Subsurface fault detection using seismic data for hazardous‐waste‐injection well permitting: An example from St. John the Baptist Parish, Louisiana

Geophysics ◽  
1995 ◽  
Vol 60 (2) ◽  
pp. 468-475 ◽  
Author(s):  
Edward V. Zinni
Keyword(s):  
Drinking Water ◽  
Hazardous Waste ◽  
Cross Sections ◽  
Vertical Migration ◽  
Seismic Data ◽  
Normal Faults ◽  
Well Log ◽  
John The Baptist ◽  
Freshwater Aquifers

The Covington aquifer is used as a major source of drinking water for east St. John the Baptist Parish, Louisiana. A recent subsurface geologic study in Herbert and Hanson (1991) suggested that the Covington aquifer might communicate hydrologically with two hazardous‐waste‐injection reservoirs, thus putting the fresh‐water Covington aquifer in danger of contamination. A case history shows how seismic‐reflection and electric well‐log data were used to determine the possibility of hydrologic communication between the Covington aquifer and the hazardous‐waste‐injection reservoirs. Cross‐sections, net‐sand isopachs, and structure maps are constructed for three hazardous‐waste‐injection reservoirs and the Covington aquifer. Four previously undetected normal faults bisect the three injection reservoirs and the Covington aquifer. The presence of these faults significantly increases the possibility of communication by acting as conduits and allowing vertical migration of fluids along the fault planes, or by causing juxtaposition of sand against sand and allowing leakage to occur across the fault planes. In addition, the upper injection reservoir is part of a fluvial system that occasionally scours down into the Covington aquifer, depositing sand from the injection reservoir interval directly on the Covington aquifer sand. Because of this stratigraphic contact, the injection reservoir is possibly in hydrologic communication with the Covington aquifer. The injection of liquid‐hazardous‐waste into these reservoirs could jeopardize not only the water quality of the Covington aquifer, but possibly the quality of other shallow freshwater aquifers, should vertical migration occur along the fault planes. Without the use of seismic data, the risk of contaminating underground sources of drinking water would not have been properly assessed.

On: “Subsurface fault detection using seismic data for hazardous‐waste‐injection well permitting: An example from St. John the Baptist Parish, Louisiana” by E. V. Zinni (March‐April 1995 GEOPHYSICS, 60, p. 468–475)

Geophysics ◽  
1997 ◽  
Vol 62 (1) ◽  
pp. 381-383
Author(s):  
Don L. Warner
Keyword(s):  
Water Quality ◽  
Structural Geology ◽  
Fault Detection ◽  
Hazardous Waste ◽  
Seismic Data ◽  
Injection Well ◽  
John The Baptist ◽  
Freshwater Aquifers

Zinni (1995) has studied the stratigraphy and structural geology of injection reservoirs and aquifers in the vicinity of the DuPont Ponchartrain Works plant and has concluded that “The injection of liquid hazardous waste into the 2440-, 1430-m, and 1130-m injection reservoirs could jeopardize not only the water quality of the Covington aquifer, but possibly other shallow freshwater aquifers….”

Integrated geological and geophysical interpretation case study, and Lamé rock parameter extractions using AVO analysis on the Blackfoot 3C‐3D seismic data, southern Alberta, Canada

Geophysics ◽  
2002 ◽  
Vol 67 (1) ◽  
pp. 27-37 ◽  
Author(s):  
Jocelyn Dufour ◽  
Jason Squires ◽  
William N. Goodway ◽  
Andy Edmunds ◽  
Ian Shook
Keyword(s):  
Cross Sections ◽  
Seismic Data ◽  
Oil And Gas ◽  
Well Log ◽  
Amplitude Variation With Offset ◽  
Incised Valley ◽  
Geophysical Interpretation ◽  
Porous Sandstone ◽  
Incised Valleys ◽  
Geological Facies

Blackfoot field, southeast of Calgary, Alberta, Canada, has produced oil and gas from a Glauconitic compound incised‐valley system. The Glauconitic compound incised valley has three cycles of incision and valley fill: lower, lithic, and upper incised valleys. The upper and lower incised valleys are the main reservoirs. The geophysical interpretation of compressional PP‐seismic data resulted in the definition of the compound‐valley extent, and in the mapping of the upper and lower incised valleys. A stratigraphic well‐log template was built using the most significant lithological information and well logs. To integrate both geological and geophysical interpretations, the well log cross‐sections and corresponding depth‐converted seismic were superimposed. Furthermore, a detailed geological facies interpretation of the upper and lower incised valleys was undertaken and incorporated. A good correlation was found between the interpreted geological facies and the seismic data response. Information about the nature of the fill within the compound valley was gained from the integration of the PP‐ and PS‐wave interpretations. However, this is limited to Vp/Vs analyses on given intervals. Amplitude‐variation‐with‐offset analysis of the PP‐data was run to discriminate lithology and pore‐fluid saturates. The products of the Lamé rock parameters, incompressibility (λ) and rigidity (μ), with density (ρ) were extracted from seismic inversions for P‐ and S‐impedances. The extraction of λ ρ and μρ showed the presence of gas‐bearing porous sandstone within the Glauconitic incised‐valley system.

