相关实验视频
Updated: Jun 30, 2025

13:19
Enhanced Oil Recovery using a Combination of Biosurfactants
Published on: June 3, 2022
5.2K
离子表面活性剂的长期热稳定性,以改善在高盐度高温度条件下的石油生产
Jian Hou1, Tianping Huang1, Mohammed Alotaibi2
1Aramco Asia Beijing Research China, Beijing 100102, China.
ACS omega
|March 18, 2024
概括
硫贝表面活性剂在高盐度条件下表现出优越的热和化学稳定性,性能优于其他离子类型. 这使得它们非常适合在恶劣的水库中长期使用化学注射.
科学领域:
- 表面化学 表面化学
- 材料科学 材料科学 材料科学
- 石油工程是石油工程中的一个.
背景情况:
- 稳定的表面活性剂对于降低表面张力和稳定化学注射应用中的乳液至关重要.
- 高度和高温度环境对表面活性剂的性能和寿命构成重大挑战.
研究的目的:
- 系统地研究六种不同的表面活性剂对六种不同表面活性剂的热稳定性的离子类型影响.
- 评估表面活性剂在高度水中的长期性能.
- 为了确定最合适的表面活性剂在具有挑战性的储条件下进行化学注射.
主要方法:
- 选择了六种表面活性剂:二二碳酸 (LAS),二二硫酸 (SLS),二二硫酸 (SDS),二二三甲基化物 (DTAB),3 - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - N,N-二甲基米里斯) 硫酸 (SB3-14),以及一种硫乙配方 (PCT-10).
- 表面活性剂在高度水中 (TDS = 57,600 ppm) 在95°C老化150天.
- 老化样品的特征包括旋转滴张力测量,高性能液态染色学和红外光谱学.
主要成果:
- 长期稳定性序列被确定为:硫贝 ≈ 四级 > 硫酸盐 > 硫酸盐 > 碳酸盐.
- 碳酸盐表面活性剂沉,而硫酸盐和硫酸盐通过水解降解.
- 硫乙烯和四级氨基表面活性剂的分解最小,尽管注意到潜在的离子头消除.
- 溶解的氧气加速了硫酸盐的降解.
结论:
- 与硫酸盐,硫酸盐和碳酸盐相比,硫贝和四级表面活性剂在高盐度,高温度环境中表现出优越的热和化学稳定性.
- 硫贝表面活性剂在热老化后保持了最高的乳化能力.
- 硫贝表面活性剂是恶劣水库中长期化学注射应用的有希望的候选者.
相关概念视频
Entropy and Solvation
7.1K
The process of surrounding a solute with solvent is called solvation. It involves evenly distributing the solute within the solvent. The rule of thumb for determining a solvent for a given compound is that like dissolves like. A good solvent has molecular characteristics similar to those of the compound to be dissolved. For example, polar solutions dissolve polar solutes, and apolar solvents dissolve apolar solutes. A polar solvent is a solvent that has a high dielectric constant (ϵ...
7.1K
Ionic Strength: Effects on Chemical Equilibria
1.5K
The addition of an inert ionic compound increases the solubility of a sparingly soluble salt. For example, adding potassium nitrate to a saturated solution of calcium sulfate significantly enhances the solubility of calcium sulfate. Le Châtelier's principle cannot predict this shift in the equilibrium. Instead, this could be explained in terms of changes in the effective concentration of the ions in solution in the presence of added inert salt.
In this solution, the primary...
In this solution, the primary...
1.5K
Membrane Fluidity
152.2K
Cell membranes are composed of phospholipids, proteins, and carbohydrates loosely attached to one another through chemical interactions. Molecules are generally able to move about in the plane of the membrane, giving the membrane its flexible nature called fluidity. Two other features of the membrane contribute to membrane fluidity: the chemical structure of the phospholipids and the presence of cholesterol in the membrane.
152.2K
Colloids
17.5K
Children at play often make suspensions such as mixtures of mud and water, flour and water, or a suspension of solid pigments in water known as tempera paint. These suspensions are heterogeneous mixtures composed of relatively large particles that are visible to the naked eye or can be seen with a magnifying glass. They are cloudy, and the suspended particles settle out after mixing. On the other hand, a solution is a homogeneous mixture in which no settling occurs and in which the dissolved...
17.5K
Solubility
17.5K
Solution, Solubility, and Solubility Equilibrium
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
A solution is a homogeneous mixture composed of a solvent, the major component, and a solute, the minor component. The physical state of a solution—solid, liquid, or gas—is typically the same as that of the solvent. Solute concentrations are often described with qualitative terms such as dilute (of relatively low concentration) and concentrated (of relatively high concentration).
In a solution, the solute particles (molecules,...
17.5K
Solvating Effects
7.5K
An understanding of the solvating effect helps rationalize the relation between solvation and acidity of the compound. In addition, this also explains the relative stability of conjugate bases for compounds with different pKa values. This lesson details, in-depth, the principle of solvating effects. The strength of an acid and the stability of its corresponding conjugate base are determined using pKa values. This observed relationship is a consequence of solvation, which is the interaction...
7.5K

