Characterization of carrier formation for hydrocarbon migration:concepts and approaches

doi:10.7623/syxb201203012

Editorial office of ACTA PETROLEI SINICA ›› 2012, Vol. 33 ›› Issue (3): 428-436.DOI: 10.7623/syxb201203012

• Petroleum Exploration • Previous Articles Next Articles

Characterization of carrier formation for hydrocarbon migration:concepts and approaches

LUO Xiaorong　LEI Yuhong　ZHANG Likuan　CHEN Ruiyin　CHEN Zhankun　XU Jianhua　ZHAO Jian

Received:2011-12-13 Revised:2012-02-19 Online:2012-05-25 Published:2012-07-20

油气运移输导层研究及量化表征方法

罗晓容　雷裕红　张立宽　陈瑞银　陈占坤　许建华　赵　健

中国科学院油气资源研究重点实验室、中国科学院地质与地球物理研究所　北京　100029

通讯作者: 罗晓容
作者简介:罗晓容，男，1959年6月生，1982年毕业于西北大学地质系，现为中国科学院地质与地球物理研究所研究员，主要从事油气运聚成藏动力学与石油地质学研究。
基金资助:
国家重点基础研究发展规划（973）项目（2011CB201105）及国家重大科技专项（2011ZX08005-004）资助。

Abstract

Abstract:

The occurrence of secondary hydrocarbon migration in basins depends on the correlation between driving force under natural geological conditions and the resistance of carriers, which controls the formation process and special distribution of hydrocarbon accumulations. Previously quantitative studies on the driving force of hydrocarbon migration have been nearly perfect, whereas studies on migration paths remain still in qualitative level. Based on our recent-years attempts at quantitatively analyzing migration paths, we examined the study scale of hydrocarbon migration in actual basins and its maneuverability, used ideas and methods engaged in characterizing reservoirs in oilfield development as reference and proposed a concept on the carrier formation in order to achieve a quantitative characterization of hydrocarbon migration carriers. The carrier formation is defined as a stratum that has a certain thickness, is located beneath a regional seal and may include all the carriers that have microscopic pore space and permeability. These carrier formation are geometrically linked together from a macroscopic perspective and capable of a fluid dynamic connectivity with each other when hydrocarbon migration and accumulation occur. Based on actual situations of terrestrial basins in China, we summarized all the analytical methods for the connectivity of sandstone carriers and proposed a basic working procedure to set up models for sandstone carriers. Finally, we established a methodology to characterize them quantitatively with conventional property parameters, which should include the following 5 steps: ①to determine the thickness and domains of carrier intervals; ②to delineate sand-body properties in carrier formations; ③to analyze the geometric connectivity among sand bodies in carrier formations; ④to examine the hydraulic connectivity among sand bodies in carrier formations; ⑤to quantitatively characterize the transporting capability of carrier formations. The permeability seems to be the best parameter in the quantitative characterization of carrier formations from a perspective of setting up a carrier framework composed of various carriers.

Key words: hydrocarbon migration, path, carrier formation, connectivity, quantized characterization

摘要：

油气二次运移的发生取决于实际地质条件下运移动力和通道阻力间的相互关系，制约着油气藏的形成过程及空间分布。前人在运移动力方面的定量研究已趋完善，但对于运移通道的研究仍长期停留在定性阶段。基于近年来量化分析通道地质体的尝试，考虑到实际盆地中油气运移研究的尺度及可操作性，借鉴油田开发中储层描述的思想和方法，提出输导层的概念，以实现对油气运移通道的量化表征。输导层定义为：区域盖层之下具有一定厚度的地层单元，为微观上具有孔隙空间和渗透能力的输导体的总和，这些输导体在宏观上几何连接、油气运移发生时相互之间具有流体动力学连通性。根据中国陆相盆地实际情况，总结出砂岩输导体连通性分析方法，提出了建立砂岩输导层模型的基本工作程序，形成可以利用通常的物性参数进行输导层量化表征的方法，包括5个步骤：① 输导层段确定；② 输导层砂地比图的勾绘；③ 输导体的几何连通性分析；④ 输导层的流体动力学连通性分析；⑤ 输导层输导性能的量化表征。从建立由不同类型输导体所构成的输导格架的角度，渗透率应是最为理想的参数。

关键词: 油气运移, 通道, 输导层, 连通性, 量化表征

LUO Xiaorong　LEI Yuhong　ZHANG Likuan　CHEN Ruiyin　CHEN Zhankun　XU Jianhua. Characterization of carrier formation for hydrocarbon migration:concepts and approaches[J]. Editorial office of ACTA PETROLEI SINICA, 2012, 33(3): 428-436.

罗晓容　雷裕红　张立宽　陈瑞银　陈占坤　许建华　赵　健. 油气运移输导层研究及量化表征方法[J]. 石油学报, 2012, 33(3): 428-436.

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Characterization of carrier formation for hydrocarbon migration:concepts and approaches

油气运移输导层研究及量化表征方法

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