This document contains the resume of Chisom Aloysius Okereke. It summarizes his professional experience working as a senior workover engineer and well site geologist on offshore and onshore oil projects in Nigeria. It also lists his educational qualifications including a BSc in Geological Sciences and safety and technical training certificates. His skills include experience in well intervention operations, pressure testing, artificial lift, and basic geological interpretation.

1. OKEREKE, CHISOM ALOYSIUS
18 Akwaka Road, Rumodoaya, PorHarcourt , Rivers State.
Tel: +2348035758264, +2348034004758, E-mail: chysomao@yahoo.co.uk
CareerObjective: Seeking a challenging position in a dynamic, progressive
and fulfilling working environment that is mutually
beneficial to employer, employees and customers
Skills:
 Experience in Completion and Workover, procedures,
follow up and execution
 Experience in well intervention, data acquisition
procedures and data interpretation.
 Well Control Operations
 Mud Engineering/ Pumping Operations( With High
pressure pumps like ZB400, High Volume Pumps Like F-
800 etc)
 Experience in Pressure Testing (Well head, BOP’S etc).
 Conversant with Casing Operation and Tubular running
 Conversant with Fishing Operations.
 Experience in artificial lift ( gas lift and electrical
submersible pump)
 Basic Wire Line and Mud logging interpretation
 Basic Well Site Operations
 Well to Well correlation
 Basic Geological interpretation using Stratworks and Map
Application
 Proficiency in Microsoft Office Application
 Experience in Onshore and Offshore Safety Applications
Qualities:
 Innovative and Uncompromising Integrity
 Honest, Dedicated and Efficient
 Ability to work with little or no supervision
 A team player with good interpersonal and communication
skills
 Good Discerning and Analytical mind.

2. PERSONAL DATA:
DATE OF BIRTH: 19TH August, 1978
MARITAL STATUS: Married
SEX: Male
RELIGION: Christianity
LOCAL GOVT. AREA: Obowo L.G.A
STATE OF ORIGIN: Imo
NATIONALITY: Nigeria
EDUCATIONAL QUALIFICATIONS/DATES
 Nnamdi Azikiwe University, Awka, Anambra State 2001
Bachelor of Science (B.Sc) Geological Sciences
(Second Class Division – 3.41)
 National Youth Service Corps 2003
N.Y.S.C. Discharge Certificate
 Community Secondary School, Ikenanzizi, Obowo 1992
Senior School Certificate Examination
General Certificate of Education 1995
 Ekeala Primary School, Ikenanzizi, Obowo 1987
First School Leaving Certificate
 Well Control School (WCS) 2013
International Association of Drilling Contractors (IADC) Certificate
COURSES / TRAININGS ATTENDED
Certificate of Safety Training, Survival At Sea & Helicopter Underwater Escape Training (SAS &
HUET), OPEANS Safety Training Centre, as set forth by International Association of Drilling
Contractors (IADC) and Department of Petroleum Resources (DPR) training requirements, 2010
Survival At Sea (S.A.S) Course / Helicopter Underwater Escape Training (HUET), Hydrogen Sulphide
(H2S) Safety Awareness Course, Safety Centre International Ltd., (Member of British Safety Council),
2010
Well Control Course (IADC) - 2013

3. EMPLOYMENT/EXPERIENCES & DATES
TECON OIL SERVICES LTD: Dec 2009-Till DATE.
Position: SENIOR WORKOVER ENGINEER
(Hydraulic work over/Completion Operations)
 Involved in several well workover and stimulation such as acidizing hydraulic fracturing
as a means of enhancing well productivity (Land and Swamp operations).
 Involved with re-entry and workover programme planning and execution- these involved
the pulling out of production pipes and Running –in of new ones with Gas lift mandrel to
enhance production.
 Involved in rigging up and down of snubbing unit and workover equipment.
 Taking part in lining up wire line/snubbing equipment for snubbing operations like sand
washing , formation fracturing, circulation etc, operating the snubbing unit during POOH
and RIH ,Circulation and washing activities.
 Lining –up/ preparing of BHA such as seal Assy , locators, parkers ,GLM , X –overs ,XA
Sleeve , mule shoe etc. for well completions.
 Playing active role in the maintenance of the HWO unit (every four months) at the Tecon
base, rigging up of power hoses for the Jack, power tong counter balance winch.
 General Maintenance of the Pumping equipment like the Triplex Pump, Centrifugal
Pump, Wooden Pump (Diaphragm Pump), etc.
 Using the Pumping Equipment like Triplex Pump, Centrifugal to perform different down
hole Operation like Setting of Packer at the desire Depth, Well Kill Operation, well
cleaning operation and well control operation etc.
 Play active part in the mobilization of the pumping Accessories like the Chicksan (loop,
Swivel etc), Butterfly Valve Check Valve, Plug Valve etc.
 Keeping a data base of our Inventory.
 Making presentations to clients on company service

