Application of data fusion to annulus logging explanation;

The secondary flow in Newtonian fluid flow in annulus with the inner cylinder executing a planetary motion;

Velocity distribution of the flow of power-law fluid in annulus with inner cylinder executing a planetary motion;

Analysis of start-up flow of visco-elastic fluid in annular space;

In order to analyze the effect of the heat insulation methods of charged or injected nitrogen gas in the annular of steam injection wells on steam injection,the flow and heat transfer mathematical models of the steam and nitrogen flowing along the wellbore were established on the basis of heat transfer principle and flow theory.

The slug flow model is set up for deviated wellbore,the flow pattern map is plotted and a new way for calculating the pressure drop of slug flow is put forward,The real gas-containing rate and the foam flowing velocity in annular are modified according to experiment,the equation of modified annular slug flow porosity is presented.

A Cognitive-Pragmatic Analysis of Missing Links in Discourse;

As the token of the latter, missing links are supposed to be expounded forcefully with the aid of Relevance Theory.

As a phenomenon of language use,“missing links”are closely related to cohesion and coherence.

the key of seperated layer polymer injection technology is the shape and size of the core, as a savings component, which can reach the scene called for pressure to reduce expenditure as much as possible so that the viscosity loss of the smallest, As to the problem mentioned above, a injection allocation with concentric annulus with ring slots on the inner cylinder was invented.

The under-balanced drilling technology was successfully applied in FP1-1 well by using an oil pipe in a vertical well to carry out annular air injection, so as to achieve rapid and steady injection and provide great protection of coal seams as well as stability of well wall.