Tombeuh Dokoula

Over 23 years working in different positions in both Drilling and production Oil and Gas industries with very deep knowledge, skills and upstream chemicals laboratory technical experiences accompany with expertise in Production Optimization, Flow Assurance, Process System Integrity management, Pipeline Integrity Management, Waste Management and Environment CARE, I recently foundered and I am managing my own Expertise Cabinet named “Tchad Chemicals and Services”, TCS and I also achieved many challenges in the above domains. Within the 23 years, I spent 4 years in downstream with Pride Forasol Drilling Company (ExxonMobil Chad) and over 19 years in upstream with Baker Hughes Product Chemical Company at ExxonMobil Chad Kome field. I am very interpersonal collaborator, very good team leader with very good team work ethics, fast leaner with good language skills.

• 2019, Role Readiness Champion in Dubai EHE Center
• Gas Conditioning in UK/Liverpool: Introduction to Natural Gas Natural Gas Handling Processing Dehydration of Natural Gas Hydrates Natural Gas Amine Sweetening Natural Gas Corrosion Hydrogen Sulfide scavenging Chemical Applications – Offshore RESTORE Wellbore Remediation Program
• 2012, Team Lead Program Training in Cape Town, South Africa
• 2010, Training in Dubai Baker Petrolite Training Center on: 1. Gas Conditioning Technology:
• Natural Gas Handling and Processing Gas Conditioning- Hydrates Alkanol Amine Sweetening Gas Conditioning- Natural Corrosion Hydrogen Sulfide- Application Technology Gas Compression Natural Gas Storage and Reinjection Condensate Stabilization Natural Gas Dehydration 2. Hydrate Inhibitor: Introduction Problems Caused by Hydrates Plug Remediation Prevention of Hydrates Plugs Kinetic hydrate Inhibitors Anti-Agglomerants Making Recommendation Evaluation LDHI Gas Gravity Charts Background Information KHI Case Histories AA Case Histories Product Data Sheets Publications Conversion Factors 3. Foamers:
• Theory of Fome
• Product Grid Product Selection Computer Assisted Selection Foamers Treatment, Application, and Monitoring Troobleshooting 4. - Emulsion Water Clarification
• 2009, Training in Dubai Baker Petrolite Training Center on: 1. Microbiology:
• Corrosion Basic Microbiology Bacteria related Oilfield Problems Biocide Product Line Biocide Selection and Application Microbiology Sampling Monitoring Bacterial Control Program 2. Gas Conditioning Technology:
• Natural Gas Handling and Processing Gas Conditioning- Hydrates Alkanol Amine Sweetening Gas Conditioning- Natural Corrosion Hydrogen Sulfide- Application Technology Gas Compression Natural Gas Storage and Reinjection Condensate Stabilization Natural Gas Dehydration 3. Corrosion:
• Corrosion Inhibitor Characteristics and Chemistries Treating Flow Lines Production and Water Treatment facilities Corrosion Monitoring Inhibitor testing Review of Corrosion Control
• 2009, Refreshment for IATA and IMDG for Dangerous Good Transportation
• 2007, Training in Chad and Egypt:
• Engage class at Cairo (Egypt) Assessor Certification (Chad) Certified in Dangerous Goods Transportation by Air and Sea (Chad)
• 2006, Training course at Cairo, Egypt on: 1-Oil Field Technology:
• Bacteria, Corrosion, Demulsification and Water Clarification, Paraffin and Asphaltenes, Scale. 2-Flow Assurance Course:
• Africa Deepwater Developments Flow Assurance Strategies & Costs Multiphase Flow Hydrate Management Paraffin and Asphaltene Management Scale Management
• Subsea Chemical Requirement 3-Consultative Skills:
• The Selling Process and The Driving Principle Fundamental Selling Skills Fundamental Selling Skills: Handling Objection Opening and Concluding Sales Calls Advancing the Sale: Capability Statements Advancing the Sale: Exploring Need, Consequences & Payoffs Advancing the Sale: Exploring Options Advancing the Sale: Presenting Solutions Advancing the Sale: Closing the Sale
• 2003, First Aids training at Kome base (Chad), Stop Method (safety) training at Meridien Hotel at N’djamena (Chad)
• 2004, Industry Electricity (General Electricity, Electrical engineering) training at N’djamena University training Center
• 2004, Refrigeration training: Air conditioning at Technical school at N’Djamena

• 1999-2000 Master’s degree (Honor) in Physics and Chemistry Sciences and Technology University of Bangui (Central African Republic)
• 1998-1999 Bachelor’s degree 3 in Physics and Chemistry Sciences and Technology University of Bangui (Central African Republic)
• 1994-1995 High Certificate of Sciences Education (Baccalaureate C)

Reading, watching TV, traveling, foot-ball, basketball, listen to the music, working-out.