4. Client: Nigeria Agip Oil Co. (NAOC). Location: OML 61, Ebocha, Nigeria. Well: Mgbede 5
(onshore). HWU: 460K Hydrastar II.
Sept 2009 - Nov 2009
Initial completion, to produce non-associated gas for NLNG and to optimize condensate
recovery from the pay zone.
Client: Nigeria Agip Oil Co. (NAOC). Location: OML 63, Nigeria. Well: Pirigbene SE-1T
(swamp). HWU: 340K Jack Hardy.
Sept 2009 - Nov 2009
Retrieval of old dual completion tubings. Well bore cleanout. RST logging. Re-completion with
single string + ESP
Client: Shell Petroleum Development Co. (SPDC). Location: OML 45, Forcados Yokri, Nigeria.
Well: Forc-121T (estuary/offshore). HWU: 460K Hydrastar II.
May 2013 - June 2013
To make well integral by changing out the leaking tubing and averting high casing pressure
Client: Shell Petroleum Development Co. (SPDC). Location: OML 17, Nigeria. Well: Apara-01
(onshore). Units: 225K Nigerblossom, Dual Stage Platform Casing Jack.
May 2013 - June 2013
Plug and abandonment operation. To decommission the well which was completed on the
Q1.000D sand interval by installing permanent barriers to effectively isolate fresh water
reservoirs from hydrocarbon bearing reservoirs, in an environmentally safe manner, and
subsequently restore the surface location as close as possible to its original state where
possible.
Client: Prime Exploration and Production Ltd. Location: OML 11, Asaramatoru, Nigeria. Well:
Asaramatoru-1. HWU: 460K Hydrastar II.
Nov 2011 - June 2012
To complete the well as dual string. 3½" long string to produce U1 and U2 sands. Gravel pack
M9.7 sand and produce with 2⅞" short string.
Client: Orient Petroleum Resources PLC. Location: OPL 915, Anambra, Nigeria. Well: Anar-1
(onshore). Rig: Nigerblossom Rig 101 (1000HP)
Nov 2011 - Mar 2012
Initial completion, to produce oil and gas from the pay zone safely. Wellbore clean out,
perforation of sand intervals as per well program.
Client: Eni Congo. Location: Mboundi, Republic of Congo
HWU: 340K Jack Hardy II
Feb 2010 - Nov 2010
Onshore campaign: To recover the current upper completion string, mill and fish the permanent
packer, abandon the deepest perforated interval and complete the well with 3½" tubing . Each oil
well, worked over and re-completed is configured with ESP. Workover/Completion activities
carried out in over 70 wells including MBD711D, MBD701D, MBD700D, MBD505 etc.

5. WORKOVER ENGINEER Jul 2009 – Dec 2009
- Interpretation of workover/completion programs;
- Function testing and operation of Hydraulic Workover Unit (HWU)( as Assistant Jack Opt. /Jack
Operator)
- Pressure testing of well control equipment and surface lines;
- Troubleshooting and maintenance of workover and well control equipment
FUTURE CONCERNS NIGERIA LIMITED 2003 -2009
Position Held : Operation Assistant/Safety Officer
Job Duties :
- Making international Purchase order.(P.O)
- Arranging all deliveries made in a day/week/month
- Act as liason officer between customer and our company.
- Well tracking of our product Inventory with respect to ordering and restocking
- Working together with MD/Opt Mgr on new customer and new product line.
- Present safety talk to my colleagues and customer in general.
PAN OCEAN OIL CORPORATION (Nigeria) 2002 – 2003
(Operator of POOC/NNPC Joint Venture)
Plot 17, Ligali Ayorinde Street,
Victoria Island, Lagos
Position Held: Well Site Geologist
Job Functions:
 Well site Geological correlations and basic quality evaluation of open-hole log.
 Generation of Daily Well site Geological report and end of well reports.
 Basic knowledge on the generation of Structural and Stratigraphic Maps for Well
Drilling applications.
 Log interpretation and sample administration.
 Participation in preparation of Geological & Drilling Programmes.
 Preparation of exploration related local purchase order (L.P.O) and completion
Certificates associated with work completion.
 Preparation of exploration weekly and monthly activity report for DPR.
 Ensuring that service companies keeps to the laid down policies and regulations
 Participation in evaluation of exploration tenders and bid proposals from
Vendors.

6.  SAINT MICHAEL COMPREHENSIVE SECONDARYSCHOOL
ABA ABIA STATE.
Position Held: Science Teacher
Job Function:
Teaching Mathematics to Senior Classes 2001
PUBLICATIONS AND RESEARCH PROJECT
 The role of Salt and Shale in Hydrocarbon Maturation(Seminar Topic) 2000
 Geology of Lekwesi and its Environs in Abia State (B.Sc Thesis) 2000
 Geological Field Mapping of Afikpo and Environs 1999
INSTITUTIONS/PROFESSIONAL BACKGROUND
 Nigeria Association of Geosciences and Mining (NAGAMS) Student Member
 Nigeria Association of Petroleum Explorationist (NAPE) Member
 International Association of Drilling Contractors (IADC) Certified Member
TECHNICAL MEETINGS ATTENDED
 Exploration and Production industry performance, improvements Required, process and
technical changes organized by NAPE (Feb, 2003)
 OPTS (Exploration) monthly technical meeting (August, 2003)
HOBBIES
Football, Reading, Traveling.

7. REFEREES
Engr. Philip O. Chukwu Mr. James Ukandu
Director Petroleum Production Exploration Department
NNPC Nigeria Agip Oil Co Ltd, PH.
Abuja
Mr. N.V. Amaku Mr. Cosmas Iwueze
Diplomat Chevron Nigeria Limited
Ministry of External Affairs 2 Chevron Drive, Epe Expressway
Abuja. Lagos.