Viscosity Measurements for Various Mixed Fluids Used to Enhance Oil Recovery

2017 ◽  
Author(s):  
Mahmoud O. Elsharafi ◽  
Cody Chancellor ◽  
Denzel Kinyua ◽  
Reuben Denwe
Keyword(s):  
Oil Recovery ◽  
Oil Fields ◽  
Effect Of Temperature ◽  
Fluid Viscosity ◽  
Water Mobility ◽  
Reservoir Rocks ◽  
Viscosity Measurements ◽  
Different Types ◽  
Enhance Oil Recovery ◽  
The Impact

In mature reservoirs, the goal is to increase oil mobility and decrease water mobility. As a result, oil production will be increased and unwanted water production will be decreased. Surfactant and alkaline are widely used to change the wettability of reservoir rocks from oil wet to water wet. Viscosity measurements are important in finding out the impact viscous fluids on enhanced oil recovery (EOR). This project focuses on the viscosity measurements of various mixed fluids used in oil-fields to enhance oil recovery. Two types of surfactants (A and B) and one type of alkaline were utilized throughout the work. In addition, different types of oil obtained from different areas were implemented. The viscosity of these mixed fluids was measured while observing the implications of using varying surfactant and alkaline concentrations. Lastly, the effect of temperature on fluid viscosity was monitored.

scholarly journals Viscosity Measurements of Different Fluids Used for Mobility Control in Mature Reservoirs

2017 ◽  
Vol 19 (2) ◽  
pp. 141
Author(s):  
Mahmoud Elsharafi ◽  
Denzel Kinyua ◽  
Cody Chancellor
Keyword(s):  
Oil Recovery ◽  
Oil Production ◽  
Oil Industry ◽  
Mobility Control ◽  
Rock Surface ◽  
Viscosity Measurements ◽  
Different Temperatures ◽  
Carbonate Formations ◽  
Enhance Oil Recovery ◽  
The Impact

In the oil industry, it is important to increase the mobility of hydrocarbon fluids (oil and/or gas) and decrease the mobility of water. Doing so results in an increase in oil production and a decrease in unwanted water production. Polymers have been widely used to increase water viscosity, causing a decrease in water mobility. Surfactants have been used to change reservoir wettability and to clean the rock surface. The use of surfactants changes the formation wettability from oil wet to water wet. This results in an increase in oil production from various water wet sandstone and carbonate formations. Low water salinity has also been used to enhance oil recovery. The mobility of the oil should be more than the mobility of the water to ensure maximum extraction efficiency. As a result, viscosity measurements are very important in determining the impact of a viscous fluid in enhanced oil recovery (EOR). We measured the viscosity of mixed fluids used in the oil industry such as brines of varying concentration (Sodium Chloride and Calcium Chloride solutions) and various polymer solutions at different temperatures.

Laboratory studies of oil-washing characteristics of surfactants in the pore space of reservoir rocks

2021 ◽  
pp. 86-98
Author(s):  
V. Yu. Ogoreltsev ◽  
S. A. Leontiev ◽  
A. S. Drozdov
Keyword(s):  
Oil Recovery ◽  
Pore Space ◽  
Oil Field ◽  
Oil Fields ◽  
Molecular Surface ◽  
Laboratory Studies ◽  
Reservoir Rocks ◽  
Technological Efficiency ◽  
Chemical Eor ◽  
Physical And Chemical

When developing hard-to-recover reserves of oil fields, methods of enhanced oil recovery, used from chemical ones, are massively used. To establish the actual oil-washing characteristics of surfactant grades accepted for testing in the pore space of oil-containing reservoir rocks, a set of laboratory studies was carried out, including the study of molecular-surface properties upon contact of oil from the BS10 formation of the West Surgutskoye field and model water types with the addition of surfactants of various concentrations, as well as filtration tests of surfactant technology compositions on core models of the VK1 reservoir of the Rogozhnikovskoye oil field. On the basis of the performed laboratory studies of rocks, it has been established that conducting pilot operations with the use of Neonol RHP-20 will lead to higher technological efficiency than from the currently used at the company's fields in the compositions of the technologies of physical and chemical EOR Neonol BS-1 and proposed for application of Neftenol VKS, Aldinol-50 and Betanol.

scholarly journals Comparative Study of Using Sea-Water for Enhanced Oil Recovery in Carbonate and Sandstone Reservoirs: Effects of Temperature and Aging Time on Oil Recovery

2018 ◽  
Vol 7 (2) ◽  
pp. 1-13
Author(s):  
Madi Abdullah Naser ◽  
Mohamed Erhayem ◽  
Ali Hegaig ◽  
Hesham Jaber Abdullah ◽  
Muammer Younis Amer ◽  
...  
Keyword(s):  
Aging Time ◽  
Oil Recovery ◽  
Sea Water ◽  
Essential Element ◽  
Recovery Process ◽  
Spontaneous Imbibition ◽  
Effect Of Temperature ◽  
Injection Process ◽  
Reservoir Conditions ◽  
The Impact

