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A New Model for Predicting Dynamic Surge Pressure in Gas and Drilling Mud Two-Phase Flow during Tripping Operations
Joint Authors
Qiu, Yijie
Chen, Yanchao
Zhu, Hongjun
Kong, Xiangwei
Dong, Long
Lin, Yuanhua
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-16, 16 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-01-08
Country of Publication
Egypt
No. of Pages
16
Main Subjects
Abstract EN
Investigation of surge pressure is of great significance to the circulation loss problem caused by unsteady operations in management pressure drilling (MPD) operations.
With full consideration of the important factors such as wave velocity, gas influx rate, pressure, temperature, and well depth, a new surge pressure model has been proposed based on the mass conservation equations and the momentum conservation equations during MPD operations.
The finite-difference method, the Newton-Raphson iterative method, and the fourth-order explicit Runge-Kutta method (R-K4) are adopted to solve the model.
Calculation results indicate that the surge pressure has different values with respect to different drill pipe tripping speeds and well parameters.
In general, the surge pressure tends to increase with the increases of drill pipe operating speed and with the decrease of gas influx rate and wellbore diameter.
When the gas influx occurs, the surge pressure is weakened obviously.
The surge pressure can cause a significant lag time if the gas influx occurs at bottomhole, and it is mainly affected by pressure wave velocity.
The maximum surge pressure may occur before drill pipe reaches bottomhole, and the surge pressure is mainly affected by drill pipe operating speed and gas influx rate.
American Psychological Association (APA)
Kong, Xiangwei& Lin, Yuanhua& Qiu, Yijie& Zhu, Hongjun& Dong, Long& Chen, Yanchao. 2014. A New Model for Predicting Dynamic Surge Pressure in Gas and Drilling Mud Two-Phase Flow during Tripping Operations. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-16.
https://search.emarefa.net/detail/BIM-507889
Modern Language Association (MLA)
Kong, Xiangwei…[et al.]. A New Model for Predicting Dynamic Surge Pressure in Gas and Drilling Mud Two-Phase Flow during Tripping Operations. Mathematical Problems in Engineering No. 2014 (2014), pp.1-16.
https://search.emarefa.net/detail/BIM-507889
American Medical Association (AMA)
Kong, Xiangwei& Lin, Yuanhua& Qiu, Yijie& Zhu, Hongjun& Dong, Long& Chen, Yanchao. A New Model for Predicting Dynamic Surge Pressure in Gas and Drilling Mud Two-Phase Flow during Tripping Operations. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-16.
https://search.emarefa.net/detail/BIM-507889
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-507889