THERMAL SCIENCE

International Scientific Journal

Jiasheng Fu

,

Wei Liu

,

Xiaosong Han

,

Qing Zhao

,

Weiwei Hao

,

Ning Li

PREVENTION AND CONTROL OF VACUUM INTERVAL BY MANAGED PRESSURE INJECTION IN CEMENTING

ABSTRACT
This article uses on-site drilling data and establishes a hydraulic model for pres­sure-controlled cementing to simulate and analyze the generation process of the vacuum interval in the wellbore, as well as the changes in the volume and height of the vacuum interval, bottom hole pressure, and point of interest pressure over time. This model can optimize and recommend key parameters such as target wellhead back pressure and displacement based on the pressure window and drilling param­eters, with the target pressure of the focus point as the anchor point. Through the hydraulic model of controlled pressure cementing, the hydraulic parameters and processes of managed pressure cementing can be optimized and recommended, effectively ensuring the safety of the cementing process.
KEYWORDS
managed pressure cementing, wellhead back pressure, vacuum interval, U-tube effect, hydraulic model
PAPER SUBMITTED: 2024-03-02
PAPER REVISED: 2024-03-25
PAPER ACCEPTED: 2024-05-15
PUBLISHED ONLINE: 2024-09-28
DOI REFERENCE: https://doi.org/10.2298/TSCI2404397F
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2024, VOLUME 28, ISSUE Issue 4, PAGES [3397 - 3402]
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Prevention and control of vacuum interval by managed pressure injection in cementing

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence