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帝国油公司对应用循环蒸汽增产措施水平井较差的蒸汽波及率进行了识别和成功补救。在冷湖区两侧的9个水平井应用水平井循环蒸汽增产(HWCSS)措施中,帝国油公司参与了操作。水平井的完井方式采用局部进入射孔法(LEP),以提高蒸汽在衬管中的分布。对HWCSS的一个区块D36,在首轮3次循环后,利用四维地震和注入分析来描述蒸汽沿水平井段的波及率,结果显示该区块五分之四的油井中蒸汽沿水平衬管方向有很好的波及率。然而,其中有1口井D36-H1显示衬管后半部分的蒸汽分布很少或没有。这种情况的出现,使这口井的采收率得不到保证。对D36-H1修井后,成功地解决了妨碍衬管的出砂问题。随后再注入蒸汽显示,蒸汽分布通过了衬管的绝大部分。
The Imperial Oil Company identified and successfully remedied the poor penetration rate of steam in horizontal wells by using stimulation measures to increase production of circulating steam. Imperial Oil Company took part in the application of Horizontal Well Circulation Steam Production (HWCSS) to nine horizontal wells on both sides of the Cold Lake District. Horizontal well completion methods use local entry perforation (LEP) to increase the distribution of steam in the liner. For a block D36 of HWCSS, using four-dimensional seismic and injection analysis to describe the steam penetration along the horizontal section after three rounds of first round, the results show that steam in four fifths of the block flows along the horizontal liner Direction has a good spread rate. However, one of the wells, D36-H1, showed little or no vapor distribution in the second half of the liner. The emergence of such a situation, the recovery of this well can not be guaranteed. After the D36-H1 workover, the problem of sand production that prevented the liner was successfully solved. Subsequent injection of steam showed that the vapor distribution passed most of the liner.