Insight into Smart-Water Recovery Mechanism through Detailed History Matching of Coreflood Experiments

2013 ◽  
Author(s):  
Abdulkareem Mohamad Al-sofi ◽  
Ali A Yousef
Keyword(s):  
History Matching ◽  
Water Recovery ◽  
Detailed History ◽  
Recovery Mechanism ◽  
Smart Water ◽  
Insight Into

Gangue Entrainment in Olivine Flotation: Effect of MIBC Dosage on the Mitigation of Lizardite Recovery

2020 ◽  
Vol 10 (2) ◽  
pp. 98-106
Author(s):  
Taki Guler ◽  
Ercan Polat
Keyword(s):  
Experimental Finding ◽  
Raw Material ◽  
Water Recovery ◽  
Loss On Ignition ◽  
Group Mineral ◽  
Recovery Mechanism ◽  
Similar Chemical ◽  
Petrographic Analyses ◽  
Composition Of Minerals

Background: Olivine is an important industrial raw material especially for metallurgical applications like foundry sand, refractory, slag conditioning, etc. Loss On Ignition (LOI) value (>1%) is the main specification of olivine ore/concentrate for those areas together with the chemical specifications. Objective: This flotation study was conducted in natural pH condition with Na-oleate as collector to clarify the effect of frother (MIBC) dosage on the LOI value of olivine concentrate. Methods: Characterization of ore sample for this study was made by XRD, XRF and petrographic analyses. Lizardite, a serpentine group mineral, was found to be a hydrated soft fraction of ore sample in addition to hard olivine and pyroxene minerals constituting ore. Results: Finely ground soft lizardite adversely affected the olivine flotation in a way of entraining mechanically into concentrate. LOI value of concentrate was observed mainly to be froth volume depended issue, and therefore, mainly water recovery dependent. LOI value increased proportionally with water recovery at longer flotation time and MIBC dosages indicating the entrainment of lizardite as the suspending hydrophilic component of water phase. Certain rate of the hydrated lizardite mineral was thought to be recovered via hydrophobization, which was clearly seen especially at the initial stages of flotation period in the presence of excess frother. This experimental finding was attributed to similar chemical composition of minerals constituting ore, and accidental activation of lizardite. Conclusions: Lizardite recovery in froth was explained with accidental activation and/or weak attachment of locked particles onto froth bubble although main recovery mechanism was determined to be mechanical entrainment. Olivine concentrate obeying the specifications of metallurgical applications could be obtained at suitable MIBC dosage and flotation time.

Insight into the water recovery characteristics of tetrabutylphosphonium hydrogen maleate ionic liquid draw solute in forward osmosis process

2019 ◽  
pp. 183-189
Author(s):  
Po-I Liu ◽  
Li-Ching Chung ◽  
David C. Wang ◽  
Chia-Hua Ho ◽  
Tzu-Yu Cheng ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Forward Osmosis ◽  
Water Recovery ◽  
Insight Into

scholarly journals Understanding hormonal crosstalk in Arabidopsis root development via emulation and history matching

2020 ◽  
Vol 19 (2) ◽  
Author(s):  
Samuel E. Jackson ◽  
Ian Vernon ◽  
Junli Liu ◽  
Keith Lindsey
Keyword(s):  
Experimental Data ◽  
Mathematical Model ◽  
Parameter Space ◽  
History Matching ◽  
Parameter Spaces ◽  
Arabidopsis Root ◽  
Biologically Relevant ◽  
Hormonal Crosstalk ◽  
The Mathematical Model ◽  
Insight Into

