Engr. Dr. Ndubuisi Uchechukwu Okereke


Engr. Dr. Ndubuisi Uchechukwu Okereke

Senior Lecturer

B. Eng., M.Sc, PhD
Email: 

Biography

Dr. Ndubuisi U. Okereke is currently a Senior Lecturer at the Department of Petroleum Engineering,  Federal University of Technology Owerri. He has over 15 years combined industry and academia experience, cutting across; subsea engineering and deepwater oil field development, flow assurance studies, project management and tutoring on courses related to Petroleum production, reservoir engineering, rock mechanics etc. Some of the major projects he has been involved in includes: Review of Severe Slugging Mitigation Strategy for Chevron’s Agbami Oil Field, Swamp dredging/work-over operations of typical swamp oil wells: such as Belema Oil wells 8, 9, and 10 for SPDC (Shell Petroleum Development Company). He is a member of SUT (Society for Underwater Technology) and SPE (Society of Petroleum Engineers). He has also been involved in the Pre-FEED project for Santos basin in Brazil, where he worked with the Flow Assurance team to develop a Flow Assurance strategy for an oil field with inherent wax problem. He is very competent in the deployment of OLGA. He has authored and co-authored over 30 publications (journals and conference papers) relevant to the oil and gas industry. He also co-authored “Introduction to Offshore Operations and Technology” text book which is also available on amazon.     

Academic Qualification

  • PhD – “Numerical Prediction of Slugging Problems in Deepwater Pipeline-Riser Systems”; Cranfield University; UK – January, 2016
  • MSc. – Offshore and Ocean Tech. (Subsea Engineering Option); Cranfield University – Sept., 2010
  • B. Eng. Civil Eng. (FUTO) – Nov., 2004.

Honours/Awards

  • PTDF OSS Scholar – 2012

  • Most Supportive Lecturer (SPE) – 2023

 

Affiliations

  • SPE (Society of Petroleum Engineers – Member and Executive SPE S103)
  • NSE (Nigerian Society of Engineers – Member)
  • SUT (Society for Underwater Technology – Member)

Courses Assigned to Teach

  1. PET 204 (Basic Geology)
  2. PET 306 – (Petroleum Production Systems 1)
  3. PET 511 – (Petroleum Products Transportation and Storage)
  4. PET 513 – (Offshore Operations)
  5. PET 415 (Petroleum Rock Mechanics)
  6. ENG 101 and ENG 102 (Engineering Workshop Practice 1 & 2)
  7. ENG 405 (Engineering Management & Law); PET 709 (Technical Report Writing) and PET 808 (Multiphase flow in Pipes)
  8. Centre: FUTO_CEsPSSE (Faculty Support Staff for Module 3 – Procurement Management of Goods)

Experience

Senior Lecturer at Department of Petroleum Engineering, SEET:

Federal University of Technology, Owerri (F.U.T.O) July, 2018 – Till Date       

Key Role:

  • Tutoring on Offshore Drilling PET 816; PET 306 (Petroleum Production 1); PET 204 – (Basic Geology); PET 511 – (Petroleum Products Transportation and Storage); PET 513 – (Offshore Operations); PET 415 – (Petroleum Rock Mechanics); ENG 101 and ENG 102 (Engineering Workshop Practice 1 & 2)
  • Participation in Report Writing Template Committee to come up with a template for Project Writing for Department of Petroleum Engineering
  • Sorting of outstanding courses for 2010/2011 Petroleum Engineering Undergraduate Class
  • Result Computation for 2010/2011 Petroleum Engineering Undergraduate Class
  • Participation in the Internal Review of PhD Candidates from Petroleum Engineering Department
  • Participation in the review of curriculum for proposed M.ENG in Subsea Engineering
  • Invigilation of Exams (GLY 308, PHY 532, TRP 504, EVT 564, CHM 202 and BLD 508)

 

Senior Lecturer in Petroleum Engineering at AfeBabalola University             November, 2016 – July, 2018 

  Key Role:

  • PG Co-ordinator for Petroleum Engineering
  • Preparation of Lecture Materials on Strength of Materials (ENG 714)
  • Preparation of Lecture Materials on Materials Science (ENG 711)
  • Preparation of Lecture Materials on Petroleum Rock Mechanics (PTE 413)
  • Preparation of Lecture Materials on Reservoir Modelling and Simulation (PTE 519)
  • Preparation of Lecture Materials on Petroleum Economics (PTE 514)
  • Preparation of Lecture Materials on Oil and Gas Offshore Operations (PTE 520)
  • Delivering Lectures on Reservoir Modelling and Simulations, Rock Mechanics and Petroleum Economics
  • Delivering Lectures on Oil and Gas Offshore Operations
  • Supervision of Project Undergraduate Students on Flow Assurance Studies and Drilling Engineering Studies

