[1]于伟强,劳文韬,李纪智,等.基于TMD工具箱海上油气井试井解释潮汐效应消除方法[J].油气井测试,2022,31(01):62-68.[doi:10.19680/j.cnki.1004-4388.2022.1.011]
　YU Weiqiang,LAO Wentao,LI Jizhi,et al. Tidal effect elimination method in well testing interpretation of offshore oil and gas wells based on TMD toolbox[J].Well Testing,2022,31(01):62-68.[doi:10.19680/j.cnki.1004-4388.2022.1.011]
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基于TMD工具箱海上油气井试井解释潮汐效应消除方法()
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《油气井测试》[ISSN:1006-6977/CN:61-1281/TN]

卷:
31
期数:
2022年01期
页码:
62-68
栏目:
出版日期:
2022-02-25

文章信息/Info

Title:
 Tidal effect elimination method in well testing interpretation of offshore oil and gas wells based on TMD toolbox
文章编号:
1004-4388(2022)01-0062-07
作者:
于伟强1; 劳文韬2; 李纪智3; 赵洪绪1; 杨毅1; 刘均荣2
1.中法渤海地质服务有限公司 天津 300457
2.中国石油大学（华东）石油工程学院 山东青岛 266580
3.中海石油（中国）有限公司深圳分公司 广州深圳 518000
Author(s):
 YU Weiqiang1;  LAO Wentao2;  LI Jizhi3;  ZHAO Hongxu1;  YANG Yi1;  LIU Junrong2
 1.ChinaFrance Bohai Geoservices Co., Ltd., Tianjin 300457, China
2.School of Petroleum Engineering, China University of Petroleum (East China), Qingdao, Shandong 266580, China
3.Shenzhen Branch, CNOOC (China) Co., Ltd., Shenzhen, Guangzhou 518000, China
关键词:
 ; 潮汐效应; 不稳定试井; 试井解释; TMD工具箱; 压力导数; 最优化模型
Keywords:
tidal effect;  unstable well test;  well testing interpretation;  TMD toolbox;  pressure derivative;  optimization model
分类号:
TE353
DOI:
10.19680/j.cnki.1004-4388.2022.1.011
文献标志码:
B
摘要:
 海上油气井压力测试过程中，潮汐效应产生的干扰压力会造成井底压力出现周期性波动，影响流态识别和储层物性参数解释的准确性。利用Tidal Modal Driver 工具箱，实时预测海平面高度，基于压力恢复过程中的双对数函数，建立非线性最优化模型，采用LevenbergMarquardt算法求解潮汐影响系数和相位差，消除井底压力测试数据中的潮汐效应影响。结果表明，原始数据经过TMD工具箱过滤潮汐效应后，压力曲线后期较平滑，压力导数曲线后期波动明显减少，地层渗流特征和边界特征比较明显，更加真实地反映了地层特征，矫正效果良好。该方法不需要测试海底压力数据作为参考信号，仅过滤掉潮汐信号，保留完整油藏信号，为矫正含有潮汐效应的井底压力测试数据提供了有效手段。
Abstract:
During the pressure test of offshore oil and gas wells, the interference pressure caused by tidal effect will cause periodic fluctuation of bottomhole pressure, which will affect the accuracy of flow pattern identification and reservoir physical parameter interpretation. In this paper, the tidal modal driver toolbox is used to predict the sea level height in real time. Based on the double logarithmic function in the pressure buildup process, a nonlinear optimization model is established. The LevenbergMarquardt algorithm is used to calculate the tidal influence coefficient and phase difference, so as to eliminate the tidal effect in the bottomhole pressure test data. The results show that after filtered by TMD toolbox, the pressure curve of the original data is smoother in the later stage, and the fluctuation of pressure derivative curve is significantly reduced obviously in the later stage, which can accurately identify the characteristics of radial flow stage and later stage. This method does not need to test the seabed pressure as the reference signal, it only filters out the tidal signal and then retains the complete reservoir signal, which provides an effective means to correct the bottomhole pressure test data containing tidal effect.

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备注/Memo

备注/Memo:
 2021-10-03收稿，2021-12-09修回,2022-01-09接受,2022-02-20网络版发表
中法渤海地质服务有限公司科研项目“潮汐效应对海上油气井试井解释影响及矫正方法研究”（CFB-TG-TI-2020-004）
于伟强，男，1987 年出生，硕士，工程师，2014年毕业于中国石油大学（华东）油气田开发工程专业，现主要从事井下压力测试数据解释和研究工作。电话：022-65310731；Email：yuwq@cfbgc.com。通信地址：天津经济技术开发区信环西路19号天河科技园1号楼3层中法渤海地质服务有限公司，邮政编码：300457。
更新日期/Last Update: 2022-04-19