本文選題：弱凝膠 + 聚合物�。� 參考：《石油勘探與開發(fā)》2017年02期

【摘要】：將核磁共振可視化技術(shù)和巖心驅(qū)替實(shí)驗(yàn)相結(jié)合,觀察了弱凝膠在巖心中的分布特征和運(yùn)移規(guī)律,對不同聚合物-弱凝膠組合方式下的驅(qū)油特征進(jìn)行可視化實(shí)驗(yàn)研究。將聚合物和弱凝膠進(jìn)行組合,設(shè)計(jì)了3種組合方式:水驅(qū)+聚合物驅(qū)(方式1),水驅(qū)+聚合物驅(qū)+弱凝膠驅(qū)(方式2),水驅(qū)+弱凝膠驅(qū)+聚合物驅(qū)(方式3)。對不同組合方式在驅(qū)替過程中的壓力變化、T_2譜特征、核磁共振圖像、驅(qū)油效率進(jìn)行了研究。研究表明,核磁共振圖像可直觀表征弱凝膠在巖心中的形態(tài)分布及運(yùn)移特征,也可反映出殘余油的分布特征;T_2譜特征表明聚合物和弱凝膠均具有調(diào)剖和驅(qū)油作用,組合方式2的調(diào)剖效果最明顯;3種組合方式中,組合方式2的驅(qū)油效率最大,為78.84%,比初次水驅(qū)提高了18.33%。
[Abstract]:By combining nuclear magnetic resonance visualization technology with core displacement experiment, the distribution and migration of weak gel in core were observed, and the oil displacement characteristics of different polymer and weak gel combinations were studied by visual experiments. Three combinations of polymer and weak gel were designed: water flooding polymer flooding (mode 1), water flooding polymer flooding weak gel flooding (mode 2), water flooding weak gel flooding polymer flooding (mode 3). The characteristics of T _ 2 spectrum, nuclear magnetic resonance image and oil displacement efficiency of different combinations during displacement are studied. The results show that the NMR images can directly characterize the morphological distribution and migration characteristics of weak gels in the core, and can also reflect the distribution characteristics of residual oil. The results show that both polymer and weak gel have profile control and oil displacement effects. The profile control effect of combination mode 2 is the most obvious, and combination mode 2 has the highest oil displacement efficiency, which is 78.84, which is 18.33 higher than that of the first water flooding.
【作者單位】： 上海大學(xué)上海市應(yīng)用數(shù)學(xué)和力學(xué)研究所;上海市力學(xué)在能源工程中的應(yīng)用重點(diǎn)實(shí)驗(yàn)室;
【基金】：國家自然科學(xué)基金(50874071;51274136) 上海市重點(diǎn)學(xué)科建設(shè)項(xiàng)目(S30106) 國家高技術(shù)研究發(fā)展計(jì)劃(863)項(xiàng)目(2008AA06Z201) 上海市教育委員會高峰學(xué)科建設(shè)項(xiàng)目
【分類號】：TE357.46

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