Influence of Compressed Carbon Dioxide on the Capillarity of the Gas−Crude Oil−Reservoir Water System

2010 ◽  
Vol 55 (11) ◽  
pp. 5246-5251 ◽  
Author(s):  
Philip T. Jaeger ◽  
Mohammed B. Alotaibi ◽  
Hisham A. Nasr-El-Din
Keyword(s):  
Carbon Dioxide ◽  
Crude Oil ◽  
Water System ◽  
Oil Reservoir ◽  
Reservoir Water ◽  
Compressed Carbon Dioxide

The effectiveness of chemicals used in the process of transmitting crude oil from the well to the processing plant

Nafta-Gaz ◽  
2020 ◽  
Vol 76 (11) ◽  
pp. 774-783
Author(s):  
Dariusz Bęben ◽  
Keyword(s):  
Natural Gas ◽  
Crude Oil ◽  
Economic Benefits ◽  
Chloride Ions ◽  
Processing Plant ◽  
Oil Reservoir ◽  
Reservoir Water ◽  
Oil Flow ◽  
Emulsion Separation ◽  
The Subject

Chemicals are added to crude oil to ensure that it flows from the well to the processing plant. Depending on the composition of the reservoir fluids being extracted (crude oil, reservoir water, natural gas), paraffin may be separated from the crude oil, hydrates may be formed from reservoir water and natural gas, and the combination of reservoir water and crude oil may form an emulsion. Those situations should be avoided to ensure continuous flow from the wellbore to the processing plant. To this end, chemicals, paraffin inhibitors, hydrate inhibitors, and demulsifiers are used. Based on the literature on the subject and on the author’s own experience from observing technological processes, research methods were proposed to assess the effectiveness of chemicals used to ensure the continuity of crude oil flow. The crude oil selected for the tests was characterised by a high content of paraffins, asphaltenes, chloride ions, and water. To determine the onset of paraffin precipitation, tests were conducted based on a change in viscosity and a coupon method – determining the weight gain on a coupon to check the effectiveness of a paraffin inhibitor. The rate of emulsion separation was evaluated in separating funnels. The water released from crude oil often leaches the salt contained within it. Various demulsifiers were used to investigate the separation of emulsions and the purification of oil from salts; silicone demulsifiers in particular were considered. To determine the change in the amount of salt in crude oil, a conductometric measurement was performed. The amount of demulsifier used for phase separation was determined by changing the surface tension. The proposed solution for the use of chemicals to transport and purify crude oil yields tangible economic benefits. The article summarises the research procedures and presents the results for selected crude oil and chemicals.

Separation of Methane from Shuttle Tanker Vents Gases by Adsorption on a Polyurethane/Zeolite Membrane

2017 ◽  
Vol 733 ◽  
pp. 42-46
Author(s):  
Habiba Shehu ◽  
Edidiong Okon ◽  
Edward Gobina
Keyword(s):  
Carbon Dioxide ◽  
Physical Properties ◽  
Crude Oil ◽  
Deep Water ◽  
Separation Factor ◽  
Gas Permeation ◽  
Zeolite Membrane ◽  
Alumina Support ◽  
Molar Flux

Shuttle tankers are becoming more widely used in deep water installations as a means of transporting crude oil to storage plants and refineries. The emissions of hydrocarbon vapours arise mainly during loading and offloading operations. Experiments have been carried out on the use of polyurethane/zeolite membrane on an alumina support for the separation of methane from carbon dioxide and oxygen. The physical properties of the membrane were investigated by FTIR. Single gas permeation tests with methane, propane, oxygen and carbon dioxide at a temperature of 293 K and pressure ranging from 0.1 to 1.0 x 10-5 Pa were carried out. The molar flux of the gases through the membrane was in the range of 3 x 10-2 to 1 x 10-1 molm-2s-1. The highest separation factor of CH4/CO2 and CH4/O2 and CH4/C3H8 was determined to be 1.7, 1.7 and 1.6 respectively.

An Experimental Calculation of Asphaltene Critical Properties in Crude Oil Reservoir Systems

2013 ◽  
Vol 31 (17) ◽  
pp. 1797-1811
Author(s):  
A. Khaksar Manshad ◽  
M. K. Manshad ◽  
H. Rahideh ◽  
M. Vaghefi
Keyword(s):  
Crude Oil ◽  
Oil Reservoir ◽  
Critical Properties ◽  
Reservoir Systems
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