Methodology for Express Definition of Water Inflow Source in Water-Flooded Wells Operating Multi-Layer Deposits by High-Precision Studies of Water Composition

2020 ◽  
Author(s):  
M. Shipaeva ◽  
D. Nurgaliev ◽  
I. Siraeva ◽  
I. Bagmanov ◽  
V. Sudakov
Keyword(s):  
High Precision ◽  
Water Inflow ◽  
Water Composition ◽  
Definition Of

scholarly journals Solar barycentric dynamics from a new solar-planetary ephemeris

2018 ◽  
Vol 615 ◽  
pp. A153 ◽  
Author(s):  
Rodolfo G. Cionco ◽  
Dmitry A. Pavlov
Keyword(s):  
High Precision ◽  
Orbital Motion ◽  
Giant Planets ◽  
Reference Plane ◽  
The Sun ◽  
The Future ◽  
Dynamical Parameters ◽  
Definition Of ◽  
Invariable Plane ◽  
Planetary Theories

Aims. The barycentric dynamics of the Sun has increasingly been attracting the attention of researchers from several fields, due to the idea that interactions between the Sun’s orbital motion and solar internal functioning could be possible. Existing high-precision ephemerides that have been used for that purpose do not include the effects of trans-Neptunian bodies, which cause a significant offset in the definition of the solar system’s barycentre. In addition, the majority of the dynamical parameters of the solar barycentric orbit are not routinely calculated according to these ephemerides or are not publicly available. Methods. We developed a special version of the IAA RAS lunar–solar–planetary ephemerides, EPM2017H, to cover the whole Holocene and 1 kyr into the future. We studied the basic and derived (e.g., orbital torque) barycentric dynamical quantities of the Sun for that time span. A harmonic analysis (which involves an application of VSOP2013 and TOP2013 planetary theories) was performed on these parameters to obtain a physics-based interpretation of the main periodicities present in the solar barycentric movement. Results. We present a high-precision solar barycentric orbit and derived dynamical parameters (using the solar system’s invariable plane as the reference plane), widely accessible for the whole Holocene and 1 kyr in the future. Several particularities and barycentric phenomena are presented and explained on dynamical bases. A comparison with the Jet Propulsion Laboratory DE431 ephemeris, whose main differences arise from the modelling of trans-Neptunian bodies, shows significant discrepancies in several parameters (i.e., not only limited to angular elements) related to the solar barycentric dynamics. In addition, we identify the main periodicities of the Sun’s barycentric movement and the main giant planets perturbations related to them.

Impact of high precision gravimetry in the context of a future new SI

2014 ◽  
Vol 30 ◽  
pp. 1460270
Author(s):  
Henri Baumann ◽  
Ali L. Eichenberger
Keyword(s):  
High Precision ◽  
Laser Interferometer ◽  
Mass Unit ◽  
Research Areas ◽  
Gravity Measurements ◽  
Definition Of ◽  
New Research ◽  
New Si ◽  
The Doors

In the early eighties, the development of ballistic absolute gravimeters based on laser interferometer opened the doors to new research areas in various scientific domains such as geodesy, geophysics or metrology. After a brief overview of the most used technique for gravity measurements, the implication of gravity in the context of an improved SI, especially for a new definition of the mass unit kg, will be presented.

THE APPLICATION OF 3D SEISMIC INTERPRETATION TECHNIQUES FOR OPTIMISING WELL PLACEMENT: FORTESCUE FIELD RE DEVELOPMENT, GIPPSLAND BASIN

1997 ◽  
Vol 37 (1) ◽  
pp. 31
Author(s):  
P.J. Ryan ◽  
T.E. Vinson
Keyword(s):  
High Precision ◽  
Seismic Data ◽  
Development Program ◽  
Seismic Interpretation ◽  
3D Seismic ◽  
Well Placement ◽  
Seismic Waveform ◽  
Attribute Analysis ◽  
Definition Of ◽  
Gippsland Basin

In order to achieve successful drilling results on mature fields, geophysical analysis has become increasingly focussed on the application of high precision 3D seismic interpretation and analysis techniques. These techniques were critical to the success of the re-development program recently completed on the Fortescue Field* Gippsland Basin. Fortescue, initially developed in 1983, contains an estimated oil reserve of 300 million barrels. The field is currently over 80 percent depleted. To offset declining production and develop remaining reserves, an 18 well additional drilling program together with upgrades to platform topsides and production facilities was conducted on the field from October 1994 to October 1996.Many of the proposed additional drilling opportunities relied on oil being trapped structurally updip from existing completions. Given the size (approx. 1 MSTB) and subtle, low relief nature of the targets being pursued, the precision of conventional 3D seismic interpretation techniques was inadequate to optimise the location of wells. This necessitated the development of a series of specific tools that could provide high resolution definition of both the trap and lithology as well as optimising well placement.These high precision interpretation techniques include: reservoir subcrop edge prediction through qualitative calibration of geological models to seismic data: the assessment of overburden velocity distortions of the seismic time field by utilising isochron mapping and interval attribute analysis; and prediction of trap geometries and lateral stratigraphic variations by the application of seismic waveform attributes.The application of these advanced 3D seismic interpretation techniques and their integration with related geoscience and engineering technologies resulted in the completion of a successful 18 well re-development program for the Fortescue field.

