FEM simulation research of axial displacement for expanded solid expandable tubular;

The technique of expandable tubular setting branch well involves the research scope and main techniques of branch well drilling and completion included in national 863 research project "Controllable(closed loop) 3D trajectory drilling technology".

The relationship cone angle solve the problem that the threaded coupling of expandable tubular could,this paper design variable diameter expansion tool based on mechanical principle,the variable diameter expandable tool is consisted of six expandable blocks which can mo.

Influences of make up water pump flow and expansion pipe size upon operating pressure of the hot water heating system;

This article studied with the problems about the size of expansion pipe suitable for the water pumps in district heating system.

Discusses the relations between minimum setting height and the system style,the connection position,and the influence of the connection position of expansion pipe and circulating pipe on the water circulation.

Study and application of repairing the casing-damaged well by using expandable tube;

3-D FEM numerical simulation of the expansion process of expandable tube;

Application of SBT logging to well cementing with expandable tube.

Application of solid expandable tubular system in Jiangsu Oilfield;

Longitudinal metal flow of solid expandable tubular was studied according to stimulant mechanical environment of borehole in this paper.

This article focused on the key technologies in expansion casing which were residual stress and collapsing strength, and they demonstrated the necessity and urgent needing of studying in casing design and applications on engineering.

Residual stress in expansion casing is one of important factors affecting its squeezing and pressure resistance.