用循环时差法确定井眼漏层深度

Using the Difference of Circulating Time to Determine Depth of the Permeable Leakage Formation in Hole

地层漏失是石油钻井过程中经常遇到的事故。对裂缝性漏失和溶洞性漏失的地层深度很容易断定 ;而对渗透性漏失地层 ,其深度在现场往往不容易判断。不借助其它仪器 ,通过采集有关钻井参数并综合计算 ,即可推出漏失层位的深度 ;从而可解决野外施工现场因等待仪器而组织停工的问题 ,为处理事故赢得时间、创造良机。

The leakage of formation is one of the problems which often occurs in the procession of drilling hole.It is not difficult to decide the leakage depth of the crushed formation or the cavern porosity formation.But for the permeable formation,it is not easy to determine the depth on working site.This paper introduces several kinds of methods to measuring the depth of permeable leakage formation,like using curve fitting,turbine wheel rotation,etc.A method is introduced to compute the depth of the permeable leakage formation through complex calculation with gathering drilling data without other devices,which can short the shut down time caused by waiting for measuring instruments in the working site and wins time to handle the trouble down.