赵翰卿
Zhao Hanqing ;

• 1:大庆石油管理局勘探开发研究院

摘要(Abstract)：

本文把河流-三角洲沉积砂体中的夹层划分为单元间和单元内两大类,以大庆油田喇嘛甸地区葡Ⅰ_2期河道砂岩沉积为例,论述了河道砂岩中单元间夹层的稳定性及其分布特征,对井间夹层稳定这一重要问题捉出一些经验性的分析和预测方法。系统论述了曲流河道砂体内部的废弃河道充填物及点坝侧积体间夹层的形态、规模、分布方式、稳定性及其对注水开发的影响。古代曲流河道砂体中必定存在一定数量的井网难以控制的废弃河道充填物,它们可能影响油田采收率,点坝侧积体间夹层至少有三种分布形式,在平行砂体延伸方向上,它们对注入水的影响较小,在垂直砂体延伸方向上则影响较大,不利于注入水的推进及油层水淹厚度的扩大,因此在河道砂体中布井最好使注入水沿着砂体仲长方向推进。
In the paper, intercalated beds within fluvial-deltaic sedimentary sand bodies are classified into two types, interunit and intraunit. Taking the PI2 channel sandstone in Lamadian area, Daqing oil Field, as an example, the continuity and distribution characteristics of the intercalated beds of the interunit type within channel sandstones are discussed, and some emperical methods for analysis and prediction of the continuity of intercalated beds between wells are presented. The author also systematically discussed in the paper, the geometry, size distribution pattern and continuity of the intercalated beds in abandoned channel fills within meandering channel sand bodies and the laterally-deposited point sand bars, as well as their effect on the waterflooding performance. There must be a certain number of abandoned channel fills in ancient meandering channel sand bodies, that are difficult to be controlled with the existing well patterns, and they may affect oil recovery of the oil f:eld.The intercalated beds of laterally-deposited point tars ba\e at least three types of distribution .In the direction parallel with the extension of the sand bodies, their effect on oil recovery is less, but in the direction perpendicular to the extension of the itr.d leches this effect is greater, and thus, unfavourable for the advancement of the injected water and increase of the water-swept thickness of reservoirs.Henee, in channel sand bodies, wells should be arranged in such a way, that the injected water could advance along the direction of sand body extension.

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作者(Authors): 赵翰卿
Zhao Hanqing ;

DOI: 10.19597/j.issn.1000-3754.1985.03.002

参考文献(References)：

• [1]Miall A.D.: Fluvial Sedimentology, Calgary, Alberta, Canada, 1978, 8, P703—721.
• [2]Le Blanc R.J.: Distribution and Continuity of Sandstone Reservoirs—Part 1, JPT, 1977, 7, P776—792.
• [3]布拉特H:等:《沉积岩成因》,北京科学出版社,1978年,第138页。
• [4]Zeito G.A.: Interbedding of Shale Breaks and Reservoir Heterogcneities, JPT, 1965, 10, P1223—1228.