油气地质与采收率2018，Vol.25Issue(3)：89-94,111,7.DOI:10.13673/j.cnki.cn37-1359/te.2018.03.013
基于压力脉冲法的储层基质压裂液伤害评价
Experimental study on reservoir matrix damage caused by fracturing fluids based on transient pressure pulse method
摘要
Abstract
The tight sandstone matrix is characterized by development of micro-nano pore throats and strong capillary forces.Fracturing fluids can interact with reservoir rocks and cause formation damage resulting in decrease of productivity in oil reservoir.However,considerable previous studies are focused on the damage of the fracturing fluids on the fractures of formations without taking the effect of matrix damage on productivity into consideration.The damage rule of the fracturing fluid on Keshen tight sandstone and the shale matrix of Xujiahe Formation and Lujiaping Formation was studied systematically using a transient pressure pulse instrument that was developed according to the matrix permeability model based on the principle of transient pressure pulse method.Compared with the conventional damage evaluation method measuring the outlet flow of core,the transient pressure pulse method only records the variation of downstream pressure with time during the fluid flowing through the cores,which can evaluate core permeability and damage degree and overcome the problems of large experiment error and long flow monitoring caused by extreme low permeability of the low-permeability cores.关键词
压力脉冲法/致密砂岩/页岩/储层基质/压裂液伤害Key words
transient pressure pulse method/tight sandstone/shale/formation matrix/fracturing fluids damage分类
能源科技引用本文复制引用
张路锋,周福建,张士诚,王晋,李明辉,刘健伏..基于压力脉冲法的储层基质压裂液伤害评价[J].油气地质与采收率,2018,25(3):89-94,111,7.基金项目
国家科技重大专项“碳酸盐岩储层难动用储量高效改造关键技术研究”(2016ZX05030005-002). （2016ZX05030005-002）