Oil recovery process is an essential element in the oil industry, in this study, a laboratory study to investigate the effect of temperature and aging time on oil recovery and understand some of the mechanisms of seawater in the injection process. In order to do that, the sandstone and carbonate cores were placed in the oven in brine to simulate realistic reservoir conditions. Then, they were aged in crude oil in the oven. After that, they were put in the seawater to recover, and this test is called a spontaneous imbibition test. The spontaneous imbibition test in this study was performed at room temperature to oven temperature 80 oC with different sandstone and carbonate rock with aging time of 1126 hours. The result shows that the impact of seawater on oil recovery in sandstone is higher than carbonate. At higher temperature, the oil recovery is more moderate than low temperature. Likewise, as the aging time increase for both sandstone and carbonate rocks the oil recovery increase. 

scholarly journals Study on the Impact of Polymer Retention in Porous Media on Further Surfactant-Polymer Flood

2015 ◽  
Vol 8 (1) ◽  
pp. 45-50 ◽  
Author(s):  
Junjian Li ◽  
Hanqiao Jiang ◽  
Qun Yu ◽  
Fan Liu ◽  
Hongxia Liu
Keyword(s):  
Porous Media ◽  
Oil Recovery ◽  
Underground Water ◽  
Polymer Flooding ◽  
Polymer Flood ◽  
Good Potential ◽  
Enhance Oil Recovery ◽  
Polymer Application ◽  
The Impact ◽  
Polymer Retention

Polymer flood gains expansive popularity as a promising EOR method in various oilfields worldwide. However, there are still substantial amount of resources underground after polymer application. To further enhance oil recovery, secondary chemicals are sometimes utilized to sweep the remaining hydrocarbons to maintain the consistent development of oilfields. In this paper, a series of experiments are established and conducted to explore the feasibility of surfactant/ polymer flooding applied to a polymer flooded reservoir, and also the influence of polymer retention in porous media to enhance the oil recovery performance of subsequent chemical drive. The data of the experiments suggest that surfactant/polymer flooding owns a very good potential as a subsequent EOR technique, and that polymer retention in pores helps block underground water channels, improving greatly the sweeping efficiency of secondary chemical flood.

Effects of Salinity on Nanosilica Applications in Altering Limestone Rock Wettability for Enhanced Oil Recovery

2015 ◽  
Vol 1125 ◽  
pp. 200-204 ◽  
Author(s):  
Wan Rosli Wan Sulaiman ◽  
A.J. Adala ◽  
Radzuan Junin ◽  
Issham Ismail ◽  
Abdul Razak Ismail ◽  
...  
Keyword(s):  
Enhanced Oil Recovery ◽  
Oil Recovery ◽  
Petroleum Industry ◽  
Wettability Alteration ◽  
Displacement Efficiency ◽  
Optimal Salinity ◽  
Reservoir Rocks ◽  
Limestone Rock ◽  
Enhance Oil Recovery

The role of nanoparticles in enhancing oil recovery from oil reservoirs is an increasingly important topic of research. Nanoparticles have the properties that are potentially useful for enhanced oil recovery (EOR) processes. One of the important roles of nanoparticles in petroleum industry is to change the wettability of reservoir rocks. The main objective of this study is to investigate the efficiency of silica nanoparticles in enhancing oil recovery in the presence of formation brine with different concentrations. The methodology of this study involved several laboratory tests. It is divided into two main sections with the aim of enhance oil recovery of oil wet reservoirs. First, the wettability alteration and oil–water interfacial tension modification induced by introducing different concentrations of nanosilica (0.01, 0.05, 0.1wt %) and different concentrations of NaCl formation brine (0.3, 1, 2, 3, 4 wt %) was studied by experimental approach. Second, the displacement test for determining oil recovery for those different concentrations of nanosilica and formation brine. There exists an optimal nanoslica concentration for varying salinity and an optimal salinity for varying nanosilica concentration at which the wettability alteration on oil wet limestone is the maximum for the study. The results revealed that IFT and contact angle tests were found to have the same optimal salinity (0.3wt %) and optimal nanosilica concentration (0.1wt %). Furthermore the highest value of displacement efficiency obtained at nanosilica (0.05wt %) and salinity (0.3 wt %) NaCl. As conclusion, as the salinity increases the extent of wettability alteration, IFT reduction, and enhanced oil recovery by nanosilica decreases.

