本文選題：壓裂液 + 破乳劑�。� 參考：《東北石油大學(xué)》2017年碩士論文

【摘要】：近年來,大慶油田低滲透區(qū)塊油田老井平均每年壓裂60-80口,95%以上的新井也需壓裂后投產(chǎn),龍一聯(lián)地區(qū)為有效動用超低滲透高臺子層,需采取大規(guī)模壓裂措施,壓裂后的油井采出液中含有胍膠等大量的化學(xué)添加劑,使采出液成分復(fù)雜,乳化情況嚴重,這些添加劑隨采出液直接進入聯(lián)合站,使含油采出液處理后,懸浮物含量不達標(biāo),對聯(lián)合站原油電脫水系統(tǒng)及污水處理系統(tǒng)平穩(wěn)運行造成很大沖擊。本文旨在分析研究地層殘余壓裂液中影響采出液破乳脫水的因素,包括利用數(shù)顯式黏度測試儀對含壓裂液的返排液流變性的測定、利用顆粒圖像分析儀檢測了含壓裂液的采出液的乳化情況、分析含有壓裂液的乳狀液對脫水效果的影響,利用界面張力儀測定了采出液的界面張力,利用Zeta電位儀對不同含量壓裂液的采出液進行電位測定,確定影響乳狀液穩(wěn)定性的因素;進行破乳劑室內(nèi)篩選和復(fù)配,并進行礦場試驗,評價破乳劑破乳脫水效果。實驗結(jié)果表明:導(dǎo)致含壓裂液采出液脫水不達標(biāo)的因素依次為:助排劑稠化劑防膨劑降粘劑穩(wěn)定劑破膠劑殺菌劑;實驗優(yōu)選出最佳復(fù)配破乳劑為PT6682B與PS-639-06按1:3配比混合,確定了最佳加藥溫度為65℃;確定了不同壓裂液含量、不同含水率、不同溫度下最佳電脫電壓、電脫時間、工作壓力;并確定了在5種不同含量壓裂液條件下的“五合一”裝置的最佳運行參數(shù)。
[Abstract]:In recent years, the average number of new wells in the old wells in low permeability blocks of Daqing Oilfield is 60-80 or more than 95% per year. In order to effectively produce ultra-low permeability high table beds, large-scale fracturing measures are needed in Longyi area. After fracturing, a large number of chemical additives such as guanidine gum are found in the produced fluid after fracturing, which makes the composition of the recovery fluid complex and the emulsification situation serious. These additives enter the combined station directly with the produced fluid, so that the content of suspended solids does not reach the standard after the treatment of the oil-bearing produced liquid. It has a great impact on the steady operation of crude oil electric dehydration system and sewage treatment system. The purpose of this paper is to analyze and study the factors that affect the demulsification and dehydration of the residual fracturing fluid, including the determination of rheology of the fluid containing fracturing fluid by using a numerical explicit viscosity tester. The emulsion of fracturing fluid containing fracturing fluid was detected by particle image analyzer, the influence of emulsion containing fracturing fluid on dehydration effect was analyzed, and the interfacial tension of produced fluid was measured by interfacial tension meter. The potential of fracturing fluid with different content was determined by Zeta potentiometer to determine the factors that affect the stability of emulsion, and the demulsifier was selected and mixed in laboratory, and the field test was carried out to evaluate the effect of demulsifier demulsification and dehydration. The experimental results show that the factors leading to the substandard dehydration of fracturing fluid are as follows: thickener, antiswelling agent, viscosity reducer, stabilizer, gel breaker, bactericide, and the optimum demulsifier is PT6682B and PS-639-06 mixed at 1:3. The optimum temperature is 65 鈩，

本文編號：1858594