Foaming Properties and Foam Structure of Produced Liquid in Alkali/Surfactant/Polymer Flooding Production

2021 ◽  
pp. 1-25
Author(s):  
Zhihua Wang ◽  
Xiaoyu Liu ◽  
Huan Luo ◽  
Baoliang Peng ◽  
Xitong Sun ◽  
...  
Keyword(s):  
Polymer Concentration ◽  
Foaming Properties ◽  
Weak Base ◽  
Strong Base ◽  
Efficient Treatment ◽  
Asp Flooding ◽  
Chemical Agents ◽  
Foaming Behavior ◽  
Foam Stabilization ◽  
Foaming Capacity

Abstract Alkali/surfactant/polymer (ASP) flooding process is proven to be vitally effective for enhancing oil recovery (EOR) in the oil industry. However, foaming behavior is generated by the breakthrough of chemical agents in the produced liquid and is increasingly concerned as a terrible problem during production. A set of experiments was recently performed to investigate the effects of foaming properties of ASP flooding produced liquid. The factors affecting foaming capacity and foam stabilization were discussed, and the differences in foaming properties of produced liquid between strong base and weak base ASP flooding were firstly compared. The results indicated that in addition to temperature and pressure, the concentrations of chemical agents in the produced liquid were responsible for the foaming properties and foam stabilization. The foaming capacity could enhance 3∼7% at 45 °C compared with a lower temperature of 35 °C. The average comprehensive index of the foam could increase from 2.2×105 at 29 psi to 2.5×105 at 73 psi. The regularity of Plateau borders was highlighted at higher pH and surfactant concentration, and thus facilitated the foam stabilization. The liquid film thickened and its shape expanded to the state of maintaining foam stabilization with the increase of polymer concentration. Furthermore, the foaming behavior of produced liquid in strong base ASP flooding production is much more troublesome than that in weak base ASP flooding production. This study is significant in that it further supports the development of efficient treatment technology for produced liquid in oilfield.

scholarly journals Utilization of Extract of Sambang Getih Leaves (Hemigraphis colorata. Hall. F) as a Acid-Base Indicator

2020 ◽  
Vol 9 (1) ◽  
pp. 7-15
Author(s):  
Eksari Ekasari ◽  
Purnama Ningsih
Keyword(s):  
Leaf Extract ◽  
Strong Acid ◽  
Weak Base ◽  
Acid Base ◽  
Strong Base ◽  
Unique Color ◽  
Acid Base Titration ◽  
Naoh Solution ◽  
Ph Range ◽  
Color Pigment

Getih sambang leaves (Hemigraphis Colorata. Hall. F) are plants that have a distinctive and unique color, namely the upper surface of the leaf is green and the bottom of the leaf is burgundy where sambang leaves contain anthocyanin compounds. Anthocyanin is the color pigment in plants that forms the basis of the use of natural indicators. This study aims to prove whether getih cucumber leaves can be used as an acid-base indicator, to determine the type of acid-base titration that is suitable for indicators of getih cucumber leaves, and to find out what the pH-changing color route of getih cucumber leaves is. The method used is extraction, namely maceration. Wee leaves are macerated by using methanol as a solvent for 24 hours. The extract was previously tested using HCl solution and NaOH solution as a test to prove the presence of anthocyanin. The results obtained in this study, getih sambang leaf extract can be used as an indicator of acid base, and also the type of acid-base titration that is suitable for use in the indicator of getih leaf extract extract precisely on the titration of strong-base strong acid, and strong weak base-acid It is best used as a substitute for the phenolphthalein indicator. In titration of strong and weak acids and bases, it is good to be used as a substitute for the indicator of methyl orange. The pH range obtained from the getih sambang leaf extract is pH 4-7 (red-purple).