• 03/01/23, when Tchad Petroleum Company or TPC at Kome Chad field is having demulsifers rupture, I successfully blended a demulsifier using two different demulsifiers with xylene that achieved the water separation by meeting pipeline oil water content specifications. This blend named DMO DOK-1 has helped in performance and quantity that prevented TPC from shutting down the Industry due to Oil/Water separation issues
• 08/01/21, Successfully assessed, investigate, redesign and restore the ExxonMobil Oily Water Lift Station OWLS biocide system injection- LEAD AWARD
• 02/01/21, successfully assessed and conduct Lab testing to address Rag Layer issue to increase production, obtain good oil quality for Crude Firing to the Turbines as well as engage the customer to a holist approach of solving this issue- CARE AWARD
• 10/01/20, Great Contribution to ESSO Operations at Kome: Customer - Esso was facing challenges with crude transfer issue in June/July and the Superintendent asked me to help. I conducted lab work and came up with the idea of adding diesel to the crude stream to mitigate the foaming issue as well as reducing viscosity. This idea was implemented and the power turbines were started smoothly and this has been incorporated into the SOP for starting up the turbines and Esso is now benefiting from it. This has really helped Esso to minimize the diesel cost! – COLLABORATE AWARD
• 10/01/19, Tracer Sampling successfully completed in Kome ESSO Chad field - DRIVING CUSTOMER OUTCOMES AWARD
• 06/01/17, 2016 Safety Award giving by ExxonMobil- PERFORMANCE AWARD
• 05/01/14, successfully translate all Training module into French version, initiated and support several customer technical training sessions conducted for the wider Central Africa UC geomarkets and has been considered as a great example aligned towards BHI's Core Values (Teamwork) - TEAMWORK AWARD