AbstractA major challenge in plant developmental biology is to understand how plant growth is coordinated by interacting hormones and genes. To meet this challenge, it is important to not only use experimental data, but also formulate a mathematical model. For the mathematical model to best describe the true biological system, it is necessary to understand the parameter space of the model, along with the links between the model, the parameter space and experimental observations. We develop sequential history matching methodology, using Bayesian emulation, to gain substantial insight into biological model parameter spaces. This is achieved by finding sets of acceptable parameters in accordance with successive sets of physical observations. These methods are then applied to a complex hormonal crosstalk model for Arabidopsis root growth. In this application, we demonstrate how an initial set of 22 observed trends reduce the volume of the set of acceptable inputs to a proportion of 6.1 × 10−7 of the original space. Additional sets of biologically relevant experimental data, each of size 5, reduce the size of this space by a further three and two orders of magnitude respectively. Hence, we provide insight into the constraints placed upon the model structure by, and the biological consequences of, measuring subsets of observations.

Numerical Simulation of Coning Behavior of a Single Well in a Naturally Fractured Reservoir

1983 ◽  
Vol 23 (06) ◽  
pp. 879-884 ◽  
Author(s):  
Huan-Zhang Chen
Keyword(s):  
Mass Transfer ◽  
Fluid Flow ◽  
History Matching ◽  
Petroleum Exploration ◽  
Dual Porosity ◽  
Fractured Reservoir ◽  
Axially Symmetric ◽  
Drainage Radius ◽  
Water Zone ◽  
Insight Into

Chen, Huan-Zhang; Scientific Research Inst. of Petroleum Exploration and Development Abstract The history matching and predicting of an actual well in a reservoir with double porosity is performed with a new coning simulation model that gives satisfactory results. A discussion of the parameters used for matching provides some insight into the structure and parameters of provides some insight into the structure and parameters of the reservoir. Other points discussed includebottomwater rising characteristics,a comparison between the dual porosity and the single porosity (assuming that the mass transfer between the fracture and matrix is equal to zero), andthe imbibition characteristics of matrix. Introduction The mathematical equations describing fluid flow in the dual-porosity medium were presented in the 1960's. Kazemi et al. obtained the numerical solution of this problem in 1976 but did not present the solution of problem in 1976 but did not present the solution of coning, and the flow terms of matrix in the equations were neglected. Since 1977, Wu Wan-yi of Beijing U. has done extensive research on this aspect. His work-the axially symmetric water coning problem-is based on a dual-porosity-medium model and equations presented by Barenblatt and Jeltov. All the terms that should appear in the equations are included-i.e., the fluid flow between the matrix blocks has not been neglected. The harmonic average value of mobility of fissure and matrix is used as the imbibition coefficient. All nonlinear coefficients are linearized, and the semi-implicit scheme is used in the difference equations. These equations are solved by the direct solution method. We performed a further study based on these works, using an improved program to give a good history matching with an actual program to give a good history matching with an actual well behavior. Our results are discussed in detail in this paper. This method may be used to solve the problems of paper. This method may be used to solve the problems of multidimensional, two-phase fluid flow. Model Structure The structure of the model is shown in Fig. 1. It is a cylinder, which represents a part of the reservoir controlled by the well. Its axis coincides with the axis of the well, and the radius of the cylinder represents the drainage radius of the well. The top and flank of this cylinder are impervious. The bottomwater is supplied from the lower surface of the cylinder, and the pressure on this surface is maintained at a constant value. The upper part of the cylinder is oil zone, the middle is transition zone, and the lower is water zone. The well may be perforated in both oil zone and water zone or in only one of the two zones. In any given depth, there may be a horizontal thin impervious break with a changeable radius. Fluid-Flow Equations Assume that the fluids are immiscible, and that both the medium and fluids are slightly compressible. In addition to the continuous flow in fracture and matrix, there is the mass transfer between the fracture and matrix. Under these assumptions, the flow of fluids satisfies the following equations. ..........................................(1) SPEJ p. 879

Calibration problems in hydrogen luminosities

1966 ◽  
Vol 24 ◽  
pp. 322-330
Author(s):  
A. Beer
Keyword(s):  
Galactic Structure ◽  
B Stars ◽  
Insight Into

The investigations which I should like to summarize in this paper concern recent photo-electric luminosity determinations of O and B stars. Their final aim has been the derivation of new stellar distances, and some insight into certain patterns of galactic structure.

