The average recovery ratio were 99.55%,99.05%,98.53%,and RSD(n=5) were 1.56%,1.79% and 1.43% for samples of ephedrine hydrochloride,pseudoephedrine hydrochloride and hyoscine hydrobromide respectively.
The technology was used in 11 wells from 2004 to 2005 with technical success rate of 91%, efficiency of 81.8%, cumulative oil increment of 3058t and input output ratio of 1:9. The diverting fracturing technology is promising way to improve recovery ratio of extra-low permeability reservoir in Pingbei Oilfield.
70×10~4m~3/d and 60×10~4m~3/d two production scale final recover index are almost equal . which recovery ratio can reach 88% above, except for stable production period and stable production period development index.
The deformed shape recovery ratio of aging promotes much more 22%～40% than the undeformed aging,and also the greatest recovery stress promotes to around 35%～143% when heating,and recovery stress of room temperature promotes to around 10%～38%.
From the study of shape memory effect, when solution temperature is 700 ℃ and bending deformation amount is 2.9% the shape recovery ratio is best (74.2%) and is improved by 9% than Fe-20Mn-5Si-8Cr-5Ni alloy without N in the same condition;
The shape recovery ratio η of the alloy with 10% deformation increases 45%～135% than that of the alloy without deformation and increases 5%～24% than that of the alloy quenched at the optimum quenching temperature.