分汊与游荡型辫状河隔夹层层次结构特征

doi:10.11885/j.issn.1674-5086.2016.07.12.02

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (6): 69-77.DOI: 10.11885/j.issn.1674-5086.2016.07.12.02

分汊与游荡型辫状河隔夹层层次结构特征

王敏, 赵国良, 孙天建, 黄彤飞

中国石油勘探开发研究院, 北京海淀 100083

收稿日期:2016-07-12 出版日期:2017-12-01 发布日期:2017-12-01
通讯作者: 王敏,E-mail:wangmin1604@petrochina.com.cn
作者简介:王敏,1981年生,女,汉族,河北保定人,工程师,博士研究生,主要从事油气田开发地质方面的研究工作。E-mail:wangmin1604@petrochina.com.cn;赵国良,1972年生,男,汉族,黑龙江穆棱人,高级工程师,博士,主要从事油气田开发方面的研究工作。E-mail:zhguli@petrochina.com.cn;孙天建,1978年生,男,汉族,河南南阳人,工程师,博士,主要从事油气田开发地质方面的研究工作。E-mail:suntj555@163.com;黄彤飞,1990年生,男,汉族,山东泰安人,硕士研究生,主要从事石油地质方面的研究工作。E-mail:huangtfei@petrochina.com.cn

Hierarchy Characterization of Intercalations in Branching-based and Wandering-based Braided River Reservoirs

WANG Min, ZHAO Guoliang, SUN Tianjian, HUANG Tongfei

PetroChina Research Institute of Petroleum Exploration & Development, Haidian, Beijing 100083, China

Received:2016-07-12 Online:2017-12-01 Published:2017-12-01

摘要/Abstract

摘要： 前人对辫状河储层的研究往往笼统地将其作为一种储层类型，对不同类型辫状河储层研究较少。在文献调研和露头观察的基础上，以苏丹FN油田为例，按“层次约束”思路，参考Miall等关于河流相的构型界面分级体系，对分汊与游荡型两种辫状河储层内发育的隔夹层层次结构及特征进行了分析。研究发现，分汊型辫状河隔夹层主要包括泛滥平原沉积、泥质充填或半充填河道、落淤层及沟道细粒沉积。而游荡型辫状河隔夹层仅包括泛滥平原沉积和少量泥质半充填河道。不同层次、不同规模的隔夹层在岩石类型、发育程度、厚度及展布特征等方面均存在较大差异，对底水油藏水进方式及剩余油分布的控制各不相同。最后总结了隔夹层在垂向上影响剩余油分布的5种模式及其相对应的剩余油富集区。

关键词: 苏丹, 辫状河, 分汊型, 游荡型, 隔夹层, 层次, 剩余油

Abstract: Currently, research focus is on one general braided river model, disregarding other types of braided river models. Based on the literature survey and outcrop observations, the FN Oilfield, Sudan, was taken as an example. We analyzed the characteristics of the intercalation-hierarchy structures of the two types of braided river systems, namely, branching and meandering rivers, taking into account the hierarchical-constraint idea and the interface configuration of fluvial hierarchy proposed by Miall and others. The results show that the intercalation of branching braided-river systems includes flood plain deposits, mud filled or semi-filled channels, sedimentation layers, and fine sediment channels. The intercalation of wandering braidedriver systems only includes flood plain deposits and small amounts of mud semi-filled channels. Intercalations in different hierarchies and at various scales vary with respect to lithofacies type, development degree, thickness and horizontal character. This differs from each other in bottom-water reservoir method and the distribution of the remaining oil. In conclusion, we present a summary of five intercalation models that affect the distribution of the remaining oil in vertical configuration and the corresponding remaining oil-rich areas.

Key words: Sudan, braided river, branching-based, wandering-based, intercalation, hierarchy, remaining oil

中图分类号:

TE122

王敏, 赵国良, 孙天建, 黄彤飞. 分汊与游荡型辫状河隔夹层层次结构特征[J]. 西南石油大学学报(自然科学版), 2017, 39(6): 69-77.

WANG Min, ZHAO Guoliang, SUN Tianjian, HUANG Tongfei. Hierarchy Characterization of Intercalations in Branching-based and Wandering-based Braided River Reservoirs[J]. 西南石油大学学报(自然科学版), 2017, 39(6): 69-77.

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分汊与游荡型辫状河隔夹层层次结构特征

Hierarchy Characterization of Intercalations in Branching-based and Wandering-based Braided River Reservoirs

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