During gel treatments for fractures, the leak-off behavior of gelant has a great effect on the water shut-off performance of gel. Experiments were carried out using a polymer/chromium(Cr³⁺) gel system to explore the leak-off behavior and the water shut-off performance of gel in fractured media. Results of the gelant leak-off study show that the gelant leak-off from fracture into matrix contributes to the formation of the gelant leak-off layer during the gelant injection. Moreover, bec... 

【文章頁(yè)數(shù)】：12 頁(yè)

【文章目錄】：
1 Introduction
2 Materials and methods
    2.1 Materials
    2.2 Fractured core preparation
    2.3 Chromium measurement
    2.4 Gelant leak-off analysis
    2.5 Water shut-off performance test
3 Results and discussion
    3.1 Leak-off behavior of gelant in fractured media
        3.1.1 Leak-off mechanism of gelant in fractured media
        3.1.2 Effect of polymer on gelant leak-off
        3.1.3 Leak-off behavior of a fixed gelant used for water shut-off
    3.2 Water shut-off performance of gel in fractured media
        3.2.1 Effect of gelant leak-off on gel formation
        3.2.2 Effect of gelant leak-off on water shut-off
        3.2.3 Water shut-off performance of a fixed gel along fracture
4 Conclusions



本文編號(hào)：3719226