PERSONAL DETAILS

Name: Anvar Vohra

Nationality: British

Phone: +971*********

EDUCATION

**** - **** ********** ** ***********, UK

BSc Civil Engineering

CAREER SUMMARY

A highly qualified Reservoir and Simulation Engineer with over 30 years’ varied operating experience working on oil,gas and gas condensate fields of the Middle East, North Africa, Far East and UK. Consultant engineer for 10 years, working for service companies and various operating companies in Abu-Dhabi, Kuwait and Oman. Expertise lies in field development planning, production optimization and reservoir simulation, mostly with carbonate fields. A strong compositional simulation experience with gas condensate fields, mostly in Qatar and Abu-Dhabi fields.

SOFTWARE COMPETENCE

Highly competent with ECLIPSE 100 & 300, Petrel RE, CMG, MEPO, VIP and Nexus Simulators

Excellent grasp of SAPHIR, PROSPER, MBAL, TOPAZE, RUBIS and GAP. User of T navigator

Skilled user of OFM database and reservoir analysis.

WORK HISTORY

FREELANCE CONSULTANT - UPWORK

Jan 2021 – Present

Carrying out work requests from various companies and individuals who seek help in their daily work.

Reservoir data analysis, writing part of technical report, simulation data input for reservoir studies, all work online and work carried out at various times of day, due to time differences.

Feasibility study to investigate the effects of horizontal well lengths, well spacing

A tartan grid sector model was created on Petrel to run many scenarios. Some available data was screened, and other neighbouring field data was input in the model.

FEASIBILITY STUDY OF A FRACTURED UNCOVENTIONAL RESERVOIR

CONSULTANT OMAN

Oct 2022 – Dec 2022

A feasibility study on an unconventional reservoir, shale oil and shale gas, for client in Oman. Gather data; well information, geology structure, TOC, porosity, HC saturation and build a small model to generate forecast with multiple scenarios (spacing, horizontal length, fracture lengths, fracture stages along the horizontal well

Data gathering was requested for a full reservoir study to include:

oFracture Orientation, Fracture Length and Width, Fracture Spacing, Fracture Aperture, Fracture Intensity and Fracture Connectivity.

oTo understand the overall complexity of the fracture network and how they will interact with the surrounding rock formation, how it may impact fluid flow and how fluids will move thru the reservoir thus impacting reservoir performance.

HALLIBURTON (KUWAIT)

Consultant Simulation Engineer

Aug2020 – Nov2020

Working on KOC, Bahrah Field Project

Halliburton charged by KOC to increase production in the Bahrah Field

Commenced a dual completion study to enhance oil production from multiple reservoir

Liased with Geo modeler to construct sector models for the wells containing dual completion option

Sectors had different equilibrium regions and oil water contacts

Utilised Nexus simulator to construct the models

Oil production was increased as a result of dual completion in wells with multiple reservoir

ADNOC, ABU-DHABI

Lead Reservoir Simulation Consultant

April 2019 – July 2019

To conduct a full field simulation study of Thamama C reservoir, to investigate gas storage capacity and use the reservoir storage for swing gas production, during peak demands.

The reservoir has almost reached its full gas production from the gas cap surrounded by a thin oil rim.

To provide a FDP for recycling the gas and maximise oil rim production.

Recommend facilities update requirement

Conduct simulation runs to identify gas rate and volumes that can be injected in

each reservoir.

Define the amount of gas that is able to be retrieved from the stored volumes.

Define the area where to inject the gas/wells.

Opportunities to utilize the existing wells for storage/Production.

Identify potential risks & propose mitigation plan

Identify potential technologies to reduce project cost & maximize value.

Details a revised full field plan for the reservoir.

Define the investment needed in each cases

High-level economics considering the current facilities and upgrade requirements

HALLIBURTON, SAUDI ARABIA

Reservoir Engineering Consultant

February 2017 – Jun 2017

Seconded to KJO, Al-Khafji, review the Khafji model and recommend, further improvements to monitor the water encroachment issues in this very matured field. Write a Scope of Work for a full Subsurface Reservoir Study, including G&G and Reservoir Study requirement for their Limestone Reservoirs. Make 5YBP & 20YBP field development plans to maintain required target rates.

