scholarly journals Groundwater Chemistry and Overpressure Evidences in Cerro Prieto Geothermal Field

Geofluids ◽  
2017 ◽  
Vol 2017 ◽  
pp. 1-13 ◽  
Author(s):  
Ivan Morales-Arredondo ◽  
María Aurora Armienta ◽  
Nuria Segovia
Keyword(s):  
Water Samples ◽  
Evolutionary Process ◽  
Geothermal Field ◽  
Geological Characteristics ◽  
Physical Chemical ◽  
Geothermal Wells ◽  
Cerro Prieto ◽  
Diagenetic Evolution ◽  
Brine Evolution

In order to understand the geological and hydrogeological processes influencing the hydrogeochemical behavior of the Cerro Prieto Geothermal Field (CP) aquifer, Mexico, a characterization of the water samples collected from geothermal wells was carried out. Different hydrochemical diagrams were used to evaluate brine evolution of the aquifer. To determine pressure conditions at depth, a calculation was performed using hydrostatic and lithostatic properties from CP, considering geological characteristics of the study area, and theoretical information about some basin environments. Groundwater shows hydrogeochemical and geological evidences of the diagenetic evolution that indicate overpressure conditions. Some physical, chemical, textural, and mineralogical properties reported in the lithological column from CP are explained understanding the evolutionary process of the sedimentary material that composes the aquifer.

Geothermal Geology Characteristic and Origin Analysis of Shilin Basin in Yunnan Province

2013 ◽  
Vol 779-780 ◽  
pp. 1449-1452
Author(s):  
Xiao Ling Zhang ◽  
Hong Zhan Liu ◽  
Kang Chen
Keyword(s):  
Yunnan Province ◽  
Geothermal Field ◽  
Geothermal Water ◽  
Water Runoff ◽  
Deep Circulation ◽  
Thermal Groundwater ◽  
Geological Characteristics ◽  
Chemical Type ◽  
Geothermal Wells ◽  
Development And Utilization

based on geothermal anomalies and geothermal wells of Shilin basin, the structure of geothermal reservoirs, geothermal geological characteristics and hydrochemistry of thermal groundwater are examined. Geothermal reservoir of the geothermal field is Proterozoic Sinian dolomite and dolomitic limestone. Characteristic of geothermal water runoff and geothermal field are controlled by Jiuxiang fracture and Niutoushan ancient mainland. The drillings data shows that the temperature gradient is 1.5-4.8°C/100m. Deep circulation is the main origin of geothermal water. The chemical type of geothermal water is HCO3-Ca, and high silicic acid content. The geothermal water supply is limited from the hydrogeological conditions; we should control the development and utilization.

scholarly journals Casing failure identification of long-abandoned geothermal wells in Field Dieng, Indonesia

2019 ◽  
Vol 7 (1) ◽  
Author(s):  
B. T. H. Marbun ◽  
R. H. Ridwan ◽  
S. Z. Sinaga ◽  
B. Pande ◽  
B. A. Purbantanu
Keyword(s):  
Oil And Gas ◽  
Initial Study ◽  
Geothermal Field ◽  
Production Wells ◽  
Geothermal Wells ◽  
Abandoned Wells ◽  
Historical Data Analysis ◽  
Gas Standards ◽  
Identification And Characterization

Abstract Integrity issues create challenges for maintaining the production of mature geothermal wells. Such problems are likely to occur in wells designed according to oil and gas standards, without considering the extreme geothermal environment. PT Geo Dipa Energi as the operator of the Dieng geothermal field, one of the longest operated in Indonesia, has experienced this difficulty since acquiring the field. Almost half of the production wells have been abandoned because of casing issues. To increase production, the operator plans to reactivate wells that have been previously abandoned. An initial study was performed to assess the technical feasibility of reactivating wells at Dieng; it included the development of a well assessment methodology including casing design, comprising historical data analysis, identification of well problems, and investigation of well integrity. The study focused on the identification and characterization of two abandoned wells, HCE9B and HCE28B, current casing conditions, limitations, and challenges to perform a well intervention and workover which is realistic, measurable, economic, and technically feasible. The result of this study will be applicable for casing design for future wells.

Acanthamoeba Species in Tap Water, Egypt

2017 ◽  
Vol 9 (1) ◽  
Author(s):  
Ahmad Z Al-Herrawy ◽  
Mohamed A Marouf ◽  
Mahmoud A. Gad
Keyword(s):  
Water Samples ◽  
Tap Water ◽  
Pcr Analysis ◽  
Pulmonary Infections ◽  
Clinical Syndromes ◽  
Acanthamoeba Species ◽  
Amebic Encephalitis ◽  
Acanthamoeba Culbertsoni ◽  
Autumn And Winter