Способ обработки результатов магнитной дефектоскопии для достоверного обнаружения опасных дефектов сплошности в реальном времени

2020 ◽  
pp. 58-64
Author(s):  
А.Н. Печенков
Keyword(s):  
Magnetic Field ◽  
Inverse Problem ◽  
Inverse Problems ◽  
Computer Program ◽  
Real Time ◽  
High Precision ◽  
Computational Method ◽  
On Line ◽  
Definition Of ◽  
Minimization Of Functional

The inverse problems of magnetostatics for defects of a continuum can be formulated in various ways. It is possible to set a task of definition of defects with high precision and permission,or it is possible to limit the task to detection of several types of defects («dangerous» defects) with good probability. At the same time «small» defects will be passed by the computer program. The problem of minimization of functional for both experimental and computational magnetic field differences is the main problem for the solution of any inverse problem, both in on – line (real time), and in off - line modes. Computational method of calculations in real time of the simplified inverse problem, without accumulation of experimental databases is considered.

Determination of Generalized Coordinates and Forces for Generation of the Three Dimensional Curves with Torsion by PKM (Parallel Kinematik Machines)

2010 ◽  
Vol 166-167 ◽  
pp. 15-26
Author(s):  
N.V. Orlandea
Keyword(s):  
High Precision ◽  
Reference System ◽  
Three Dimensional ◽  
Control Parameters ◽  
Kinematic Control ◽  
Generalized Coordinates ◽  
Definition Of

The paper describes the definition of a set of generalized coordinates and forces (kinematic control parameters) necessary to satisfy a specific job. Specifically, the generation of a three dimensional curve with torsion described by a Frenet reference system. The method employed to accomplish this task is using the Original ADAMS program alias MCADA. The analysis results indicate that the method can be successfully applied when designing motion simulators; however, there are accuracy restrictions for high precision six axis machining.

scholarly journals High Precision Crowded Field Photometry

1989 ◽  
Vol 8 ◽  
pp. 651-656
Author(s):  
Peter Linde
Keyword(s):  
High Precision ◽  
List Type ◽  
Point Spread Functions ◽  
Error Sources ◽  
Point Spread ◽  
Spread Function ◽  
Star Group ◽  
Local Background ◽  
Definition Of

AbstractMethods have been developed for high precision photometry in crowded stellar fields. The procedure includes the following steps:• Determination of a two-dimensional point spread function• Definition of groups of stars with mutually overlapping images• Determination of local background for each star group• Simultaneous fitting of point spread functions, one for each star in the groupThe Lund approach emphasizes interactivity. Many fundamental procedures are facilitated by the use of an optimised image display. Extensive modelling has been done to study the influence of various error sources.

Towards a New Concept of In-Line Crankshaft Balancing by Contact Less Measurement: Process for Selecting the Best Digitizing System

2012 ◽  
Author(s):  
Alexandre Zuquete-Guarato ◽  
Charyar Mehdi-Souzani ◽  
Yann Quinsat ◽  
Claire Lartigue ◽  
Leila Sabri
Keyword(s):  
Quality Indicators ◽  
High Precision ◽  
Measurement Process ◽  
Scanning System ◽  
Specific Procedure ◽  
Measuring Systems ◽  
Accessibility Issues ◽  
Definition Of

Controlling the part’s balance of crankshafts are important issues for automotive manufacturers. Unbalance measurement is usually carried out using high-precision mechanical machines. The main objective of the present work is to replace mechanical measuring systems by a non-contact digitizing system, which permits the acquisition of the crankshaft surface. As the geometry to be measured presents a large variety of shapes and textures with accessibility issues, the definition of the best-suited scanning system related to geometrical and industrial constraints is a major issue. In this direction, the paper deals with the definition of a protocol based on quality indicators associated to the collected data to compare various digitizing systems. Those quality indicators are assessed thanks to simple artifacts measurement according to a specific procedure. The comparison protocol is applied to evaluate three triangulation based digitizing systems: Results allow us to identify well-adapted digitizing systems in relation to crankshaft balancing requirements.

