IOSR Journal of Applied Geology and Geophysics最新文献_第3页

Description of field trench configuration and processing and interpretation of ground penetrating radar’s data 野外战壕形态描述及探地雷达数据处理与解释

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0503010105

Sun Tianzhu, Shen Chen, Feng Guoqi, Zhang Bolin, Tao Jianbo, Yan Bai-quan

{"title":"Description of field trench configuration and processing and interpretation of ground penetrating radar’s data","authors":"Sun Tianzhu, Shen Chen, Feng Guoqi, Zhang Bolin, Tao Jianbo, Yan Bai-quan","doi":"10.9790/0990-0503010105","DOIUrl":"https://doi.org/10.9790/0990-0503010105","url":null,"abstract":"In recent years, ground penetrating radar (GPR) has been widely used as a technical means to understand the characteristics of subsurface geological deposition. However, there has not been any ground penetrating radar to recognize the internal configuration of the dam. The aim of this study is to form a composite dam with a point bar stack. Firstly, the highest resolution frequency of GPR is selected, and then the data are taken in the study area. And eliminate the influence of various factors on data volume. On the basis of the previous work, the location, the formation mechanism and the spatial distribution of the composite dam are determined by measuring the location of the point dam overlap and the dip angle, inclination and thickness of the lateral accretion. Keyword: Ground penetrating radar; Field trench; the meandering river point bar; Point dam configuration. Preface: The main contents of this test include the detailed description and interpretation of the field configuration element, the processing and interpretation of GPR data [1] . Test period from January 15, 2015 to April 15, 2015. Detailed test items, the number of test samples and the corresponding parameters are required to see the following table:","PeriodicalId":111900,"journal":{"name":"IOSR Journal of Applied Geology and Geophysics","volume":"19 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"121889111","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

Diffraction Amplitude for Fractures Imaging & Hydrocarbon Prediction 裂缝衍射振幅成像与油气预测

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0503015059

Y. Bashir, D. Ghosh, C. Sum

{"title":"Diffraction Amplitude for Fractures Imaging & Hydrocarbon Prediction","authors":"Y. Bashir, D. Ghosh, C. Sum","doi":"10.9790/0990-0503015059","DOIUrl":"https://doi.org/10.9790/0990-0503015059","url":null,"abstract":"Seismic diffractions are often considered as noise and have been suppressed during processing intentionally or implicitly. Diffraction hyperbola actually have the information of discontinuity such as fault, fracture, Karst and edge of salt flanks, which always contain valuable information for geological interpretation and reservoir modeling. These diffractions play an important role to illuminate the small scale events which are crucial for structural traps such as fractured reservoir. Another important part of diffraction is to improve the amplitude recovery at the certain point through diffraction summation. These diffracted waves have been recognized as physically reliable carriers of high and even super-resolution structural information. This research work illustrates the different behavior of diffraction hyperbola comparing with different velocities and depths. Phase change in amplitude in 180 0 from +ive to –ive and the decay in amplitudes directly proportional to the angle of incident. Synthetic data set is used for the analysis of amplitude preservation through diffraction imaging. Outcome of the research demonstrate the consideration of diffraction imaging for discontinuities, complex structure and small scale reservoir imaging, which subsidize a good impact to search the hydrocarbon potential reserves. Another aspect is cover that describes the importance of migration aperture selection for integration of the diffractions on the basis of frequency of the data, as high frequency will produce less diffraction response then low frequency. Last but not least, the diffraction imaging improves the spatial resolution of individual faults and fracture below the resolution of reflections.","PeriodicalId":111900,"journal":{"name":"IOSR Journal of Applied Geology and Geophysics","volume":"15 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"133606118","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: 3

Weathering and its Potential Effect on Mine Slope Factor of Safety 风化及其对矿山边坡安全系数的潜在影响

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0503012133

S. Chakufola, E. Samuel, P. Chileshe

引用次数: 1

Miospore Biozonation and age characterization of Upper Miocene - Pliocene sediments in well X, deep offshore Niger delta. 尼日尔三角洲X井上中新世—上新世沉积物的微孢子生物分带及年龄特征。

