白云岩油藏低渗透条带对剩余油分布的影响

doi:10.11885/j.issn.16745086.2016.06.12.01

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (5): 143-154.DOI: 10.11885/j.issn.16745086.2016.06.12.01

白云岩油藏低渗透条带对剩余油分布的影响

曹鹏^1,2, 戴传瑞^1,2, 马慧³, 闫晓芳^1,2, 常少英^1,2

1. 中国石油杭州地质研究院, 浙江杭州 310023;
2. 中国石油天然气集团公司碳酸盐岩储层重点实验室, 浙江杭州 310023;
3. 中国石油塔里木油田公司勘探开发研究院, 新疆库尔勒 841000

收稿日期:2016-06-12 出版日期:2017-10-01 发布日期:2017-10-01
作者简介:曹鹏,1985年生,男,汉族,山东宁津人,工程师,硕士,主要从事油藏工程及数值模拟方面的研究工作。E-mail:caop_hz@petrochina.com.cn;戴传瑞,1983年生,男,汉族,高级工程师,博士,主要从事碳酸盐岩石油综合地质方面的研究工作。E-mail:daicr_hz@petrochina.com.cn;马慧,1987年生,女,回族,新疆伊犁人,硕士,主要从事油气田开发方面的研究工作。E-mail:mahui1-tlm@petrochina.com.cn;闫晓芳,1980年生,女,汉族,山西山阴人,工程师,硕士,主要从事油藏描述及建模方面的研究工作。E-mail:yanxf_hz@petrochina.com.cn;常少英,1983年生,男,汉族,河南唐河人,硕士,主要从事油藏地球物理方面的研究工作。E-mail:changsy_hz@petrochina.com.cn
基金资助:
国家科技重大专项（2016ZX05004-002）；中国石油天然气股份有限公司重大科技专项（2014E-32-02）

Influence of Low-permeability Layers on Remaining Oil Distribution in Dolomite Reservoir

CAO Peng^1,2, DAI Chuanrui^1,2, MA Hui³, YAN Xiaofang^1,2, CHANG Shaoying^1,2

1. Hangzhou Research Institute of Geology, PetroChina, Hangzhou, Zhejiang 310023, China;
2. Key Laboratory of Carbonate Reservoir, CNPC, Hangzhou, Zhejiang 310023, China;
3. Exploration and Development Company Research Institute, Tarim Oilfield, PetroChina, Korla, Xinjiang 841000, China

Received:2016-06-12 Online:2017-10-01 Published:2017-10-01
Contact: 曹鹏,E-mail:caop_hz@petrochina.com.cn

摘要/Abstract

摘要： YM白云岩油藏已进入高含水开采期，如何寻找剩余油并进行挖潜是目前面临的重要问题。该类型储层中普遍存在低渗透条带，建立机理模型，通过对低渗透条带的渗透率、厚度、产状及与储层渗透率的组合关系进行敏感性分析，研究结果表明，渗流阻挡作用的强弱主要与其渗透率大小有关，当渗透率小于0.01 mD时，能够起到较好的渗流阻挡作用；同等条件下，厚度越大，渗流阻挡作用越强；根据分布形态与样式不同，对剩余油的控制程度I类> Ⅱ类> Ⅲ类> IV类；若有两条交错的低渗透条带，则对剩余油的控制程度V类> VI类。低渗透条带在一定生产时间内可以形成渗流屏障，成为控制剩余油分布的重要因素。

关键词: 低渗透条带, 碳酸盐岩油藏, 渗流阻挡, 数值模拟, 剩余油分布

Abstract: The high water-production stage has started in the YM dolomite reservoir; however, the important issue is how to locate and potentially tap the remaining oil. Low-permeability layers are ubiquitous in this type of reservoir. A mechanism model was built for sensitivity analysis of permeability, thickness, attitude of the low-permeability layers, and reservoir permeability. The results show that the effect of a flow barrier depends mainly on the permeability of the layers. When permeability is lower than 0.01 mD, the flow barrier functions well. It was found that, all conditions being equal, the thicker the low-permeability layers the stronger would be the flow barrier function. According to the distribution form and style, the controlling degrees of the remaining oil are types I > II > III > IV. If two interlaced low-permeability layers were present, the controlling degrees would be types V > VI. The low-permeability layers are able to form fluid barriers over a short production time, which become the main controlling factors on the distribution of the remaining oil.

Key words: low-permeability layer, carbonate reservoir, flow barrier, numerical simulation, remaining oil distribution

中图分类号:

TE122

曹鹏, 戴传瑞, 马慧, 闫晓芳, 常少英. 白云岩油藏低渗透条带对剩余油分布的影响[J]. 西南石油大学学报(自然科学版), 2017, 39(5): 143-154.

CAO Peng, DAI Chuanrui, MA Hui, YAN Xiaofang, CHANG Shaoying. Influence of Low-permeability Layers on Remaining Oil Distribution in Dolomite Reservoir[J]. 西南石油大学学报(自然科学版), 2017, 39(5): 143-154.

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白云岩油藏低渗透条带对剩余油分布的影响

Influence of Low-permeability Layers on Remaining Oil Distribution in Dolomite Reservoir

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