Research Papers/Topics in Applied Geophysics

GEOELECTRICAL INVESTIGATION OF GROUNDWATER POTENTIAL OF ADMINISTRATIVE BLOCK AT PERMANENT SITE, FEDERAL UNIVERSITY DUTSIN-MA, KATSINA STATE, NIGERIA

Abstract A  geophysical  survey  for  groundwater  resources  was  carried  out  in  the  administrative  block  of Federal  University  Dutsin-Ma,  permanent  site.  This  was  successfully  done  by  employing  the electrical  resistivity  method  to  investigate  the  water  table  variations,  the  depth  to  basement, thickness of weathered basement, thickness of aquifer and area suitable for boreholes establishment within  the  areas  covered  wit...

Geophysical Investigation of the Causes of Borehole Failure in the Crystaline Basement Complex: A Case Study of Kaura Area of Kaduna State, Nigeria

Abstract Vertical Electrical Soundings (VES) using Schlumberger array were carried out at different points along five (5) profiles. This research investigates the causes of massive  borehole failure at Kaura  area of Kaduna state using the resistivity tomography techniques. Terrameter SAS300 is the instruments used to acquire the data. A total of 19  boreholes  are  functioning,  while  31  boreholes  are  non-functioning  within  th...

Evaluation of Waste Landfill Using 2-D Resistivity Imaging. ( A Case Study Of Iguomo Dumpsite) Edo State, Nigeria

AbstractMunicipal solid waste disposal sites can be sources of groundwater contamination and the contamination problems are more likely to occur in humid areas, where the moisture available exceeds the ability of the waste pile absorb water. 2-D resistivity imaging has frequently been used in the subsurface pollution studies. The method maps the distribution of resistivity of subsurface materials. The 2-D resistivity image provides general information on subsurface stratification of buried wa...

Resolution of Uncertainties in Convectional Logs Using 3D Explorer (3DEX) Data Sets: Niger-delta Example, OLU Field

The novel approach of unraveling the potential of bypassed hydrocarbon reservoir a thinly laminated geology by comparing the petrophysical parameters and computed Stock Oil Initial-in-Place (STOIIP) obtained from conventional log response to that obtainable in high resolution image data sets was carefully initiated. Archie's equation was adopted in the estimation of water saturation. The net-to-gross was estimated directly from the logs. TECHLOG 2.7 Version was used to estimate the ...

Preliminary structural evaluation of an X-Field Onshore in Niger Delta using 3D seismic data

A structural evaluation of a post stack time migrated (PSTM) 3D seismic data over an X–Field in the eastern Niger Delta has been attempted. The objective of the study is to structurally evaluate the field with a view to identifying structural features such as faults, map geologic horizons and analyze reflection characteristics that might be a good lead to probable hydrocarbon accumulations. Results revealed that six growth faults (F1, F2, F3, F4, F5, and F6) and three seismic horizons (HI, ...

Evaluation of Reservoir’s Petrophysical Parameters, Niger Delta, Nigeria

Petrophysical analysis was performed in two wells in the Niger Delta Region, Nigeria. This study is aimed at making available petro-physical data, basically water saturation calculation using cementation values of 2.0 for the reservoir formations of two wells in the Niger delta basin. A suite of geophysical open hole logs namely Gamma ray; Resistivity, Sonic, Caliper and Density were used to determine petrophysical parameters. The parameters determined are; volume of shale, porosity, water sa...

Regional Geoelectrical Survey Across Some Parts of Anambra and Niger Delta Basins, South-Eastern Nigeria.

A regional geoelectrical study was embarked upon covering some major towns within the Niger Delta and Anambra basin. Some of the towns include; Owerri, Umuahia, Ohafia, Aba, Umuosu, Ngwa, Mbaise, Okigwe, Lekwesi, etc. About 100 Vertical Electrical Sounding points were established along two long profiles running perpendicularly to each other at North-South and East-West directions covering a distance of about 110km in each traverse. The maximum electrode spread was 500metres, AB/2. The schlumb...

Application of Very Low Frequency- Electromagnetic (VLF-EM) Method to Map Fractures/Conductive Zones in Auchi South western Nigeria.

Geophysical survey involving very low frequency electromagnetic technique was applied to investigate possible geologic features like fractured / conductive zones in Auchi and its environs in Edo state, Southwestern Nigeria. The study area is located within latitudes 7o05’ N.to 7o10’N. and longitudes 6o11’E to 6o22’E The geologic Formations outcroping in the area are mainly Ajali and Nsukka. Three profiles were taken along the roads from Auchi to Igara, Auchi to Fugar and Auchi to Ulok...

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Reduction of Cell Phone Electromagnetic Radiation Effect on Human Body

ABSTRACTElectromagnetic waves generated by different wireless systems like mobile systems, satellite systems, microwave links…etc. facilitates our communications throughout the world. These waves have many effects on the human body as well as our daily lives. The effects of electromagnetic waves cause many problems and diseases in the human body like cancer. Nowadays, types of the cancer caused by these waves has increased, because mobile users have increased. Because of the importance of h...

REPORT ON GEOPHYSICAL SURVEYS AT IKOT NAKANDA, AKPABUYO LOCAL GOVERNMENT AREA OF CROSS RIVER STATE, NIGERIA

Geophysical field school is an annual academic camping exercise that is aimed at exposing students to the practical aspects of geophysics. It is a three (3) credit hour course for third year students of applied geophysics aimed at educating students on the handling of geophysical equipment and the rudiments of data acquisition, processing and interpretation.This year’s field school was held at Ikot Nakanda and its environs, in Akpabuyo locall government area of Cros...

Forensic Geophysics: Geophysical Techniques and Applications

Forensic geophysics can be seen as that involving the use of geophysical methods in the search, locating and mapping of hidden or buried features underground or underwater. Geophysical methods have the potential to aid the search and recovery of a target because they can nondestructively and rapidly investigate large areas where a suspect, illegal burial or, in general, a forensic target or object is hidden in the subsurface.

FIBRE OPTIC IN RESERVOIR SENSING

Fibre optic technologies came out of military and space research and development programme. Until recently, glass chemistry and laser interrogation hardware have not been at a level of robust where systems could survive in down-hole environments for long periods. Because of the physical properties, glass can thrive as a sensor at extremely high temperatures and efficiently high temperatures and efficiently tra...

SEISMIC TIME-LAPSE RESERVOIR MONITORING

Time lapse seismic which geophysicists often abbreviate to four dimensional (4-D) seismic is a geophysical technique which involves simply repeating a series of 3-D seismic survey over time such that the fourth dimension is in “Calendar Time”. This gives it the ability to image fluid flow in a well volume.

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