Fluorescence of Tetrols, Tetrols Complexed with DNA, and Benzo[a]Pyrene-DNA Adducts in Methanol/Water Solutions

2000 ◽  
Vol 54 (2) ◽  
pp. 287-293 ◽  
Author(s):  
Paul B. Steinbach ◽  
Robert J. Hurtubise
Keyword(s):  
Dna Adducts ◽  
Fluorescence Spectra ◽  
Fluorescence Emission ◽  
Dna Bases ◽  
Hydroxyl Groups ◽  
Excitation Spectra ◽  
Fluorescence Parameters ◽  
Water Composition ◽  
Hydrolysis Products ◽  
Definition Of

Several solution fluorescence parameters were acquired for the four tetrol hydrolysis products of benzo[ a]pyrene-trans-7,8-dihydrodiol-9,10-epoxide (BPDE)-DNA adducts, tetrols complexed with DNA, and BPDE-DNA adducts in several methanol/water solvents. The relative polarity of the environment for the tetrols and BPDE-DNA adducts was determined by using a modified definition of the R value that is commonly employed for pyrene. The R values for the tetrols and BPDE-DNA adducts were calculated by obtaining the ratios of the intensities of the two major fluorescence emission bands at 380 and 400 nm ( I380/ I400). The positions of the hydroxyl groups on the hydroaromatic ring of the tetrols were compared in reference to the R values and the changes in the R values as a function of methanol/water composition. This approach resulted in a method for determining whether the hydroxyl groups in the 9 and 10 positions were on the same side or opposite sides of a hydroaromatic ring. The tetrols intercalated between the DNA bases showed quite different fluorescence spectra compared to tetrols not complexed with DNA. Also, the quasi-intercalated BPDE-DNA adducts gave significant changes in the R values with an increase in methanol in the solvent, and excitation spectra showed large shifts and changes in shape with an increase in methanol. The approaches developed provide unique structural and polarity information on tetrols and BPDE-DNA adducts.

A taxonomic review of the Palaearctic Tetramorium ferox species-complex (Hymenoptera, Formicidae)

Zootaxa ◽  
2010 ◽  
Vol 2401 (1) ◽  
pp. 1 ◽  
Author(s):  
SÁNDOR CSŐSZ ◽  
ANDREAS SCHULZ
Keyword(s):  
High Precision ◽  
Species Complex ◽  
External Morphology ◽  
Taxonomic Review ◽  
Definition Of

This revision treats the members of the Palaearctic Tetramorium ferox species-complex on the basis of external morphology and using high precision morphometrics. With this approach we recognize five taxa and six synonyms: Tetramorium aegeum Radchenko, 1992b; Tetramorium densopilosum Radchenko & Arakelian, 1990; Tetramorium diomedeum Emery, 1908; Tetramorium ferox Ruzsky, 1903; and Tetramorium feroxoide Dlussky & Zabelin, 1985. Tetramorium laevior Menozzi, 1936 is synonymized with Tetramorium diomedeum. Tetramorium confinis Radchenko & Arakelian, 1990, Tetramorium perspicax Radchenko, 1992b, and Tetramorium ferox subsp. silhavyi Kratochvil, 1941 are synonymized with Tetramorium ferox. Tetramorium bursakovi Radchenko, 1992a is synonymized with Tetramorium feroxoide. A key and redescriptions for workers and gynes are given. SEM photos for workers and gynes of each species are provided. A morphology-based definition of the species complex for workers, gynes and males is also provided.

scholarly journals A New Compensation Method for DRR of a Roll-Pitch Seeker Based on ESO

2021 ◽  
Vol 2021 ◽  
pp. 1-19
Author(s):  
Yue Li ◽  
Wei Li ◽  
Xiaodong Liu ◽  
Qunli Xia
Keyword(s):  
High Precision ◽  
High Speed ◽  
Rejection Rate ◽  
Compensation Method ◽  
Guidance System ◽  
New Method ◽  
Filter Method ◽  
Kalman Filter Method ◽  
Definition Of ◽  
Miss Distance

We propose a new DRR (Disturbance Rejection Rate) compensation method of a roll-pitch seeker based on ESO (extended state observer). The characteristics of a roll-pitch seeker and the DRR definition of two frames of a roll-pitch seeker are analyzed. The influence of different interference torques and different frequency bandwidths on the compensation effect is analyzed. Modeling and simulation of the guidance system of a roll-pitch seeker with the parasitic loop of DRR are carried out. Influence of the new DRR compensation method on dimensionless miss distance is analyzed. Mathematical simulation is established to compare the new ESO-based DRR compensation method with the existing methods such as the feedforward method and Kalman filter method. The analysis and simulation results show that the new ESO-based DRR compensation method has the advantages of high precision, good applicability, and easy adjustment, and the new method can effectively reduce the dimensionless miss distance with different types of input errors. The research of this proposed new method can provide a reference for the latest generation air-to-air missile operations in a high-altitude and high-speed environment and the high-precision research of a roll-pitch seeker.

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