地球科学国际期刊(英文)最新文献_第2页

Integrated Modelling and Reservoir Characterization of Ataga Field, Niger Delta Basin, Nigeria 尼日利亚尼日尔三角洲盆地Ataga油田综合建模与储层表征

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.145024

Jerry Danwazan, K. Egunjobi, Richard Olorunfemi Akinwande

{"title":"Integrated Modelling and Reservoir Characterization of Ataga Field, Niger Delta Basin, Nigeria","authors":"Jerry Danwazan, K. Egunjobi, Richard Olorunfemi Akinwande","doi":"10.4236/ijg.2023.145024","DOIUrl":"https://doi.org/10.4236/ijg.2023.145024","url":null,"abstract":"Integrated modelling, well correlation and petrophysical analysis were per-formed to characterize the reservoirs for optimum hydrocarbon correlation using 3-D seismic reflection data and suites of well logs from Ataga 5, 7, 10 and 11 wells respectively in Ataga field, shallow offshore, Niger Delta Basin, Nigeria. The study revealed the presence of two viable hydrocarbon bearing reservoirs, AT1 and AT2 and the average values of porosity, permeability, water saturation, hydrocarbon saturation, Net to Gross (NTG) and volume of shale are in the ranges of 15% - 77%, 44.5% - 75.5%, 25.5% - 85%, 15% - 75.5%, 0.70 - 0.88 and 0.11 - 0.38 respectively which goes further to show that the both reservoirs have fair characteristics that are suggestive of the presence of hydrocarbon accumulation. It can therefore be deduced that the permeability values are reflective of fair interconnectivity of pore spaces of sands within the well areas and their ability to transmit fluids, the depth and depth structural map generated for the horizons and structures shows that the most dominant trapping mechanism in the area under study is the crescentic growth fault and the rollover anticlines trending in the Northwest-Southeast direction and from the volumetric analysis. It can be deduced that the recoverable gas for AT1 and AT2","PeriodicalId":58825,"journal":{"name":"地球科学国际期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"70693147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Investigating the Long-Term Relationship between Aerosol Optical Thickness and Land Use/Cover Change in Guangxi Coastal Cities, China 广西沿海城市气溶胶光学厚度与土地利用/覆被变化的长期关系研究

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.146028

Shiheng Cheng, Xuemei Zhong, Xiang-ling Tang, Aofeng Wang, Haili Long

引用次数: 0

Assessment of the Spectral Decomposition Techniques in the Evaluation of Hydrocarbon Potential of “BOMS” Field, Coastal Swamp Niger Delta, Nigeria 谱分解技术在尼日利亚尼日尔三角洲沿海沼泽“BOMS”油田油气潜力评价中的应用

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.147035

C. C. Ugbor, Onyebuchi Samuel Onyeabor

引用次数: 0

Comprehensive Review of Studies on Metamorphic Rocks 变质岩研究综述

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.1410052

Hakan Citak, Mustafa Coramik, Huseyin Gunes, Sabri Bicakci, Yavuz Ege

引用次数: 0

Physico-Chemical Characteristics and Heavy Metals in Groundwater Bassambiri-Nembe, Bayelsa State, Nigeria 尼日利亚巴耶尔萨州Bassambiri-Nembe地下水物理化学特征和重金属

