阻垢剂对硫酸钡结晶动力学参数影响研究

doi:10.11885/j.issn.1674-5086.2022.01.05.03

西南石油大学学报(自然科学版) ›› 2022, Vol. 44 ›› Issue (5): 175-184.DOI: 10.11885/j.issn.1674-5086.2022.01.05.03

• 石油机械与油田化学 • 上一篇

阻垢剂对硫酸钡结晶动力学参数影响研究

李海涛¹, 李然¹, 刘涛², 郑超³, 刘文举¹

1. 西南石油大学石油与天然气工程学院, 四川成都 610500;
2. 中国石油新疆油田分公司工程技术研究院, 新疆克拉玛依 834000;
3. 中国石油玉门油田分公司老君庙采油厂, 甘肃酒泉 735000

收稿日期:2022-01-05 发布日期:2022-10-28
通讯作者: 李然,E-mail:316920020@qq.com
作者简介:李海涛，1965年生，男，汉族，四川广安人，教授，博士，主要从事油气开采方向的科研工作。E-mail：lihaitao@swpu.edu.cn;
李然，1991年生，男，汉族，河南杞县人，博士研究生，主要从事油田注水过程中防垢机理与防垢技术方面的研究。E-mail：316920020@qq.com;
刘涛，1987年生，男，汉族，四川岳池人，工程师，主要从事采油采气工程方面的生产与研究工作。E-mail：fcliut@petrochina.com.cn;
郑超，1987年生，男，汉族，四川南充人，工程师，主要从事油气田开发注水采油工艺方向的研究。E-mail：18579712@qq.com;
刘文举，1996年生，男，汉族，甘肃陇南人，硕士研究生，主要从事油田注水过程中防垢技术研究。E-mail：2295509865@qq.com

The Study of Effect of Inhibitors on BaSO₄ Crystallization Kinetic Parameters

LI Haitao¹, LI Ran¹, LIU Tao², ZHENG Chao³, LIU Wenju¹

1. Petroleum Engineering School, Southwest Petroleum University, Chengdu, Sichuan 610500, China;
2. Engineering and Technology Research Institute, Karamay Oilfield, CNPC, Karamay, Xinjiang 834000, China;
3. Laojunmiao Oil Production Plant, Yumen Oilfield, CNPC, Jiuquan, Gansu 735000, China

Received:2022-01-05 Published:2022-10-28

摘要/Abstract

摘要： 以BaSO₄结晶过程为研究对象，基于经典的均相成核理论，采用电导率法研究了添加0.02 mmol/L的阻垢剂DTPA--5Na(二乙烯三胺五乙酸钠)、EDTMPS(乙二胺四亚甲基磷酸)及DTPMP(二乙烯三胺五亚甲基磷酸)前后BaSO₄结晶诱导期、BaSO₄晶体析出时的生成吉布斯自由能及活化能的变化，并通过扫描电镜与X-射线衍射分析了阻垢剂对BaSO₄微观形貌和特征衍射峰的影响。实验结果表明，在实验温度为298~318 K、Ba²⁺与SO₄^2-浓度为0.5~1.2 mmol/L条件下，加入阻垢剂后，BaSO₄的结晶诱导期延长，BaSO₄晶体的活化能增大，同时BaSO₄晶体的生成吉布斯自由能分别提高了10.52、8.06和6.18 mJ/m²。此外，扫描电镜分析与X-射线衍射分析结果表明，3种阻垢剂显著地改变了BaSO₄晶体形貌，使得BaSO₄晶粒更小和分散，并使BaSO₄晶体某些晶面的特征峰衍射强度降低。3种阻垢剂不同程度地抑制了BaSO₄晶体生长。

关键词: 硫酸钡结晶, 诱导期, 吉布斯自由能, 阻垢剂, 晶体形貌与衍射强度

Abstract: Taking the process of barium sulfate crystal as the research object, induction period, Gibbs free energy and activation energy of barium sulfate solution with and without odium diethylene triamine pentacetate (DTPA-5Na), ethylene diamine tetra methylene phosphonate (EDTMPS) and diethylene triamine penta (DTPMP) were analyzed based on the homogeneous theory. The impact of inhibitor on the morphology and characteristic peak also were studied by SEM and XRD respectively. It was found that the induction period and activation energy increased, Gibbs free energy of barium sulfate also increased by 10.52, 8.06, 6.18 mJ/m² respectively at the temperature from 298 K to 318 K and concentration of Ba²⁺ and SO₄^2- from 0.5～1.2 mmol/L. Meanwhile, morphology of BaSO₄ crystals were changed significantly and crystalline grain was smaller and more dispersed. Characteristic peak of some surface of BaSO₄ became weaker. DTPA–5Na, EDTMPS and DTPMP prevented barium sulfate from growing at different levels.

Key words: barium sulfate crystal, induction period, Gibbs free energy, inhibitors, crystal morphology and diffracted intensity

中图分类号:

TE39

李海涛, 李然, 刘涛, 郑超, 刘文举. 阻垢剂对硫酸钡结晶动力学参数影响研究[J]. 西南石油大学学报(自然科学版), 2022, 44(5): 175-184.

LI Haitao, LI Ran, LIU Tao, ZHENG Chao, LIU Wenju. The Study of Effect of Inhibitors on BaSO₄ Crystallization Kinetic Parameters[J]. Journal of Southwest Petroleum University(Science & Technology Edition), 2022, 44(5): 175-184.

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阻垢剂对硫酸钡结晶动力学参数影响研究

The Study of Effect of Inhibitors on BaSO₄ Crystallization Kinetic Parameters

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The Study of Effect of Inhibitors on BaSO₄ Crystallization Kinetic Parameters