Intermolecular and surface forces at solid/oil/water/gas interfaces in petroleum production

2019 ◽  
Vol 537 ◽  
pp. 505-519 ◽  
Author(s):  
Ling Zhang ◽  
Lei Xie ◽  
Xinwei Cui ◽  
Jingsi Chen ◽  
Hongbo Zeng
Keyword(s):  
Surface Forces ◽  
Petroleum Production ◽  
Oil Water ◽  
Water Gas

scholarly journals Study of viscous oil-water-gas slug flow in a horizontal pipe

2019 ◽  
Vol 178 ◽  
pp. 1-13 ◽  
Author(s):  
P. Babakhani Dehkordi ◽  
L.P.M. Colombo ◽  
E. Mohammadian ◽  
D. Arnone ◽  
A. Azdarpour ◽  
...  
Keyword(s):  
Slug Flow ◽  
Horizontal Pipe ◽  
Viscous Oil ◽  
Oil Water ◽  
Water Gas

Application of Wavelet Analysis for Online Measurement of Crude Oils

2005 ◽  
Vol 295-296 ◽  
pp. 417-422
Author(s):  
X. Li ◽  
Z.L. Ding ◽  
F. Yuan
Keyword(s):  
Wavelet Analysis ◽  
Frequency Domain ◽  
Gas Flow ◽  
Lms Algorithm ◽  
Crude Oils ◽  
Online Measurement ◽  
Oil Pipeline ◽  
Three Phase ◽  
Oil Water ◽  
Water Gas

The correlation method had once been considered as one of the best methods for the measurement of multiphase flow. However, if the behavior of flow does not fit the ergodic random process, the measured cross correlation plot will have a gross distortion when the different components of flow do not pervade within one another to the full extent. We measured a variety of parameters of three phase oil/water/gas flow in an oil pipeline. The change of flow pattern is so complex that the measured signals are always contaminated by stochastic noises. The weak signals are very easily covered by the noise so that it will result in great deviation. Wavelet transformation is an analytical method of both time and frequency domain. The method can achieve signal decomposition and location in time and frequency domain through adjustment and translation of scale. An LMS algorithm in wavelet transform is studied for denoising the signals based on the use of a novel smart capacitive sensor to measure three phase oil/water/gas flow in oil pipeline. The results of simulation and data processing by MATLAB reveal that wavelet analysis has better denoising effects for online measurement of crude oils with high measurement precision and a wide application range.

Analysis of Oil-Water-Gas Three-Phase Flow in a Curved Leaking Pipe

2016 ◽  
Vol 366 ◽  
pp. 144-150
Author(s):  
Boniek Evangelista Leite ◽  
Severino Rodrigues de Farias Neto ◽  
Antonio Gilson Barbosa de Lima ◽  
Lígia Rafaely Barbosa Sarmento
Keyword(s):  
Continuous Phase ◽  
Environmental Damage ◽  
Particle Model ◽  
Phase Flow ◽  
Curved Pipe ◽  
Three Phase ◽  
Three Phase Flow ◽  
Oil Water ◽  
Object Of Study ◽  
Water Gas

The onshore and offshore production of oil and natural gas is characterized by the multiphase flow in ducts and pipes, which are interconnected by various equipments such as wellhead, pumps, compressors, processing platforms, among others. The transport of oil and oil products is essential to the viability of the sector, but is susceptible to failures, that can cause great environmental damage. Considering this necessity of the transportation sector of oil and derivatives, leakage in pipelines with curved connections, are the object of study for various researchers. In this sense, this work contributes to the study of three-phase flow (oil-water-gas) in a curved pipe (90°) using Computational Fluid Dynamics. The physical domain is constituted by two tubes of 4 meters trenched by a 90° curve, with the poring whole in the curvated accessory. The mathematical model is based on a particle model, where the oil is considered as a continuous phase and the water and gas as a particulate phase. The SST (Shear Stress Transport) turbulence model was adopted. All simulations were carried out using the Ansys CFX® 12.1 commercial code. Results of the pressure, velocity and volumetric fraction of the phases are presented and discussed.

Multiphase Flow Induced Vibrations at High Pressure

2020 ◽  
Author(s):  
S. P. C. Belfroid ◽  
N. Gonzalez-Diez ◽  
K. Lunde ◽  
S. Orre
Keyword(s):  
High Pressure ◽  
Energy Content ◽  
Peak Frequency ◽  
Vibration Data ◽  
Main Effect ◽  
Flow Induced Vibrations ◽  
Oil Water ◽  
Clear Shift ◽  
Water Gas ◽  
Oil Gas

Abstract High pressure experiments were done to determine the pressure effect on multiphase induced forces. To that end, a series of water/gas, oil/gas and oil/water/gas vibrations measurements were performed at 10, 25, 45 and 80 bar at different liquid and gas rates in a horizontal, 2″, double Uloop test section installed at the Equinor Porsgrunn site. At higher pressures the vibration amplitude decreased inversely proportional to the pressure. This was measured for both oil and water. Based on the vibration data, the forcing spectrum was reconstructed. In this the same decreased trend was observed, indicating that a changed damping is not the cause of the reduced vibrations. In the forcing spectra the main effect was a higher energy content at lower frequencies. No clear shift in the peak frequency was measured.

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