The recovery coefficient, remaining oil saturation, sweep efficiency and displacement efficiency were calculated and correlated layer by layer.

This method induces an unstable pulse pressure state in the oil reservoir, thus the oil reservoir pressure undergoes the courses of ascending and descending, which can further promotes the capillary imbibition drive action and increase injected steam sweep efficiency to result in descending water cut and enhancing oil recovery.

NMR imaging show that the sweep efficiency is lower when the permeability ratio is higher.

Study on ripple effect and perturbation effect of indirect economy effect;

The core concern of input-output analysis is ripple effect.

The result shows that the industries in the strap region and the southern side have comparatively high influential effects, forming a great promotion to the local economy; while the influential effects of indu.

Based on constructing software architecture model by Petri net(PSA),can calculate the relative quantity of component effect via the reachable marked graph of Petri net and spend less time,and every ripple-effect of SA evolution caused by component deletion,addition,modification,division and combination is described respectively in this thesis.

Depending on matrix shift and calculation,ripple-effect of ontology evolution can be analyzed and its quantity can be ascertained.

Then the research constructs the theoretical model of its spread effect on social development of international sports competition events,basing on the theory of sociology;and makes a comprehensive analysis on it.

When an economic system is completely closed, spread effect will diffuse locally; while it sopen, part of the effect will be expanded to other places through imported intermediate products.