裸眼井分段酸压技术在肯基亚克盐下油藏的应用

Application of openhole segregated acid fracturing techniques in Kenhkiak sub-salt reservoirs

赫安乐 张合文 黄先雄 邵建鸿 张宝瑞

HE Anle ZHANG Hewen HUANG Xianxiong SHAO Jianhong ZHANG Baorui

中国石油勘探开发研究院廊坊分院，河北廊坊　065007 阿克纠宾油气股份公司，哈萨克斯坦阿克纠宾　030000

Langfang Branch, Research Institute of Petroleum Exploration and Development, PetroChina, Langfang 065007, China 　2. Aktyubin Oil/Gas Ltd, CNPC, Aktyubin 030000, Kazakstan

为了提高肯基亚克盐下碳酸盐岩储层动用程度，增加单井产量，对该油藏5口裸眼井进行了封隔器分段酸压先导性试验。首先确定了与储层配伍性较好且满足深度改造、均匀改造的清洁转向酸体系作为主体酸，同时对气举、完井和酸压裂一体化管柱结构进行了优化，并通过优选分段数、封隔器坐封位置和施工参数，顺利完成了现场施工，并取得了明显的增产效果。该工艺可为同种类型的海内外油藏改造提供经验。

To improve the producing reserves and well production of the sub-salt carbonate reservoirs in Kenhkiak, segregated acid fracturing pilot tests were taken on 5 openhole wells in the reservoir. The host acid was determined to be the clean steering acid with good formation compatibility and ability of stimulating deeply and uniformly. Then the integrated pipe structure of gas lifting, completion, and acid fracturing was optimized. The field operation was completed with obvious stimulation effect through optimizing section amounts, packer positions, and technical parameters. The technique provided valuable experience for stimulating the same type of reservoirs.