江汉盆地新沟咀组排烃量初探

本文以迪基和真柄钦次提出的油气初次运移模式为根据,以江汉盆地的泥岩压实为基础,利用油水相对渗透率、油水饱和度和达西定律的关系,提出了计算排烃量的公式:Q=w·q·d.在选取参数时,直接用本区泥岩压实曲线计算了孔隙流体损失量,并借用研究区砂岩油水饱和度与油水相对渗透率关系曲线,求出相邻泥岩的不同油水饱和度下油水各自的相对渗透率比值。 

PRELIMINARY STUDY ON HYDROCARBON EXPULSION QUANTITY IN XIN GOUZUI FORMATION OF JIANGHAN BASIN

In the light of the model of oil-gas primary migration proposed by Di-ckie and Zhen Bing Qinru,on the basis of the study on claystone compa-ction in Jianghan Basin,the authors have suggested a formula for the cal-culation of hydrocarbon expulsion quantity.Q=w.q.d,using relative permeability of oil-gas,and the relation of oil-gas saturation to Darcy law.In selecting parameters,compaction curve of claystone in the region was ado-pted directly to calculate the quantity of interstitial fluid loss,meanwhile,with rating curve for oil-gas saturation versus relative permeability of oil-gas in the studied area,the ratios of relative permeabilities of oil-gas for the claystone under different saturations were calculated.