Four sets of pyrolith reservoir assemblages have been identified in Beipu area

western Nanpu sag

Huanghua depression.The main pyrolith types include flood basalt and eruptive pyroclastic rocks

and the reservoir spaces are composed of fissures and intergranular pores. Drilling and logging results indicate that there are abundant fissures and pores in tuff on top and bottom of thick basalt in the 2nd and 3rd members of Shahejie Fm.

respectively

which will have relatively good exploration potential. Additionally

the sandstones above and below the pyrolith

being affected by magmatic activity

the poroperm characteristics would have been improved.It is

therefore

suggested that the explorer should pay much attention to the sandstones.