Using data of interval transit time , this paper studied
the abnormal pore fluid pressure of K1d1 by the method of
equivalent depth , considered K1d1 to have 2 ～ 8 MPa
abnormal pore fluid pressure ,high value area in among wu 15
well , wu 17 well and haican 1 well , from it to side of
depression abnormal pore fluid pressure of K1d1 decreases
gradually. Owing to existence of abnormal pore fluid pressure
in K1d1 , it made capillary seal ability increase , formed
restraining concentration seal ability to gas in diffusion
phase ,made faults from vertical seal. This is the important
cause that oil and gas accumulated under K1d1 is more than
that under other strata.
论文详情