horizontal extent
1.A rock mass of large horizontal extent bounded, especially above, by physically different material.
2.Travel times of pp and PS phases reflected at the same part of the Moho were used to determine the structures of lower crust, the dip of Moho discontinuity is -0.83°—0.84° and its depth is about 68—69 Km. The range of fluctuation of Moho is 120Km and the extent is about≥1Km. The result indicates that fluctuation of Moho is slightly changed and the crust is fundamentally horizontal.
3.It is suggested that because the volcanic reservoir has very high heterogeneity, waterflooding process should not be adopted rashly in the early production period until obtaining experiences from clustered-well lest: infill drilling and adjustment during the period of early production may enhance producing extent, prolong water-free oil production period and improve performance response: a number of horizontal wells drilled during the mid-period of production may further increase the single well productivity and keep relatively long-term production stable and high.
