摘要
用于水平井和多分支井的水基钻井液多含有生物聚合物,其滤饼清除工作一直都是困扰施工作业的难题。总结了近年来国内外新兴的生物酶滤饼清除方法。虽然酶的生物活性目前只能在一定的温度和pH值下作用,但生物酶滤饼破胶剂仍然有很大的发展潜力。如何提高酶破胶剂的使用范围(高温、高pH值)以及提取更优良的特异性酶破胶剂是未来研究的重点。
Mud cakes in horizontal and multilateral wells generally contain biopolymer and are difficult to remove. This paper summarizes the technologies of using bio-enzyme to remove mud cakes newly developed in recent years. Although an enzyme only becomes biologically active under a specific temperature and pH,removing mud cakes using enzymes is still prospective. Research work should be focused on how to improve the performance of enzyme in the future.
出处
《钻井液与完井液》
CAS
2010年第2期74-77,共4页
Drilling Fluid & Completion Fluid
关键词
解堵
水平井
滤饼
破胶剂
生物酶
Unplug
Horizontal well
Mud cake
Gel breaker
Bio-enzyme