Coreflood Model Calibration for Alkali Surfactant Polymer Process from a High Salinity Reservoir to Design an ASP Pilot

2021 ◽  
Author(s):  
Marisely Urdaneta
Keyword(s):  
Numerical Simulation ◽  
Simulation Model ◽  
Oil Recovery ◽  
Water Saturation ◽  
Polymer Concentration ◽  
Chemical Flooding ◽  
Adsorption Parameters ◽  
Oil Saturation ◽  
The Core ◽  
Asp Flooding

Abstract This paper aims to address calibration of a coreflood Alkali Surfactant Polymer (ASP) formulation experiment through parametrization of fluid-fluid and rock-fluid interactions considering cation exchange capacity and by rock to guide an ASP pilot design. First of all, a series of chemical formulation experiments were studied in cores drilled from clastic reservoir so that displacement lab tests were run on linear and radial cores to determine the potential for oil recovery by ASP flooding and recommended the chemical formulation and flooding schemes, in terms of oil recovery. Therefore, to simulate the process, those tests performed with radial core injection were taken, because this type of test has a better representation of the fluid flow in reservoir, the fluids are injected by a perforation in the center of the core, moving in a radial direction the fluids inside the porous medium. Subsequently, displaced fluids are collected on the periphery of the core carrier and stored in graduated test tubes. The recommended test was carried out to the phase of numerical simulation and historical matching. Reservoir simulation is one of the most important tools available to predict behavior under chemical flooding conditions and to study sensitivities based on cost-effective process implementation. Then, a radial core simulation model was designed from formulation data with porosity of 42.6%, a pore volume (PV) of 344.45 ml, radius of 7.17 cm and weight of 1225.84 g. The initial oil saturation was 0.748 PV (257.58 ml), with a critical water saturation of 0.252 PV (86.78 ml). For the simulation model historical matching, adjustments were made until an acceptable comparison was obtained with laboratory test production data through parameterization of relative permeability curves, chemical adsorption parameters, polymer viscosity, among others; resulting in an accumulated effluents production mass 37% greater for alkali than obtained in the historical, regarding to surfactant the deviation was 8% considered acceptable and for the polymer the adjustment was very close. For the injector well bottom pressure, the viscosity ratio of the mixture was considered based on the polymer concentration and the effect of the shear rate on the viscosity of the polymer as well as the effect of salinity in the alkali case. Finally, a calibrated coreflood numerical simulation model was obtained for ASP flooding to design an ASP Pilot with a residual oil saturation of 0.09 PV (31 ml) meaning 64% more recovered oil compared to a waterflooding case.

Research on Influence Factor of Scale in ASP Flooding

2014 ◽  
Vol 1061-1062 ◽  
pp. 267-271
Author(s):  
Zhi Feng Hou
Keyword(s):  
Calcium Carbonate ◽  
Influence Factor ◽  
Single Agent ◽  
Liquid System ◽  
Molecular State ◽  
Adsorption Effect ◽  
Strong Base ◽  
Asp Flooding ◽  
Scale Preparation ◽  
State Scale

Machine production well scaling is one of the three components flooding oil technology industrialization main bottleneck problem. With the mining into the scaling in the late three, strong base ASP flooding produced liquid system formed under the condition of the molecular state scale. Preparation of calcium carbonate particles indoor system, by using a particle size analyzer to evaluate the ASP’s single agent on the growth of calcium carbonate particle effects, to investigate the molecular state scaling mechanism, the results show that the adsorption effect on package fouling mechanism and polymer into molecular state scale.

scholarly journals Kinetic, isotherm and thermodynamic investigations of nitrite (NO2–) removal from water by anion exchange resins

2018 ◽  
Vol 20 (2) ◽  
pp. 368-372 ◽  
Keyword(s):  
Anion Exchange ◽  
Freundlich Isotherm ◽  
Isotherm Models ◽  
Order Kinetic ◽  
Weak Base ◽  
Strong Base ◽  
Anion Exchange Resins ◽  
Base Resin ◽  
Equilibrium Data ◽  
Exchange Resins

This study presents the evaluation of a strong base (Purolite A200) and weak base (Purolite PFA847) polymeric anion exchange resins for nitrite removal. The different parameters on the removal of NO2– were investigated in batch sorption mode. Common isotherm models; Langmuir and Freundlich, were used in order to present a description of the equilibrium data. Experimental results showed that the equilibrium data tend to follow Freundlich isotherm model for weak base resin and Langmuir model for strong base resin. The sorption of NO2– on anion exchange resins was found to follow the pseudo-second order kinetic model. The values of thermodynamic parameters proved that ion exchange reaction of NO2– onto such resins are endothermic (ΔH > 0).

