Influência da vazão de injeção contínua de água no processo de recuperação de óleos: modelagem e simulação / Influence of continuous water injection flow rate in the oil recovery process: modeling and simulation

Separate layer water flooding is adopted in most oilfields in China and the injection flow rate is controlled by the diameter of water nozzle of each layer. In order to ensure the effect of water injection, applicable water nozzles need to be adjusted to meet the requirements of injection flow rate. The adjustment is commonly realized according to experience, which leads to long adjustment time and low efficiency. To solve this problem, the coupling model of wellbore conduit flow, throttled flow and formation seepage was established based on theoretical analysis, which could provide theoretical basis for water nozzles adjustment. In the model, the Bernoulli Equation was adopted to analyze wellbore conduit flow; indoor experiments were done to research throttled flow; the research object of the seepage was finite radius well in homogeneous infinite formation.

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EXPERIMENTAL INVESTIGATION OF FLOW RATE’S EFFECT ON SURFACTANT-ALTERNATING-GAS FOAM PROCESS

Jurnal Teknologi ◽

10.11113/jt.v78.8975 ◽

2016 ◽

Vol 78 (6-4) ◽

Author(s):

Hamed Hematpur ◽

Syed Mohammad Mahmood ◽

Mongy Mohamad Amer

Keyword(s):

Porous Media ◽

Flow Rate ◽

Oil Recovery ◽

Gas Flow ◽

Core Flooding ◽

Foam Flow ◽

Injection Flow Rate ◽

Injection Flow ◽

High Injection ◽

Flow Through

The gas injection is one of the most common methods to increase oil recovery. However, there are several drawbacks in the application of this method due to density and viscosity differences between displaced and displacing fluids. In order to tackle these drawbacks, gas can be utilized as different forms of foam which one of these methods is called Surfactant-Alternating-Gas (SAG). Although many studies have been conducted on foam flow through porous media, the behavior of foam still is moot to some extent. Since, the elaboration of SAG foam behavior in porous media is the aim of this study. However many parameters affect SAG foam behavior, the injection flow rate plays a significant role in foam behavior. In this study, we investigated the flow rate’s effect on SAG behavior. To achieve this target, several cores flooding, in the absence of oil, were conducted and results were interpreted. The experimental design for this work included core flooding apparatus, IOS as surfactant and nitrogen as injected gas. The experiments were interpreted in term of liquid recovery and pressure drop. The results show that the SAG efficiency highly depends on gas flow rate which high injection flow rate, low SAG foam efficiency.

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Evaluation of the impact of viscosity, injection volume, and injection flow rate on subcutaneous injection tolerance

Medical Devices Evidence and Research ◽

10.2147/mder.s91019 ◽

2015 ◽

pp. 473 ◽

Cited By ~ 5

Author(s):

Florence Schwarzenbach ◽

Cecile Berteau ◽

Orchidee Filipe-Santos ◽

Tao Wang ◽

Humberto Rojas ◽

...

Keyword(s):

Flow Rate ◽

Subcutaneous Injection ◽

Injection Volume ◽

Injection Flow Rate ◽

Injection Flow ◽

The Impact

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Effect of Injection Flow Rate on Product Gas Quality in Underground Coal Gasification (UCG) Based on Laboratory Scale Experiment: Development of Co-Axial UCG System

Energies ◽

10.3390/en10020238 ◽

2017 ◽

Vol 10 (2) ◽

pp. 238 ◽

Cited By ~ 10

Author(s):

Akihiro Hamanaka ◽

Fa-qiang Su ◽

Ken-ichi Itakura ◽

Kazuhiro Takahashi ◽

Jun-ichi Kodama ◽

...

Keyword(s):

Flow Rate ◽

Coal Gasification ◽

Laboratory Scale ◽

Underground Coal Gasification ◽

Injection Flow Rate ◽

Injection Flow ◽

Product Gas ◽

Scale Experiment

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Characterization of venturi injector using dimensional analysis

Revista Brasileira de Engenharia Agrícola e Ambiental ◽

10.1590/1807-1929/agriambi.v23n7p484-491 ◽

2019 ◽

Vol 23 (7) ◽

pp. 484-491 ◽

Cited By ~ 1

Author(s):

Luiz R. Sobenko ◽

José A. Frizzone ◽

Antonio P. de Camargo ◽

Ezequiel Saretta ◽

Hermes S. da Rocha

Keyword(s):

