低孔裂缝性致密储层暂堵转向酸压技术及应用

Drilling & Production Technology(2014)

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Abstract
塔里木盆地库车山前井具有超深、超高压、高地应力、高温的特点,储层主要为低孔裂缝性砂岩,厚度中-巨厚,完井后都需要经过改造才能获得高产.针对裂缝发育的储层,通过酸压改造可以获得高产.为了提高中~巨厚储层纵向改造均匀程度和改造效果,采用暂堵转向缝网酸压技术,取得了很好的改造效果.暂堵转向剂在超高压高温酸压过程中能够憋压暂堵转向,达到纵向均匀改造的目的,施工完成后在高温条件下水解,暂堵剂失去暂堵功能,释放被堵储层产能,从而达到增产的目的.
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