江汉盆地新沟咀组排烃量初探

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

王凤琴 陈荷立 罗晓容

Wang Fengqin Chen Heli Luo Xiaorong

西安石油学院 2. 西北大学

Xian Petroleum College 2. Northwest University

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。

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.

https://doi.org/10.11781/sysydz198902160