本文選題：本征交聯(lián)流變動力方程 + 剪切交聯(lián)流變動力學(xué)方程��； 參考：《華東理工大學(xué)》2015年碩士論文

【摘要】：本文研究了羥丙基瓜爾膠(HPG)、改性纖維素(FAG-500)、耐高溫聚合物(XST239)、耐海水聚合物(XST252)和速溶黃原膠(XCD)五種線性膠體系中,單顆粒支撐劑沉降速率與體系粘彈性的關(guān)系。研究了羥丙基瓜爾膠、改性纖維素和耐高溫聚合物的靜態(tài)交聯(lián)過程和本征交聯(lián)流變動力學(xué)方程,以及穩(wěn)態(tài)剪切流場中的交聯(lián)過程和剪切交聯(lián)流變動力學(xué)方程,獲得以下結(jié)論：1)線性膠壓裂液具有良好的剪切變稀性質(zhì),流動曲線可用非線性共轉(zhuǎn)Jeffreys模型描述。單顆粒支撐劑陶粒在五種線性膠壓裂液中的沉降速率與線性膠粘、彈模量和復(fù)黏度的關(guān)系符合冪律模型,模型參數(shù)與線性膠種類相關(guān)。證明線性膠溶液具有微觀網(wǎng)絡(luò)結(jié)構(gòu)。2)明確了靜態(tài)交聯(lián)過程中交聯(lián)溫度、交聯(lián)劑濃度和稠化劑濃度等對HPG、FAG-500和XST239壓裂液體系彈性因子EI變化曲線的影響,證實(shí)壓裂液本征交聯(lián)流變動力學(xué)方程可表征靜態(tài)交聯(lián)過程,獲得了HPG、FAG-500和XST239壓裂液在實(shí)驗(yàn)條件范圍內(nèi)本征交聯(lián)流變動力學(xué)方程。其中,FAG-500體系的本征交聯(lián)過程分為兩個階段,均可用交聯(lián)流變動力學(xué)方程描述。3)在剪切流場中,明確了交聯(lián)溫度、交聯(lián)劑濃度、稠化劑濃度和剪切速率等因素對HPG、FAG-500和XST239壓裂液體系交聯(lián)過程中黏度隨時間的變化關(guān)系。建立了壓裂液剪切交聯(lián)流變動力學(xué)方程,可確切表征剪切交聯(lián)流變過程,獲得了各壓裂液在實(shí)驗(yàn)條件范圍內(nèi)剪切交聯(lián)流變動力學(xué)方程。4)在可視化壓裂支撐劑裂縫剖面大型物模裝置中,獲得了不同壓裂液體系、不同支撐劑種類和不同砂比攜砂液在平行板中的流動狀態(tài)；明確了攜砂液在模擬管路中的交聯(lián)過程,證明剪切交聯(lián)流變動力學(xué)方程可表征交聯(lián)過程黏度隨時間變化曲線,模型參數(shù)物理意義明確合理。本文的研究結(jié)果為壓裂液的應(yīng)用提供流變學(xué)基礎(chǔ)。
[Abstract]:In this paper, the relationship between the settling rate of single particle proppant and viscoelasticity of five linear adhesive systems, HPGG, FAG-500, XST239, XST252 and XCD) has been studied. The static crosslinking process and intrinsic crosslinking rheodynamic equations of hydroxypropyl guar gum, modified cellulose and high temperature resistant polymers, as well as the crosslinking process and shear crosslinking kinetics equation in steady shear flow field were studied. The following conclusions are obtained: 1) the linear gel fracturing fluid has good shear thinning property and the flow curve can be described by nonlinear co-rotating Jeffreys model. The relationship between settling rate and linear adhesive elastic modulus and complex viscosity of single particle proppant ceramsite in five kinds of linear adhesive fracturing fluids is in accordance with the power law model and the model parameters are related to the type of linear adhesive. It is proved that linear gel solution has microcosmic network structure. 2) the effects of crosslinking temperature, crosslinking agent concentration and thickener concentration on the elastic factor ei curves of HPGN FAG-500 and XST239 fracturing fluids are determined. It is proved that the intrinsic crosslinking rheodynamic equation of fracturing fluid can characterize the static crosslinking process, and the intrinsic crosslinking rheodynamic equations of HPGFFAG-500 and XST239 fracturing fluid are obtained in the range of experimental conditions. The intrinsic crosslinking process of FAG-500 system is divided into two stages, both of which can be described by the crosslinking rheological kinetics equation .3) in the shear flow field, the crosslinking temperature and the concentration of crosslinking agent are determined. The effect of thickener concentration and shear rate on the viscosity of HPGF FAG-500 and XST239 fracturing fluid system during crosslinking was studied. The rheological equation of shear crosslinking of fracturing fluid was established, and the rheological process of shear crosslinking could be accurately characterized. The rheological equation of shear crosslinking for each fracturing fluid was obtained in the range of experimental conditions. 4) different fracturing fluid systems were obtained in a large scale model device of fracture profile of fracturing proppant. The flow state of sand carrying fluid with different proppant types and different sand ratios in parallel plates was determined, the crosslinking process of sand carrying fluid in simulated pipes was clarified, and the shear crosslinking rheological kinetics equation was proved to be able to characterize the viscosity curve of crosslinking process with time. The physical meaning of the model parameters is clear and reasonable. The results of this paper provide a rheological basis for the application of fracturing fluids.
【學(xué)位授予單位】：華東理工大學(xué)
【學(xué)位級別】：碩士
【學(xué)位授予年份】：2015
【分類號】：TE357.12

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