scholarly journals Structures of the Kirkuk Embayment, northern Iraq: Foreland structures or Zagros Fold Belt structures?

GeoArabia ◽  
2010 ◽  
Vol 15 (4) ◽  
pp. 147-188 ◽  
Author(s):  
W. Norman Kent
Keyword(s):  
Cross Sections ◽  
Seismic Data ◽  
Field Data ◽  
Fault System ◽  
Normal Faults ◽  
Fold Belt ◽  
Potential Field Data ◽  
Northern Iraq ◽  
Fault Propagation Fold ◽  
Zagros Orogen

ABSTRACT Several anticlines in northern Iraq and Syria have been studied through the construction of balanced and restored cross sections. Based upon structural analysis, each of the studied anticlines is a fault-propagation fold that developed due to Zagros-related, recent inversion of much older normal faults. Studies on the Iranian part of the Zagros Fold Belt have suggested that the regional variation in the character of the fold belt is related to weak detachment surfaces in the stratigraphic section, primarily the decollement developed near the top of the Hormuz Salt where the salt is present. No evidence for Hormuz Salt has been found within the Kirkuk Embayment, and although detachment surfaces contribute the area’s structural character, the prominent folds seem to originate mainly from basement involved faults. Two distinct inversion structural trends exist: E-W system and a NW system of inverted grabens. In Syria, several of the faults associated with the EW-trending system cut the basement on seismic data and have stratigraphic relationships indicating that their displacement originated in the Neoproterozoic. In Iraq, the thicker sedimentary section did not allow the deep parts of the fault systems to be imaged on the available seismic. While the NW fault system of inverted normal faults could be linked to the Zagros Orogen by a decollement surface in the sedimentary section, regional relationships and potential-field data suggest that this trend also is basement involved and has a Neoproterozoic origin.

Inversion structures in a foreland domain: Seismic examples from the Italian Adriatic Sea

2015 ◽  
Vol 3 (4) ◽  
pp. SAA161-SAA176 ◽  
Author(s):  
Paolo Pace ◽  
Vittorio Scisciani ◽  
Fernando Calamita ◽  
Robert W. H. Butler ◽  
David Iacopini ◽  
...  
Keyword(s):  
Cross Sections ◽  
Seismic Data ◽  
Adriatic Sea ◽  
Forward Modeling ◽  
Normal Faults ◽  
Regional Structure ◽  
Thrust Belts ◽  
Structural Inversion ◽  
Half Graben ◽  
Adriatic Region

Positive structural inversion within foreland domains ahead of thrust belts can create structures with significant hydrocarbon potential in mature and underexplored areas. Within this context, the Adriatic region represents a well-established hydrocarbon province constituting a foreland domain bounded by the Apennines, Southern Alps, and Dinaric fold-and-thrust belts. Newly reprocessed regional 2D seismic data and a renewed exploration interest in the area motivate a reappraisal of the regional structure and stratigraphy of the deformed Central Adriatic region of Italy (i.e., the Mid-Adriatic Ridge). Here, we developed and discussed examples of inversion structures that have different structural styles. The structural interpretations displayed on time-to-depth converted profiles had been validated by 2D structural-kinematic balancing and forward modeling. Our aim was to better define the geometry, style, and timing of the analyzed inversion-related folds. Positive inversion structures appeared locally as asymmetric harpoon-shaped anticlines riding over high-angle blind thrusts. More commonly, inversion structures were symmetric anticlines formed above conjugate faults. Retrodeformed cross sections showed that positive inversion involved symmetric graben and asymmetric half-graben that originated during the Triassic and Jurassic. That these inversion structures developed during basement-involved thrusting, as suggested for the Adriatic in general, was consistent with forward modeling. Regionally, the contractional structures belonging to the Mid-Adriatic Ridge can be explained in terms of intraplate deformation that chiefly acted through reactivation of Mesozoic normal faults.