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.1411054

Onyema Isukul Amararu, Godwin Jeremiah Udom, Richmond Uwanemesor Ideozu

{"title":"Physico-Chemical Characteristics and Heavy Metals in Groundwater Bassambiri-Nembe, Bayelsa State, Nigeria","authors":"Onyema Isukul Amararu, Godwin Jeremiah Udom, Richmond Uwanemesor Ideozu","doi":"10.4236/ijg.2023.1411054","DOIUrl":"https://doi.org/10.4236/ijg.2023.1411054","url":null,"abstract":"The study is focused on the post impact of oil spill contamination of groundwater in Bassambiri Nembe Bayelsa State. Groundwater samples were sampled from hand dug wells from eight stations including the control point for physico-chemical investigation using sterilized glass bottles. Standard methods were used for the analyses. The result of physico-chemical parameters analyzed shows that the values of the groundwater pH ranged between 5.90 - 6.35, electrical conductivity between 80.39 - 89.23 μS/cm, Salinity 23.3 - 28.69 mg/l, Turbidity 1.71 - 3.84 NTU, Biochemical Oxygen Demand (BOD) 1.12 - 1.36 mg/l, Alkalinity 8.56 - 12.12 mg/l, Total Hardness 11.8 - 14.47 mg/l and Temperature 26.1℃ - 27.3℃. Analysis of cations shows that Na ranged from 7.38 - 10.34 mg/l, K 0.26 - 0.49 mg/l, Calcium ion levels 2.56 - 3.59 mg/l and Mg 0.88 mg/l - 1.23 mg/l. The anions showed Potassium ion levels ranged from 0.01 mg/l - 0.02 mg/l, Chloride ion levels 12.29 mg/l - 15.88 mg/l, Fluoride ion levels 0.01 mg/l and Nitrates from 0.27 mg/l - 0.48 mg/l. Total Heterotopic Fungi population ranged from 15.26 - 48.55 Coliform Forming units/ml. The maximum permissible value of total coliforms in drinking water was exceeded. However, the Total Hydrocarbon Concentration (THC) across the groundwater sample points was less than 0.01 mg/l. The concentration of PAH and BTEX was 0.01 mg/l across the study area. The heavy metal concentrations in the groundwater samples were negligible with levels of 0.01 mg/l observed in the study area except for iron ranging from 0.20 - 0.56 mg/l levels above the WHO permissible limit. The physico-chemical parameters of groundwater indicate that they fall below WHO permissible limits. The cations and anions concentration indicate a stable and healthy water system which is relatively good. The groundwater system has high levels of iron in groundwater and bacterial contamination. Treatment is required to avoid acute and chronic iron overload resulting from consumption from drinking groundwater within the study area.","PeriodicalId":58825,"journal":{"name":"地球科学国际期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135609487","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Source Mechanisms of Recent Earthquakes in Southern Saudi Arabia: Detecting of New Seismic Sources 沙特阿拉伯南部近期地震的震源机制:新震源的探测

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.1410049

Ahmed Hosny, Abdullah Mousa, Khaled Yousef, Lotfy Samy, Hamada Sadallah

{"title":"Source Mechanisms of Recent Earthquakes in Southern Saudi Arabia: Detecting of New Seismic Sources","authors":"Ahmed Hosny, Abdullah Mousa, Khaled Yousef, Lotfy Samy, Hamada Sadallah","doi":"10.4236/ijg.2023.1410049","DOIUrl":"https://doi.org/10.4236/ijg.2023.1410049","url":null,"abstract":"Recently in 2020, in southern Saudi Arabia three felt earthquakes occurred in Asir region, in the Khamis Mushait, Ahad Rafidah, and AL-Shuqiq area, of magnitude 3.45, 3.1, and 3.5, respectively. The most interesting event was the earthquake that occurred in Khamis Mushait area, along a lake formed behind the Tadhah Dam (~7 km), fearing any damage to the dam’s body and the consequent destruction. Moment tensors for each event were computed for determining fault plane solutions, seismic moment, moment magnitude (Mw) and the CLVD ratio. In addition, the frequency contents in the waveforms of each event were identified. The obtained focal mechanisms represent different styles of faulting, normal movement with strike slip and strike slip with reverse. These tectonic movements on faults parallel to the Red Sea refer to the tensional forces due to the Red Sea rift system. These events occurred due to a natural tectonic movement, with considering the Khamis Mushait event as an induced event because of the lake behind the Dam. Many previous seismic hazard assessment studies have been conducted in southern Saudi Arabia without considering these recent seismic sources. Thus, our study provides new information related to detecting of new active seismic sources, which contributes to updating studies of seismic risk assessment in this region. In addition, our study pushes us to establish other additional seismic stations around these new seismic sources. This in turn will play a pivotal role in controlling seismic sources and then reassessing the seismic hazard in southern Saudi Arabia.","PeriodicalId":58825,"journal":{"name":"地球科学国际期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135008721","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Carbonatite Occurrence in Ambaji-Sendra Belt of NW Indian Shield: Evidence of Carbonatitic Magmatism in the Subduction Setting 西北印度盾构安巴吉-森德拉带碳酸盐岩赋存状态:俯冲背景下碳酸盐岩岩浆活动的证据

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.141004

S. Siddiqui, S. Fatima, Tavheed Khan, M. S. Khan

引用次数: 0

Thinking on Effective Methods of Successful Prediction of Geological Hazards in Shaanxi, China 陕西地质灾害成功预测有效方法的思考

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.143014

Chaowei Yao, Yonghong Li, Yiping He, Hui Li, Chaomei Xu, Ping Fang

引用次数: 1

A Review on Clustering Methods for Climatology Analysis and Its Application over South America 南美气候分析的聚类方法及其应用综述

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.149047

Luana Albertani Pampuch, Rogério Galante Negri, Paul C. Loikith, Cassiano Antonio Bortolozo