 

Operations Lead at Joules Energy Limited                                         July, 2016 – November, 2016 

Key Role: 

  • Development of Work Procedure for NPDC ROV Drilling Support Tender
  • Development of Safety Plan for ROV Drilling Support Tender
  • Driving of MAXIMUS (Steady State LOF Tool) into the Oil and Gas Market in West Africa
  • Development of New Venture Ideas for Company

 

 Part-Time Lecturer 1 at OTI-UniportMarch, 2016 – July, 2016  

 Key Role:

  • Development of Course Note for Subsea Oil and Gas Exploitation
  • Facilitating Subsea Oil and Gas Module
  • Preparation of Assessment Materials and Answers for Subsea Oil and Gas exploitation Module
  • Development of Short-course on Flow Assurance (FA-CPD)

 

PhD Research Student at Cranfield University/HPL at Coventry University, UK.      Sept. 2012 – February, 2016 

Key Role:

  • Critical literature review, to understand the background of conditions that initiate slugging in deepwater oil fields.
  • Generation of field data from a sample deepwater oil field in West Africa.
  • Development of an Olga flow loop model, for slugging analysis in Flow Loop X1 at 3000 bopd and 6722 bopd.
  • Development of a slug envelope for typical 8” flow loops based on (water-cut and mass flow rate impact).
  • Supervision of over 16 MSc Thesis on key subjects (Drilling, Flow Assurance – Slugging and EOR Techniques).

 

Basilman and Company Nigeria Limited – Project Engineer/Subsea Support Engineer     Sept. 2010 – Sept. 2012                                                   

Key Roles        

  • Development of HSE Plan for Ekulama 30/29/27/28/09 Shell Swamp Well Locations.
  • Development of Work Method for Ekulama 30/29/27/28/09 Shell Swamp Well Locations.
  • Development of Waste Management Plan for Ekulama 30/29/27/28/09 Shell Swamp Well Locations.
  • Mobilization and Execution of Ekulama 30/29/27/28/09 Shell Swamp Well Locations.
  • Review of Thin Jack Procedures for separating of seized wellhead flanges sizes (3” – 37”).

Key Achievements:  

  • Quick turn-around of the HSE Plan, Work Method and Waste Management Plan within 2 weeks and development of a standard template for Basilman& Company.
  • Delivered the project 1 month ahead of schedule, thereby saving the company USD$ 26000 on dredger OPEX and Dry Plant Daily hire.

 

Basilman and Company Nigeria Limited – Project Engineer                            Aug. 2007 – Sept. 2009                                                   

Key Roles   

  • Developed a work plan for coupling 16” pipelines and bundwall construction for dredging of Belema Swamp Well.
  • Supervised 20 personnel for the dredging of Belema Swamp Well Projects.
  • Supervised 15 personnel for sand-filling project.

Key Achievements   

  • The projects were completed on time and on budget and hazard was at barest minimum and zero fatalities.

 

Shell Petroleum Development Company Nigeria Ltd. – Internship                    Sept. 2003 – March 2004   

Key Roles:    

  • Review of pre-dredge results, to verify the volume of silt to be dredged.
  • Review of maintenance plan for Chobiekiri based on S-30 Shell dredging code.
  • Review of Chobiekiri post-dredge results, to verify dredged volumes.
  • Reviewed tide regime window for mobilisation plan of Alakiri dredging project

Research Interest

  1. Flow Assurance (Emphasis on slugging mitigation and hydrates mitigation)
  2. Drilling (Fluid loss control)
  3. Offshore (Maintenance of Pipeline-Riser Systems and Asset Management)
  4. Produced Water Treatment

Publications

S/N

DATE

AUTHORS

TITLE         

PUBLISHERS

1.

2022

Okereke, N. U., Ogazi, I. A., Umofia, A., Ohia, N. P., Udeagbara, S. G., Nwanwe, O., … &Kerunwa, A

Investigation of Gas-Lift Mitigation in Deepwater Pipeline-Riser System.

In SPE Nigeria Annual International Conference and Exhibition. OnePetro.

https://doi.org/10.2118/212008-MS

2.

2021

Udeagbara, S. G., Isehunwa, S. O., Okereke, N. U., Oguamah, I. U., Kerunwa, A., &Nwanwe, O.