Dimensional Analysis ◽

Flow Rate ◽

Injection Rate ◽

Operating Conditions ◽

Functional Tests ◽

Injection Flow Rate ◽

Injection Flow ◽

Hydraulic Conditions ◽

Fluid Properties ◽

Pi Theorem

ABSTRACT Venturi injectors are commonly employed for fertigation purposes in agriculture, in which they draw fertilizer from a tank into the irrigation pipeline. The knowledge of the amount of liquid injected by this device is used to ensure an adequate fertigation operation and management. The objectives of this research were (1) to carry out functional tests of Venturi injectors following requirements stated by ISO 15873; and (2) to model the injection rate using dimensional analysis by the Buckingham Pi theorem. Four models of Venturi injectors were submitted to functional tests using clean water as motive and injected fluid. A general model for predicting injection flow rate was proposed and validated. In this model, the injection flow rate depends on the fluid properties, operating hydraulic conditions and geometrical characteristics of the Venturi injector. Another model for estimating motive flow rate as a function of inlet pressure and differential pressure was adjusted and validated for each size of Venturi injector. Finally, an example of an application was presented. The Venturi injector size was selected to fulfill the requirements of the application and the operating conditions were estimated using the proposed models.

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Influence of mineralization and injection flow rate on flow patterns in three-dimensional porous media

Physical Chemistry Chemical Physics ◽

10.1039/c9cp01382b ◽

2019 ◽

Vol 21 (27) ◽

pp. 14605-14611 ◽

Cited By ~ 2

Author(s):

R. Moosavi ◽

A. Kumar ◽

A. De Wit ◽

M. Schröter

Keyword(s):

Porous Media ◽

Flow Field ◽

Flow Rate ◽

Three Dimensional ◽

Flow Patterns ◽

Low Flow ◽

Flow Rates ◽

Injection Flow Rate ◽

Injection Flow

At low flow rates, the precipitate forming at the miscible interface between two reactive solutions guides the evolution of the flow field.

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Experimental Analysis of CO2 Injection on Permeability of Vuggy Carbonate Aquifers

Journal of Energy Resources Technology ◽

10.1115/1.4007799 ◽

2012 ◽

Vol 135 (1) ◽

Cited By ~ 22

Author(s):

Ibrahim M. Mohamed ◽

Jia He ◽

Hisham A. Nasr-El-Din

Keyword(s):

Flow Rate ◽

Initial Permeability ◽

Co2 Injection ◽

Reaction Products ◽

The Core ◽

Injection Flow Rate ◽

Injection Flow ◽

Injection Scheme ◽

Core Permeability ◽

Permeability Alteration

Reactions of CO2 with formation rock may lead to an enhancement in the permeability due to rock dissolution, or damage (reduction in the core permeability) because of the precipitation of reaction products. The reaction is affected by aquifer conditions (pressure, temperature, initial porosity, and permeability), and the injection scheme (injection flow rate, CO2:brine volumetric ratio, and the injection time). The effects of temperature, injection flow rate, and injection scheme on the permeability alteration due to CO2 injection into heterogeneous dolomite rock is addressed experimentally in this paper. Twenty coreflood tests were conducted using Silurian dolomite cores. Thirty pore volumes of CO2 and brine were injected in water alternating gas (WAG) scheme under supercritical conditions at temperatures ranging from 21 to 121 °C, and injection rates of 2.0–5.0 cm3/min. Concentrations of Ca++, Mg++, and Na+ were measured in the core effluent samples. Permeability alteration was evaluated by measuring the permeability of the cores before and after the experiment. Two sources of damage in permeability were noted in this study: (1) due to precipitation of calcium carbonate, and (2) due to migration of clay minerals present in the core. Temperature and injection scheme don't have a clear impact on the core permeability. A good correlation between the initial and final core permeability was noted, and the ratio of final permeability to the initial permeability is lower for low permeability cores.

