【摘要】：我國(guó)稠油資源十分豐富,但總體采收率較低,因此如何進(jìn)一步提高普通稠油油藏采收率是開發(fā)中亟待解決的技術(shù)難題。本文對(duì)水包油乳狀液提高普通稠油油藏的采收率進(jìn)行了可行性研究。論文首先對(duì)乳狀液驅(qū)油體系進(jìn)行了配方研究,研究結(jié)果表明,用質(zhì)量分?jǐn)?shù)大于0.1%的表面活性劑TA-13制備的乳狀液,可以穩(wěn)定15天以上,但是乳狀液耐鹽性較差;在表面活性劑TA-13溶液中加入納米顆粒之后,制成的乳狀液穩(wěn)定性和耐鹽性均得到顯著提高,且當(dāng)納米顆粒質(zhì)量分?jǐn)?shù)超過(guò)0.3%時(shí),乳狀液的粘度顯著上升。物理模擬實(shí)驗(yàn)表明,水包油乳狀液能降低巖心滲透率。就封堵能力而言,表面活性劑與納米顆粒協(xié)同穩(wěn)定的乳狀液有更好的封堵能力。就驅(qū)油效果而言,表面活性劑與納米顆粒協(xié)同穩(wěn)定的乳狀液也具有更好的驅(qū)油效果,更廣的滲透率使用范圍。微觀可視化實(shí)驗(yàn)表明,乳狀液一方面可以滲入到稠油當(dāng)中,抑制低粘度驅(qū)油體系的指進(jìn)。另一方面降低了與前沿相接觸的稠油的粘度,提高了稠油的流度。另外,乳狀液中的表面活性劑,可將稠油乳化成水包油的乳化液滴,進(jìn)一步提高了洗油效率。
[Abstract]:China is rich in heavy oil resources, but the overall recovery rate is relatively low. Therefore, how to further improve the recovery rate of ordinary heavy oil reservoirs is a technical problem to be solved urgently in the development of heavy oil reservoirs. In this paper, the feasibility of water-in-oil emulsion to improve the recovery of ordinary heavy oil reservoirs is studied. At first, the formulation of emulsion flooding system was studied. The results showed that the emulsion prepared by surfactant TA-13 with mass fraction greater than 0.1% could be stable for more than 15 days, but the salt tolerance of emulsion was poor. When nano-particles were added to surfactant TA-13 solution, the stability and salt tolerance of the emulsion were improved significantly, and the viscosity of emulsion increased significantly when the mass fraction of nano-particles was more than 0.3%. Physical simulation experiments show that water-in-oil emulsion can reduce core permeability. As far as plugging ability is concerned, surfactant and nano-particles have better plugging ability in synergistic and stable emulsion. As far as the oil displacement effect is concerned, the synergetic and stable emulsions of surfactant and nano-particles also have better oil displacement effect and wider application range of permeability. The microscopic visualization experiment shows that the emulsion can infiltrate into heavy oil on the one hand, and inhibit the fingering of low viscosity oil displacement system on the one hand. On the other hand, the viscosity of heavy oil in contact with front phase is reduced, and the fluidity of heavy oil is improved. In addition, surfactant in emulsion can further improve washing efficiency by emulsifying heavy oil into water-in-oil emulsion droplets.
【學(xué)位授予單位】：中國(guó)石油大學(xué)(華東)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE357.46

【參考文獻(xiàn)】

相關(guān)期刊論文 前4條

1 裴海華;張貴才;葛際江;劉清華;王洋;王沖;;化學(xué)驅(qū)提高普通稠油采收率的研究進(jìn)展[J];油田化學(xué);2010年03期

2 李剛;陳軍;魏長(zhǎng)晶;肖喜慶;潘成松;;乳狀液驅(qū)替效率與其影響因素的關(guān)系研究[J];內(nèi)蒙古石油化工;2008年18期

3 于連東;世界稠油資源的分布及其開采技術(shù)的現(xiàn)狀與展望[J];特種油氣藏;2001年02期

4 匡佩瓊;尉立崗;黃延章;;乳狀液驅(qū)油實(shí)驗(yàn)研究[J];石油勘探與開發(fā);1988年03期

相關(guān)博士學(xué)位論文 前1條

1 王鳳琴;乳狀液在多孔介質(zhì)中滲流規(guī)律研究[D];西北大學(xué);2005年

，

本文編號(hào)：2433340