井下抽油泵吸入口附近腐蚀模拟试验装置研制

高斐; 楼一珊; 吴琼; 唐礼骅; 闵江本; 李贻浩; 姜美婷

doi:10.3981/j.issn.1000-7857.2013.36.007

科技导报 >

2013 , Vol. 31 >Issue 36: 46 - 49

DOI: https://doi.org/10.3981/j.issn.1000-7857.2013.36.007

研究论文

井下抽油泵吸入口附近腐蚀模拟试验装置研制

高斐 ,
楼一珊 ,
吴琼 ,
唐礼骅 ,
闵江本 ,
李贻浩 ,
姜美婷

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1. 长江大学油气资源与勘探技术教育部重点实验室; 长江大学石油工程学院, 武汉 434023;
2. 中石化河南油田分公司勘探开发研究院, 河南南阳 473132;
3. 中石化江苏油田分公司石油工程技术研究院, 江苏扬州 225008

高斐，博士研究生，研究方向为岩石力学与钻井工程，电子信箱：fgat163@163.com

收稿日期: 2013-07-09

修回日期: 2013-08-23

网络出版日期: 2014-01-15

基金资助

国家自然科学基金项目（51274047）

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Development of Dynamic Simulation Test Device for the Corrosion Near Downhole Pump Suction Port

GAO Fei ,
LOU Yishan ,
WU Qiong ,
TANG Lihua ,
MIN Jiangben ,
LI Yihao ,
JIANG Meiting

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1. Key Laboratory of Exploration Technologies for Oil and Gas Resources, MOE, Yangtze University; Department of Petroleum Engineering, Yangtze University, Wuhan 434023, China;
2. Research Institute of Exploration and Development, Henan Oilfield Company, Sinopec，Nanyang 473132, Henan Province, China;
3. Engineering and Technology Institute, Jiangsu Oilfield Company，Sinopec，Yangzhou 225008，Jiangsu Province，China

Received date: 2013-07-09

Revised date: 2013-08-23

Online published: 2014-01-15

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摘要

油田井下抽油泵吸入口附近套管腐蚀穿孔现象比较普遍，严重影响油田的稳产。为研究其腐蚀机制，自行设计和制造了一种井下抽油泵吸入口附近动态腐蚀模拟试验装置。该装置采用单柱塞泵和与现场一致的油套管柱结构，真实模拟了抽油泵间歇性的生产方式以及泵吸入口附近流体的流动状态，实现了不同温度、CO₂分压、流速等条件下腐蚀速率的测定及腐蚀行为的研究，可为套管选材提供参考。试验结果表明，抽油泵吸入口附近腐蚀介质的流速流态是造成该处套漏的主控因素，并以CO₂局部腐蚀为主，与现场套损状况一致。

关键词： 腐蚀; 抽油泵吸入口; 腐蚀速率

本文引用格式

高斐 , 楼一珊 , 吴琼 , 唐礼骅 , 闵江本 , 李贻浩 , 姜美婷 . 井下抽油泵吸入口附近腐蚀模拟试验装置研制[J]. 科技导报, 2013 , 31(36) : 46 -49 . DOI: 10.3981/j.issn.1000-7857.2013.36.007

Abstract

The corrosion of the casing near a downhole pump suction port is common in some domestic oilfields, and it has a serious impact on the stable production of the oilfield. In order to study the corrosion mechanism, we have designed and manufactured a dynamic simulation test device for the corrosion of the casing near the downhole pump suction port. The device consists of a single plunger pump and a tube and casing strings in line with the site structure to simulate the intermittent production mode of the pump as well as the fluid flow state near the pump inlet adequately, and the corrosion velocity measurement can be made and the corrosion behavior can be studied under different temperatures, CO₂ partial pressures, and velocities to provide important data for the casing materials. The test results show that the flow rate and flow pattern of the corrosive medium near the oil pump suction port are the main factors of casing-leakage, and CO₂ local corrosion is the main way, which is in accordance with the casing damage status.

Key words： corrosion; pump suction port; corrosion rate

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