本文選題：渤海油田 + 速溶聚合物　； 參考：《東北石油大學(xué)》2015年碩士論文

【摘要】：渤海油藏具有儲(chǔ)層厚度大、平均滲透率高、非均質(zhì)性嚴(yán)重、原油粘度高和注入水礦化度高等特點(diǎn),導(dǎo)致水驅(qū)開發(fā)效果較差,亟待采取強(qiáng)化液流轉(zhuǎn)向措施來擴(kuò)大波及體積和改善水驅(qū)開發(fā)效果。近年來,在SZ36-1和LD10-1油田開展了聚合物驅(qū)和聚合物凝膠調(diào)驅(qū)礦場試驗(yàn),取得了明顯增油降水效果,但現(xiàn)有聚合物干粉熟化技術(shù)還不能完全滿足渤海油田調(diào)驅(qū)技術(shù)需求,如何縮短聚合物干粉熟化時(shí)間是技術(shù)人員關(guān)心的問題。依據(jù)渤海油田開發(fā)技術(shù)需求,本課題以油藏工程、物理化學(xué)和高分子化學(xué)為理論指導(dǎo),以儀器分析、化學(xué)分析和物理模擬為技術(shù)手段,以粘度性能、流變學(xué)性能、滲流特性和驅(qū)油效果為評價(jià)指標(biāo),以渤海主要油田油藏地質(zhì)特征和流體性質(zhì)為工程依據(jù),開展了速溶聚合物溶液和聚合物凝膠組成優(yōu)化和性能評價(jià),并進(jìn)行了聚合物凝膠調(diào)驅(qū)技術(shù)油藏適應(yīng)性實(shí)驗(yàn)研究。結(jié)果表明,采用正交試驗(yàn)方法和粘度為評價(jià)指標(biāo),優(yōu)化聚合物凝膠組成為:速溶聚合物(CP=3000mg/L),有機(jī)鉻交聯(lián)劑(聚:Cr3+=270:1)。聚合物凝膠性能各因素水平變動(dòng)對綜合指標(biāo)影響重要程度順序?yàn)?聚合物濃度聚合物類型交聯(lián)劑類型聚:Cr3+。與相同濃度聚合物溶液相比較,Cr3+聚合物凝膠阻力系數(shù)和殘余阻力系數(shù)較大,并且后續(xù)水驅(qū)階段初期注入壓力不降反升,表現(xiàn)出獨(dú)特滲流特性。交聯(lián)劑Cr3+與聚合物分子可以在多孔介質(zhì)內(nèi)發(fā)生交聯(lián)反應(yīng),巖心滲透率愈高,孔隙空間尺寸愈大,成膠效果愈好,并且靜態(tài)條件下成膠效果要好于動(dòng)態(tài)條件下的成膠效果。隨巖心平均滲透率和滲透率變異系數(shù)增加、調(diào)驅(qū)時(shí)機(jī)提前,聚合物凝膠調(diào)驅(qū)增油效果變好。采用物理模擬方法和采收率指標(biāo),優(yōu)化Cr3+聚合物凝膠組成:速溶聚合物,Cp=1000mg/L~2500mg/L。交聯(lián)劑為有機(jī)鉻“交聯(lián)劑3”,“聚:Cr3+”=120:1~270:1。段塞尺寸范圍0.05PV~0.15PV。
[Abstract]:The Bohai reservoir is characterized by large reservoir thickness, high average permeability, serious heterogeneity, high viscosity of crude oil and high salinity of injected water, which results in poor development effect of water flooding. It is urgent to take enhanced liquid flow steering measures to expand sweep volume and improve the development effect of water flooding. In recent years, field tests of polymer flooding and polymer gel flooding have been carried out in SZ36-1 and LD10-1 oilfields, and obvious effect of increasing oil and precipitation has been obtained. However, the existing curing technology of polymer dry powder can not fully meet the technical requirements of oil flooding in Bohai Oilfield. How to shorten the curing time of polymer dry powder is of concern to technicians. According to the development technology requirement of Bohai Oilfield, this subject is guided by reservoir engineering, physical chemistry and macromolecule chemistry, with instrument analysis, chemical analysis and physical simulation as the technical means, viscosity property and rheological property as the technical means. Based on the geological characteristics and fluid properties of the main oil reservoirs in Bohai Sea, the composition optimization and performance evaluation of the instant polymer solution and polymer gel were carried out on the basis of seepage characteristics and oil displacement effect. An experimental study on reservoir adaptability of polymer gel flooding technology was carried out. The results show that by using orthogonal test method and viscosity as evaluation index, the composition of polymer gel is optimized as follows: quick solution polymer (CP3) 3000mg / L ~ (-1), organic chromium crosslinking agent (Poly (Cr _ (3) 270: 1). The order of the influence of various factors on the comprehensive index is as follows: polymer concentration polymer type crosslinking agent type poly (Cr 3). Compared with the same concentration polymer solution, Cr3 polymer gel resistance coefficient and residual resistance coefficient are larger, and the initial injection pressure does not drop but rise in the subsequent water flooding stage, showing unique percolation characteristics. The crosslinking reaction between CR3 and polymer molecules can take place in porous media. The higher the core permeability is, the larger the pore space size is, the better the gelation effect is, and the better the gelling effect is under static condition than in dynamic condition. With the increase of average permeability and coefficient of variation of permeability, and the timing of flooding is advanced, the effect of polymer gel flooding is improved. The composition of Cr3 polymer gel was optimized by physical simulation method and oil recovery index. The composition of Cr3 polymer gel was optimized as follows: Cp1, 1000 mg 路L ~ (-1) / L ~ (2 500) mg 路L ~ (-1). The crosslinking agent is organic chromium "crosslinking agent 3", "Poly: Cr3" 120: 1 270: 1. The size range of slug is 0.05 PVN 0.15 PV.
【學(xué)位授予單位】：東北石油大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號(hào)】：TE53

【共引文獻(xiàn)】

相關(guān)期刊論文 前4條

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2 衣哲;;聚合物微球調(diào)驅(qū)機(jī)理研究[J];精細(xì)石油化工進(jìn)展;2013年06期

3 張杰;楊懷軍;盧祥國;曹豹;;聚合物驅(qū)合理黏度比實(shí)驗(yàn)研究——以大港油田港西三區(qū)為例[J];西安石油大學(xué)學(xué)報(bào)(自然科學(xué)版);2014年05期

4 謝坤;李強(qiáng);苑盛旺;盧祥國;;疏水締合聚合物與渤海儲(chǔ)層非均質(zhì)性適應(yīng)性研究[J];油田化學(xué);2015年01期

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本文編號(hào)：2017747