Appraisal of Microbiological Quality of Food with Respect to Drinking Water in Punjab

2011 ◽  
Vol 4 (6) ◽  
pp. 1-3
Author(s):  
Pandove G Pandove G ◽  
◽  
Sahota S Sahota S
Keyword(s):  
Drinking Water ◽  
Microbiological Quality ◽  
Quality Of Food

Gender and Regional Differences in the Life Expectancy in Russia

2020 ◽  
Vol 27 (1) ◽  
pp. 106-120 ◽  
Author(s):  
L. A. Rodionova ◽  
E. D. Kopnova
Keyword(s):  
Drinking Water ◽  
Alcohol Consumption ◽  
Life Expectancy ◽  
Gender Gap ◽  
Poor Quality ◽  
Living Conditions ◽  
Regional Differentiation ◽  
Russian Regions ◽  
Poor Nutrition

The relevance of the chosen topic is closely related to the development of a system for monitoring the implementation of the May Presidential Decree (2018) to increase life expectancy and improve the quality of life of the population. It has been stated that despite the positive dynamics of life expectancy over the past decade, Russia still has a huge regional differentiation (16,6 years for women, 18,2 years for men in 2016) and an average gender gap - 10,6 years. The choice of factors affecting the gender gap in life expectancy in Russian regions is supported by a conclusion most common in foreign studies that climatic conditions, living conditions, the quality of food and drinking water, alcohol consumption are essential components of public health and life expectancy.The article provides an overview of studies on assessment factors of life expectancy, presents the authors’ approach to identifying gender gaps in life expectancy, living conditions, and lifestyle affecting the indicator of life expectancy. The paper presents the results of a comparative analysis of gender gap in life expectancy in Russia and foreign countries. The paper studies the correlation between living conditions and lifestyle, and life expectancy.Classification of the regions by the life expectancy at birth for men and women is an important component of this study. The authors used Rosstat data for 2016 and the k-means method to select three clusters of Russian regions taking into account gender, living conditions and lifestyle. The paper identifies similar health problems of the regions that are associated with alcohol consumption, poor nutrition and poor quality of drinking water, poor housing and living conditions. The lowest life expectancy rates for men and women are recorded in regions of the 1st cluster (Jewish Autonomous Region, Republic of Tuva, Chukotka Autonomous Area). High mortality rates are a result of external causes. There is a poor quality of drinking water and poor nutrition, excessive alcohol consumption, and inadequate housing conditions.Based on the obtained results were determined possible reserves for reducing the gender and regional differentiation of life expectancy.

Microbiological quality of residues from drinking water preparation

1995 ◽  
Vol 31 (5-6) ◽  
pp. 75-79 ◽  
Author(s):  
M. Würzer ◽  
A. Wiedenmann ◽  
K. Botzenhart
Keyword(s):  
Waste Water ◽  
Escherichia Coli ◽  
Pseudomonas Aeruginosa ◽  
Drinking Water ◽  
Water Treatment ◽  
Pathogenic Bacteria ◽  
Waste Water Treatment ◽  
Microbiological Quality ◽  
Detection Limits

In Germany the application of procedures such as flocculation and filtration in the preparation of drinking water results in the annual production of an estimated 500,000 t of sediments and sludges. Some of these residues have a potential for being reused, for example in agriculture, forestry, brickworks or waste water treatment. To assess the microbiological quality of residues from waterworks methods for the detection of enterobacteria, Escherichia coli, Salmonella, Pseudomonas aeruginosa, Legionella, poliovirus, Ascaris suis eggs and Cryptosporidium have been evaluated regarding their detection limits and were applied to various residues from German waterworks. Results show that sediments and sludges may contain pathogenic bacteria, viruses and protista. When residues from waterworks are intended to be reused in agriculture or forestry the microbiological quality should therefore be considered.

Barcelona's water supply improvement: the brine collector of the Llobregat river

1994 ◽  
Vol 30 (10) ◽  
pp. 221-227 ◽  
Author(s):  
Jordi Martín-Alonso
Keyword(s):  
Drinking Water ◽  
Surface Water ◽  
Treatment Plant ◽  
Water Treatment Plant ◽  
Salt Mine ◽  
Water Production ◽  
Public Work ◽  
Drinking Water Production ◽  
Llobregat River

The Llobregat is a 156 km long river, which supplies 35% of the Barcelona's drinking water needs from the Sant Joan Despí Water Treatment Plant. Since the establishment of the Salt Mine Works in the Llobregat basin in 1923, a progressive salinization of the water sources has been recorded. The operation of the Brine Collector, as a public work carried out by Aigües de Barcelona (AGBAR), started in 1989; it enabled a very significant improvement in the quality of the surface water used for drinking-water production.

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