海上气井测试液控温性能调整方法

任冠龙; 张崇; 董钊; 余意; 曾春珉

doi:10.3969/j.issn.1001-5620.2016.04.025

海上气井测试液控温性能调整方法

doi: 10.3969/j.issn.1001-5620.2016.04.025

中海石油(中国)有限公司湛江分公司, 广东湛江 524057

详细信息

作者简介:
任冠龙,1988年生,硕士,现在主要从事储层保护、钻完井工艺方面的研究工作.电话18688372662;E-mail:rengl4@cnooc.com.cn.

中图分类号: TE257
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出版历程
- 收稿日期: 2016-02-25
- 刊出日期: 2016-07-31

Temperature Control Capability of Test Fluid Used in Offshore Operations

Zhanjiang Branch Company, CNOOC, Zhanjiang, Guangdong 524057

摘要

摘要: 深水和高温、高压是目前南海西部勘探开发面临的2大挑战，测试作业更是面临海底低温、井口高温的难题，且保温测试液体系研究在中国尚属空白。通过建立气井测试系统预测传热模型，对影响深水和高温、高压气井测试井筒温度场的测试液控温性能因素进行了敏感性分析，建立了测试液控温性能调整方法。模型验证预测最大温度误差仅为3.4℃，并以此理论为基础，构建了一套控温性能可调、井口温度可控的测试液技术，其切应力大于4Pa。该技术在南海西部某深水气井测试应用中获得了成功。现场测试期间该井实测井口温度为16.5℃，计算预测该井井口温度为18℃，且井筒不同位置实测温度与预测井筒温度场十分接近，最终该井测试安全顺利，气产量达100×104m³/d。
- 深水 /
- 高温高压 /
- 测试液 /
- 温度场 /
- 海底低温
Abstract: Deep water and HTHP have been two challenges encountered in the exploration and development operations in the west of South China Sea, and low temperature at the seabed and high temperature at the wellhead are difficulties that must be dealt with in offshore well testing. Study on the heat retaining test fluids has not been found presently in China. Through the construction of the heat transfer prediction model used in gas well testing, sensitivity analyses were performed to those factors of the test fluids affecting the temperature field in the borehole of deep water and HTHP gas wells, and a method of adjusting the temperature control capability of a test fluid was established. The maximum temperature prediction error of the model is only 3.4℃. Using this model and the method, a test fluid with adjustable temperature control capability and controllable wellhead temperature was developed. The test fluid has shear stress greater than 4 Pa, and has been successfully applied in an offshore deep gas well in the west of South China Sea. The measured wellhead temperature during well testing is 16.5℃, while the calculated wellhead temperature is 18℃, and the temperatures measured at the different places in the wellbore are very close to those calculated. Test of the well has been successful, giving gas production rate of 100×104 m³/d.
- Deep water /
- High temperature high pressure /
- Test fluid /
- Temperature field /
- Low temperature at seabed

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参考文献(10)

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