资源
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致密油增产一体化服务2014年11月27日
项目挑战:
能新科承担了中石油在青海扎哈泉第一口致密油水平井固井、增产一体化总包服务。该井井深约4,300m, 水平段约800余米。地层破裂压力高,人工裂缝窄,对支撑剂粒径及砂比敏感,易砂堵。

 应对方案:
一、采用整体式套管扶正器和CETAN™弹性自愈水泥浆体系,提高水平段固井质量,满足大规模、大排量套管压裂要求;
二、依托公司非常规油气增产实验室对储层进行快速评价及压裂优化设计,确定储层改造采用ENTI-30滑溜水体系与ENTI-10低浓度瓜胶体系的复合压裂模式;
三、为解决储层缝宽小、易砂堵、闭合应力高难点,采用ENTI-101低密高强支撑剂,在提高支撑剂支撑距离的同时能保证良好的长期导流能力;
四、针对闭合压力高,在国内首次采用连续油管座塞、多簇射孔联座技术。

成果展示:
水平段固井质量良好;国内首次成功应用了连续油管一趟管柱座塞与分簇射孔联座技术;成功实施水平段砂塞封隔技术;该区域第一口套管压裂井,创该油田单井用液量、单井加砂量、施工排量、单井人工裂缝条数、单井使用压裂车数等五项压裂纪录。

 




概览
中石油在青海扎哈泉第一口致密油水平井固井、增产一体化总包服务。
 
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