Investigating, artificial lift optimization between gas lift and ESPs, in simulation model. Using classic reservoir engineering analysis technique to investigate water encroachment in field, with logs, TDT data, well test data, production data (oil and water) and all measured pressure data.

RAK PETROLEUM COMPANY

Reservoir Engineering Consultant

August 2015 – December 2015

Temporary assignment to view all RE work processes and work flows and make recommendations at improving these work processes and increase work efficiencies and help improve training procedures for Junior Engineers.

Also revised current Simulation work plans and advise on how to optimise their current Simulation models and remove bottlenecks and train some personnel for modelling work.

TARGET OIL SERVICE COMPANY, OMAN

Reservoir Simulation Consultant

October 2014 – December 2014

ADHOC consultation work to carry out Reservoir Engineering data screening and analysis where required and to build a full field simulation model of the Anbar and Aqeeq Fields as part of the main Sadad Field, for PDO, Oman.

Screened and analysed all available MDT data for the above fields. Estimated the FWL by oil/water gradients.

Screened all available PVT data to obtain essential data for reservoir engineering analysis including material balance and simulation. Estimation using correlations were done, where data is not available. All reservoirs were found to be under-saturated with very low bubble points and therefore compositional analysis was not deemed necessary.

Limited number of pressure tests were carried out and some analysis were already carried out by GSPC. All gauge pressure measurement data will be used for simulation purposes to adjust permeability and pressure for the corresponding fields.

All available production data was screened and made available for input in simulation model.

A material balance study was conducted on all field data using available production and pressure data. The idea was to gauge the size of the surrounding aquifer and also to calculate ultimate recovery where possible.

An initial input data model was constructed using data from all the above 5 fields and OOIP compared with the static model.

WINTERSHALL, UAE

Reservoir Simulation Specialist

June 2013 – June 2014

The objective of the study was to evaluate the prospectivity, resources and risks of a future development of the Shuwaihat field, in conjunction with ADNOC. To review and assess the potential of the field by drilling three data gathering wells and to create a FDP for future development of the field.

Assisted Schlumberger in converting a full field CGM Model to Eclipse 300. Tested and made prediction scenarios.

Analysed all limited available data such core data, log data, SCAL and PVT data and wrote data acquisition program for SCAL study, PVT and welltest studies for the new drill well.

Conceptual Simulation Model Building: a) Constructed Radial Models for AOFP of a well during drilling stage, b) to investigate if condensate banking blockage would reduce productivity of the well, c) Sensitivity of changes in PVT properties of the gas condensate, especially dew point and CGR ratios.

Made simulation runs to test DFN fracture models using both dual porosity and dual permeability options.

The conceptual models handed over to RE to update with new drilling data.

Assisted the Geomodeller in constructing rock types.

KUWAIT ENERGY, KUWAIT

Lead Reservoir Simulation Engineer

October 2012 – May 2013

Looking after the company’s assets in Egypt, Latvia and Yemen.

Carried out MBal modelling work for the above three area assets.

Analysed pressure data for Egypt asset and made recommendations for Interference testing program and Water Injection wells.

Modified the Yemen, Al Nasr Field reserves after updating the simulation model using Petrel RE and Eclipse.

DOLPHIN ENERGY, QATAR

Senior Reservoir/Simulation Engineer

October 2007 – August 2012

Dolphin Energy produces 2BCFPD gas per day from offshore Qatar, for distribution to UAE. The North Field is a very huge gas condensate reservoir.

Constructed a full field compositional simulation model of the Dolphin Area, incorporating all neighbouring fields in Qatar and Iran, using Eclipse 300.

Model was calibrated with MDT, PTA and PLT data of all wells.

A unique technique was used to allocate H2S from two different sources in the field, to derive 11 PVT components for each cell in the reservoir and the North Field.

The history match parameters used were pressures, H2S and CO2 entering the slug-catcher and the final exported product streams such as METHANE, ETHANE, BUTANE, PROPANE and CONDENSATES.

Various prediction scenarios were generated for future field development planning, while managing pressures and fluxes from all the North Field areas.

Scenarios included de-bottlenecking the platform production, de-compression, optimization of condensates and long range production plateau rates.