Optimal Antenna Configurations for Digital Oilfield Implementations

2013 ◽  
Vol 824 ◽  
pp. 187-192
Author(s):  
Francis Enejo Idachaba
Keyword(s):  
Data Security ◽  
Oil Fields ◽  
Communication Link ◽  
Communication Range ◽  
Link Performance ◽  
Last Mile ◽  
Different Types ◽  
Link Availability ◽  
Digital Oilfield ◽  
The Impact

Antennas play a very pivotal role in the development and advancement of digital oil fields. They provide the last mile communication link to the field locations and thus must be properly sized to ensure the link availability and reliability. There are different types of antennas currently being deployed with each having different impacts on the communication link performance. This paper discusses typical antenna configurations for implementing last mile communications to the field in digital oilfield applications. It analyzes the characteristic of each configuration, the impact these different configurations have on data security, deployment speed and communication range and presents an optimal configuration that improves data security, deployment speed and communication range.

scholarly journals METHODICAL APPROACHES OF RESEARCH OF THE TEMPERATURE'S INFLUENCE ON COMPONENT COMPOSITION OF OVERVISCOUS OIL

2016 ◽  
pp. 61-64
Author(s):  
I. A. Guskova ◽  
V. A. Sayakhov ◽  
L. K. Shaydullin ◽  
I. M. Ishkulov
Keyword(s):  
Production Technology ◽  
Component Composition ◽  
High Potential ◽  
Combined Effect ◽  
Oil Fields ◽  
Effect Of Temperature ◽  
Extraction Technology ◽  
Oil Displacement ◽  
Viscous Oil ◽  
The Impact

One of the perspective area of research is the development of oil fields with hard extracting reserves as the deposits of over viscous oil (OVO). For the research on the development of production technology of OVO, which provides a high potential of oil displacement, the method of assessing the impact of exposure to temperature and solvent on the component composition of the OVO was developed. The research results indicate the prospects of the development of OVO extraction technology, providing the combined effect of temperature and solvent.

scholarly journals Analyzing the Effect of Temperature on Squash Ball Impacts Using High-Speed Camera Recordings

2021 ◽  
Author(s):  
Bence Ferenc Berencsi ◽  
Attila Kossa
Keyword(s):  
High Speed ◽  
Elevated Temperatures ◽  
Primary Objective ◽  
Effect Of Temperature ◽  
High Speed Camera ◽  
Compression Tests ◽  
Low Velocity ◽  
Different Types ◽  
Dynamical Parameters ◽  
The Impact

Description of the impact characteristics of different types of balls has a great importance in sport science and in engineering. The primary objective of the present paper is to investigate the effect of the temperature on the impacts of different types of squash balls from a given company. The shots were performed using a self-built air-cannon. The impacts were recorded by a high-speed camera and the recorded videos were analyzed by an image-processing method based on a background subtraction technique. Summarizing the main dynamical parameters, we can conclude that increasing the initial speed will decrease the contact time, the coefficient of restitution (COR) and the rebound resilience, whereas these parameters increase at elevated temperatures. The compression tests revealed that within the low velocity range the deformation of the ball’s material and not the compression of the inner gas is the main contribution in the force needed to compress the ball. However, when the ball suffers large deformations, the internal air pressure has a huge effect on the rebound behavior. The measurements revealed that there is an optimal initial velocity distinct from the maximum one where the rebound velocity of the ball is higher than in all other cases. From the results we can state that the ball's overall stiffness grows as the temperature increases.

scholarly journals The optimization of pre-slug size in CO2-N2 compound flooding

2020 ◽  
Vol 206 ◽  
pp. 02017
Author(s):  
Taoping Chen ◽  
Wen Sun ◽  
Guofang Zhang ◽  
Fuping Wang
Keyword(s):  
Oil Recovery ◽  
Oil And Gas ◽  
Element Model ◽  
Low Permeability ◽  
Experimental Conditions ◽  
Well Spacing ◽  
Well Pattern ◽  
Complete Miscibility ◽  
Enhance Oil Recovery ◽  
The Impact

In order to enhance oil recovery in low and ultra-low permeability layer, both of the numerical simulation and physical model experiment have been researched. First, the dynamic distribution of CO1 and N1 in the oil and gas phase in the CO2-N2 compound flooding process was numerically simulated by using the long slim-tube model. The results show that the CO2 slug should have at least 0.3 PV to prevent the impact of N2 channeling effectively. Second, under the experimental conditions of complete miscibility of CO2-crude oil, the two types of natural cores including low and ultra-low permeability, respectively, are used for experimental study on oil displacement. The results confirm that CO2-N2 compound flooding with 0.3 PV CO2 pre-slug can achieve a good result. Finally, a five-point well pattern element model is established by CMG. The recovery and the gas cost of per ton of oil are calculated respectively for CO2-N2 compound flooding and full CO2 flooding at 300 m well spacing of low and ultra-low permeability layer. According to the simulation results, the optimal CO2 pre-slug size in CO2-N2 compound flooding under the condition of low and ultra-low permeability layer five-point well pattern is 0.4 PV.

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