The decisions or ad- judications of the deep link s cases are often different based on their dissimilar criterions and(or)due to the lack of current law norms.

Based on the introductions of copyright disputes about deep links,this article analyzes the copyright issues which deeth links may lead to.

Its vertical resolution,depth of investigation and environmental effects including shoulder,invasion.

1m and depth of investigation is equivalent to Deep LL3.

,the key parts characteristics of array EWR logging while drilling apparatus were introduced,the selec- tion principle for emission frequency,space length,spacing and other important parameters,and the relations between emission frequency,space length,spacing,coil number, collar structure and apparatus depth of investigation were expounded.

The parking test depth of non-packer flowmeter (electromagnetic flowmeters, ultrasonic flowmeters) in separate zone testing is determined by means of mechanical analysis principle so as to decrease the inaccuracy of parking test depth existing in the testing process and the relevant errors of water nozzle match.