期刊名称：IOP Conference Series: Earth and Environmental Science
印刷版ISSN：1755-1307
电子版ISSN：1755-1315
出版年度：2019
卷号：267
期号：6
页码：1-8
DOI：10.1088/1755-1315/267/6/062048
出版社：IOP Publishing
摘要：Low-permeability reservoirs generally have poor physical properties and refer to reservoirs with low porosity and the radius of small pore in the reservoirs is large. In the process of water flooding development, due to the serious damage of pore water blocking, it is difficult to inject water or even impossible to inject water, which seriously reduces the development efficiency of water flooding. The MD film augmented injection techniques is an effective way to solve this problem. The laboratory tests show that the rock samples have the best effect of reducing pressure after being treated by the MD film and the water flooding flow rate is 0.05~0.10 mL/min. At the same time, the water saturation of the core pores increases and the water blocking damage of the pores is relieved after the MD film treatment, which is favorable for water injection. The results of the nuclear magnetic field show that the T2 cutoff value of the rock samples treated by the MD membrane has decreased, and the porosity of flowable part core has increased. The molecular membrane agent could be apllied to the low permeability reservoir with the a pore throat radius greater than 0.01 ^m.
