Experimental evaluation of velocity sensitivity for conglomerate reservoir rock in Karamay oil field

IF 1.9 4区材料科学 Q3 Materials Science

Science and Engineering of Composite Materials Pub Date : 2023-01-01 DOI:10.1515/secm-2022-0204

Haishui Han, Qun Zhang, W. Lv, Lu Han, Z. Ji, Shanyan Zhang, Changhong Zhao, Hao Kang, Linghui Sun, Rui Shen

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Abstract

Abstract Velocity sensitivity refers to the possibility and degree of reservoir permeability decline caused by the migration of various particles in the reservoir rock due to the increase in fluid flow velocity and the blockage of pore channels. To improve the development results of M reservoir in Karamay Oil field, two reservoir cores were selected to carry out velocity sensitivity experiments. The permeability of No. 1 core decreases obviously when the flow rate is greater than 0.04 mL/min. Therefore, it can be considered that the injection rate of velocity sensitivity is between 0.04 and 0.06 mL/min, and the displacement rate should be less than 0.04 mL/min in the core displacement experiment. When the flow rate is greater than 0.5 mL/min, the permeability of No. 2 core decreases significantly. This is mainly due to the high permeability and critical velocity of No. 2 core. The study can provide a basis for the selection of displacement velocity in core displacement experiments, and also provide a reference for the determination of reasonable injection-production velocity in actual production.

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克拉玛依油田砾岩储层岩石速度敏感性试验评价

摘要速度敏感性是指由于流体流速的增加和孔隙通道的堵塞，储层岩石中各种颗粒的迁移导致储层渗透率下降的可能性和程度。为提高克拉玛依油田M油藏的开发效果，选取两个油藏岩心进行了速度敏感性实验。当流量大于0.04时，1号岩心渗透率明显下降毫升/分钟。因此，可以认为速度灵敏度的注入速率在0.04和0.06之间 mL/min，置换率应小于0.04 在岩心置换实验中为mL/min。当流量大于0.5时 mL/min时，2号岩心渗透率显著下降。这主要是由于2号岩心的渗透率和临界速度较高。该研究可为岩心驱替实验中驱替速度的选择提供依据，也可为实际生产中确定合理的注采速度提供参考。

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来源期刊

Science and Engineering of Composite Materials 工程技术-材料科学：复合

CiteScore

3.10

自引率

5.30%

发文量

审稿时长

4 months

期刊介绍： Science and Engineering of Composite Materials is a quarterly publication which provides a forum for discussion of all aspects related to the structure and performance under simulated and actual service conditions of composites. The publication covers a variety of subjects, such as macro and micro and nano structure of materials, their mechanics and nanomechanics, the interphase, physical and chemical aging, fatigue, environmental interactions, and process modeling. The interdisciplinary character of the subject as well as the possible development and use of composites for novel and specific applications receives special attention.