Venturi Optimization and Local Pressure Method for Measuring Supercritical CO 2 Flow in Downhole

Chunfeng Zheng, Wanyou Yang, Dedong Xue, Lei Kou, Sheng Wang, Zhengyang Chen, Shijiao Jia () and Chao Yuan ()
Additional contact information
Chunfeng Zheng: Engineering Company, Energy Development Limited Company of CNOOC, Tianjin 300450, China
Wanyou Yang: Engineering Company, Energy Development Limited Company of CNOOC, Tianjin 300450, China
Dedong Xue: Engineering Company, Energy Development Limited Company of CNOOC, Tianjin 300450, China
Lei Kou: Engineering Company, Energy Development Limited Company of CNOOC, Tianjin 300450, China
Sheng Wang: Engineering Company, Energy Development Limited Company of CNOOC, Tianjin 300450, China
Zhengyang Chen: Tianjin Key Laboratory of Process Measurement and Control, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Shijiao Jia: Tianjin Key Laboratory of Process Measurement and Control, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China
Chao Yuan: Tianjin Key Laboratory of Process Measurement and Control, School of Electrical and Information Engineering, Tianjin University, Tianjin 300072, China

Energies, 2025, vol. 18, issue 8, 1-17

Abstract: This study is dedicated to exploring and verifying the application of a miniature Venturi sensor for measuring the flowrate of supercritical CO 2 and associated gas in downhole environments. With the rapid development of CO 2 gas injection technology and Carbon Capture, Utilization, and Storage (CCUS) technology, the demand for accurate measurements of a CO 2 and CH 4 mixed-medium flowrate is increasing. This paper combines theoretical analysis, simulation design, and experimental validation to determine the optimized structure of a miniature Venturi and to select appropriate pressure sensors, comparing the accuracy of the Local Pressure Method (LPM) and Differential Pressure Method (DPM) in measuring differential pressure. The experiments were conducted using the water flow calibration facility and the gas–liquid two-phase flow rig at Tianjin University, comparing the LPM based on Keller pressure sensors with the DPM based on EJA110A transmitters. The results indicate that the relative error range of the differential pressure measurement is −16.64% to −0.72%, and the absolute error range is −5.19 kPa to −0.24 kPa, meeting the measurement requirements for underground applications. This validates the rational design of the miniature Venturi sensor and the feasibility of using the LPM in downhole.

Keywords: CCUS; flowrate; miniature Venturi; LedaFlow; Local Pressure Method (LPM) (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2025
References: Add references at CitEc
Citations:

Downloads: (external link)
https://www.mdpi.com/1996-1073/18/8/1951/pdf (application/pdf)
https://www.mdpi.com/1996-1073/18/8/1951/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:18:y:2025:i:8:p:1951-:d:1632412

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().