scholarly journals Titration Involving a Strong Base and Weak Acid

2013 ◽  
pp. 64-70
Keyword(s):  
Titration Curve ◽  
Strong Acid ◽  
Weak Acid ◽  
Weak Base ◽  
Strong Base

In this exercise students will learn about the reactions between a strong base and weak, as well as a weak base and a strong acid. Students will simulate a titration curve that would be obtained if a strong acid and a weak base were reacted, and they will advance their knowledge of using a spreadsheet in chemistry related exercises.

Surface properties of the bovine casein components: relationships between structure and foaming properties

1989 ◽  
Vol 56 (3) ◽  
pp. 495-502 ◽  
Author(s):  
Denis Lorient ◽  
Brigitte Closs ◽  
Jean Luc Courthaudon
Keyword(s):  
Surface Tension ◽  
Ionic Strength ◽  
Foam Stability ◽  
Covalent Binding ◽  
High Surface ◽  
Surface Hydrophobicity ◽  
Foaming Properties ◽  
Foam Formation ◽  
Foaming Capacity ◽  
Low Ionic Strength

SummaryIn order to optimize the use of caseins as surfactants, the surface tension, foaming capacity and stability were measured as a function of pH, ionic strength, protein concentration and polarity (modified by covalent binding of carbohydrates). We found that the caseins differ in their behaviour at the air/water interface with β-casein showing the greatest ability to decrease surface tension and to produce foams, due probably to its amphipathic structure. In experiments carried out at pH values close to pI, with low ionic strength and constant solubility (optimal conditions for foam formation), we observed a high surface hydrophobicity, a good accessibility and flexibility of peptidic side chains (evaluated by proteolysis), and a high foaming capacity parallelled by increased surface pressure. Foam stability of caseins was low compared to those of globular proteins such as β lactoglobulin.

scholarly journals Recyclable polyether–polyquaternium grafted SiO2 microsphere for efficient treatment of ASP flooding-produced water: oil adsorption characteristics and mechanism

RSC Advances ◽  
2020 ◽  
Vol 10 (26) ◽  
pp. 15124-15131 ◽  
Author(s):  
Hao Sun ◽  
Xin He ◽  
Qian Tang ◽  
Xiaobing Li
Keyword(s):  
Produced Water ◽  
Water Separation ◽  
Efficient Treatment ◽  
Adsorption Characteristics ◽  
Asp Flooding ◽  
Oil Water Separation ◽  
Oil Adsorption ◽  
Oil Water

A recyclable functional microsphere was developed which significantly enhances oil–water separation and decreases chemical demulsifier consumption.

Influence of Scaling in Alkaline/Surfactant/Polymer Flooding Surface Process

2013 ◽  
Vol 734-737 ◽  
pp. 1395-1399
Author(s):  
Nan Ning Wei ◽  
Liu Shuai Su
Keyword(s):  
Development Process ◽  
Polymer Concentration ◽  
Influence Factors ◽  
Simulation Experiments ◽  
Corrosion Scale ◽  
Asp Flooding ◽  
Silica Scale ◽  
Normal Production ◽  
Oilfield Development ◽  
Alkaline Surfactant Polymer

With the Alkaline-surfactant-polymer (ASP) flooding production processs developing, deposition and scaling problems are serious in ground watering and gathering system, pronounced at watering pipeline and heating furnace. So challenges must be faced with in oilfield development process, such as energy consumption increase, equipments and pipelines are damaged easily, and equipments service life shortens. The component of scale sample, which is took from ASP flooding area of Xingbei Oilfield in Daqing Oilfield, in surface watering system is investigated. The influence factors and regulation of scaling in watering system are studied by simulation experiments. It turned out that the scale sample is consists of silica scale, carbonate scale, corrosion scale and organic substance, and the silica scale is the main scale, which content is more than 45%. The watering temperature, flow rate and polymer concentration are main factors of influencing scaling in watering system. Under the conditions of ASP flooding normal production, the effect of polymer concentration is prominent.

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