【摘要】：超低界面張力表面活性劑的室內探討已獲得了少許發(fā)展,然而因其高的合成和應用成本,因此還不能普通的現(xiàn)場應用。為了降低其成本,還需進一步深化探討了超低界面張力表面活性劑的制備以及復配。在處理油水井中,超低界面張力表面活性劑的研究和應用很較少,因此在室內研究以及現(xiàn)場應用方面還需積累更多的經驗。目前,表面活性劑在低界面張力的研究和應用有很多。其中,應用最多的是非離子表面活性劑。然而研究低界面張力的表面活性劑應用最多的是在驅油領域,但研究應用于清潔壓裂液的幾乎沒有。J210,是一種烷醇類表面活性劑,具有很強的降低表界面張力活性,在一系列實驗中,均具有很好的性能,合成出來的產品能夠滿足客戶需求,即將該成品溶解成0.45%的水溶液,加入萬分之二的破膠劑,置于90℃水浴鍋中放置4小時,讓其徹底破膠,冷卻后檢測其表界面張力,達到表面張力小于35 mN/m,界面張力小于2 mN/m的要求;并且沒有改變該產品原來的基本屬性,使用過程中甚至還較改良前有很好的交聯(lián)性能,懸砂性能優(yōu)異,這更有利于施工。以J210表面活劑制備了HR壓裂液。HR壓裂液具有高效的增粘能力,溶液具有優(yōu)良的抗菌穩(wěn)定性,基本不受細菌的影響。在50℃、70℃、90℃及120℃時,開展了HR壓裂液在恒溫條件下的恒定剪切實驗,結果表明該溶液的粘度可一起保持在標準要求的范圍內。粘彈性結果顯示實驗過程粘性顯然小于彈性,即HR壓裂液體為彈性流體,可保證其出色的懸砂性能。懸砂性能表明低分子稠化劑壓裂液的懸砂性能良好。殘渣研究表明,瓜膠壓裂液的殘渣高達300 ppm,而HR壓裂液則無殘渣。損害實驗表明,HR型壓裂液可明顯減少其他類型如水相壓裂液的損害,對支撐充填層的影響也較小較小,和胍膠型壓裂液濾液對比,HR壓裂液濾液對巖心的損害遠小于胍膠壓裂液濾液。上述結果表明HR壓裂液總體優(yōu)于傳統(tǒng)的胍膠壓裂液的性能。因此,本論文的開展將為超低界面張力表面活性劑在油水井處理中研究及應用提供理論依據并積累經驗,為日后這類表面活性劑的實際應用奠定堅實基礎。
[Abstract]:Although the laboratory study of ultra-low interfacial tension surfactants has made a little progress, because of its high cost of synthesis and application, it can not be used in the field. In order to reduce its cost, the preparation and compounding of ultralow interfacial tension surfactants should be further discussed. In the treatment of oil and water wells, the research and application of ultra-low interfacial tension surfactants are very few, so more experience should be accumulated in laboratory research and field application. At present, there are many researches and applications of surfactants in low interfacial tension. Among them, the most used non-ionic surfactants. However, the surfactants with low interfacial tension are mostly used in the field of oil displacement, but few of them are used in clean fracturing fluids. J210 is a kind of alkyl alcohol surfactants, which has strong activity to reduce the interfacial tension. In a series of experiments, the product has good performance, and the product can meet the needs of the customer. The finished product is dissolved into 0.45% aqueous solution, added 2/10000 gel breaking agent, and placed in 90 鈩，

本文編號：2403424