Zeph Onwu

Zeph Onwu Email and Phone Number

Sennior Consultant Reservoir and Well Test Engineer @ PetroVision Energy Services Limited
Nigeria
Zeph Onwu's Location
Nigeria, Nigeria
Zeph Onwu's Contact Details

Zeph Onwu personal email

About Zeph Onwu

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Zeph Onwu's Current Company Details
PetroVision Energy Services Limited

Petrovision Energy Services Limited

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Sennior Consultant Reservoir and Well Test Engineer
Nigeria
Website:
petro-vision.com
Zeph Onwu Work Experience Details
  • Petrovision Energy Services Limited
    Sennior Consultant Reservoir And Well Test Engineer
    Petrovision Energy Services Limited
    Nigeria
  • Petrovision Energy Services Limited
    Sennior Consultant Reservoir/Well Test Engineer
    Petrovision Energy Services Limited Mar 2013 - Present
    Cape Town South Africa (Petro Sa)
    o Prepared FO.09P reservoir Engineering Well Test Programme which includes FO-09P Completion and Perforation, DST Programme Sequence of Events, Perforation, Flow Clean-up, Modified Isochonal Well Testing and final build-up, Sampling, General PVT Sampling Instructions, Onsite Sampling and General offshore safety observations. Directed and Supervised all DST activities.o Well test designed of FO-09P horizontal gas well with HPHT using a horizontal well model in a multiple layered… Show more o Prepared FO.09P reservoir Engineering Well Test Programme which includes FO-09P Completion and Perforation, DST Programme Sequence of Events, Perforation, Flow Clean-up, Modified Isochonal Well Testing and final build-up, Sampling, General PVT Sampling Instructions, Onsite Sampling and General offshore safety observations. Directed and Supervised all DST activities.o Well test designed of FO-09P horizontal gas well with HPHT using a horizontal well model in a multiple layered reservoir. A long horizontal section of more than 2000 m cutting across more than 8 layers of heterogeneous reservoir with varying permeability ranging from less than 0.01 mD to more than 100 mD. Pressure and Temperature value were 7792 psia and 155 deg.C respectively.o Designed offshore field reporting format for FO-09P well.o Supervised Expro Well Test Crew in offshore location for well test operation and sampling.o Supervised all well test operations of FO-09P horizontal gas well, Sampling, Data acquisition, supervised Schlumberger and Expro gauges and data Lab.o Quality check data acquired by Schlumberger down-hole gauges and Expro surface gauge data.o Analysed Down-Hole pressure data of the Modified Isochronal test as well as the final build-up pressure data using Saphire software.o Generated results which suggests well deliverability as well as reservoir characterization using Saphire software. Show less
  • Oil And Gas
    Senior Reservoir Engineer
    Oil And Gas Aug 2007 - Apr 2009
    Lagos Nigeria
    I carried out reservoir engineering jobs like field planning, Reserve evaluation, Reservoir management, surface facility management, classical reservoir engineering jobs, production forcast and material balance, well test programming, well test design, and supervision of welltest activities in the field (both onshore and offshore). well test analysis of pressure transients using Ecrin Saphire software, pansystem etc. Production simulation using Pipe Sim. Forcast using Prospare and Oil Field… Show more I carried out reservoir engineering jobs like field planning, Reserve evaluation, Reservoir management, surface facility management, classical reservoir engineering jobs, production forcast and material balance, well test programming, well test design, and supervision of welltest activities in the field (both onshore and offshore). well test analysis of pressure transients using Ecrin Saphire software, pansystem etc. Production simulation using Pipe Sim. Forcast using Prospare and Oil Field Manager (OFM) softwares. Supervision of DST jobs both in onshore and offshore fields. Collection of samples for laboratory examinations or test. I have more than 15 years working experience in oil and gas industry and have covered a lot in the area. Show less
  • Schlumberger Technical Inc.
    Senior Reservoir Engineer
    Schlumberger Technical Inc. Aug 2007 - Apr 2009
    Luanda Angola
    I worked for Schlumberger Technical Services Inco. I participated in E-M field study project of Petro SA South Africa, ESP project of Chevron in Cabinda Angola in addition to being in charge of Pressure Transient Analysis, Programming, Designing and Supervision of DST jobs and all testing jobs. I also engaged in production analysis as well as production forecast. Reserve evaluation and estimation. I am proficient in the use of many reservoir engineering software like; Many Eclipse Modules like… Show more I worked for Schlumberger Technical Services Inco. I participated in E-M field study project of Petro SA South Africa, ESP project of Chevron in Cabinda Angola in addition to being in charge of Pressure Transient Analysis, Programming, Designing and Supervision of DST jobs and all testing jobs. I also engaged in production analysis as well as production forecast. Reserve evaluation and estimation. I am proficient in the use of many reservoir engineering software like; Many Eclipse Modules like PVTi and the rest, OFM, Ecrin suite of programs: Saphir, Topaze for production analysis. Also Mbal, Prosper, PIPSIM, PANSYSTEM, FAST Welltest,etc. I also know much in about perforation techniques and gun selection (underbalanced, overbalance, dynamic underbalanced techniques of perforation). Show less
  • Schlumberger Technical Services Inc
    Senior Reservoir Engineer
    Schlumberger Technical Services Inc Aug 2007 - Apr 2009
    Luanda Angola
    I carried out reservoir engineering jobs like field planning, reserve evaluation, reservoir management, surface facility management, classical reservoir engineering jobs, production forecast and material balance, well test programming, well test design, and supervision of welltest activities in the field (both onshore and offshore). well test analysis of pressure transients using Ecrin Saphire software, pansystem etc. Production simulation using Pipe Sim. Forcast using Prospare and Oil Field… Show more I carried out reservoir engineering jobs like field planning, reserve evaluation, reservoir management, surface facility management, classical reservoir engineering jobs, production forecast and material balance, well test programming, well test design, and supervision of welltest activities in the field (both onshore and offshore). well test analysis of pressure transients using Ecrin Saphire software, pansystem etc. Production simulation using Pipe Sim. Forcast using Prospare and Oil Field Manager (OFM) softwares. Supervision of DST jobs both in onshore and offshore fields. Collection of samples for laboratory examinations or test. I have more than 15 years working experience in oil and gas industry and have covered a lot in the area. Show less
  • Shell Petroleum Development Company Nigeria Limited
    Reservoir Engineer (Contract)
    Shell Petroleum Development Company Nigeria Limited Jul 1996 - Jul 2007
    • I prepared flowing and static gradient/build-up test program proposals which wire-line operators follow as guide during acquisition of data in the field. Program proposals were also designed to pre-empt pressure responses and data behaviour prior to survey.• The data on arrival from the field, I carried out quality check (QC) on both electronic gauges and acquired data prior to accepting bottom hole pressure (BHP) surveys using K-plot & Sapphire ( Kappa Engineering Software) and… Show more • I prepared flowing and static gradient/build-up test program proposals which wire-line operators follow as guide during acquisition of data in the field. Program proposals were also designed to pre-empt pressure responses and data behaviour prior to survey.• The data on arrival from the field, I carried out quality check (QC) on both electronic gauges and acquired data prior to accepting bottom hole pressure (BHP) surveys using K-plot & Sapphire ( Kappa Engineering Software) and Pansystem Software (Edinburgh Petroleum Services software.• As a consultant, I advise client on acceptability and /or rejection of data acquired with the gauges used to run the survey as well as advice on the degree of integrity of gauges used during BHP surveys based on quality check results.• From the static plot, I determine fluid distribution in the wellbore which also aid decision on the location of fluid contacts.• Performed well test analysis of vertical and horizontal wells using software such as Sapphire(Kappa Engineering, France), Ecrin , Pansystem Software (Edinburgh Petroleum Services Ltd) and Fast Well test Software (FEKETE). I have done BHP analysis for more than five hundred (500) oil wells of Shell Petroleum Development Company of Nigeria.• I performed multi-rate gas well-test analysis. I analysed three gas wells for Shell Petroleum Development Company of Nigeria. The wells are; Bonny 26T , Utorogu 27T and 31T.• I supervised re-entry and DST operation of Moni Pulo Limited, Offshore Rig, and Cross River Well 1 Gas Discovery Well of OML114 Offshore Nigeria. 7 DSTs and 7 Flow-After-Flow Multi-rate tests were carried out in the Rig. • Reserve Calculation software (proteus). • Performed decline curve analysis (DCA) using Oil Field Manager (OFM).•Generated Inflow Performance Relationship (IPR) plots , Vertical Lift Performance (VLP) plots and also VLP/IPR curves to obtain optimum performance values in the life of a producing well.• Show less

