The Preliminary Analysis Of The Relationship Between Difference Of Pore Structure And Difference Of Oilness

In this paper, as Dongying and Zhanhua depression for a key research, we study the different oil-bearing rocks by the core and fluorescent thin sections; according to conventional porosity and permeability testing we measure the change of permeability of rock before and after fracture set, and the difference of the pore structure parameters of the rocks with different oil-bearing, based on the above comprehensive we analysis the relative relations of reservoir and cap rocks.we get the following main knowledge:1. If the pore structure of rocks is different, the oil resistance is different. In the rock containing cracks, usually the cracks contain oil and the other parts contain no oil; in the rocks with undeveloped cracks contain more oil with large pore diameter, porosity and permeability, and on the contrary, the oiliness is poor.2. Reservoir and cap rock is relative. When the pore structure is variety, the rocks with small pore diameter, porosity and permeability is the cap to the rocks with large pore diameter, porosity and permeability; The greater the difference between them, the better the sealing performance; when cracks is developed, porous rocks block the fractured rock.