【全國(guó)科技活動(dòng)周系列學(xué)術(shù)報(bào)告】
報(bào)告題目：Critical Thresholds for CO2 Foam Generation and Propagation in Homogeneous Porous Media（均質(zhì)多孔介質(zhì)中CO2泡沫產(chǎn)生和運(yùn)移臨界閾值研究）
報(bào) 告 人：唐金玉
報(bào)告時(shí)間：上午10:30-11:10, 2024.05.29
報(bào)告地點(diǎn)：線(xiàn)上
報(bào)告人簡(jiǎn)介：
唐金玉，現(xiàn)任阿聯(lián)酋大學(xué)助理教授及石油工程實(shí)驗(yàn)室主任，2019年獲得荷蘭代爾夫特理工大學(xué)地球科學(xué)與工程博士，其間曾赴荷蘭殼牌總部和巴西國(guó)家數(shù)學(xué)研究院任訪(fǎng)問(wèn)學(xué)者。主要研究方向包括多孔介質(zhì)滲流、氣驅(qū)及泡沫驅(qū)流度控制和地下儲(chǔ)能的基礎(chǔ)理論及應(yīng)用研究。常用的研究方法包括巖芯驅(qū)替、X-ray CT成像、微流控、分流理論和多相流建模。目前在Water Resources Research、SPE Journal、Energy、Fuel、Petroleum Science等國(guó)際知名期刊發(fā)表論文十余篇。
目前代表性成果包括推進(jìn)了泡沫對(duì)氣體流度控制的基礎(chǔ)理論，發(fā)現(xiàn)了泡沫在油氣水三相共存復(fù)雜條件下的基本流動(dòng)機(jī)制、建立了X-ray CT 成像測(cè)定泡沫驅(qū)三相飽和度的方法、提出了一個(gè)新的適用于2D微觀(guān)孔隙網(wǎng)絡(luò)的毛細(xì)管數(shù)定義。曾多次受邀國(guó)際知名企業(yè)及研究機(jī)構(gòu)做主題報(bào)告，包括阿布扎比國(guó)家石油公司、振華石油海外項(xiàng)目部、巴西國(guó)家數(shù)學(xué)研究院、荷蘭殼牌總部等。
內(nèi)容簡(jiǎn)介：
Foam is a promising means for improving gas sweep and trapping in geological formations. The successful application of foam for deep gas mobility control relies on its long-distance propagation away from an injection well, where pressure gradient or fluid velocity is low. Foam propagation is a result of two processes: convection of bubbles generated upstream (e.g. in the near-well region) and new generation of bubbles at the displacement front.
Prior studies with N2 foam show the existence of critical thresholds for both foam generation and propagation in terms of a minimum pressure gradient or equivalent minim total interstitial velocity. Data on N2 foam show that its long-distance propagation is challenging, as the minimum pressure gradients required for the generation and propagation are way much higher than that seen in the field. Our recent data with CO2 show that the minimum pressure gradient for triggering foam generation is 2–3 orders of magnitude less than with N2 foam, which can be easily attainable throughout a formation. This demonstrates that the generation of CO2 foam is much less an issue than for N2 foam.
Another issue we are addressing is the propagation of CO2 foam deep in formations. with In lab studies, with conventional corefloods that use cores of uniform diameter, it is difficult to determine the minimum pressure gradients/minimum total interstitial velocity for foam propagation. We would introduce a novel coreflood approach to quantify the conditions for foam propagation in geological formations.
主辦單位：油氣藏地質(zhì)及開(kāi)發(fā)工程全國(guó)重點(diǎn)實(shí)驗(yàn)室
西南石油大學(xué)石油與天然氣工程學(xué)院
SPE成都分部
科學(xué)技術(shù)發(fā)展研究院
2024年5月20日
