低渗孔隙型碳酸盐岩油藏储层特征及剩余油分布规律

doi:10.13278/j.cnki.jjuese.20200094

摘要/Abstract

摘要： 为揭示低渗孔隙型碳酸盐岩油藏储层微观孔隙结构特征和水驱剩余油分布特征，以中东某孔隙型碳酸盐岩油藏为例，基于油藏物性测试、恒速压汞孔喉参数统计、CT扫描孔隙参数分析和水驱油流体微观分布特征等，得出孔隙型碳酸盐岩储层的微观孔隙、喉道发育特征及其影响下的剩余油分布规律；在此基础上，将孔隙型碳酸盐岩与砂岩储层研究结果进行对比，进一步明确了两类储层孔隙结构及剩余油分布特征差异。结果表明：与低渗砂岩储层相比，低渗碳酸盐岩储层呈现出"孔隙大而数量少""喉道数量多且类型全"的特征，并建立孔喉发育特征模型；由于孔隙型微观孔隙结构的影响，低渗碳酸盐岩储层大孔隙中的剩余油仍然是需要研究的对象，同时明确了剩余油挖潜开发方式建议。

关键词: 中东, 孔隙型, 碳酸盐岩, 储层, 剩余油

Abstract: In order to reveal the characteristics of micro pore structure and distribution of remaining oil in water drive low permeability carbonate reservoir, by taking a certain porous carbonate reservoir in the Middle East as an example, based on the reservoir physical property test, constant velocity mercury injection pore throat parameter statistics, CT scanning pore parameter analysis, and the micro distribution of water drive fluid, etc., the development of the micro pore and throat in porous carbonate reservoirs was studied. On this basis, the research results of the porous carbonate and sandstone reservoirs were compared, and the differences of the pore structure and remaining oil distribution between these two types of reservoirs were further clarified. The results show that compared with the low permeability sandstone reservoir, the low permeability carbonate reservoir presents the characteristics of "large pores but small quantities" and "large number and all types of throats". The characteristic model of pore throat development of porous carbonate reservoirs is established. In view of the particularity of the micro pore structures, the remaining oil in the large pores of the low permeability carbonate reservoir is worthy of further study, as well as the way to tap the remaining oil potential.

Key words: Middle East, pore type, carbonate rock, reservoir, remaining oil

中图分类号:

P618.13

张亚蒲, 杨正明, 黄延章, 李海波, 侯海涛, 朱光亚. 低渗孔隙型碳酸盐岩油藏储层特征及剩余油分布规律[J]. 吉林大学学报(地球科学版), 2021, 51(3): 659-668.

Zhang Yapu, Yang Zhengming, Huang Yanzhang, Li Haibo, Hou Haitao, Zhu Guangya. Study on Reservoir Characteristics and Remaining Oil Distribution of Low Permeability Pore Type Carbonate Rock[J]. Journal of Jilin University(Earth Science Edition), 2021, 51(3): 659-668.

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