According to quantitative calculation of positive stress on fault plane and shale percentage contents,the fault vertical sealing factor(Fvs) is defined as the product of normal stress on fault plane and shale percentage contents of fault filling material.

A method for analysing vertical sealing of fault by acoustilog data;

Research on formation period for vertical seal of fractures companied and derived by Surennuoer fault;

Analysis on variety of vertical seal of a same fault;

Time-space distribution of vertical seal in Shurennouer Fault and its relation with oilgas accumulation;

Favourable depth at which the vertical sealing of fault is fomed and its determining method;

Fracture vertical sealing and hydrocarbon accumulation in Budate Group of Beier Depression;

Quantitative evaluation for vertical sealing ability of faults in overpressure mudstone cap rock

According to sealing mechanism of strata joining and mudstone smearing, fault sealing ability has been quantitatively projected through computer method.

These two factors lead to fault sealing.