对钻孔漏失层分类的研究与探讨

STUDY AND DISCUSSION ON THE CLASSIFICATION OF CIRCULATION LOSS ZONE

目前的漏失层分类方案很难适用于错综复杂多因素影响的孔漏情况。针对这一缺陷,本文通过对影响“似漏失量”的四个主要因素进行分析后提出以“似漏失量”的大小来划分钻孔漏失层类型。该方案简单、实用、便于推广。

The current classification schemes for circulation loss zone are hardly suitable for the complicated circulation loss cases which are influenced by many factors.Directed at this defect. this paper proposes that the quasi-circulation loss be used to clssify the circulation loss zone through a discussion of the four main factors affecting quasi-circulation loss.This classification is simple and practical, easy to apply and disseminate.