{"title":"A Review on Clustering Methods for Climatology Analysis and Its Application over South America","authors":"Luana Albertani Pampuch, Rogério Galante Negri, Paul C. Loikith, Cassiano Antonio Bortolozo","doi":"10.4236/ijg.2023.149047","DOIUrl":"https://doi.org/10.4236/ijg.2023.149047","url":null,"abstract":"South America’s climatic diversity is a product of its vast geographical expanse, encompassing tropical to subtropical latitudes. The variations in precipitation and temperature across the region stem from the influence of distinct atmospheric systems. While some studies have characterized the prevailing systems over South America, they often lacked the utilization of statistical techniques for homogenization. On the other hand, other research has employed multivariate statistical methods to identify homogeneous regions regarding temperature and precipitation, but their focus has been limited to specific areas, such as the south, southeast, and northeast. Surprisingly, there is a lack of work that compares various multivariate statistical techniques to determine homogeneous regions across the entirety of South America concerning temperature and precipitation. This paper aims to address this gap by comparing three such techniques: Cluster Analysis (K-means and Ward) and Self Organizing Maps, using data from different sources for temperature (ERA5, ERA5-Land, and CRU) and precipitation (ERA5, ERA5-Land, and CPC). Spatial patterns and time series were generated for each region over the period 1981-2010. The results from this analysis of spatially homogeneous regions concerning temperature and precipitation have the potential to significantly benefit climate analysis and forecasts. Moreover, they can offer valuable insights for various climatological studies, guiding decision-making processes in diverse fields that rely on climate information, such as agriculture, disaster management, and water resources planning.","PeriodicalId":58825,"journal":{"name":"地球科学国际期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135784388","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1

Obtaining 2D Soil Resistance Profiles from the Integration of Electrical Resistivity Data and Standard Penetration Test (SPT) and Light Dynamic Penetrometer (DPL) Resistance Tests—Applications in Mass Movements Studies 通过电阻率数据与标准穿透试验(SPT)和光动态穿透计(DPL)电阻测试的集成获得二维土壤电阻曲线——在质量运动研究中的应用

地球科学国际期刊(英文) Pub Date : 2023-01-01 DOI: 10.4236/ijg.2023.149045

Cassiano Antonio Bortolozo, Tatiana Sussel Gonçalves Mendes, Mariana Ferreira Benessiuti Motta, Silvio Jorge Coelho Simões, Tristan Pryer, Daniel Metodiev, Marcio Roberto Magalhães de Andrade, Maiconn Vinicius de Moraes, Danielle Silva de Paula, Nélio José Bastos, Luana Albertani Pampuch, Rodolfo Moreda Mendes, Marcio Augusto Ernesto de Moraes

{"title":"Obtaining 2D Soil Resistance Profiles from the Integration of Electrical Resistivity Data and Standard Penetration Test (SPT) and Light Dynamic Penetrometer (DPL) Resistance Tests—Applications in Mass Movements Studies","authors":"Cassiano Antonio Bortolozo, Tatiana Sussel Gonçalves Mendes, Mariana Ferreira Benessiuti Motta, Silvio Jorge Coelho Simões, Tristan Pryer, Daniel Metodiev, Marcio Roberto Magalhães de Andrade, Maiconn Vinicius de Moraes, Danielle Silva de Paula, Nélio José Bastos, Luana Albertani Pampuch, Rodolfo Moreda Mendes, Marcio Augusto Ernesto de Moraes","doi":"10.4236/ijg.2023.149045","DOIUrl":"https://doi.org/10.4236/ijg.2023.149045","url":null,"abstract":"In Brazil and various regions globally, the initiation of landslides is frequently associated with rainfall; yet the spatial arrangement of geological structures and stratification considerably influences landslide occurrences. The multifaceted nature of these influences makes the surveillance of mass movements a highly intricate task, requiring an understanding of numerous interdependent variables. Recent years have seen an emergence in scholarly research aimed at integrating geophysical and geotechnical methodologies. The conjoint examination of geophysical and geotechnical data offers an enhanced perspective into subsurface structures. Within this work, a methodology is proposed for the synchronous analysis of electrical resistivity geophysical data and geotechnical data, specifically those extracted from the Light Dynamic Penetrometer (DPL) and Standard Penetration Test (SPT). This study involved a linear fitting process to correlate resistivity with N10/SPT N-values from DPL/SPT soundings, culminating in a 2D profile of N10/SPT N-values predicated on electrical profiles. The findings of this research furnish invaluable insights into slope stability by allowing for a two-dimensional representation of penetration resistance properties. Through the synthesis of geophysical and geotechnical data, this project aims to augment the comprehension of subsurface conditions, with potential implications for refining landslide risk evaluations. This endeavor offers insight into the formulation of more effective and precise slope management protocols and disaster prevention strategies.","PeriodicalId":58825,"journal":{"name":"地球科学国际期刊(英文)","volume":null,"pages":null},"PeriodicalIF":0.0,"publicationDate":"2023-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"135446772","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 1