储层流动单元划分方法评价及优选

doi:10.3969/j.issn.1673-8926.2015.01.011

岩性油气藏 ›› 2015, Vol. 27 ›› Issue (1): 74–80.doi: 10.3969/j.issn.1673-8926.2015.01.011

储层流动单元划分方法评价及优选

吕明针¹，林承焰¹，张宪国¹，张江涛²

1. 中国石油大学（华东）地球科学与技术学院，山东，青岛 266580 ；2. 中海石油（中国）有限公司天津分公司，天津 300452

出版日期:2015-02-03 发布日期:2015-02-03
第一作者:吕明针（ 1989- ），女，中国石油大学在读硕士研究生，研究方向为油气藏开发地质。地址：（ 266580 ）山东省青岛市经济技术开发区长江西路 66 号。 E-mail ： zhenzhen1102@126.com 。
基金资助:
国家自然科学基金项目“辫状河储层内部结构地震沉积学解释方法研究”（编号： 41202092 ）和国家博士后科学基金项目“塔南凹陷
高 GR 储层成因及识别方法研究”（编号： 2012M521366 ）联合资助

Evaluation and optimization of flow unit division methods

LU Mingzhen¹， LIN Chengyan¹， ZHANG Xianguo¹， ZHANG Jiangtao²

1. School of Geosciences ， China University of Petroleum ， Qingdao 266580 ， Shandong ， China ；2. Tianjin Company ， CNOOC ， Tianjin 300452 ， China

Online:2015-02-03 Published:2015-02-03

摘要/Abstract

摘要：

开展储层流动单元研究对于定量刻画储层非均质性、提高测井解释精度及认识剩余油分布具有重要意义，但其识别方法较多，且适用性存在差异。以珠江口盆地 W 油田为例，对比了 4 种不同的流动单元定量划分方法，并探索了其适用性。研究认为：修改的地层 Lorenz 图法和流动分层指标法均基于孔渗比值关系，难以识别致密层；孔喉几何形状法虽能识别致密层，但对质量较好的储层区分作用不明显，而对质量较差的储层划分又过细；非均质综合指数法同时考虑了控制储层平面非均质性的定性参数和表征流体渗流特征的定量参数，将致密层单独划分为一类流动单元，有效区别于其他油水层，划分结果避免了异常点或过渡类型的影响，能够全面、合理地反映储层非均质性。

关键词: 有效烃源岩, 排烃特征, TOC 含量下限值, 缓坡带, 查干凹陷

Abstract:

Research on flow units is significant for the studies of reservoir heterogeneity and remaining oil distribution, as well as improving accuracy of well log interpretation models. Methods of flow unit identification are various, and their applicability is also different. Taking W oilfield in the Pearl River Mouth Basin as an example, this paper respectively used four methods to identify flow units, including modified stratigraphic Lorenz plot, flow zone indicator, integrated index of reservoir heterogeneity and pore throat aperture. Both modified stratigraphic Lorenz plot method and flow zone indicator method are based on permeability and porosity ratio, so it is difficult to identify tight reservoir. Pore throat aperture method can be used to identify tight reservoir, but it is difficult to differentiate high quality reservoir and meticulous to divide low quality reservoirs. Integrated index of reservoir heterogeneity synthesizes various qualitative and quantitative parameters, it divides tight reservoir as a separate kind of flow unit which can be effectively distinguished from other oil layer, and the division result can reflect reservoir heterogeneity reasonably, so it is the best method for flow unit division in the study area.

Key words: effective source rocks, hydrocarbon expulsion characteristics, lowest limit of TOC content, gentle slope belt, Chagan Depression

吕明针，林承焰，张宪国，张江涛. 储层流动单元划分方法评价及优选[J]. 岩性油气藏, 2015, 27(1): 74–80.

LU Mingzhen,LIN Chengyan,ZHANG Xianguo,ZHANG Jiangtao . Evaluation and optimization of flow unit division methods[J]. LITHOLOGIC RESERVOIRS, 2015, 27(1): 74–80.

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储层流动单元划分方法评价及优选

Evaluation and optimization of flow unit division methods

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