Abnormal negative separations of micro - electrode log curves are very common in the low permeability reservoir.

Abnormal negative separations of micro-electrode log curves are very vommon in the low permeability reservoir.

Based on the experiments, the dual laterolog method induces the response features of high and low fractures on dual laterolog to find connections among opening width, extending length of fracture and positive/negative separation of dual laterolog.

The shallow consists of four genetic sub types associated with swell differential loading (SDL),with basement faulting (BF),with gravitational spreading differential loading (GSDL) and with thin skinned faulting (TSF).

No matter whether factors flow or not, taxation burden difference influence the development of area economy through its effect on some factors.

This paper introduces the concept of tax burden of value-added tax, analyzes some factors that reduce the tax burden ratio, discusses some reasons that cause the taxation burden difference, and expounds how to enrich and perfect the evaluation of value-added tax under current conditions.

Difference of overlying weight was the power source of forming salt structure,and rapid settlement of the cap layer was the main reason for slow salt tectonic growth.