scholarly journals Hydrocarbon resource evaluation using combined petrophysical analysis and seismically derived reservoir characterization, offshore Niger Delta

2017 ◽  
Vol 8 (1) ◽  
pp. 99-115 ◽  
Author(s):  
Kehinde David Oyeyemi ◽  
Mary Taiwo Olowokere ◽  
Ahzegbobor Philips Aizebeokhai
Keyword(s):  
Niger Delta ◽  
Reservoir Characterization ◽  
Resource Evaluation ◽  
Petrophysical Analysis ◽  
Hydrocarbon Resource

scholarly journals Seismic interpretation and petrophysical analysis for hydrocarbon resource evaluation of ‘Pennay’ field, Niger Delta

2018 ◽  
Vol 9 (2) ◽  
pp. 1025-1040 ◽  
Author(s):  
Akindeji Opeyemi Fajana ◽  
Michael Ayuk Ayuk ◽  
Pius Adekunle Enikanselu ◽  
Ajibola Rasidat Oyebamiji
Keyword(s):  
Niger Delta ◽  
Seismic Interpretation ◽  
Resource Evaluation ◽  
Petrophysical Analysis ◽  
Hydrocarbon Resource

3-D Seismic Interpretation and Volumetric Estimation of “Osaja Field” Niger Delta, Nigeria

2016 ◽  
Vol 59 ◽  
pp. 14-28
Author(s):  
Lawson Jack Osaki ◽  
Alexander Iheanyichukwu Opara ◽  
Chikwendu Njoku Okereke ◽  
Uche Petters Adiela ◽  
Ikechukwu Onyema Njoku ◽  
...  
Keyword(s):  
Niger Delta ◽  
Reservoir Characterization ◽  
Water Saturation ◽  
Seismic Interpretation ◽  
Structural Interpretation ◽  
Petrophysical Analysis ◽  
Volumetric Estimation ◽  
Net To Gross ◽  
Original Oil In Place ◽  
Structural Architecture

3-D seismic interpretation and petrophysical analysis of the Osaja Field, Niger Delta, was carried out with aim of carrying out a detailed structural interpretation, reservoir characterization and volumetric estimation of the field. Four wells were correlated across the field to delineate the lithology and establish the continuity of reservoir sand as well as the general stratigraphy of the area. The petrophysical analysis carried out, revealed two sand units that are hydrocarbon bearing reservoirs (Sand_A and Sand_B).The spatial variation of the reservoirs were studied on a field wide scale using seismic interpretation. Time and depth structural maps generated were used to establish the structural architecture/geometry of the prospect area of the field. The depth structure map revealed NE-SW trending anticlinal structures with F5and F6as faults assisted closures to the reservoir. Furthermore, reservoir parameters such as net pay, water saturation porosity, net-to-gross etc, were derived from the integration of seismic and well log data. The structural interpretation on the 3-D seismic data of the study area revealed a total of seven faults ranging from synthetic to antithetic faults. The petrophysical analysis gave the porosity values of the reservoir Sand_A ranging from 18.1 - 20.3% and reservoir Sand_B ranging from 13.1-14.9% across the reservoir. The permeability values of reservoir Sand_A ranging from 63-540md and reservoir Sand_B ranging from 18-80md hence there is decrease in porosity and permeability of the field with depth.The net-to-gross varies from 22.1% to 22.4% in Rerservoir Sand A to between 5.34- 12% for Rerservoir Sand _A while Sw values for the reservoirs ranges from 38-42% in well 2 to about 68.79-96.06% in well 11. The result of original oil in place for all the wells calculated revealed that well 2 has the highest value with 9.3mmbls. These results indicate that the reservoirs under consideration have a poor to fair hydrocarbon (oil) prospect.

scholarly journals Petrophysical Analysis and Reservoir Characterization of Emerald Field, Niger Delta Basin, Nigeria

