发刚刚起步。目前广泛采用水平井开发页岩气藏,采用较大的水平段长度可以获得较高的采收率和较大的采油速度,但成本必然相应地增加,采用较小的水平段长度,可以降低成本,但会影响采油速度和最终采收率。由此看来,对于某一具体的水平井,必然存在一个合理水平段长度。本文从采油工程的角度研究页岩气水平井段最优长度的确定方法。

Optimum Well Length of Horizontal Wells in Shale Gas Reservoir

Shale gas as a new energy resource,the countries and energy companies pay more attention on this resource.The shale gas resources in our country are very rich,but the shale gas exploration and development in China has just started.Currently the horizontal well is used to develop shale gas reservoir,the longer horizontal length can obtain higher recovery and larger oil production speed,but the cost will increase accordingly,using smaller horizontal length,can reduce costs,but will affect oil production speed and the ultimate recovery.So it seems,for a specific of horizontal wells,there must be a reasonable horizontal length.This article determines the horizontal length from the perspective of production engineering.