Preparation of polymer/clay nanocomposites via melt intercalation under continuous elongation flow

G Zhang, T Wu, W Lin, Y Tan, R Chen, Z Huang… - … Science and Technology, 2017 - Elsevier
Polymer/clay nanocomposites exhibit desirable performance and multifunctional properties.
The ideal dispersion and exfoliation of clay layers in polymeric matrixes is a significant …

Improving the efficiency of curved wells' operation by means of progressive cavity pumps

AA Isaev, MMO Aliev, AN Drozdov, YA Gorbyleva… - Energies, 2022 - mdpi.com
This paper proposes a solution to the problem of improving the reliability of the operation of
progressive cavity pump units in deviated and directional wells. High dogleg severity …

Numerical modeling on friction and wear behaviors of all-metal progressive cavity pump

G Cao, JN Zhang, Y Guo, C Liu, M Micheal… - Journal of Petroleum …, 2022 - Elsevier
The wear of the all-metal progressive cavity pump (AMPCP) has become one of the main
concerns from various field applications of oil production. This work systematically reveals …

Analytical model for the flow in progressing cavity pump with the metallic stator and rotor in clearance fit

L Zheng, X Wu, G Han, H Li, Y Zuo… - … Problems in Engineering, 2018 - Wiley Online Library
As the metallic stator progressing cavity pump (PCP) operates with the stator and rotor in
clearance fit, the slippage between cavities has a significant influence on the pump …

Modeling the performance of progressive cavity pump under downhole conditions

K Nguyen, TC Nguyen, E Al-Safran - Journal of Petroleum Science and …, 2021 - Elsevier
Abstract Progressive Cavity Pump (PCP) is a common artificial lift method for high viscosity
liquid production. In elastomeric stator PCP, the clearance between the metal rotor and …

Modeling pressure pulsation and backflow in progressing cavity pumps with deformable stator

J Müller, Y Kouhi, S Leonow, M Mönnigmann - Journal of Petroleum …, 2021 - Elsevier
This contribution studies the impact of the rotor-stator interaction in a single-stage
progressing cavity pump on the flow rate and pressure. Specifically, we investigate the effect …

Viscous flow simulations through multi-lobe progressive cavity pumps

FM El-Abd, EM Wahba, IG Adam - Petroleum Science, 2020 - Springer
Computational fluid dynamics (CFD) simulations of multi-lobe progressive cavity (PC)
pumps are limited in the literature due to the geometric complexity of the pump, which places …

Theoretical modeling of positive displacement motors performance

TC Nguyen, E Al-Safran, V Nguyen - Journal of Petroleum Science and …, 2018 - Elsevier
Abstract Positive Displacement Motor (PDM) has been used extensively in directional and
horizontal drilling operations. To the best of our knowledge, there is no reliable analytical …

Analysis of output performance of all-metal progressive cavity motor

J Lu, Y Wang, L Kong, J Li - Geoenergy Science and Engineering, 2023 - Elsevier
At present, the traditional progressive cavity motor is usually a rubber stator and metal rotor,
and an interference fit is set. When it encounters the high-temperature formation of 180° C …

Analysis and prediction of fluid flow behavior in progressing cavity pumps

E Al-Safran, A Aql, T Nguyen - Journal of Fluids …, 2017 - asmedigitalcollection.asme.org
A progressing cavity pump (PCP) is a positive displacement pump with an eccentric screw
movement, which is used as an artificial lift method in oil wells. Downhole PCP systems …