离散滑脱滞后时间法深井气窜速度计算

doi:10.11885/j.issn.1674-5086.2015.06.24.01

西南石油大学学报(自然科学版) ›› 2017, Vol. 39 ›› Issue (2): 139-144.DOI: 10.11885/j.issn.1674-5086.2015.06.24.01

离散滑脱滞后时间法深井气窜速度计算

黄志强^1,2, 欧彪³, 孔祥伟², 王星宇⁴, 林元华⁵

1. 中国地质大学(武汉)工程学院, 湖北武汉 430000;
2. 长江大学石油工程学院, 湖北武汉 430000;
3. 中国石化西南油气分公司工程技术研究院, 四川德阳 618000;
4. 中国石油西南油气田公司, 四川成都 610000;
5. "油气藏地质及开发工程"国家重点实验室西南石油大学, 四川成都 610500

收稿日期:2015-06-24 出版日期:2017-04-01 发布日期:2017-04-01
作者简介:黄志强,1964年生,男,汉族,河南民权人,教授,博士,主要从事钻井工程、油气井工程领域的教学与科研工作。E-mail:huangzq1356@163.com;欧彪,1976年生,男,汉族,四川广元人,高级工程师,主要从事钻井工程、钻井液等方面研究。Email:mq-ou@163.com;孔祥伟,1982年生,男,汉族,黑龙江大庆人,博士后,主要从事超深井风险事故预控、井筒多相复杂流动及数字井控等方面研究。E-mail:76922591@qq.com;王星宇,1989年生,男,汉族,四川成都人,助理工程师,硕士,主要从事油气集输,管道多相流体运移规律等方面研究。E-mail:153898169@qq.com;林元华,1971年生,男,汉族,四川南溪人,教授,博士生导师,主要从事控压钻井及油气井管柱力学方面的研究。E-mail:yhlin28@163.com
基金资助:
国家自然科学基金（51274170）；中国博士后科学基金第57批面上项目（2015M572495）；长江大学青年基金（2015cqn70）

Application of Slip Lag Time in Discrete to the Calculation of Gas upward Velocity in Deep Well

HUANG Zhiqiang^1,2, OU Biao³, KONG Xiangwei², WANG Xingyu⁴, LIN Yuanhua⁵

1. School of Engineering and Technology, Chinese Universitity of Geology(Wuhan), Wuhan, Hubei 430000, China;
2. School of Petroleum Engineering, Yangtze University, Wuhan, Hubei 430000, China;
3. Engineering and Technology Research Institute Company Southwest Oil and Gas Field, SINOPEC, Deyang, Sichuan 618000, China;
4. Southwest Oil and Gas Field Company, PetroChina, Chengdu, Sichuan 610000, China;
5. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation, Southwest Petroleum University, Chengdu, Sichuan 610500, China

Received:2015-06-24 Online:2017-04-01 Published:2017-04-01
Contact: 孔祥伟,E-mail:76922591@qq.com

摘要/Abstract

摘要： 考虑气体滑脱对气窜速度的影响，从停泵/启泵两阶段中气体的流动特性入手，提出了离散滑脱滞后时间法气体上窜速度计算模型。在多相流气体滑脱速度计算中，提出了时间滑移网格的算法。以四川元坝某井为具体工程实例进行了计算，经现场验证，该模型可满足作业需求。结果表明，采用离散滑脱滞后时间法计算深井气窜速度是可行的；深井段气体处于超临界状态，超临界态气体滑脱现象不严重，对气窜速度影响不大，临近井口段气体滑脱较大；不考虑气体滑脱与考虑气体滑脱相比，气窜速度误差高达76.36%；随停泵时间延长、监测气体显示时间延长、油气层顶界位置上移，迟到时间减小，气窜速度均呈现减小趋势。

关键词: 气体滑脱, 两相流动, 气窜速度, 滑脱滞后时间法, 迟到时间

Abstract: Considering the gas slipping velocity, the flow characteristics at the stopping and starting pumps are studied, and the method of slipping lag time in discrete is proposed for calculating the speed of gas slip in deep wells. The time sliding mesh algorithm is proposed in a multiphase flow, which is used to solve for the gas slipping velocity, and the data are calculated using a cubic spline function. Corresponding calculations are performed, and a control software is designed. We applied this mathematical model to a well in Yuanba Sichuan, and obtained results that met operational requirements. The gas remains in a supercritical state in the deep well, and the gas slippage is not serious and has little effect on the gas upward velocity. When the state of the gas changes from a supercritical state into a gas near the wellhead, substantial gas slippage occurs. If the gas slippage is not considered, the error rate is up to 76.36%. It was observed that with an increase in the pump stopping time and gas monitoring time, as well as a decrease in lag time, and that of the reservoir top boundary, upward velocities of the gas tend to decrease.

Key words: gas slipping, two-phase flow, gas slipping velocity, method of slip lag time, lag time

中图分类号:

TE357

黄志强, 欧彪, 孔祥伟, 王星宇, 林元华. 离散滑脱滞后时间法深井气窜速度计算[J]. 西南石油大学学报(自然科学版), 2017, 39(2): 139-144.

HUANG Zhiqiang, OU Biao, KONG Xiangwei, WANG Xingyu, LIN Yuanhua. Application of Slip Lag Time in Discrete to the Calculation of Gas upward Velocity in Deep Well[J]. 西南石油大学学报(自然科学版), 2017, 39(2): 139-144.

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离散滑脱滞后时间法深井气窜速度计算

Application of Slip Lag Time in Discrete to the Calculation of Gas upward Velocity in Deep Well

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