鄂尔多斯盆地油房庄地区长8储层孔隙结构研究

通过对油房庄地区长8储层孔隙结构的研究,发现该区储层的孔隙中孔隙和小孔隙为主,粒间孔和长石溶孔作为重要的储集空间.吼道已缩颈型和片状喉道为主,其次是弯曲状河道和孔隙缩小型喉道.储层排驱压力、中值压力逐渐降低,中值半径、最大进汞饱和度、退汞效率、平均孔径逐渐增大,储层物性逐渐变好.

Research on Pore Structure of Chang 8 Reservoir in Youfangzhuang Aera, Ordos Basin

Through research on pore structure of Chang 8 reservoir in Youfangzhuang area, it’s found that porosity of the reservoiris mainly middle and small pore, intergranular pore and feldspar solution pore are important reservoir space. Roars are mainlynecking type and lamellar throat, in the next place, include bending shape river and pore narrow type larynx way. Reservoirdisplacement pressure and median pressure gradually reduce; median radius, maximum mercury saturation, mercury withdrawalefficiency, average pore diameter increase gradually; physical properties of reservoir gradually become good.