本文關(guān)鍵詞： 單砂體 竄流通道 非均質(zhì)性 聚合物 評價　出處：《東北石油大學(xué)》2015年碩士論文　論文類型：學(xué)位論文

【摘要】：扶余油田已進入高含水開發(fā)后期,這一時期剩余油分布極其復(fù)雜,呈高度的分散狀態(tài),依靠調(diào)剖、堵水、細(xì)分層注水以及細(xì)分層壓裂等措施不能從根本上改善層內(nèi)、層間矛盾,而聚合物驅(qū)通過擴大波及體積,降低水油流度比以及粘彈性拖拉作用大幅度提高區(qū)塊采收率。通過對扶余油田西5-16區(qū)塊單砂體特征的研究以及儲層的非均質(zhì)性研究,找出形成竄流通道的主要因素,形成通過監(jiān)測資料和動態(tài)分析方法識別竄流通道的技術(shù)。借鑒大慶聚合物驅(qū)經(jīng)驗,結(jié)合扶余油田實際,不斷優(yōu)化聚合物驅(qū)方案設(shè)計,2010年至2011年完成水驅(qū)空白試驗、深度調(diào)剖封竄,聚合物驅(qū)的前置段塞注入等各項工作。2011年9月開始主段塞注入,扶余油田聚驅(qū)后平面、層間及層內(nèi)矛盾有所改善,但是地層能量恢復(fù)緩慢;扶余油層優(yōu)勢通道發(fā)育,控制難度大,雖然聚驅(qū)封堵了強優(yōu)勢通道,但驅(qū)替作用不強。通過對扶余油田聚合物驅(qū)效果主控因素的研究,指導(dǎo)扶余油田選擇適合聚合物驅(qū)的區(qū)塊及各項注入?yún)?shù)的優(yōu)化,區(qū)塊需要選取合適的分子量,并且保持較高的地層能量才能有效提高聚驅(qū)效果。
[Abstract]:Fuyu Oilfield has entered the late stage of high water cut development. In this period, the distribution of remaining oil is extremely complex and highly dispersed. Measures such as profile control, water shutoff, subdivision water injection and fracturing cannot fundamentally improve the contradiction between layers. Polymer flooding can greatly improve oil recovery by enlarging sweep volume, reducing water / oil mobility ratio and viscoelastic drag. Through the study of single sand body characteristics and reservoir heterogeneity in West 5-16 Block of Fuyu Oilfield, The main factors of formation of channeling channel are found out, and the technology of identifying channeling channel through monitoring data and dynamic analysis method is formed. The experience of Daqing polymer flooding is used for reference, and combined with the reality of Fuyu Oilfield, Continuous optimization of polymer flooding scheme design, completion of water drive blank test from 2010 to 2011, depth profile control and channeling control, pre-slug injection of polymer flooding, etc. Since September 2011, the main slug injection and the plane after polymer flooding in Fuyu Oilfield have been completed. Inter-layer and intra-layer contradictions have been improved, but the recovery of formation energy has been slow; the dominant channels of Fuyu reservoir have developed and it is difficult to control, although polymer flooding has blocked strong dominant channels, But the displacement effect is not strong. By studying the main controlling factors of polymer flooding effect in Fuyu Oilfield, we can guide Fuyu Oilfield to select suitable blocks for polymer flooding and optimize the injection parameters. And maintaining high formation energy can improve the effect of polymer flooding effectively.
【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】：TE357.46

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本文編號：1511781