The study of eccentric annular clearance Reynolds number and laminar flow area equation under Newtonian fluid condition;

The study of eccentric annular clearance Reynolds number and laminar flow zone calculation methods for power law fluid

The theories result and comprehensive technique measure is introduced to improve side entry well cementing quantity,annular clearance of slim hole and casing,micro-step hole enlargement technology,slim hole cementing technology and complement are dissertated concretely.

This paper addresses sidetrack drilling technology in respects of directional sidetracking inside the casing,optimization of annular clearance,slim-hole cementing of reduced narrow clearance,casing failure control for thermal recovery wells and sidetracking with low cost.

regard eccentric small clearance in pipeline as object of study in this thesis,Approximate calculation formula of flowrate and power lose are presented by experiment and theory analysis,and change law of pressure and power lose in front and behind of cylindrical object because of reynolas number and eccentricity ratio change are presented.

Flow rate distribution of the non-steady flow of second-order fluid in eccentric annulus with the inner cylinder reciprocating axially;

Pressure gradient of unsteady flow of fluid in eccentric annulus with the inner cylinder reciprocating axially;

Computer simulation of screw flow of power-law fluid in eccentric annulus.;