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适合文昌油田中高含水筛管井的复合酸液体系

Guang XIA,Chunxiang LIU,Jiyong ZHOU

Drilling Fluid & Completion Fluid（2018）

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Abstract
南海西部文昌油田群部分油井已进入中高含水期,储层具有胶结疏松、非均质性强等特点,多采用悬挂筛管完井,酸化时很难实现均匀布酸,往往出现增液不增油的现象.针对储层特点及完井方式,研发出了WZX-02自转向酸+WHS-05缓速酸的复合酸液体系,该体系能有效抑制酸液进入高渗层,避免酸化后含水大幅上升.该体系在文昌M油田D井进行了先导性试验,酸化前产液量为68 m3/d,产油量为32 m3/d,含水53％,酸化后产液量为207m3/d,产油量为117m3/d,含水43％,增产效果显著,可为类似中高含水筛管井酸化提供借鉴.
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