Based on the data of laboratory experiment,the conclusion about the filter performance of the grail stickled by organic matter can become better when it wrapped up by grails are presented,and the suitable thickness and corresponding grain diameter of grail stickled by organic matter are made certain.

A method of calculating productivity for gravel packed well;

There exist many factors influencing the productivity in gravel packed and sand controlled wells, its correlation is complex, a precision and practical model for prediction is hard to be established by using conventional theory.

Based on what had been done previously in the aspect of pressure losses across perforation and gravel pack, the paper presents a new formula to calculate the pressure losses across perforation and gravel pack,and calculates the skin factor through the introduced popular equation of radial flow.

Field experiment of SLCH gravel packing sand control technology in the horizontal wells;

Influence factors of gravel packing in horizontal well with numerical simulation;

Simulation research on the gravel packing sand control in the horizontal well;