Make regular presentations to partners (MUBADALA, OCCIDENTAL & TOTAL), higher management and QATAR PETROLEUM.

Team leader in charge of developing young nationals and training them in Reservoir Simulation.

CHEVRON, KUWAIT

Consultant Reservoir Simulation Engineer

February 2007 – October 2007

Updated all current working models created by ETC (Houston) and made prediction scenarios for full field development for SAC fields and JO fields.

Built new simulation models when required to train young Saudi graduates. Set up a Technical Centre for base business requirements. Using GOCAD & ECLIPSE package for E100 and E300 simulation, with parallel processors.

PETRONAS CARIGALI

Senior Reservoir Engineer (Consultant), Malaysia

June 2006 – January 2006

Set up a Black-Oil Simulation Study on two Prospective Small Fields in Offshore Malaysia. To initialize and history match the model with well test data. To conduct a full field development plan with water and gas injection schemes, ready for the facilities dept.

Reservoir is highly compartmentalized and faulted, with multi PVT regions. The field has 4 different sand zones separated from each other and the development will cater for all different zones, separately. Using ECLIPSE package for E100 and E300 simulation, with parallel processors.

ADMA/OPCO, ABU DHABI

Consultant Simulation Engineer

2005 – 2006 (Secondment – Landmark)

Set up Black-oil model for Arab C Reservoir for Joint venture project with BP, TOTAL, ADNOC, ADCO, JODCO and ADOC. History matched the model with well test data, with ECLIPSE 100.

Conducted several scenarios for horizontal, highly deviated and dual lateral wells. Sensitivity scenarios with peripheral water injection, pattern water injection and gas injection development schemes.

Made P10, P50 and P90 scenarios for facilities department. Used Monte Carlos method with Crystal Ball analysis to obtain recovery factors.

Made recommendations to develop the field with pattern and peripheral water injection. Made a sensitivity case run with WAG. Set up a fully compositional model with ECLIPSE 300 for a supercritical gas condensate reservoir in Arab D. Created an EOS from PVT data with 7 components.

Conducted several scenarios of well lengths, pattern sizing and types of lateral wells with sector models.

Conducted several scenarios utilizing peripheral water injection, pattern water injection, miscible pattern gas injection, crestal gas injection and WAG. GORs being high, recommended a pattern gas injection scheme with crestal gas injection to dispose of the high gas production. Made P10, P50 and P90 scenarios for facilities planning. Using Monte Carlos AND Crystal Ball uncertainty analysis and recovery factors. Carried out uncertainty analysis for relative permeability data, water, oil and gas, oil-water contact depths, gas-oil contact depths and permeability data.

Regularly presenting to all shareholders and Management teams.

Converted VIP Model data for ADCO’s Undeveloped Qusahwira field To Eclipse format. Initialised and matched the OOIP and ran full field model data.

Performed various In-house studies to convert an Eclipse model of ADCO’s Asab field to VIP & NEXUS format.

DUBAI PETROLEUM, DUBAI

Staff Reservoir Engineer

2003 – 2005

Team leader of the Thamama Reservoir Characterization Study. The aim was to conduct a full field study and then set up a full field model of the reservoir in this very highly faulted and fractured reservoir. This field is mature and water cuts are very high, hence a comprehensive study to recover by-passed oil and drill wells horizontally.

Team includes a Geologist, Geophysicist and a Geo Modeller. Strong emphasis on Decision and Risk Analysis. Knowledge of RMS geo-model and ability to transfer geo-model to simulation grid by Up scaling techniques and updates. Reserves estimates using Decline Curve Analysis.

Good in analysis of capillary pressure curves, relative permeability data and PVT Sim for model input.

After reservoir study, implement a full field development plan to recover all bypassed oil. Present full FEL1 to FEL3 to management and complete the AFE for each well in portfolio. Recommend wells to drill and steer lateral wells while drilling, to completion.

P10, P50 & P90 profiles based on model results and field performance of other wells. Also recommend wells for re-completion, TDT, MDT pressures to data monitoring programme and increase production.

Created EOS for 7 & 12 components by tuning parameters. Ran compositional simulation study with the EOS to carry out do history match and some development scenarios.

