深水“一体化”保温测试液体系研究与性能评价

李中; 吴志明; 向兴金; 颜帮川; 余意; 刘智勤

doi:10.3969/j.issn.1001-5620.2019.04.022

深水“一体化”保温测试液体系研究与性能评价

doi: 10.3969/j.issn.1001-5620.2019.04.022

李中¹,
吴志明¹,
向兴金^2,3, ,,
颜帮川¹,
余意¹,
刘智勤¹

1. 中海石油(中国) 有限公司湛江分公司, 广东湛江 524057;
2. 长江大学石油工程学院, 湖北武汉 430100;
3. 湖北省油田化学产业技术研究院, 湖北荆州 434000

基金项目:

国家“十三五”重大科技专项子课题“深水油气田开发钻完井工程关键技术研究及配套工艺”部分研究成果（2016ZX05028-001-009）

详细信息

作者简介:
李中,高级工程师,1972年生,1994年毕业于原江汉石油学院钻井工程专业,现在从事海洋油气勘探开发钻完井技术研究和工程管理工作。

通讯作者:
向兴金,E-mail:hancxiang@163.com

中图分类号: TE258
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出版历程
- 收稿日期: 2019-02-05
- 刊出日期: 2019-08-30

Study and Performance Evaluation of an “Integrated” Insulation Test Fluid Using in Deep-water Well Test

1. CNOOC Zhanjiang Branch Company, Zhanjiang, Guangdong 524057;
2. School of Petroleum Engineering, Yangtzeu University, Wuhan, Hubei 434023;
3. Research Institute of Oilfield Chemistry Industrial Technology of Hubei Province, Jingzhou, Hubei 434000

摘要

摘要: 针对国内深水单层隔水管柱测试作业具有隔热性差、上部隔水管环空与下部油套环空连通会影响测试性和传压性等特点，研制了由合成多元醇与还原糖醇复配而成的低导热系数非水基液"一体化"保温测试液。并对该保温测试液进行了导热性、密度可调性、可泵性、流变性等性能的评价，实验结果表明，该测试液抗温可达150℃，导热系数为0.2428~0.2866 W/（m·K）），密度能在1.05~1.50 g/cm³或者1.50~1.05 g/cm³间由低到高或由高到低调节，150℃静止15 d的沉降降因子为0.50，25℃下表观黏度不大于70 mPa·s，4℃下静切力不大于3 Pa，具有较好的传压性，150℃下的3 d平均腐蚀速率为0.0369~0.0690 mm/a，岩心渗透率恢复值达95%以上；另外该保温测试液不仅环境友好，含油量为零，能满足GB 18420.1-2009《海洋石油勘探开发污染物生物毒性第1部分：分级》标准中一级海域使用要求，而且还可回收再利用，可大大节约测试成本。可以用于深水单层隔水管测试作业。
- 深水 /
- 一体化 /
- 保温测试液 /
- 研究 /
- 评价
Abstract: An "integrated" insulation test fluid has been formulated with a synthesized polyol and a reducing sugar alcohol to address problems encountered in testing deep-water wells with single-layered riser, such as poor heat insulation, connection of the annulus of the upper riser and the annulus of the lower production string, which affects well testing and pressure transmission, etc. The "integrated" insulation test fluid is a non-aqueous fluid with low heat conductivity. Laboratory evaluation on the heat conductance, density adjustability, pumpability and rheology of the test fluid shows that this test fluid has the following properties:temperature resistance of up to 150℃, heat conductivity of 0.2428-0.2866 W/(m·K), density adjustable between 1.05 g/cm³ and 1.50 g/cm³, settlement factor of 0.50 after standing still for 15 d, apparent viscosity at 25℃ of 70 mPa·s at most, gel strength at 4℃ of 3 Pa at most, good pressure transmission, average corrosion rate in 3 d at 150℃ of 0.0369-0.0690 mm/a, and percent core permeability recovery of at least 95%. Furthermore, this test fluid is environmentally friendly, and has no oil in it. It satisfies the Class 1 requirements of offshore application in accordance with the standard "Biological toxicity for pollutants from marine petroleum exploration and exploitation -Part 1:Grading". This test fluid can be recovered for reuse, greatly reducing operational cost. It can be used in testing deep water wells with single-layered riser.
- Deep water /
- Integrated /
- Insulation test fluid /
- Study /
- Evaluation

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参考文献(9)

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