Stochasting modeling of planetary ring systems

1984 ◽  
Vol 75 ◽  
pp. 461-469 ◽  
Author(s):  
Robert W. Hart
Keyword(s):  
Maximum Entropy ◽  
Ring System ◽  
The Sun ◽  
Ultimate State ◽  
Interparticle Interactions ◽  
Ring Systems ◽  
First Order ◽  
Planetary Ring ◽  
Insight Into

ABSTRACTThis paper models maximum entropy configurations of idealized gravitational ring systems. Such configurations are of interest because systems generally evolve toward an ultimate state of maximum randomness. For simplicity, attention is confined to ultimate states for which interparticle interactions are no longer of first order importance. The planets, in their orbits about the sun, are one example of such a ring system. The extent to which the present approximation yields insight into ring systems such as Saturn's is explored briefly.

Skeletal elements of crinoid echinoderms: High-resolution structural and microanalytical results

1983 ◽  
Vol 41 ◽  
pp. 194-195
Author(s):  
D. F. Blake ◽  
L. F. Allard ◽  
D. R. Peacor
Keyword(s):  
High Resolution ◽  
Marine Invertebrates ◽  
Sea Urchins ◽  
Structural Features ◽  
Sea Stars ◽  
High Resolution Tem ◽  
Relationship Of ◽  
The Relationship ◽  
Insight Into

Echinodermata is a phylum of marine invertebrates which has been extant since Cambrian time (c.a. 500 m.y. before the present). Modern examples of echinoderms include sea urchins, sea stars, and sea lilies (crinoids). The endoskeletons of echinoderms are composed of plates or ossicles (Fig. 1) which are with few exceptions, porous, single crystals of high-magnesian calcite. Despite their single crystal nature, fracture surfaces do not exhibit the near-perfect {10.4} cleavage characteristic of inorganic calcite. This paradoxical mix of biogenic and inorganic features has prompted much recent work on echinoderm skeletal crystallography. Furthermore, fossil echinoderm hard parts comprise a volumetrically significant portion of some marine limestones sequences. The ultrastructural and microchemical characterization of modern skeletal material should lend insight into: 1). The nature of the biogenic processes involved, for example, the relationship of Mg heterogeneity to morphological and structural features in modern echinoderm material, and 2). The nature of the diagenetic changes undergone by their ancient, fossilized counterparts. In this study, high resolution TEM (HRTEM), high voltage TEM (HVTEM), and STEM microanalysis are used to characterize tha ultrastructural and microchemical composition of skeletal elements of the modern crinoid Neocrinus blakei.

Structure and function of neural networks in the retina

1988 ◽  
Vol 46 ◽  
pp. 26-27
Author(s):  
Peter Sterling
Keyword(s):  
Ganglion Cells ◽  
Three Dimensional ◽  
Structure And Function ◽  
Synaptic Connections ◽  
Visual Axis ◽  
One Dimensional ◽  
Cat Retina ◽  
Ultrathin Sections ◽  
And Function ◽  
Insight Into

The synaptic connections in cat retina that link photoreceptors to ganglion cells have been analyzed quantitatively. Our approach has been to prepare serial, ultrathin sections and photograph en montage at low magnification (˜2000X) in the electron microscope. Six series, 100-300 sections long, have been prepared over the last decade. They derive from different cats but always from the same region of retina, about one degree from the center of the visual axis. The material has been analyzed by reconstructing adjacent neurons in each array and then identifying systematically the synaptic connections between arrays. Most reconstructions were done manually by tracing the outlines of processes in successive sections onto acetate sheets aligned on a cartoonist's jig. The tracings were then digitized, stacked by computer, and printed with the hidden lines removed. The results have provided rather than the usual one-dimensional account of pathways, a three-dimensional account of circuits. From this has emerged insight into the functional architecture.

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