Study and application of refracturing technique in SN oilfield;

Research and application of shielding temporary sealing and refracturing techniques in BZ block of Junggar basin;

Fuzzy control of the discharge pressure of sand pump during refracturing;

Application of Re-fracturing Technology in Low-permeability Oilfield of Jianghan

Part of the research on oil well re-fracturing was carried out in Jianghan Oilfield and as well as the recognition of re-fracturing mechanism in the oilfield were introduced.

stress field induced by existed fractures and oil production in SN Oilfield is simulated in this paper, it is proven that the azimuth of new fractures created by re-fracturing will be different from that of existed fractures on the base of principle of minimum principal stress.

The paper presents case study on re-fracture treatments and reorientation measurement results by surface tiltmeter mapping in the Daqing oilfield.

Research on multiple fracturing technology in cooperation with Halliburton Co.Ltd.;

Computation model of total stress field while multiple fracturing

The multiple fracturing technique is one of effective approaches to enhance the production of the low permeability reservoir.

Study and application of repeated fracturing in Liaohe Oilfield;

Application of Repeated Fracturing with Multiple-echelon Turning in Reforming Old Wells of Low Permeability Oilfields;