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20170612學(xué)術(shù)報(bào)告-致密油藏地質(zhì)力學(xué)耦合流動(dòng)模擬(Geomechanics Coupled Flow Simulation for Tight Oil Reservoirs)

發(fā)布日期:2017年06月09日       供稿:       編輯:hgyzyw       審核:       點(diǎn)擊:[]

 

報(bào)告題目:“致密油藏地質(zhì)力學(xué)耦合流動(dòng)模擬(Geomechanics Coupled Flow Simulation for Tight Oil Reservoirs)

報(bào) 告 人:吳玉樹 教授

時(shí) 間:2017612日(周一)下午14:30-16:00

地 點(diǎn):國(guó)家重點(diǎn)實(shí)驗(yàn)室A403學(xué)術(shù)報(bào)告廳

報(bào)告人單位:美國(guó)科羅拉多礦業(yè)大學(xué)(Colorado School of Mines)

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講座內(nèi)容:Tight oil reservoirs have been receiving great attentions due to their large reserves and contributions to total oil production. However, fluid flow behavior in tight oil reservoirs is not still well studied or understood. Specific characteristics of tight oil reservoirs, such as nano-pore scale and strong stress-dependency, result in the complex subsurface fluid flow behaviors. The recent field observations and laboratory experiments indicate that effects of pore confinement and rock compaction have non-negligible impacts on the production performance of tight oil reservoirs. On the other hand, there are many approximations or limitations to model tight oil reservoirs under effects of pore confinement and rock compaction with current reservoir simulation techniques. In this talk, we discuss a compositional flow model, coupled with geomechanics with capabilities to describe complex fluid flow behavior in multiphase multi-component tight oil reservoirs. In the model, the pore confinement effect is represented by the effect of capillary pressure on vapor-liquid equilibrium (VLE) and modeled with the VLE calculation method. The fully coupled flow-geomechanical model is developed from the linear elastic theory for the poro-elastic system. The rock compaction is then correlated with stress-dependent rock properties, especially, stress-dependent permeability. The numerical studies demonstrate the effect of capillary pressure on VLE, and further on production performance in addition to the effect of rock deformation from substantial decrease in reservoir pore pressure or large increase in effective stress. The reduction of pore radius due to geomechanical effect could increase the capillary pressure, which enlarges the influence of capillarity on VLE and further suppresses bubble point pressure, influencing multiphase fluid flow as well as effective stress through the flow-stress coupling process.

吳玉樹,美國(guó)科羅拉多礦業(yè)大學(xué)(CSM)教授、石油工程系主任、CMG油藏模擬首席、美國(guó)地質(zhì)協(xié)會(huì)會(huì)員。吳教授在國(guó)內(nèi)東北石油大學(xué)、西南石油大學(xué)先后獲得學(xué)士和碩士學(xué)位,后在加利福尼亞大學(xué)伯克利分校獲取碩士和博士學(xué)位。

吳教授在科羅拉多礦業(yè)大學(xué)主要從事油藏工程教學(xué)科研、研究生培養(yǎng)工作,研究領(lǐng)域主要包括油藏工程、多相流體和熱流量、地質(zhì)力學(xué)、非常規(guī)油氣成藏動(dòng)力學(xué)、CO2埋存、提高采收率(EOR)、地?zé)峁こ毯陀筒財(cái)?shù)值模擬。

吳教授的研究方向主要有:(1)非常規(guī)油氣藏流體動(dòng)力學(xué);(2)耦合過(guò)程的多相流場(chǎng)和熱力學(xué)、化學(xué)運(yùn)輸?shù)目紫逗土严督橘|(zhì);(3CO2封存與提高采收率應(yīng)用;(4)低溫壓裂技術(shù);(5)先進(jìn)的油藏?cái)?shù)值模擬技術(shù)。此前,他在美國(guó)勞倫斯-伯克利國(guó)家實(shí)驗(yàn)室工作了14年(1995-2008年)。在他的職業(yè)生涯中,他撰寫或合著了120篇期刊論文、17本專著及62SPE論文。

油氣藏地質(zhì)及開發(fā)工程國(guó)家重點(diǎn)實(shí)驗(yàn)室

石油與天然氣工程學(xué)院西南石油大學(xué)科研處

201769

上一條:20170614學(xué)術(shù)報(bào)告-Nanocellulose: an emerging material that has a great future 下一條:20170612油氣精英大講堂-美國(guó)高等教育與石油工業(yè)的未來(lái)(US Higher Education and the Future of Petroleum Industry)

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