scholarly journals Characterization of Solids from Oilfield Emulsions

2005 ◽  
Vol 13 (6) ◽  
pp. 28-31
Author(s):  
Richard W. Cloud ◽  
Rebecca L. Ramsey ◽  
Robert A. Pultz ◽  
Michael K. Poindexter
Keyword(s):  
Crude Oil ◽  
Gas Evolution ◽  
Water Interface ◽  
Case Scenario ◽  
Pressure Drops ◽  
Liquid Phases ◽  
Oil Water ◽  
Water Gas ◽  
Oil Gas

Production of crude oil is generally accompanied by several other product phases, namely water, gas and solids. Pressure drops across chokes, concomitant gas evolution (due to pressure drops) and turbulence caused by various pipeline configurations can create difficult-to-resolve emulsions. Natural crude oil surfactants and solids exacerbate the problem further by migrating to the newly created oil-water interface and stabilizing the unwanted emulsions. Once the fluids arrive at the production facilities, a variety of vessels are employed to separate the oil, gas and water. Depending on the wettability of the solids, they will exit via one or both of the liquid phases. In a worse case scenario, the solids will accumulate at the oil-water interface.

Study and Evaluation of Changqing Crude Oil Antiwaxing Agent

2019 ◽  
Vol 953 ◽  
pp. 166-171 ◽  
Author(s):  
Qing Mei Luo ◽  
Jian Yang ◽  
Li Jun She ◽  
Wen Jie Wan ◽  
Yun Ma ◽  
...  
Keyword(s):  
Crude Oil ◽  
Removal Rate ◽  
Salt Content ◽  
Water Interface ◽  
Wax Deposition ◽  
Wetting Ability ◽  
Deposit Surface ◽  
Low Salt ◽  
Oil Water ◽  
Wax Removal

In order to solve the problems of wax deposit, this study evaluated the effect of wax cleaning agent used in Changqing and adjusted its formulation. The results showed that the wax removal rate of oil based dewaxing agent was slightly higher than that of emulsion dewaxing agent for crude oil with low salt content. It is possible that the emulsion dewaxing agent contains a certain amount of mutual solvents, which improves its wetting ability at the oil-water interface and makes the oil and water dissolve each other. So that the wax deposit surface from hydrophilic hydrophobic to hydrophilic hydrophobic, forming anti-wax film to prevent wax deposition. Therefore, the wax removal ability of 1#, 3# oil wax is higher than that of oil base wax dewaxing agent.

Effect of Rheology Properties of Oil/Water Interface on Demulsification of Crude Oil Emulsions

2015 ◽  
Vol 54 (17) ◽  
pp. 4851-4860 ◽  
Author(s):  
Jun Tao ◽  
Peng Shi ◽  
Shenwen Fang ◽  
Keyi Li ◽  
Heng Zhang ◽  
...  
Keyword(s):  
Crude Oil ◽  
Water Interface ◽  
Oil Water ◽  
Oil Emulsions

Further Investigations into the Nature of Salt Spheres and Inorganic Structures at the Crude Oil−Water Interface†

2010 ◽  
Vol 24 (4) ◽  
pp. 2376-2382 ◽  
Author(s):  
Richard W. Cloud ◽  
Samuel C. Marsh ◽  
Sandra Linares-Samaniego ◽  
Michael K. Poindexter
Keyword(s):  
Crude Oil ◽  
Water Interface ◽  
Oil Water

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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