ADCO, ABU DHABI

Reservoir Simulation Consultant

2001 – 2003

Responsible for constructing a full field compositional simulation of the BuHasa Field, with 2.6 million grid cell model. The model had 186 layers and 17 RRTs.

Work included creating capillary pressure curves for each RRT which is based on Facies model. Special algorithms were used to match the log versus depth saturations for each of 520 wells used in the model study. Oil-water and gas-oil relative permeability data derived from Lab data. All data individually matched by Corey’s correlation, both drainage and imbibitions data. TDT data set up for history match.

Production injection history of 39 years and the field has 7 different reservoir units, each requiring its unique production/injection schemes. The reservoir is carbonate and is greatly faulted. The field water injection, peripheral and pattern, miscible gas flooding and WAG flooding with 2 years cycles.

The model will initialised with the geological model and will used to match the historical. Production, injection, pressure, water cut and gas front data.

Production scenarios of 500,000 bopd will used as target rates for this field.

Mentoring 2 UAE national engineers in reservoir management skills and simulation.

ANADARKO PETROLEUM CORP, ALGERIA

Senior Reservoir Engineering Specialist

1998 – 2001

Full responsibility of all Reservoir Engineering discipline activities. Issued integrated work programs with other disciplines.

Integrated with other disciplines in creating drilling schedules until first oil. Input Reservoir Engineering data in FEED design, such as water compatibility, gas availability, water source wells, well satellite locations.

Initiated a full PVT laboratory programme and drafted a full SCAL & MISCIBILTY laboratory programme.

Involved in all MDT programmes for new wells drilled and for fluid sampling.

Analysing all well test carried out on all wells.

Involved in designing the first peripheral water injectivity test for the field.

Design and planning one Miscible Gas Injection Pilot and one WAG injection pilot, using a sector model.

Involved in planning and designing interference testing in field and simulation.

Built a 5-component EOS model and testing its validity with new PVT data.

Analysing all new PVT data and recommending new wells for sampling.

Building a full field MBO simulation model for the field using VIP package. Work involves transferring data from Strata model to VIP via Geolink and generating simulation grid using Gridgenr package. Currently finished the initialisation model and matched OOIP and now matching all DST and all interference tests in the model before making predictions.

Planning with surface the FDP plan and all new drilling schedules.

Carried out a sector model for Horizontal production and Injection well.

Sector modelling for Pattern water injection scheme.

Sector modelling for the different compartmentalisation and change in PVT properties.

Sensitivity model runs using some agreed fault patterns and introducing maximum number of fault patterns to address compartmentalisation within reservoir.

Involved in technical partner meetings and Ministry presentations.

ADCO, ABU DHABI

Senior Reservoir Engineer

1996 – 1998

ADCO is a joint venture consisting of ADNOC (main), BP, SHELL, EXXON, MOBIL, TOTAL & PARTEX. Largest Operating Company in UAE, with oil production of 1 MILLION BOPD.

Initiated, defined and implemented various reservoir management follow-up surveillance programs for two reservoirs, one utilising pattern miscible gas injection and the other utilising pattern water injection. Programme includes pressure monitoring, well tests (PBUs & PFOs), PLT, TDT, RST, MDT and RFT.

Performed reservoir studies utilising structural, isopach maps, stratigraphic cross-sections, well logs, TDT logs and well tests. Diagnosed and recommended remedial work for problematic gas injection and water injection wells and inactive producers (re-completions, re-perforations, stimulation, artificial lift and horizontal wells).

Constructed radial models for early water breakthrough. Cartesian model for gas front monitoring and miscibility and for horizontal gas injection well. Participated in SCAL Workshop for a comprehensive SCAL study programme, involving five reservoirs in the same field.

Recommended and identified area for studies to optimize field development and production programmes. Worked with members of other disciplines to prepare short and long term work programmes, including work over’s, stimulation and Business Plans. Analysed 50 PBU’s and PFO’s test results, using PANSYSTEM package. Designed horizontal gas injection well, using this programme and designed gas commissioning tests, with this package.

Responsible for Data Management of the reservoir, using FINDER and OFM package. Constructed geological model using STRATAMODEL and for cross-sections. Utilising STRATAMODEL for horizontal well trajectory and azimuth. Actively involved in drilling dual-lateral producers and gas injectors in very tight formation.

