Dip of the Oil(Gas)-Water Interfaces in Anticline-Hydrodynamic Oil(Gas) Pools
-
摘要: 基于Hubbert的油(气)等势面坡度与水头关系的公式和达西定律, 推出了油(气)等势面坡度与水流的渗滤速度的关系式.根据此关系式, 讨论了各种情形水流速度与油气等势面坡度的关系.以此为基础, 认为未被油气充满转折端的背斜-水动力油气藏平面的油水界面由于水流速度大小和方向变化通常应该为曲面; 对被油气充满转折端的背斜-水动力油气藏倾斜的油水界面在不同方向剖面上倾斜不同: 圆柱状背斜横剖面油水界线水平、斜向剖面界线倾向相反, 倾伏背斜的横剖面可能同向倾斜但通常不在同一条倾斜的直线上.Abstract: On the basis of the Dacy Law and the formulae proposed by
Hubbert(1953) for the relationship between dips of oil-water and gas-water contacts in the oil and gas pools under hydrodynamic conditions and hydrodynamic heads, this paper proposes formulae of the relationship between dips of contacts and the waterflow seepage velocity. With the formulae, the paper discusses the possible relationship between the water seepage flow velocity and the slopes of oil(gas)equipotential surfaces. Based on the discussion, the paper concludes that the oil-water contacts in the hydrodynamic-anticline pools where hinge zones are not full of oil commonly are curve surfaces. For hydrodynamic-anticline pools where hinge zones of anticlines are full of oil, their oil-water contact lines in two limbs along cross sections of the cylinder anticlines are horizontal. Those along oblique sections of the cylinder anticlines are reverse; those along cross sections of the plunge anticlines might have the same dips but the two lines usually are not located in the same tilt straight line. -
图 1 油水界面产状的两种常见认识
a.转折端没有被油充满, 水可以从转折端流过(Levorsen, 1954); b.油充满转折端, 水不能在该横剖面上从转折端流过(李明诚, 1994; 张金亮和常象春, 2004)
Fig. 1. Two common misconceptions of the occurrences of oil-water interfaces
图 2 油等势面(平均)倾角与等厚储层倾角关系示意图
虚线代表油等势面; 箭头线代表水流线
Fig. 2. Schematic sections showing relations of slopes of oil equipotential surfaces to dips of the reservoir layers
图 3 未被油充满转折端的背斜-水动力油藏横剖面上油水等势线分布和油水界线产状
a.没有油气聚集体条件下油等势线(虚线)分布和油气运移方向; b.油聚集体稳定成为背斜-水动力油藏后油水界线产状: 油水界线虽然是油等势线, 但由于油气聚集后, 水流方向和水流速度大小发生局部变化, 导致油等势线发生局部改变, 油水界面是在新的油势(点线)分布中一个等势线
Fig. 3. Oil equipotential lines and the occurrence of oil-water contact in the hydrodynamic-anticline oil pool where the hinge zone is not full of oil
-
Chen, R.S., 1994. Geology of oil and gas. China University of Geosciences Press, Wuhan(in Chinese). Chen, R.S., Yuan B.C., 1986. Geology of natural gas. Wuhan College of Geosciences Press, Wuhan(in Chinese). Chen, Z.N., 2005. Geology of oil and gas. Geological Publishing House, Beijing(in Chinese). Hubbert, M.K., 1953. Entrapment of petroleum under hydrodynamic conditions. AAPG Bulletin, 37: 1954-2026. Levorsen, A.I., 1954. Geology of petroleum. W.H. Freeman and Company, San Francisco and London, 724. Li, M.C., 1994. Migration of oil and gas(the 2nd edition). Petroleum Industry Press, Beijing(in Chinese). Li, T. M., 1989. Outline of quatitative study of geological processes of petroleum. Petroleum University Press, Dongying(in Chinese). Pan, Z.X., 1986. Geology of petroleum. Geological Publishing House, Beijing(in Chinese). Sun, X.Z., Guan M.Y., 1973. Geology of petroleum. China Petroleum Association and Taiwan General Petroleum Exploring Department(Ser. 11), Taibei(in Chinese). Zhang, J.L., Chang, X.C., 2004. Geology of petroleum. Petroleum Industry Press, Beijing(in Chinese). 陈荣书, 1994. 石油与天然气地质学. 武汉: 中国地质大学出版社. 陈荣书, 袁炳存, 1986. 天然气地质学. 武汉: 武汉地质学院出版社. 陈昭年, 2005. 石油与天然气地质学. 北京: 地质出版社. 李明诚, 1994. 石油与天然气运移(第二版). 北京: 石油工业出版社. 李泰明, 1989. 石油地质过程定量研究概论. 东营: 石油大学出版社. 潘钟祥, 1986. 石油地质学. 北京: 地质出版社. 孙习之, 关明义, 1973. 石油地质学. 台北: 中国石油学会和台湾石油勘探总处(探采丛书之十一). 张金亮, 常象春, 2004. 石油地质学. 北京: 石油工业出版社. -
下载:
点击查看大图
计量
- 文章访问数: 3996
- HTML全文浏览量: 892
- PDF下载量: 9
- 被引次数: 0
