scholarly journals The measurement and interpretation methodology of resistivity logs affected by the Groningen effect – a Polish case study

2020 ◽  
Vol 46 (1) ◽  
pp. 35
Author(s):  
Stanislaw Baudzis ◽  
Jadwiga A. Jarzyna ◽  
Edyta Puskarczyk
Keyword(s):  
High Resolution ◽  
Reference Electrode ◽  
Well Log ◽  
Standard Measurement ◽  
Resistivity Data ◽  
Resistivity Logs ◽  
History Of ◽  
Formation Resistivity

True formation resistivity Rt measurement is one of the fundamental logs in the calculation of hydrocarbon resources. That is why it is very important to have the most reliable resistivity data possible. In this paper, the various outcomes obtained by Polish well log analysts and engineers for the proper determination of hydrocarbon saturation in the Main Dolomite deposits in the Polish Lowland are presented. The long history of efforts directed to make proper exploitation decisions in wells where the Groningen effect has been observed is illustrated, starting with the standard measurement and interpretational approach, through the modified construction of a reference electrode in a Laterolog device and ending with an examination of HRLA (High-Resolution Laterolog Array) or Array Compensated Resistivity Tool) ACRt results. The processing of resistivity logs with the special Poprawki software is included.

High Resolution Correlation of Sequence Stratigraphy to Stipulate Further Hidrocarbon Prospect in A Mature Field : Case Study of Limau Field, South Sumatera Basin

2021 ◽  
Author(s):  
P. Suseno
Keyword(s):  
High Resolution ◽  
Depositional Environment ◽  
Middle Miocene ◽  
Well Log ◽  
Field Development ◽  
Sequence Stratigraphic ◽  
Sediment Deposits ◽  
Order Sequence ◽  
Rms Amplitude

The Limau Trend Structure is located in the South Sumatera Basin of Indonesia. The main reservoir in this field is the Talang Akar Formation which is deposited in a fluvial complex that changes gradually into a shallow marine depositional environment in a transgressive phase of 3rd order sequence. The sediment deposit was developed from the Late Oligocene to Middle Miocene. A high-resolution sequence stratigraphic interpretation of the 3rd to 4th order was interpreted from the subsurface data (core and well log) combined with the outcrop observation that resulted in a comprehensive input for building a geological model. Based on this framework, the transgressive phase series in each parasequence set produces restricted sediment deposits that have the potential for stratigraphic traps. On the other hand, the amalgamated sands of the regression phase will be related to the structural traps. The RMS amplitude volume from seismic multi attributes analysis shows that the facies is changing with the reservoir distribution. The seismic attributes such as VpVs indicate a hydrocarbon presence. The combination of all data reveals that the stratigraphic traps are the main trapping mechanism in the Limau field. The field development works are now focusing in the northern area, on the transgressive phase of the 4th order parasequence set. It composes of a fluvial complex cycle that has a high potential for a virgin geometrically restricted (lense shaped) reservoir rather than well-connected and sand-rich maximum regressive reservoir facies. This transgressive phase reservoir of parasequence set (4th order) at the Northern Belimbing Field was proven by 2 (two) recently drilled wells. Both wells showed very good hydrocarbon indications and produced oil with an initial rate of 174 bopd & 1265 bopd respectively. These results confirmed the oil prospectivity within the transgressive phase of the 4th order parasequence set at the Northern Limau Trend. The initial resources estimation in the Northern Belimbing Field contains 65 MMBO. This is very promising for the development of the Belimbing Field, Limau Trend.

scholarly journals Determination of rice canopy growth based on high resolution satellite images: a case study using RapidEye imagery in Korea

2016 ◽  
Vol 3 (4) ◽  
pp. 631-645 ◽  
Author(s):  
Mijeong Kim ◽  
◽  
Seungtaek Jeong ◽  
Jong-min Yeom ◽  
Hyun-ok Kim ◽  
...  
Keyword(s):  
High Resolution ◽  
Satellite Images ◽  
High Resolution Satellite Images

scholarly journals Greenequality - Determination of Socio-Spatial Urban Landscape Typology

Prostor ◽  
2018 ◽  
Vol 26 (2 (56)) ◽  
pp. 258-267
Author(s):  
Stjepko Golubić ◽  
Bojana Bojanić Obad Šćitaroci
Keyword(s):  
Urban Landscape ◽  
Spatial Inequality ◽  
Study Analysis ◽  
Case Study Analysis ◽  
History Of ◽  
Mutual Comparison ◽  
Selection Of

This paper explores the history of limitations in use and accessibility of city landscapes. Case study analysis covers six examples of parks and residential square gardens. Mutual comparison offers a new socio-spatial urban landscape typology, which precedes the selection of models of rehabilitation for city landscapes. The results show that designed landscapes are used not only to mitigate, but also to intensify socio-spatial inequality.