Treatment of produced water from Niger Delta oil fields using sequential mixture of bio-adsorbents.

Cogent Engineering, 8(1), 1939927.

https://www.tandfonline.com/doi/full/10.1080/23311916.2021.1939927

3.

2021

Izuwa, N. C., Nwogu, N. C., Williams, C. C., Ihekoronye, K. K., Okereke, N. U., &Onyejekwe, M. I.

Experimental investigation of impact of low salinity surfactant flooding for enhance oil recovery: Niger Delta field application.

Journal of Petroleum and Gas Engineering, 12(2), 55-64.

https://academicjournals.org/journal/JPGE/article-abstract/39DCAF767449

4.

2021

Udeagbara, S. G., Okereke, N. U., Kerunwa, A., Oguamah, I., Nwanwe, O. I., Odo, J. E., … &Okeke, R. (2021). 

Performance evaluation of oil based drilling fluid formulated with castor oil.

Journal of Petroleum and Gas Engineering, 12(1), 8-22.

https://academicjournals.org/journal/JPGE/article-abstract/489539366748

5.

2021

Emeka, O. J., Ifeanyi, O., Chikwe, A., Nwachukwu, A., Ndubuisi, O., Ifeanyi, O., &Chidiebere, O. A.

Effect of the Application of Aluminium Oxide on Recovery in Enhanced Oil Recovery. 

Engineering and Applied Sciences, 6(2), 41.

https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=Effect+of+the+application+of+aluminium+oxide+on+Recovery+in+Enhanced+Oil+Recovery+&btnG=

6.

2021

Okereke, N. U., Ogazi, I. A., Umofia, A., Abili, N., Ohia, N. P., &Ekwueme, S. T.

Adopting Subsea Separation Technologies for Deepwater West-Africa: A Review Study.

SPE Nigeria Annual International Conference and Exhibition. OnePetro.

https://onepetro.org/SPENAIC/proceedings/21NAIC/2-21NAIC/D021S003R006/465635?searchresult=1

7.

2021

Ohia, N. P., Ekwueme, S. T., Achumba, G. I., Okereke, N. O., Nwankwo, I. V., &Nnwanwe, O. I.   

A Comparative Study of Soft String Vs Stiff String Models Application in Torque and Drag Analysis.

SPE Nigeria Annual International Conference and Exhibition. OnePetro.

https://onepetro.org/SPENAIC/proceedings/21NAIC/3-21NAIC/D031S014R005/465678?searchresult=1

8.

2021

Ohia, N. P., Ekwueme, S. T., Achumba, G. I., Okereke, N. O., Nwankwo, I. V., &Nnwanwe, O. I.

Analysis of Critical Buckling Loads For Tool-Jointed Drillstrings in Deviated Wellbores.

SPE Nigeria Annual International Conference and Exhibition. OnePetro.

9.

2020

Nwanwe, O., Izuwa, N., Nwanwe, C., Okereke, N., Nwajiuba, N., &Nwogu, N.

Evaluation of the Development Strategies for a Greenfield Using Integrated Production Modeling

Petroleum & Coal, 62(4)

https://www.vurup.sk/petroleum/2020/volume-62/

 

 

10.

2020

Udeagbara, S. G., Isehunwa, S. O., Okereke, N. U., &Oguamah, I. U.

“Treatment of produced water from Niger Delta oil fields using simultaneous mixture of local materials”     

Journal of Petroleum Exploration and Production Technology, 1-14. https://link.springer.com/article/10.1007/s13202-020-01017-w

 

11.

2020

Fred, F., Okereke, N., Kara, F., Onwukwe, S., Ehinmowo, A., Baba Y, Y., &Odo, J. (2020).

Techno-economic comparison of self-lift and gas-lift severe slug mitigation techniques in deepwater scenario   

SPE NAICE 2020; https://doi.org/10.2118/203693-MS

12.

2020

Okereke, N., Edet, P., Afolabi, F., Baba, Y., Izuwa, N., Kanshio, S. &Odo, J.

Techno-Economic Assessment of the Hydrates Mitigation Potential of LDHI and MEG in Deepwater Scenario

In SPE Nigeria Annual International Conference and Exhibition. Society of Petroleum Engineers. https://doi.org/10.2118/203665-MS

13.

2020

Okereke, N., Ogbuka, V., Izuwa, N., Kara, F., Nwogu, N., Nwanwe, O. &Oguama, I.

