資源描述：
《剪切條件下酚醛樹(shù)脂凍膠成膠性能地研究》由會(huì)員上傳分享，免費(fèi)在線閱讀，更多相關(guān)內(nèi)容在學(xué)術(shù)論文-天天文庫(kù)。
1、捅要j目前凍膠試驗(yàn)多采用室內(nèi)的靜態(tài)試驗(yàn)，但是在現(xiàn)場(chǎng)實(shí)際中，凍膠在注入的過(guò)程中會(huì)受到包括泵、井筒、管線、地層等的多種剪切，其成膠情況與靜態(tài)成膠情況有很多差別，本文采用IKA攪拌器、IKA振蕩器，填砂管和微管模擬酚醛樹(shù)脂凍膠在配制、注入以及運(yùn)移過(guò)程中受到的剪切作用，考察了酚醛樹(shù)脂凍膠在剪切條件下的動(dòng)態(tài)成膠時(shí)間，動(dòng)態(tài)成膠后的成膠強(qiáng)度、臨界成膠剪切速率，粘度恢復(fù)能力，剪切前后的微觀形態(tài)等，并與酚醛樹(shù)脂凍膠在安瓿瓶?jī)?nèi)靜態(tài)成膠的成膠情況進(jìn)行對(duì)比，另外還考察了聚合物和交聯(lián)劑質(zhì)量分?jǐn)?shù)、剪切速率、滲透率等對(duì)酚醛樹(shù)脂凍膠動(dòng)態(tài)成膠的影響。研究結(jié)果表明：剪切條件下酚醛樹(shù)脂凍膠的成膠時(shí)間比靜態(tài)條件下的成
2、膠時(shí)間長(zhǎng)，成膠后的強(qiáng)度低；酚醛樹(shù)脂凍膠在經(jīng)過(guò)攪拌剪切和振蕩剪切后靜置粘度可以有不同程度的恢復(fù)；隨著聚合物和交聯(lián)劑質(zhì)量分?jǐn)?shù)的增加、攪拌剪切速率和振蕩剪切速率的減小、多孔介質(zhì)滲透率的增加，酚醛樹(shù)脂凍膠在微管中注入速度的降低，酚醛樹(shù)脂凍膠的成膠時(shí)間縮短，成膠后強(qiáng)度增大，封堵能力增強(qiáng)；在現(xiàn)場(chǎng)注入過(guò)程中，應(yīng)使酚醛樹(shù)脂凍膠在誘導(dǎo)階段結(jié)束之前注入地層，并保證其在在地層中的注入速度小于1．54m／d時(shí)，以使其在悶井后凍膠粘度能夠恢復(fù)至較大值；用掃描電鏡可以看到酚醛樹(shù)脂凍膠在未受到剪切時(shí)為規(guī)則的三維空間網(wǎng)狀結(jié)構(gòu)，經(jīng)過(guò)多孔介質(zhì)剪切后三維網(wǎng)狀結(jié)構(gòu)被破壞，變得不完整。關(guān)鍵詞：凍膠，酚醛樹(shù)脂凍膠，剪切，
3、動(dòng)態(tài)成膠StudyontheGellingPerformanceofPhenolicResinGelunderShearingLvPeng(Oil&GasFieldDevelopmentEngineering)DirectedbyProf．WangYefeiAbstractCurrently,theexperimentsunderstaticconditionsareoftenusedtoinstructthefieldtest,however,thegelexperiencesshearfrompumps，wellbores，pipelinesandformationsdur
4、ingtheinjectionprocess，thegellingbehaviorisquitedifferentfromthatunderstaticconditions，theIKAagitator,IKAoscillator,sandpackandmicrotubuleareemployedtosimulatetheshearthephenolicresingelundergoesduringthepreparation，兩exztionandtravellingprocess．Thedynamicgelationtime，dynamicgelstrength，criti
5、calshearrates，restorabilityaftershearandthemorphologyareresearchedandthegellingsituationsarealsocomparedwiththatunderstaticcondition，theeffectofpolymeranderosslinkerconcentrations，shearrates，permeabilityonthedynamicgellingprocessareresearchedtoo．Theresearchresultsshow：thedynamicgelationtimei
6、sdelayedandthegelstrengthisreducedundershearing；theviscosityofstabilizingforacertaintimeaftertheshearofagitatorandoscillatorisabletoberestored；theincreaseofpolymerandcrosslinkerconcentrations，thedecreaseofshearratesunderagitatorandoscillatorshear,augmentofpermeability,reductionoftheinjection
7、speedsinmicrotubulesarehelpfultoshortenthedynamicgelationtimeandenhancethegelstrength．．Inthefieldtesttheinjectiontimeofphenolicresingelissuggestedtobeshorterthantheinductiontimeandthe竭ectionspeedsmallerthan1．54m／dinordertogainahi曲viscosityafterwell
