致密砂岩支撑裂缝气测导流能力研究

何思源; 赵立强; 罗志锋; 李骏; 李化

doi:10.13809/j.cnki.cn32-1825/te.2018.06.009

• 石油工程 • | 浏览量 : 0 下载量: 35 CSCD: 0 CNKI被引量: 10 Scopus: 0 更多指标

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致密砂岩支撑裂缝气测导流能力研究
Study on indoor gas measurement of supporting fracture conductivity of tight sandstone
2018年8卷第6期页码：45-50
纸质出版：2018
DOI： 10.13809/j.cnki.cn32-1825/te.2018.06.009
稿件说明：

移动端阅览

何思源, 赵立强, 罗志锋, 等. 致密砂岩支撑裂缝气测导流能力研究[J]. 油气藏评价与开发, 2018,8(6):45-50. DOI： 10.13809/j.cnki.cn32-1825/te.2018.06.009.

He Siyuan, Zhao Liqiang, Luo Zhifeng, et al. Study on indoor gas measurement of supporting fracture conductivity of tight sandstone[J]. Petroleum Reservoir Evaluation and Development, 2018, 8(6): 45-50. DOI： 10.13809/j.cnki.cn32-1825/te.2018.06.009.

摘要

用气测导流能力结果指导致密气藏的压裂设计优化

压后效果预测

支撑剂优选评价等更具有针对性和合理性。目前常见的气测导流能力测试主要研究了闭合压力、支撑剂粒径、支撑剂类型对于导流能力的影响。基于分析研究压裂液类型与铺置方式对导流能力影响的实验方案

采用DL—2000支撑裂缝导流能力试验仪

根据SY/T6302—1997《压裂支撑剂填充层短期导流能力评价推荐方法》进行气测导流能力测试。结果显示

随着闭合压力的增加

裂缝导流能力的下降;支撑剂粒径越大导流能力越大

但随着闭合压力的增加

导流能力降幅越大;铺置方式为尾追时裂缝气测导流能力最好;压裂液伤害使裂缝气测导流能力下降了80 %~95 %。

Abstract

After the guidance of the results of gas flow conductivity test for the optimization of fracturing design of tight gas reservoirs

the prediction of post fracturing effect and the optimization evaluation of proppant were more pertinent and reasonable. The current common gas flow conductivity tests mainly focused on the influence of the closure pressure

proppant particle size and proppant type on the flow conductivity. Based on the analysis

we designed the experimental scheme about the influence of fracturing fluid type and laying mode on gas flow conductivity by using the DL—2000 fracture support conductivity tester and according to the SY/T6302—1997 "proppant filling layer short-term conductivity evaluation and recommendation method". The results showed that the fracture conductivity decreases when the closure pressure increased; the larger the proppant diameter was

the greater the conductivity would be; while the greater the closure pressure was

the greater the decreasing amplitude of the flow conductivity would be. The laying mode for the rear gas logging fracture conductivity was the best. The fracturing fluid damage made the cracks in the gas logging diversion capacity decreased by 80 %~95 %.