But using the nitrogen-assisted steam stimulation technology can simplify the process string, reduce the steam injection rate, improve the periodic oil production and back oil recovery rate.

Calculating models for heating radius of cyclic steam stimulation and formation parameters in horizontal well after soaking;

Steam injection design by method of climax descent for cyclic steam stimulation;

Adjustment technology for the middle-last stage of cyclic steam stimulation on Ng5 thin sand heavy oil loop in Zhong2zhong block, Gudao Oilfield;

The dynamic characteristic of producing wells during the huff and puff in the Xinzhuang field,Henan,China;

Analysis of the efficiency of huff and puff in the reservoir of edge water invasion and fault block;

Development and application of sand control agent of high temperature foam resin for wells of huff and puff;

Numerical simulation study for parameter optimization of steam soaking,Xinglongtai reservoir, Du 32 block.;

Determine optimal well shut-in time for steam soaking by applying Producing test.;

Study on features of remaining oil during steam soaking in shallow heavy oil reservoir of Xinjiang;