WAHA OIL COMPANY, LIBYA

Senior Engineering Specialist

1990 – 1996

Formerly known as Oasis Oil Company of California. It is the largest oil company in LIBYA, with production at 0.5 million BOPD.

Constructed single well models for recommending walkovers, such as water shut-offs and recompletions. Constructed a sector model using GENESIS Black oil simulator, to simulate various production scenarios existing in the field. In-charge for reviewing all simulation studies outside LIBYA and worked in close co-ordination with all consultants, to change modify and implement simulation studies for many Waha Oil Co reservoirs.

Worked in close liaison with the Chief Reservoir Engineer and was responsible for designing all testing procedures for bottom hole pressure surveys, PI test surveys, TDT and PLT surveys and all coring programmes. In charge of re-activating all Waha Oil Company long-time shut-in wells, by recommending various methods, such as stimulation, artificial lift and re-pressurising.

Coordinated with data processing department with the design of the company workstation and network system and recommended to purchase ECLIPSE simulator. Tested ECLIPSE simulator, by constructing small sector model in liaison with GEOQUEST computer facilities.

In charge of managing two reservoirs, requiring full pressure build-up for production and designed a water injection scheme for supporting the reservoir. Designed a full reservoir monitoring programme and succeeded in increasing reservoir pressure up to 500 psi, before commencing a step-up production programme. Supervised small training groups for Reservoir Simulation and small studies, to train LIBYAN engineers. In close co-ordination with Waha management on simulation and network issues. Mentored engineers for reservoir simulation using single well models.

Recommended PVT and SCAL studies, in fields where previous data was not available. Co-ordinated two full SCAL studies with Core Lab and one Water Compatibility study, until completion and implementation in the field. Co-ordinated with the department for BI-yearly technical meetings with NOC, LIBYA, by setting up presentations through PC’s and setting up plots and maps etc. on PC’s.

Private Consultancy

1987 – 1989

Set up a private consultant firm, working from home, in London. Had worked on various small, projects such as analysing PBU, PFU and preparing data for small cross-section studies, for various oil companies in London and Aberdeen.

SUADI ARAMCO

Reservoir Simulation Engineer

1981 – 1986

ARAMCO was a consortium of 4 US major oil companies, EXXON, CHEVRON, MOBIL and TEXACO. The company produced in excess of 10 MILLION BOPD, the largest oil company in the world.

Mainly constructed and maintained simulation models for short and long term field development. Constructed 3-D models for Seven Berri Onshore/Offshore Oilfield, using Chevron’s CRS3D simulator and later with Exxon’s GPSIM and MARS simulators. The objective was to study and evaluate different scenarios of peripheral water injection, and gas lift, with given target rates. Obtained approval of development plans and produced comprehensive reports.

Performed numerous prediction cases in liaison with reservoir management team, in fulfilling management needs. Performed numerous studies to optimise infill well locations to identify and produce trapped oil and increase production.

Defined and recommended the reservoir management procedures and programmes to optimize ultimate recovery. Evaluated and modelled water flood advance trends in the main reservoir and implemented production/injection schemes.

Converted the full 3-D model form CRS3D to MARS, for the main ARAB reservoirs. All model work were constructed by inputting all reservoir and geological data, production/injection data, petro-physical data and were history matched and calibrated with the observed field data, before utilising them for prediction scenarios.

BG, UK

Reservoir Engineer (Management Simulation)

1978 – 1981

BRITISH GAS CORP had interests in many North Sea Offshore Oilfields and most of the gas was distributed by them. They had 50% interest in Wytch Farm Onshore Oilfield, together with BP.

Started career as analysing all pressure and field production data and all well test data. Set up a small well database, to cater for all daily field data. Analysed PBU’s and PVT data. Conducted many well tests, pressure surveys and DST and RFT measurements.

Recommended well completion programmes and reservoir monitoring programmes. Set up model data and parameters for 2-D simulation model and later helped in history matching and prediction run to develop the field. Set up a 2-D cross-section model for deriving relative permeability curves to be used in full field model.

Contact this candidate