Liaohe oilfield was selected to be the experimental unit and developed the viscous oil acquisition system.

This paper expounds the significance of electrical heating in gathering heavy oil, and presents two methods of improving the efficiency of electrical heating: heating with special cable made of nonlinear resistivity material and improving electrical frequency.

Design of variable frequency power supply combined with medium-frequency for viscous oil recovery;

The electrical heating production technique of hollow sucker rod passing through hollow subsurface pump is an effective method for viscous oil and heavy viscous oil recovery.

Viscous oil recovery with steam injection is the most widely used and more profitable recovery technique at present.

Energy conversion model and evaluation criteria of steam injection process in heavy oil recovery;

Current status of heavy oil recovery techniques in Shengli oilfield;

In order to evaluate the injection effect and determine the technical conditions of injecting superheated steam in heavy oil recovery , the flow and heat transfer mathematical model of the superheated steam is established on the basis of heat transfer principle and fluid flow theory.

This article presents a production testing technology applicable to horizontal wells with thermal recovery of heavy oil in shallow layers.

K331 thermosensitive metal expanding packer is an important tool used in thermal recovery of heavy oil.

Study on casing protection in heavy oil thermal recovery well;

Optimal design of steam injection pipe network for heavy oil thermal recovery;

Resistivity drop mechanism during heavy oil thermal recovery;