Zeph Onwu Skills

Reservoir Management Reservoir Engineering Onshore Well Testing Petroleum Engineering Oilfield Upstream Formation Evaluation Saphir Offshore Drilling Oil And Gas Industry Mbal Pressure Prosperity Pressure Transient Analysis Project Planning Testing Material Balance Field Development

Zeph Onwu Education Details

  • Delta State University (Ng)
    Delta State University (Ng)
    Master’S Degree
  • Delta State University Abraka (Master Degree)/ Institute Of Management And Tech. Enugu (Hnd)
    Delta State University Abraka (Master Degree)/ Institute Of Management And Tech. Enugu (Hnd)
    Energy And Petroleum Economic/Chemical Engineering

Frequently Asked Questions about Zeph Onwu

What company does Zeph Onwu work for?

Zeph Onwu works for Petrovision Energy Services Limited

What is Zeph Onwu's role at the current company?

Zeph Onwu's current role is Sennior Consultant Reservoir and Well Test Engineer.

What is Zeph Onwu's email address?

Zeph Onwu's email address is ze****@****hoo.com

What schools did Zeph Onwu attend?

Zeph Onwu attended Delta State University (Ng), Delta State University Abraka (Master Degree)/ Institute Of Management And Tech. Enugu (Hnd).

What skills is Zeph Onwu known for?

Zeph Onwu has skills like Reservoir Management, Reservoir Engineering, Onshore, Well Testing, Petroleum Engineering, Oilfield, Upstream, Formation Evaluation, Saphir, Offshore Drilling, Oil And Gas Industry, Mbal.

Who are Zeph Onwu's colleagues?

Zeph Onwu's colleagues are Aisha Ogbechie, Ayeuyen Tibiebi Henry, Umar Ngala, Seyi Fapohunda, Mbinaye K., Reza Nazarian, Abhen Pather.

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