叉状压裂多分支水平井电模拟实验

Electrolytic Simulation Experiment of Fractured Multilateral Horizontal Well

近年来,多分支水平井在低渗透油气藏,特别是开采页岩储层、致密砂岩储层开发中起到越来越重要的作用。为了进一步提高产量,可对水平井采用水力压裂的方法使其产生裂缝从而增加油气产量。运用水电模拟原理,分别考察了裂缝长度、渗透条件、分支数量、水平段裸眼及封闭条件等因素对产量的影响。结果表明,裂缝存在最优长度,各分支水平井的产量不同,在分支情况相同时裸眼完井与封闭完井的产量存在差异。

In recent years the multilateral horizontal well plays a more and more important role in the development of low permeability oil and gas reservoir,which is the effective method to exploit shale reservoir and tight sandstone reservoir.In order to further improve the yield,hydraulic fracturing cracks could be used to increase oil and gas production of multilateral horizontal well.Based on the water and electricity resembling principle,the experiment inspected the crack length,osmotic conditions,branch number,the influence of horizontal segment of the open-hole and closed conditions.The results show that there existed the optimal length of cracks and the yield of each branch horizontal well was different;there existed yield differences between open-hole completion and closure completion under the conditions of the same branch.