Sodium metasilicate as blocking performance for enhanced oil recovery (EOR)

Samnean Chea, Kyuro Sasaki, Yuichi Sugai, Yuji Yoshiki

研究成果: Contribution to conferencePaper査読

抄録

In this paper, an oil recovery process has been studied by injecting sodium metasilicate (Na2SiO3·9H2O) solution to form blocking gel with CO2 in larger permeability flow passes. The Na2SiO3·9H2O solution is an alkali to reduce interfacial tension (IFT) reduction. The two functions of reducing IFT and blocking channeling thief passes formed by Na2SiO3·9H2O solution and CO2 gas were investigated. The experiments were carried out to characterize and evaluate the gel system based on gelation time, gel strength, and gel stability through the effecting factors such as Na2SiO3·9H2O concentration, pressure, temperature, salt (NaCl), and divalent ion (Ca2+). The blocking performance of gel was also investigated using gas permeability test using Berea sandstone saturated Na2SiO3·9H2O solution. Furthermore, the numerical simulations on the effectiveness of blocking gel on oil production were carried out using with 2D heterogeneous reservoir model by CMG-STARS. The simulation results showed that cumulative oil production was increased 73% of the residual oil by blocking water channel thief zone by gel formation compared with that of water flooding.
本文言語英語
ページ1-5
ページ数5
出版ステータス出版済み - 11 7 2017
イベント23rd Formation Evaluation Symposium of Japan - JOGMEC TRC, Chiba, 日本
継続期間: 10 10 201710 11 2017

会議

会議23rd Formation Evaluation Symposium of Japan
Country日本
CityChiba
Period10/10/1710/11/17

All Science Journal Classification (ASJC) codes

  • Fuel Technology

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