(+235)66 20 92 31/WhatsApp

• 2019, 2023, Technical Support Specialist, Assigned to ExxonMobil Laboratory to advice (as advisor) after lab testing on: Process oil/water separation issues, Pipeline oil quality and specification, assess and redesign all chemicals injection systems, scale plugging issues, foam issues, corrosion issues… Laboratory Chemicals blending or modification to address specific issues Proactive on all production process issues Participating in Process Production meeting with Production Superintendent and Operations Superintendent Chemical injection and Inventory Provide daily report to Production Superintendent Controlling calcium on daily basis using Spectroil Machine for Turbines fuel
• 2010, 2018, Field and Laboratory Supervisor I, Baker Laboratory Supervisor Laboratory procedures writing and revaluation Lab supply ordering and inventory All Lab apparatus maintenance calibration Lab Assessment on procedures Dangerous Goods classification, packing, labeling and documentation Signature Train and assess new hiring on field and laboratory Procedures
• 2008, 2012-Present, Senior Technical Service and Sell Representative, Generate and interpret laboratory data, writing technical report with recommendation and hold Corrosion Management Team Meeting with the customer. Elaborate and discuss projects to meet Client needs. Responsibilities Service existing accounts, obtains orders, and establish new accounts by planning and organizing daily work schedules to explore existing or potential sales opportunities. Conduct sales presentations based on sales opportunities. Focus sales efforts by analyzing customer demand and potential demand in related markets sectors. Submit documents for orders. Keep management informed by submitting activity and results reports, such as daily call reports, weekly work plans and monthly and annual sales analyses. Monitor competition by gathering current marketplace information on pricing, new products, delivery schedules, merchandising techniques, etc. Recommend changes in products, service, and policy by evaluating results and competitive developments. Resolve customer complaints by investigating problems; developing solutions; preparing reports; making recommendations to management. Maintain professional and technical knowledge by attending educational workshops; reviewing professional publications; establishing personal networks; participating in professional societies. Provide historical records by maintaining records on customer sales. Contribute to team effort to ensure targets are met. Determine the customer's needs, provide complete and appropriate solutions to achieve sales goal and maximize customer satisfaction. Dangerous Goods classification, packing, labeling and documentation Signature
• 2007, 2008, Field Technician IV, Bottle testing to select product, dosage rate for field trial and troubleshooting oil treatment problems and to improve water quality e.g. - Demulsifier bottle testing - Water clarifier bottle testing Products compatibility test Corrosion monitoring and surveillance e.g. - Bacteria testing: Sulfate Reducing Bacteria or SRB, Acid Producing Bacteria or APB, General Aerobic Bacteria or GAB, Nitrate Reducing Bacteria or NRB - Coupon: Flat and round coupon analysis - Perform Corrosion Inhibitor Compatibility test (Foam forming test, Emulsion tendency test) - Batch treatment: biocide - Corrosion inhibitor injection. Corrosion Inhibitor Calibration Curve prepared for Corrosin Inhibitor Residual monitoring - Diesel fuel microorganism testing Participate in pigging program for solids sampling, sessile and planktonic sampling for bacteria testing and iron count - Emulsion lines pigging - Gas lines pigging - Water injection lines pigging - Perform Corrosion Residual Test
• Flow Assurance e.g -Paraffin or wax, asphaltene dispersant test and identification test -Scale identification test, chemical recommendation for continuous or squeeze treatments. Scale Inhibitor Calibration Curve preparation for Scale Residual monitoring Writing technical report with recommendation, input data in Excel work sheet and update graphs Prepare, plan and hold Corrosion Management Team Meeting. Attend to field Chemical Team Meeting Organize training program, train and assess new hiring for field and lab work.
• 2006, 2007, Field Technician III, After completing a Field Review and advancing to Field Technician III I am responsible for providing broader range of chemical applications and services leading to increased revenue as well as increased knowledge. Instructor-led training focused on expanding scope of core and specialty products and services Structured on the-job training and e-learning focused on increasing proficiency of skills and expanding of both core and advanced products and services. Enterprise level training consisting of project management, assertive communication, and industry finance including Baker Value Added (BVA) on team lead, leadership, and behavioral skills Completed assigned project. Project may be technical paper, case study, or other significant undertaking which benefits the company Coordinate all routine laboratory testing or request testing e.g. - Oil: BS&W, Viscosity, API, flash point, Pour point testing... - Water: water chemistry, water analysis, bacteria testing ... - Gas: H2S, paraffin (condensate), CO2 for partial pressure and corrosion predication, iron count Demulsifier and water clarifier bottle testing on wells and manifolds and produced water for troubleshooting Oil testing (API Gravity, Viscosity, Pour point, Asphaltene confirmation, Calcium Naphthenate and wax) Bacteria monitoring (Aerobic and Anaerobic bacteria quantification by serial dilution, detection of sessile bacteria from pigging of the lines) Produced Gas Compressor and Vapor Recovery Unit survey (pH, CO2, dissolved oxygen, soluble iron, H2S and temperature) Attend to EXXO MOBIL Control Room Operations morning meeting and report my Company
• 2005, 2006, Field Technician II, After completing the Field Review and advancing to Field Technician II, I am responsible for generation of revenue: Instructor-led training focused on expanding scope of core and specialty products and services Structured on the-job training and e-learning focused on increasing proficiency of skills and expanding of both core and advanced products and services. Enterprise level training focused on team lead, leadership, and behavioral skills Field Responsibilities Profiling Free Water Knockout Tanks to determine gas, oil and water phases and report to the Control Room; Testing oil from Free Water Knockout Tanks first and second stages to the Emulsion Tank and from the Treaters to the pipeline for Basic Sediment and Water (BS&W); Total Oil and Grease (TOG) testing on produced water; Running water clarification demand test to change the water clarifier chemical rate to reduce Total Oil and Grease (TOG) injected Produced and Injected water analysis (pH, Chloride, Soluble and Total Iron, Dissolved Oxygen, Alkalinity, Total Hardness, Calcium Iron, Conductivity, Turbidity, Total Suspended Solids, Membrane Filtration, Gas Testing...) Turbines cooling and Hot water system testing (pH, Total Iron, Nitrite, Molibdate Analysis by Hach Method) and chemical injections Attend to the Contractors Monthly Safety Meeting
• 2004, 2005, Field Technician I, As Field Technician I, focusing on safety and field operational skills and develop a limited scope of technical product and service skills Required Training Activities Met or exceed the business and development goals established during the performance process Met all technical training requirements met proficiency requirements for assigned technical, leadership, behavioral, and business skills Formal Field Review Well testing for Basic Sediment and Water (BS&W) and emulsion contain Installation and connection of chemical for emulsion breaker injection; Daily chemical checking H2S testing on new wells Chemical Inventory
• 2001, 2004, Rig Electrician, Disconnect and connect electrical cable during Rig down and Rig up Preventive Maintenance electrical equipments and troubleshooting electrical problems