2019 ◽  
Vol 13 (1) ◽  
pp. 21-36 ◽  
Author(s):  
C.G. Kalu ◽  
I.I. Obiadi ◽  
P.O. Amaechi ◽  
C.K. Ndeze
Keyword(s):  
Niger Delta ◽  
Reservoir Characterization ◽  
Petrophysical Analysis ◽  
Niger Delta Basin

scholarly journals Reservoir characterization and by-passed pay analysis of philus field in Niger delta, Nigeria

2016 ◽  
Vol 4 (2) ◽  
pp. 28 ◽  
Author(s):  
Sunmonu Ayobami ◽  
Adabanija Adedapo ◽  
Adagunodo Aanuoluwa ◽  
Adeniji Ayokunnu
Keyword(s):  
Niger Delta ◽  
Oil And Gas ◽  
Reservoir Characterization ◽  
Petroleum Industry ◽  
Volumetric Analysis ◽  
Vital Role ◽  
Oil And Gas Exploration ◽  
The Past ◽  
Stock Tank ◽  
Original Oil In Place

Hydrocarbon resources have become the most essential commodity contributing to any nation’s growth and development in the recent years. For the past decades now, the quest for hydrocarbon resources has been increasing in an arithmetic rate that its supply can no longer meets the demand for its consumption today. In petroleum industry, seismic and well log analyses play a vital role in oil and gas exploration and formation evaluation. This study is aimed to effectively characterize the reservoirs and analyze the by-passed pay in Philus Field, Niger-Delta, Nigeria in order to look into the economic viability and profitability of the volume of oil in the identified reservoir(s). The faults in the study area trend in NW-SE direction and dip towards the south. Seven reservoirs were mapped on Philus field. A discovery trap and a by-passed (new prospect) trap were mapped out on the field. The petrophysical analysis showed that porosity of Philus field was 0.24. The volumetric analysis showed that the Stock Tank Original Oil in Place of discovery trap (Philus field) ranged from 1.6 to 43.1 Mbbl while that of new prospect trap ranged from 18.1 to 211.3 Mbbl. It is recommended that the oil reserve of Philus field needs to be recalculated.

scholarly journals Estimating reservoir geomechanical parameters for enhanced reservoir characterization: case study of “Tobi” field, Niger Delta

2020 ◽  
Vol 2 (8) ◽  
Author(s):  
Sunday J. Olotu ◽  
Olatunbosun A. Alao ◽  
Paul G. Agbai ◽  
Olaolu Afolabi ◽  
Esther B. Inaolaji
Keyword(s):  
Niger Delta ◽  
Reservoir Characterization ◽  
Geomechanical Parameters

scholarly journals Application of model-based inversion technique in a field in the coastal swamp depobelt, Niger delta

2018 ◽  
Vol 6 (1) ◽  
pp. 122
Author(s):  
Okoli Austin ◽  
Onyekuru Samuel I. ◽  
Okechukwu Agbasi ◽  
Zaidoon Taha Abdulrazzaq
Keyword(s):  
Niger Delta ◽  
Reservoir Characterization ◽  
Seismic Inversion ◽  
Inversion Method ◽  
Seismic Reflection Data ◽  
Model Based ◽  
Reflection Data ◽  
X 32 ◽  
Niger Delta Basin ◽  
Bypassed Oil

Considering the heterogeneity of the reservoir sands in the Niger Delta basin which are primary causes of low hydrocarbon recovery efficiency, poor sweep, early breakthrough and pockets of bypassed oil there arises a need for in-depth quantitative interpretation and more analysis to be done on seismic data to achieve a reliable reservoir characterization to improve recovery, plan future development wells within field and achieve deeper prospecting for depths not penetrated by the wells and areas far away from well locations. An effective tool towards de-risking prospects is seismic inversion which transforms a seismic reflection data to a quantitative rock-property description of a reservoir. The choice of model-based inversion in this study was due to well control, again considering the heterogeneity of the sands in the field. X-26, X-30, and X-32 were used to generate an initial impedance log which is used to update the estimated reflectivity from which we would obtain our inverted volumes. Acoustic impedance volumes were generated and observations made were consistent with depth trends established for the Niger Delta basin, inverted slices of Poisson impedances validated the expected responses considering the effect of compaction. This justifies the use of inversion method in further characterizing the plays identified in the region.

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