Investigation on Hydrate Formation and Growth Characteristics in Dissolved Asphaltene-Containing Water-In-Oil Emulsion,Langmuir

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Investigation on Hydrate Formation and Growth Characteristics in Dissolved Asphaltene-Containing Water-In-Oil Emulsion
Langmuir ( IF 3.7 ) Pub Date : 2021-09-13 , DOI: 10.1021/acs.langmuir.1c01698
Yuanxing Ning _{1,

2} , Yuxing Li _{1,

2} , Guangchun Song _{1,

2} , Wuchang Wang _{1,

2} , Xiang Liu _{1,

2} , Zhiming Liu _{1,

2} , Jialu Zhang _{1,

2}

Affiliation

Clarifying the effect of asphaltene on hydrate formation and growth is of great significance to the operation safety in deepwater petroleum fields. To investigate the influence of low-concentration dissolved asphaltenes on the formation kinetics and growth process of hydrates in water-in-oil emulsions, experiments with asphaltene concentrations ranging from 50 to 1000 ppm were carried out using a high-pressure visual reactor. At a low concentration, the adsorption of asphaltene monomers on the oil–water interface or nanoaggregates in the bulk barely affected the nucleation of hydrate and the induction time of hydrate formation. However, it would hinder the microscopic mass transfer process and heat transfer process between gas molecules and then mitigate the initial rate of hydrate formation. Therefore, the dissolved asphaltenes could not be used as antiagglomerants (AAs) to efficiently inhibit the aggregation of hydrate particles at low concentrations under our experimental conditions, causing extensive hydrate agglomeration and deposition in the reactor.

中文翻译：

溶解性含沥青油油包水乳液水合物形成及生长特性研究

阐明沥青质对水合物形成和生长的影响对深水油田作业安全具有重要意义。为了研究低浓度溶解沥青质对油包水乳液中水合物形成动力学和生长过程的影响，使用高压可视反应器进行了沥青质浓度范围为 50 至 1000 ppm 的实验。在低浓度下，沥青质单体在油水界面或纳米团聚体上的吸附几乎不影响水合物的成核和水合物形成的诱导时间。然而，它会阻碍气体分子之间的微观传质过程和传热过程，从而降低水合物形成的初始速率。所以，

更新日期：2021-09-21

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