Formation constants for selected organo—metal (Al3+, Fe3+)—phosphate complexes

1985 ◽  
Vol 63 (12) ◽  
pp. 3357-3366 ◽  
Author(s):  
Paul A. Arp ◽  
W. Lense Meyer
Keyword(s):  
Organic Acids ◽  
Aqueous Solutions ◽  
Reference Electrode ◽  
Formation Constants ◽  
Glass Electrode ◽  
Metal Phosphate ◽  
Electrode Pair ◽  
Phosphate Ions

The possible formation of organo–metal–phosphate complexes (O–M–P) in aqueous solutions is examined by potentiometric titration analysis. The complex-forming solutions contain Al3+-ions or Fe3+-ions, organic acids (salicylic, phthalic, oxalic, and citric acids) and phosphate ions. The titrations are done within the precipitation-free pH-region from 2 to 4.5 (approximately) at 25 °C under nitrogen at an ionic strength of 0.2 M KCl. The calibration of the electrode pair (glass-electrode, calomel-reference electrode) and the determination of the formation constants are facilitated by analyzing the pertinent curves with the ACBA-(Arena etal.) and MINIQUAD-(Gans etal.) computer programs. The results suggest (i) that O–M–P complexes are readily formed, and that the power of selected organic acids to form ternary mixed-ligand complexes with Al3+-ions and phosphate ions decreases in the order salycilate > citrate > oxalate > phthalate. Also, Fe3+-ions are found to be more strongly bound by salicylate and phosphate ions than Al3+-ions. The effect of O–M–P formation on the chemical speciation of Al in buffered aqueous solutions containing mineral nutrients for the growth of biological organisms is demonstrated for a special case study.

Environmental Soil and Ground Water Assessment Using High Resolution Passive Soil-Gas Samplers - Petrex Method: Methodology and Results of a Case Study Performed in Brazil

1994 ◽  
Vol 29 (8) ◽  
pp. 161-172 ◽  
Author(s):  
D. C. Gomes ◽  
M. Alarsa ◽  
M. C. Salvador ◽  
C. Kupferschmid
Keyword(s):  
High Resolution ◽  
High Resolution Mass Spectrometry ◽  
Cost Effective ◽  
Site Investigation ◽  
Soil Gas ◽  
Environmental Evaluation ◽  
Direct Sampling ◽  
Selection Of

The PETREX Passive Soil Gas Technique - applied successfully to environmental projects for 10 years - is the ideal primary investigative tool for soil and groundwater contaminations, since it is rapid, easy to apply and covers large areas. It is more sensitive and cost effective than other methods (e.g. active soil gas techniques). Passive collectors combined with high-resolution mass spectrometry permit direct mid reliable identification of over 9,000 volatile (VOCs) and semi-volatile organic compounds (SVOCs). PETREX is capable of providing comprehensive problem delineation during the initial stages of the site investigation, allowing for greater cost effectiveness in the planning of remediation programs and in the selection of appropriate monitoring well locations and other methodologies which may be needed to complete the environmental evaluation. PETREX therefore finds wide use in the investigation of contaminants, in the determination of pollution sources, as well as in audits connected to real estate transactions. This paper describes a case-study developed in Brazil, showing PETREX's usefulness and its correlation with soil and groundwater contamination plumes established from traditional direct sampling methods.

scholarly journals THE USE OF HIGH RESOLUTION IMAGES TO EVALUATE THE EVENT OF FLOODS AND TO ANALYSIS THE RISK REDUCTION CASE STUDY: KAMPUNG PULO, JAKARTA

2017 ◽  
Vol 11 (2) ◽  
pp. 127
Author(s):  
M. Rokhis Khomarudin ◽  
. Suwarsono ◽  
Dini Oktavia Ambarwati ◽  
Gunawan Prabowo
Keyword(s):  
High Resolution ◽  
Risk Reduction ◽  
Aerial Photography ◽  
Risk Level ◽  
Vertical Evacuation ◽  
Aerial Vehicle ◽  
High Resolution Images ◽  
Evacuation Plan

The flood hit Kampung Pulo region in almost every year. This disaster has caused the evacuation of some residents in weeks. Given the frequency of occurrence is quite high in the region it is necessary to do a study to support disaster risk reduction. This study aimed to evaluate the incidence of flooding that occurred in Kampung Pulo in terms of topography, river conditions, characteristics of the building, and socioeconomic conditions. Methods of study include geomorphology analysis, identification of areas of stagnant, the estimated number of people exposed, the estimation of socio-economic conditions of the population, as well as determining the location of an evacuation. The data used is high-resolution remote sensing imagery is QuickBird and SPOT-6. It also used the results of aerial photography using Unmanned Aerial Vehicle (UAV). Aerial photography was conducted on January 18, 2013, which is when the serious flooding that inundated almost the entire region of Kampung Pulo. Information risk level of buildings and population resulting from this study were obtained by using GIS. The results obtained from this study can be used to develop recommendations and strategies for flood mitigation in Kampung Pulo, Jakarta. One of them is the determination of the location for vertical evacuation plan in the affected areas.

High-resolution microscopy of twin boundaries in gold

1987 ◽  
Vol 45 ◽  
pp. 260-261
Author(s):  
William Krakow ◽  
David A. Smith
Keyword(s):  
High Resolution ◽  
Specimen Preparation ◽  
Gold Films ◽  
Boundary Area ◽  
Transmission Electron ◽  
Recent Developments ◽  
Tilt Boundaries ◽  
High Resolution Microscopy ◽  
Twist Boundaries

Recent developments in specimen preparation, imaging and image analysis together permit the experimental determination of the atomic structure of certain, simple grain boundaries in metals such as gold. Single crystal, ∼125Å thick, (110) oriented gold films are vapor deposited onto ∼3000Å of epitaxial silver on (110) oriented cut and polished rock salt substrates. Bicrystal gold films are then made by first removing the silver coated substrate and placing in contact two suitably misoriented pieces of the gold film on a gold grid. Controlled heating in a hot stage first produces twist boundaries which then migrate, so reducing the grain boundary area, to give mixed boundaries and finally tilt boundaries perpendicular to the foil. These specimens are well suited to investigation by high resolution transmission electron microscopy.

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