Evaluation on adaptability of superhigh molecular polymer flooding of ordinary heavy oil;

The water drive recovery efficiency of the ordinary heavy oil reservoirs with crude viscosity of more than 100mPa·s is generally lower than 18% in Shengli petroliferous province.

Starting pressure gradient calculation and its application in conventional heavy oil reservoir;

The interfacial tensions of oil-water system,which consisted of the conventional heavy oil from Zhuang106-15-X18 and simulated brine solution containing a prepared sulfate anionic surfactant with alkoxy chain,were measured.

Laboratory studies on improving the production of common heavy oil in Qian 22 faulted block with A/S.;

Camellia oleifera descent types, reproductive organ shape construction and its process have been studied.

Interspecific hybridization was tried with Camellia oleifera, C.

This paper makes a contrastive study on the biological characteristics and the accumulation of nutritious substances in seeds at the ripe stage between the hybridized cole Qiny-ou 2 and the ordinary cole Zhongyou 821 (as a contrast) .