• Upstream Chemicals oil and Gas Laboratory works and supervising
• Upstream Chemicals oil and Gas Laboratory chemicals blending or modification to address specific issues
• Upstream Chemicals oil and Gas Production Optimization: Demulsifiers, Reverse Breakers/Water Clarifiers, Flocculants/Polishers chemical selections, system injection design and products application
• Upstream Chemicals oil and Gas Flow Assurance: Paraffin/Wax/ Inhibitors and Pour-Point Depressants PPD, Wax dispersant, Scale/scale Inhibitors, scale removals, and scale Inhibitors squeeze treatment, Asphaltene/Dispersants and Inhibitors , Foam/Defoamers and Antifoams, Gas Hydrate/Chemical Prevention of Hydrate Plugging, Kinetic Hydrate Inhibitors, Anti-Agglomerants, and Hydrate Plug Removal, Naphthenate and other Carboxylate Fouling, Sand/Chemical Sand Control
• Upstream Chemicals oil and Gas Production System and Pipeline Integrity Management: Corrosion/Corrosion Control during Production, corrosion inhibitors, Film-Forming Corrosion Inhibitors, Microbiologically Induced corrosion/Bacteria/Biocides, Chemicals for Control of Bacteria, Hydrogen Sulfide/H2S Scavengers, Oxygen/Oxygen Scavengers
• Upstream Chemicals oil and Gas Acid Stimulation: Fracturing Acidizing for Carbonate Formation, Corrosion Inhibitors for Acidizing
• Upstream Chemicals oil and Gas Drag Reducing Agents

• Date of Birth: 11/22/71
• Nationality: Chadian
• Marital Status: Married with 5 children

2023 Demulsifier DMO-DOK-1 lab demulsifiers DMO7038, DMO17X and Xylene blended that worked efficiently for Tchad Petroleum Company, TPC 2020 ExxonMobil Turbines foam issue resolution by blending crude oil and diesel fuel to determine ratio that helped to start turbines and being implemented since 2014 ExxonMobil Crude Oil Firing implementation for calcium removal FLW165 Polisher testing and Field trial Kome Field new demulsifiers project for down whole injection DMO86766.vs.DMO7038 Kome Produced water new water clarification Project RBW5306.vs.RBW264 Biannually Pipeline Chad-Cameroon bacteria surveillance and biocide recommendation Pump Station- I tanks biocide recommendation Oily Water Lift Station water transfer to Wet Oil Tank Project Reservoir Polymer Injection Project Vapor Recovery Units and Gas Compression System CO2 Corrosion Mitigation. Paraffin removal and control of production system Sulfide and Calcium Carbonate Scale removal from the Gas System

Training

2019 Role Readiness Champion in Dubai EHE Center

2018 Gas Conditioning in UK/Liverpool

2012 Team Lead Program Training in Cape Town, South Africa

2010 Training in Dubai Baker Petrolite Training Center on:

1. Gas Conditioning Technology

2. Hydrate Inhibitor

3. Foamers

4. - Emulsion Water Clarification

2009 Training in Dubai Baker Petrolite Training Center on:

1. Microbiology: • Corrosion

2. Gas Conditioning Technology

3. Corrosion: • Corrosion Inhibitor Characteristics and Chemistries

2009 Refreshment for IATA and IMDG for Dangerous Good Transportation

2007 Training in Chad and Egypt: • Engage class at Cairo (Egypt)

· Assessor Certification (Chad)

2006 Training course at Cairo, Egypt on:·

1-Oil Field Technology

2-Flow Assurance Course

2003 First Aids training at Kome base (Chad), Stop Method (safety) training at Meridien Hotel at N’djamena (Chad)

2004 Industry Electricity (General Electricity, Electrical engineering) training at N’djamena University training Center

2004 Refrigeration training: Air conditioning at Technical school at N’Djamena3-Consultative Skills

· Upstream Chemicals oil and Gas Laboratory works and supervising

· Upstream Chemicals oil and Gas Laboratory chemicals blending or modification to address specific issues

· Upstream Chemicals oil and Gas Production Optimization: Demulsifiers, Reverse Breakers/Water Clarifiers, Flocculants/Polishers chemical selections,system injection design and products application

· Upstream Chemicals oil and Gas Flow Assurance: Paraffin/Wax/ Inhibitors and Pour-Point Depressants PPD, Wax dispersant, Scale/scale Inhibitors, scale removals, and scale Inhibitors squeeze treatment, Asphaltene/Dispersants and Inhibitors , Foam/Defoamers and Antifoams, Gas Hydrate/Chemical Prevention of Hydrate Plugging, Kinetic Hydrate Inhibitors, Anti-Agglomerants, and Hydrate Plug Removal, Naphthenate and other Carboxylate Fouling, Sand/Chemical Sand Control

· Upstream Chemicals oil and Gas Production System and Pipeline Integrity Management: Corrosion/Corrosion Control during Production, corrosion inhibitors, Film-Forming Corrosion Inhibitors, Microbiologically Induced corrosion/Bacteria/Biocides, Chemicals for Control of Bacteria, Hydrogen Sulfide/H2S Scavengers, Oxygen/Oxygen Scavengers

· Upstream Chemicals oil and Gas Acid Stimulation: Fracturing Acidizing for Carbonate Formation, Corrosion Inhibitors for Acidizing

· Upstream Chemicals oil and Gas Drag Reducing Agents