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Secondary Oil Recovery by Water Injection: A Numerical Study

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.334-335.83 ◽

2013 ◽

Vol 334-335 ◽

pp. 83-88

Author(s):

A. de Lima Cunha ◽

Severino Rodrigues de Farias Neto ◽

Antônio Gilson Barbosa de Lima ◽

E. Santos Barbosa

Keyword(s):

Oil Recovery ◽

Numerical Study ◽

Water Injection ◽

Recovery Process ◽

Recovery Factor ◽

Oil Reservoir ◽

Isothermal Process ◽

Ansys Cfx ◽

Commercial Package ◽

Secondary Oil Recovery

In this work we carried out a numerical study of the heavy oil recovery process in oil reservoir through water injection. We performed transient tridimensional numerical simulations, considering an isothermal process, with a variation in the position of water injection section (interior and surface) in the reservoir, using the ANSYS CFX 11 commercial package and evaluated its effects on the recovery factor of oil. The numerical results showed that varying the flow rate of water injection from 0.10 to 0.25 kg/s there was an increase in the flow of water and oil produced in 193% and 28%, respectively, and the recovery factor in 16.7%

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Seismic Response to Injection Well Stimulation in a High-Temperature, High-Permeability Reservoir

10.26686/wgtn.13792676.v1 ◽

2021 ◽

Author(s):

C Hopp ◽

Steven Sewell ◽

S Mroczek ◽

Martha Savage ◽

John Townend

Keyword(s):

High Temperature ◽

Compressive Stress ◽

Flow Rate ◽

Matched Filter ◽

Taupo Volcanic Zone ◽

Valuable Insight ◽

High Permeability ◽

Injection Flow Rate ◽

Well Stimulation ◽

Injection Flow

©2019. American Geophysical Union. All Rights Reserved. Fluid injection into the Earth's crust can induce seismic events that cause damage to local infrastructure but also offer valuable insight into seismogenesis. The factors that influence the magnitude, location, and number of induced events remain poorly understood but include injection flow rate and pressure as well as reservoir temperature and permeability. The relationship between injection parameters and injection-induced seismicity in high-temperature, high-permeability reservoirs has not been extensively studied. Here we focus on the Ngatamariki geothermal field in the central Taupō Volcanic Zone, New Zealand, where three stimulation/injection tests have occurred since 2012. We present a catalog of seismicity from 2012 to 2015 created using a matched-filter detection technique. We analyze the stress state in the reservoir during the injection tests from first motion-derived focal mechanisms, yielding an average direction of maximum horizontal compressive stress (SHmax) consistent with the regional NE-SW trend. However, there is significant variation in the direction of maximum compressive stress (σ1), which may reflect geological differences between wells. We use the ratio of injection flow rate to overpressure, referred to as injectivity index, as a proxy for near-well permeability and compare changes in injectivity index to spatiotemporal characteristics of seismicity accompanying each test. Observed increases in injectivity index are generally poorly correlated with seismicity, suggesting that the locations of microearthquakes are not coincident with the zone of stimulation (i.e., increased permeability). Our findings augment a growing body of work suggesting that aseismic opening or slip, rather than seismic shear, is the active process driving well stimulation in many environments.

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Effect of the Pumping-injection flow rate on Heat Transfer Characteristic of Borehole Heat Exchangers for Coupling Ground-Source Heat Pump System

10.21203/rs.3.rs-23773/v2 ◽

2020 ◽

Author(s):

Jiuchen Ma ◽

Qian Jiang ◽

Qiuli Zhang ◽

Yacheng Xie ◽

Yahui Wang ◽

...

Keyword(s):

Heat Transfer ◽

Flow Rate ◽

Heat Exchangers ◽

Transfer Characteristic ◽

Ground Source Heat Pump ◽

Pump System ◽

Heat Pump System ◽

Injection Flow Rate ◽

Injection Flow ◽

Ground Source

Abstract A coupling ground source heat pump system (CGSHP) is established in areas where groundwater is shallow but the seepage velocity is weak, which sets up pumping and injection wells on both sides of borehole heat exchangers (BHEs). A convection-dispersion analytical model of excess temperature in aquifer that considers groundwater forced seepage and axial effects and thermal dispersion effects is proposed. A controllable forced seepage sandbox is built by equation analysis method and similarity criteria. Through indoor test and the proposed analytical model, the correctness and accuracy of the numerical simulation software FEFLOW7.1 is verified. The influence of different pumping-injection flow rate on the heat transfer characteristic of BHEs is studied by numerical simulation. The results show that the average heat efficiency coefficient of BHEs increases and the heat influence range of downstream BHEs expands with the increasing of pumping-injection flow rate. The relation curve between Pe and the increment of heat transfer rate per unit depth of BHEs (Δ`q) is distributed as Gaussian function. The pumping-injection flow rate that makes Darcy velocity reaches 0.6×10-6~1.4×10-6 m∙s-1 in the aquifer is the best reference range for CGSHP system，so 400~600 m3∙d-1 is taken as the best pumping-injection flow rate in this paper.

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