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0503010613

A. Asadu, N. OfuyahW.

{"title":"Miospore Biozonation and age characterization of Upper Miocene - Pliocene sediments in well X, deep offshore Niger delta.","authors":"A. Asadu, N. OfuyahW.","doi":"10.9790/0990-0503010613","DOIUrl":"https://doi.org/10.9790/0990-0503010613","url":null,"abstract":"Miospore biozonation carried out on ditch cutting rock samples has been used to delineate the Upper Miocene/Pliocene sediments in well X, deep offshore, Niger delta. The rock succession is characterized by the alternation of sand and shale of variable thicknesses with lateral gradation in grain size. The base of the studied interval is made of Black shales intercalating with medium to coarse grained, sub rounded to rounded sandstone and siltstone at intervals representing the paralic Agbada formation while the top is made of Sub angular sub rounded quartz pebble conglomerate, pebbly sandstone, medium coarse grained, subrounded to well-rounded sandstone, intercalating with very thin lenses of grey shales typically of the coastal plain sand of the Benin Formation. The palynological characterization of the well yielded a well preserved and diverse biostratigraphic important Miospores among which sixty-one miospores (fifty-one pollen and ten spores) were identified and used to erect ten miospore zones. The biozonation is premised on the recognition of the first and last downhole occurrences of these Palynological events. The zones are defined from the base to top as follows: Magnastiatites howardi, Inerperturopollenites sp, Caryapollenites veripites, Striatricolpites catatumbus, Verrutricolporites rotundiporis, Echitriporites spinosus, Canthimidites sp, Pordocarpus milanjanus and Verrutriculporites rotundiporis. Correlation with the existing pantropical zones yielded Upper Miocene to Pliocene age. Results from textural and lithological analysis show that the rock succession penetrated the Agbada and Benin Formations.","PeriodicalId":111900,"journal":{"name":"IOSR Journal of Applied Geology and Geophysics","volume":"71 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127153448","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: 2

Investigating the Corrosivity of KCl/Polymer Drilling Mud on Downhole material KCl/聚合物钻井液对井下材料的腐蚀性研究

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0503014449

H. Sadiq

{"title":"Investigating the Corrosivity of KCl/Polymer Drilling Mud on Downhole material","authors":"H. Sadiq","doi":"10.9790/0990-0503014449","DOIUrl":"https://doi.org/10.9790/0990-0503014449","url":null,"abstract":"The corrosive effect of drilling fluids was analysed by testing the corrosivity of a KCl/Polymer formulation, with temperature and salt concentration as the measurement variables. This was carried out using the weight loss technique in order to measure the effect of KCl/polymer muds on carbon steel, testing the mud behaviour for three different temperatures and the salt concentrations these helps in knowing the behaviour of the mud on downhole materials. From the Experiment it was confirmed that drilling fluids are corrosive and with the presence of salt and temperature, the corrosivity increases but decreases with increase in salt concentration. The rise in corrositivity continues with increasing temperature, but with the retardation in oxygen solubility the rise ceases. The corrosion rate of KCl/Polymer mud with these variables indicated high corrosion rate, which could be effect of other parameters that aided conductivity and the effect of temperature in the process. Those could have been based on the additives used in the mud that also contributed in aiding corrosion. However these effects were not regarded as prominent due to the addition of caustic soda that gave the mud a reasonably high pH of 9.5 to 10, which also inhibits corrosion. Other factors such as oxygen, whose effect was controlled by temperature, could have contributed to the corrosion rate. A low weight loss was shown after 72 hours exposure of the specimen to the mud. This was anticipated to be the inhibiting nature of potassium chloride, the static nature of the mud based on zero shear stress effect on the carbon steel surface and less oxygen transportation to the corroding specimen due to zero agitation of the mud. The minimum corrosion rate of the mud was 0.32 mm/year which was at the highest salt concentration and the lowest temperature of 40 0 C. The maximum corrosion rate was 0.96 mm/year which was at the lowest salt concentration and the highest temperature of 80 0 C, this agrees in principle with the behaviour of temperature and salt concentration.","PeriodicalId":111900,"journal":{"name":"IOSR Journal of Applied Geology and Geophysics","volume":"5 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"127907570","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

The Use of Remote Sensing and Gis in Mineral Prospecting Of Toro and Environs (Bauchi State) 遥感与Gis在托罗及周边地区(包奇州)矿产勘查中的应用

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0503013443

C. AluwongK., D. Bala, P. Kamtu, R. N. Nimchak

引用次数: 2

Palynological Investigation of Oligocene - Lower Miocene Sediments in Well Z, offshore Niger Delta, Nigeria. 尼日利亚尼日尔三角洲Z井渐新世-下中新世沉积物孢粉学研究。

