Therefore the methane recovery rate can be improved.

Factors Influencing Filtration Results of Suspended Solid on Produced Water;

Bacteria Growth in Produced Water Owing to Injectivity Profile Modification Treatment with Xanthane/Chromium Gel;

Progress of produced water reinjection treatment in oilfield;

Type C and type D are integrated to propose new water drive characteristic curves,which are the water drive characteristic curve expression equivalent completely equivalent to classic water drive characteristic curve,and able to reflect the relation of water cut-recovery degree,the shape a.

For holding the accurate recovery degree prior to polymer- flooding concerns the result evaluation and application on polymer-flooding in the second type oil layers, on the basis of comparing the advantages and disadvantages by computing the static and pe.

Numerical modelling for improving recovery percent of reserves during huff and puff;

Based on percolation theory and material balance principle, draws out the relationship between oil recovery rate and recovery percent of reserves, approves its linear feature.

The effects of the interbeds with different lengths and different locations on bottom-water coning are studied, and then the laws of the relative length of the interbed influencing water breakthrough time and no-water recovery percent of reserves are obtained.

Field test of profile modification on produced sludge in Xingbei Oilfield;