三種不同VES的測(cè)試結(jié)果及分析
三種不同VES的測(cè)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(gè)小時(shí)的測(cè)試結(jié)果如下：
測(cè)試方法以及測(cè)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(cè)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(jìn)行測(cè)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(cè)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(gè)小時(shí)，整個(gè)測(cè)試共計(jì)時(shí)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.
二 測(cè)試結(jié)果
II. Test Results
1 140度條件下2小時(shí)的測(cè)試圖譜
2 150度條件下2小時(shí)的測(cè)試圖譜
3 140度條件下2小時(shí)的測(cè)試圖譜
上面三個(gè)圖譜，是三種不同VES的圖譜。兩個(gè)測(cè)試檢測(cè)配方相同，圖1溫度是140度兩小時(shí)、圖2溫度是150度兩小時(shí)、圖3溫度是140度兩小時(shí)。
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.
圖1顯示，隨著時(shí)間的持續(xù)，粘度持續(xù)下降，如果時(shí)間再延長(zhǎng)，粘度還會(huì)持續(xù)減小，其原因是功能性基團(tuán)在惡劣檢測(cè)條件上，功能基團(tuán)持續(xù)不斷遭到破壞，粘度就呈一直下降趨勢(shì)。
圖2顯示，隨著時(shí)間的持續(xù)，粘度并未隨著時(shí)間的延續(xù)呈明顯下降趨勢(shì)，而是平行于橫軸，說(shuō)明在惡劣檢測(cè)條件下，功能基團(tuán)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.
圖3顯示，溫度從常溫升到120度這個(gè)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(gè)區(qū)間，膠束網(wǎng)格在這個(gè)溫度下由于熱運(yùn)動(dòng)的持續(xù)加劇，而使粘度迅速降低；降到*低點(diǎn)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(dá)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(hù)，膠束網(wǎng)格的動(dòng)態(tài)平衡保持在一個(gè)比較高的水平上；故而粘度曲線緩上升后達(dá)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.