Genus Acanthamoeba causes 3 clinical syndromes amebic keratitis, granulomatous amebic encephalitis and disseminated granulomatous amebic disease (eg, sinus, skin and pulmonary infections). A total of 144 tap water samples were collected from Giza governorate, Egypt. Samples were processed for detection of Acanthamoeba species using non-nutrient agar (NNA) and were incubated at 30oC. The isolates of Acanthamoeba were identified to species level based on the morphologic criteria. Molecular characterization of the Acanthamoeba isolates to genus level was performed by using PCR. The obtained results showed that the highest occurrence percentage of Acanthamoeba species in water samples was observed in summer season (38.9%), then it decreased to be 30.6% in spring and 25% in each of autumn and winter. PCR analysis showed that 100% of 43 Acanthamoeba morphologically positive samples were positive by genus specific primer. In the present study eight species of Acanthamoeba can be morphologically recognized namely Acanthamoeba triangularis, Acanthamoeba echinulata, Acanthamoeba astronyxis, Acanthamoeba comandoni, Acanthamoeba griffini, Acanthamoeba culbertsoni, Acanthamoeba quina and Acanthamoeba lenticulata. In conclusion, the most common Acanthamoeba species in tap water was Acanthamoeba comandoni

Chlorinated Organics in Nearshore Waters and Tributaries of the St. Clair River

1986 ◽  
Vol 21 (3) ◽  
pp. 344-350 ◽  
Author(s):  
Barry G. Oliver ◽  
Klaus L.E. Kaiser
Keyword(s):  
United States ◽  
Suspended Sediment ◽  
Waste Disposal ◽  
Large Volume ◽  
Water Samples ◽  
Chemical Properties ◽  
Low Level ◽  
Chemical Company ◽  
Physical Chemical ◽  
The Individual

Abstract The concent rat ions of hexachloroethane (HCE), hexachlorobutadiene (HCBD), pentachlorobenzene (QCB), hexachlorobenzene (HCB) and octachlorostyrene (OCS) in large volume water samples show that the major sources of these chemicals to the St. Clair River are Dow Chemical Company effluents and, to a lesser degree, Sarnia’s Township ditch which drains one of Dow’s waste disposal sites. Tributaries entering the river on both sides of the Canada/United States border contain measurable concentrations of these chemicals indicating low level contamination throughout the area. The degree of water/suspended sediment partitioning of the chemicals (Kp) was studied. Kp values for the individual chemicals changed in a manner consistent with changes in their physical-chemical properties.

scholarly journals Editorial for Special Issue “Historical Mineral Pigments”

Minerals ◽  
2021 ◽  
Vol 11 (3) ◽  
pp. 237
Author(s):  
Carolina Cardell ◽  
Jose Santiago Pozo-Antonio
Keyword(s):  
Chemical Characterization ◽  
Glass Enamel ◽  
Special Issue ◽  
High Quality ◽  
Physical Chemical ◽  
Scientific Disciplines ◽  
Natural And Synthetic

The physical–chemical characterization of natural and synthetic historical inorganic and mineral pigments, which may be found embedded in paintings (real or mock-ups), glass, enamel, ceramics, beads, tesserae, etc., as well as their alteration under different decay scenarios, is a demanding line of investigation. This field of research is now both well established and dynamic, as revealed by the numerous publications in high-quality journals of varied scientific disciplines. [...]

Chemistry of Water Collected from an Unventilated Drift, Yucca Mountain, Nevada

2006 ◽  
Vol 985 ◽  
Author(s):  
Brian D Marshall ◽  
Thomas A. Oliver ◽  
Zell E. Peterman
Keyword(s):  
Pore Water ◽  
Water Samples ◽  
Conveyor Belt ◽  
Yucca Mountain ◽  
Seepage Water ◽  
Biologic Activity ◽  
Co2 Concentrations ◽  
The Cross ◽  
Chemical Conditions

AbstractWater samples (referred to as puddle water samples) were collected from the surfaces of a conveyor belt and plastic sheeting in the unventilated portion of the Enhanced Characterization of the Repository Block (ECRB) Cross Drift in 2003 and 2005 at Yucca Mountain, Nevada. The chemistry of these puddle water samples is very different than that of pore water samples from borehole cores in the same region of the Cross Drift or than seepage water samples collected from the Exploratory Studies Facility tunnel in 2005. The origin of the puddle water is condensation on surfaces of introduced materials and its chemistry is dominated by components of the introduced materials. Large CO2 concentrations may be indicative of localized chemical conditions induced by biologic activity.

Heavy metal sources and anthropogenic enrichment in the environment around the Cerro Prieto Geothermal Field, Mexico

Geothermics ◽  
2018 ◽  
Vol 72 ◽  
pp. 170-181 ◽  
Author(s):  
Z.I. González-Acevedo ◽  
M.A. García-Zarate ◽  
E.A. Núñez-Zarco ◽  
B.I. Anda-Martín
Keyword(s):  
Heavy Metal ◽  
Geothermal Field ◽  
Metal Sources ◽  
Cerro Prieto ◽  
Heavy Metal Sources
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