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0503011420

A. Asadu, N. OfuyahW.

{"title":"Palynological Investigation of Oligocene - Lower Miocene Sediments in Well Z, offshore Niger Delta, Nigeria.","authors":"A. Asadu, N. OfuyahW.","doi":"10.9790/0990-0503011420","DOIUrl":"https://doi.org/10.9790/0990-0503011420","url":null,"abstract":"Palynological investigation of the ditch cutting rock samples from well Z, offshore Niger Delta has been carried out. The rock succession is characterised by the alternation of fossilferous grey sandy shale with shells and shell fragments intercalating with medium coarse grained, sub rounded to rounded sandstone with scattered mica flakes with appreciable thickness at the base and more paralic at the top, characteristically of the paralic Agbada Formation. Palynological analysis yielded a well preserved and well distributed biostratigraphic relevant Miospores among which fifty nine Miospores were identified. On the basis of the first and last downhole occurrences of these Palynological events, nine miospore biozones were erected. The zones are Zonocostites ramonae, Monoporites annulatus, Dualidites laevigatus, Pachydermites diederixi, Canthium sp, Gemmamonoporites sp, Retibrevitricolpites protrudens, Inaperturopollenites hiatus and Perfotricolporites digitatus.These zones were compared with the pre existing standard palynological zones in Niger delta and other adjoining basins in Nigeria and used to delineate the Oligocene (Chatian) / Lower Miocene intervals in the well.","PeriodicalId":111900,"journal":{"name":"IOSR Journal of Applied Geology and Geophysics","volume":"18 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"132674872","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: 2

Groundwater Quality Assessment of a Coastal Aquifer in Niger Delta Using Geo-electrical Techniques 利用地电技术评价尼日尔三角洲沿海含水层的地下水质量

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0502027175

I.P.C. Okorie, A. Sofolabo

引用次数: 1

Investigation of Shear Wave Velocity and Predominant Period Properties of Bornova Plain (IZMIR) and Its Surroundings 博尔诺瓦平原及其周边地区横波速度和优势周期特性研究

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-05-01 DOI: 10.9790/0990-0502027679

E. Pamuk, Ö. Özdağ, A. Tunçel, M. Akgün

引用次数: 0

Porosity-Permeability Regimes in Reservoirs for Hydrocarbon Prospectivity in Nembe Creek Field, Niger Delta 尼日尔三角洲Nembe Creek油田储层孔隙度-渗透率变化对油气远景的影响

IOSR Journal of Applied Geology and Geophysics Pub Date : 2017-04-01 DOI: 10.9790/0990-0502026270

G. Alaminiokuma, W. Ofuyah

{"title":"Porosity-Permeability Regimes in Reservoirs for Hydrocarbon Prospectivity in Nembe Creek Field, Niger Delta","authors":"G. Alaminiokuma, W. Ofuyah","doi":"10.9790/0990-0502026270","DOIUrl":"https://doi.org/10.9790/0990-0502026270","url":null,"abstract":"Porosity and permeability regimes in hydrocarbon-bearing reservoirs of Nembe Creek Field, Niger Delta were delineated by digitizing and correlating gamma ray, resistivity, and density logs from three wells: Nembe 01, Nembe 02 and Nembe 03 respectively. Results obtained from the analyses of these composite logs reveal eight potential hydrocarbon-bearing reservoirs. These reservoir sands were observed to have very good to excellent average porosities ranging from 29 to 45%. Permeability values were excellent within these reservoirs and range from 2200 to 5789mD. Hydrocarbon saturation was observed to be high in all the reservoir sands, ranging from 64 to 81% with corresponding water saturation from 36 to19%. The regimes observed indicate that porosity and permeability increase with depth. Cross-plots indicate increase in porosity and permeability with depth and a linear increase of permeability with porosity. Petrophysicists and reservoir analysts will find these results very beneficial for better understanding of the reservoir properties, fluid distribution and in quantifying the hydrocarbon prospectivity of this Field which is observed to be very high.","PeriodicalId":111900,"journal":{"name":"IOSR Journal of Applied Geology and Geophysics","volume":"51 1","pages":"0"},"PeriodicalIF":0.0,"publicationDate":"2017-04-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"129440459","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: 3