Advanced Mathematical Model for Prediction of Sand Production Rate: A Niger-Delta Case-Study

In SPE Nigeria Annual International Conference and Exhibition. Society of Petroleum Engineers. https://doi.org/10.2118/203692-MS

14.

2020

Odo, J. E., Ikpeka, P. M., Okereke, N. U., Odo, B. C., Idika, U. U., &Ofoegbu, D. C

Model for Estimating Optimum Hydraulic Fracture Geometry in Gas Condensate Reservoir

In SPE Nigeria Annual International Conference and Exhibition. Society of Petroleum Engineers. https://doi.org/10.2118/203653-MS

15.

2020

Kerunwa, A., Okereke, N. U., &Tasiewojiewhor, I.

“Enhancing the Productivity of Niger Delta Shale Formation through Matrix Stimulation: An Experimental Study

 

Open Journal of Yangtze Oil and Gas, 5(03), 117.  10.4236/ojogas.2020.53010

16.

2019

Okereke, N. U., Edet, P.E., Baba, Y. D., Izuwa, N. C., Kanshio, S., Nwogu, N., Afolabi, F.A. and Nwanwe, O.

An assessment of hydrates inhibition in deepwaterproduction systems using low-dosage hydrate inhibitor and monoethylene glycol        

 

Journal of Petroleum Exploration and Production Technology https://doi.org/10.1007/s13202-019-00812-4;  Springer

17.

2018

Okereke, N.U. and Omotara O.O.

Combining self-lift and gas-lift: A new approach to slug mitigation in deepwater pipeline-riser systems

Journal of Petroleum Science and Engineering, May, 2018 (DOI: https://doi.org/10.1016/j.petrol.2018.04.064); Elsevier    

 

18.

2018

Yahaya, D.B.

Pipe Inclination Effects on High-Viscosity Oil-Gas Two-Phase Flow Characteristics

Elsevier

https://scholar.google.com/scholar?hl=en&as_sdt=0%2C5&q=Pipe+Inclination+Effects+on+High-Viscosity+Oil-Gas+Two-Phase+Flow+Characteristics&btnG=

19.

2018

T.B. Odjiugo et. al.

Optimization of Artificial Lifts Using Prosper Nodal Analysis for BARBRA-1 Well in Niger Delta

Nigeria Journal Of Technology Development

20.

2018

N.U. Okereke, S.O. Ogiriki and Prof. A.I. Igbafe

 

Self-lift and Gas-lift Techniques Combined: A New Approach to Severe Slug Mitigation in Deepwater Scenario

NAICE 2018, Published by SPE; August, 2018

https://onepetro.org/SPENAIC/proceedings-abstract/18NAIC/All-18NAIC/SPE-193531-MS/215888

21.

2018

Okereke, N.U. and Udeagbara, S.G.

Numerical Investigation of Slug Suppression System In Deepwater Scenarios

Journal of Petroleum Science and Technology

22.

2017

I.O. Adefemi, F. Kara and N.U. Okereke

Investigation of Self-lift Slug Mitigation in Deepwater Scenarios

Published in Underwater Technology Journal, November, 2017 (DOI: https://doi.org/10.3723/ut.34.157)”. 

 

23.

2018

N.U. Okereke, Y.D. Baba, A. Ogunyemi, J.O. Olusoji and M.A. Lala

 

Adopting Kurtosis for Condition Monitoring of Subsea Production System

Publisher: AfeBabalola University (http://ajerd.abuad.edu.ng/current-issue/ – Paper 14)”

 

24.

2018

Odesola, O. Ige, A. Alagbe and N.U. Okereke

 

Spatio-temporal Prediction of Spill Crude-based Contaminant Transport through Porous Media”

 

Published:  23/12/2018 on Progress in Industrial Ecology – Journal; Publisher: Inderscience

https://www.inderscienceonline.com/doi/abs/10.1504/PIE.2018.097183

25.

2016

N.U. Okereke, F.Kara, S. Omowunmi, M. Oyawale and I. Adefemi

 

Impact of Increasing Regime Transition in Depth and Diameter on Flow DeepwaterFlowlines and Risers”

 

International Petroleum Technology Conference (IPTC 2015, Qatar); Published by SPE; 2015

 

26.

2014

N.U. Okereke and F. Kara

Numerical Prediction of Slugging Problems in Pipes”

 

 

Published by Penwell, 2014; Deep Offshore Technology International (DOTI 2014)

 

Research/Publication Links

ORCID: 

Research Gate Profile URL: 

Google Scholar Page: https://scholar.google.com/citations?user=KmAtdlUAAAAJ&hl=en