芥酸酰胺羥磺甜菜堿,又名芥酸酰胺羥磺基丙基甜菜堿 芥酸酰胺丙基羥磺基甜菜堿,芥酸酰胺羥磺基甜菜堿等,英文名稱:1-Propanaminium, N-(2-hydroxyethyl)-N,N-dimethyl-3-[[(13Z)-1-oxo-13-docosenyl]amino]-, chloride
CAS:581089-19-2,分子式:C29N2O2+.Cl-,分子量:443.7755
結(jié)構(gòu)式如下:
芥酸酰胺羥磺甜菜堿的特性如下:
1.具有優(yōu)良的抗鈣性能,對Ca2 + 的容忍度達8 g.L-1以上。
2.具有顯著的降低油水界面張力的能力。與其它表面活性劑復(fù)配,具有很好的協(xié)同效應(yīng)。EHSB40多表活復(fù)配體系可與多種油藏條件原油達到10-4 ~10-3mN/m 數(shù)量級的超低界面張力。
3.攜砂性能測試表明該體系在砂比為30%甚至40%時均能達到較好的攜砂效果。
4.破膠性能測試表明該體系在地層水或原油的存在下即可破膠,體系破膠后無殘渣 。
5.在乙醇水溶液中,本產(chǎn)品可形成蠕蟲狀膠束,增粘性能甚佳。
6.是可生物降解的粘彈性表面活性劑。
產(chǎn)品用途:由于芥酸酰胺羥磺甜菜堿有較好的黏性,能形成凝膠,可應(yīng)用于壓裂液和酸液稠化劑等方面。可作為較理想的驅(qū)油用表面活性劑應(yīng)用于化學(xué)復(fù)合驅(qū),可提高原油采收率15%以上。
芥酸酰胺羥磺甜菜堿的建議應(yīng)用比例和方法:建議添加量為1.0-4.0%,產(chǎn)品先溶解于鹽酸等酸性溶液中,然后稀釋后使用。
芥酸酰胺羥磺甜菜堿的指標(biāo)如下:
因此,對于芥酸酰胺丙基羥丙基磺酸基甜菜堿與鈣離子、鎂離子在較高溫度下產(chǎn)生較高粘度成為衡量芥酸酰胺丙基羥丙基磺酸基甜菜堿是否是較好黏彈表面活性劑的重要指標(biāo)之一。
以下是幾種以EHSB為有效含量的不同的VES的測試結(jié)果及分析
三種不同的VES轉(zhuǎn)向劑,在配方條件下,在140度和150度條件下2個小時的測試結(jié)果如下:
測試方法以及測試結(jié)果如下:
This section presents the test results for three different VES diverting agents, showing their performance over 2 hours at 140°C and 150°C under the specified formulation conditions.
The testing methodology and corresponding results are detailed below:
一 測試方法
I. Testing Methods
1、基液配制:在20%鹽酸以及其它助劑配合條件下進行測試。
1. Base Fluid Preparation
The test was conducted under the conditions of 20% hydrochloric acid combined with other additives.
2、流變性能測試
將殘酸洗液轉(zhuǎn)移到流變儀中,將溫度從25℃提高到140℃溫度或150度,升溫溫度梯度為3℃/min,剪切速率為100s-1。升溫至140度或150度后,保持溫度2個小時,整個測試共計時間大約150分鐘。
2. Rheological Performance Testing
We transferred the spent acid cleaning fluid to the rheometer and raised the temperature from 25°C to either 140°C or 150°C. This was done at a heating rate of 3°C/min and a shear rate of 100 s?1. Following this, we maintained the temperature for 2 hours, resulting in a total test time of approximately 150 minutes.
下面三個圖譜,是三種不同VES的圖譜。兩個測試檢測配方相同,圖1溫度是140度兩小時、圖2溫度是150度兩小時、圖3溫度是140度兩小時。
The three graphs above correspond to three different types of VES. The test formulations are the same for both experiments: Figure 1 was tested at 140°F for two hours, Figure 2 at 150°F for two hours, and Figure 3 at 140°F for two hours.
二 測試結(jié)果
II. Test Results
1 140度條件下2小時的測試圖譜
圖1顯示,隨著時間的持續(xù),粘度持續(xù)下降,如果時間再延長,粘度還會持續(xù)減小,其原因是功能性基團在惡劣檢測條件上,功能基團持續(xù)不斷遭到破壞,粘度就呈一直下降趨勢。
2 150度條件下2小時的測試圖譜

圖2顯示,隨著時間的持續(xù),粘度并未隨著時間的延續(xù)呈明顯下降趨勢,而是平行于橫軸,說明在惡劣檢測條件下,功能基團持續(xù)發(fā)揮作用,并未遭到破壞,因此粘度曲線呈比較平坦的線。
Figure 2 shows that as time progresses, the viscosity does not exhibit a significant decreasing trend over time but remains parallel to the horizontal axis. This indicates that under harsh testing conditions, the functional groups continue to remain effective without being degraded, resulting in a relatively flat viscosity curve.
3 140度條件下2小時的測試圖譜
圖3顯示,溫度從常溫升到120度這個區(qū)間,膠束網(wǎng)格的粘度隨溫度的不斷上升得到不斷的優(yōu)化排列而上升,120度到140度的這個區(qū)間,膠束網(wǎng)格在這個溫度下由于熱運動的持續(xù)加劇,而使粘度迅速降低;降到*低點后,在持續(xù)140度下,被破壞的膠束網(wǎng)格由于重新排列為較為致密、穩(wěn)定,粘度緩慢上升,直至達到新的平衡,粘度穩(wěn)定在270cp左右,并且由于親水頭基得到有效的保護,膠束網(wǎng)格的動態(tài)平衡保持在一個比較高的水平上;故而粘度曲線緩上升后達到穩(wěn)定平行。
Figure 3 shows that as the temperature increased from ambient to 120°C, the viscosity of the micellar network rose due to continuous optimization of its arrangement with increasing temperature. In the range of 120°C to 140°C, however, intensified thermal motion caused the viscosity to decrease rapidly. After reaching the lowest point, under sustained exposure to 140°C, the disrupted micellar network rearranged into a more compact and stable structure, leading to a gradual recovery in viscosity until a new equilibrium was achieved. The viscosity eventually stabilized at around 270 cP, and due to effective protection of the hydrophilic head groups, the dynamic equilibrium of the micellar network was maintained at a relatively high level. As a result, the viscosity curve slowly rose and then plateaued.
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