Geoscience And Reservoir

At GOGS, we have extensive practical knowledge of sedimentary basins and hands-on experience with exploration and appraisal processes. We provide services ranging from single block screening and feasibility studies to larger multi area assessments

We provide world-class petroleum geologists, geophysicists, reservoir engineers, modelers etc., with a wide range of technical skills and expertise, for exploration and development projects/studies, as well as integrated team studies, asset evaluations, basin studies, reservoir modeling and more.

GOGS has supported clients in license rounds and our team can quickly evaluate available blocks, map prospects and leads, assess the risk and uncertainty associated with each element of the petroleum system, and provide work programme support moving forward.

For more details on disciplines within Geoscience and reservoir, see:

  • Geological Services
  • Geophysical Services
  • Integrated Petrophysical Evaluations
  • Reservoir Engineering
  • Asset Evaluation
  • Integrated Basin And Petroleum System Modeling
  • Prospect Generation And Evaluation
  • Reservoir Modeling
  • Field Development Planning
  • Technical Audits
  • Manpower

GEOLOGICAL Services

GOGS is a leading Geological consultancy to companies within the oil and gas industry, mining & water resources. We deliver a range of specialized services for our clients that cross the project life cycle from early-stage exploration through development and operations to closure including; License round block evaluations, regional and basin studies, farm out services and data room evaluations.

Regional geological and integrated basin studies can be conducted in locations around the world, from frontier to mature basins.

Our geoscientists have the hands-on field experience needed to solve your Hydrocarbon exploration problems from regional- to deposit-scale,  including but not limited to:

  • Structural mapping and interpretation
  • Stratigraphic forward modeling/High resolution Sequence Stratigraphy
  • Sedimentology, including detailed core description and petrography
  • Well log interpretation and petrophysics
  • Well correlations
  • Depositional and diagenetic models
  • RESERVOIR quality analysis
  • balanced geological cross sections
  • Geological modeling
  • Rock sampling , soil sampling and water sampling
  • Integrated field studies
  • Conduct field trips
  • Play fairway maps

Geophysical Services

GOGS provides geophysics consultancy  to companies within the Oil and Gas sector.Our geophysicists undertake a wide range of 2D and 3D seismic interpretation projects worldwide, in structurally complex regions or basins or at prospective horizons for hydrocarbons exploration.
The projects realized by GOGS expert have included the evaluation of exploration and production assets in data rooms, Licence Round work, prospect evaluations, Seismic interpretation and field development planning. 

Our consulting projects are executed by integrating all  geophysical modules: Time-Depth Conversion, Well Tie, Depth Structure Mapping ,Seismic Attribute Analysis​,Seismic Sequence Stratigraphy, Seismic Pore Pressure Prediction​,Fault Seal Analysis,AVO modeling and fluid Analysis.​
We performe quantitative geophysical analysis of seismic data for extracting field reservoir properties and fracture orientations information. These data will be integrated with geological and reservoir engineering  data to generate static and dynamic models which helps  our clients minimize risk by optimizing the locations of future exploration, appraisal and production wells.
GOGS provides highly qualified and specialized professional personnel with over 20 years of experience to handle the QA/QC of 2D and 3D seismic data acquisition and processing in many different environmental conditions, from deep water marine to shallow marine and on land.
Our consulting staff performs a full HSE audit to ensure compliance by the contractor company.
Our experts are:

  • Onshore QA/QC representative/Seismic Project Manager
  • Seismic Acquisition QA/QC Consultant
  • Navigation Data QA/QC Consultant
  • On-board Seismic Processing QA/QC Consultant
  • Seismic Technical Auditor

Integrated Petrophysical Evaluations

GOGS provides a complete suite of petrophysical interpretation and modeling services for both Exploration and Production activities, from quick single well evaluations, to large scale multi-well studies. In order to meet the specific technical needs of our clients, we integrate all the data as of; log data, core and geological data, into geological modelling.
Our in-house geoscience and engineering teams work closely together using industry standard software such as Petrel, IP, Techlog.
We can assist our clients with:

  • Onshore QA/QC representative/Seismic Project Manager
  • Integration of petrophysical data for detailed evaluation.
  • Reservoir description projects
  • Specialized petrophysical services
  • Matrix inversion lithology & porosity modeling
  • Saturation height function modeling
  • Unconventional reservoir modeling
  • Petrophysical statistics(Net pay, net reservoir summaries and Cutoff sensitivity analysis)
  • Cased Hole Log Interpretation : We have experience with determining porosities and water saturations through casing

Reservoir Engineering

After creating an oilfield reservoir model, the next step in our reservoir management process is to use various reservoir engineering modeling techniques to predict fluid flow dynamics and their impact on recovery to improve reserves estimation and make relevant decisions about field development, predict future production and performance, and determine appropriate locations for production and infill drilling. Our reservoir engineering Experts work with the G&G team to provide fully integrated reserves and resource assessments, including reservoir simulation modeling, asset Evaluation, economic assessments and more, to ensure success. Reservoir Assesement include :

  • Reservoir engineering studies
  • Integrated reservoir simulation modeling
  • Improced oil/ enhanced recovery
  • Solving production problems
  • Economic modeling

GOGS has access to industry standard software technology including Eclipse 100/300, Petrel, MBAL,Prosper

Asset Evaluation

Identify Opportunities , manage risks and uncertainties with asset evaluation services.

GOGS experts offer in-depth expertise in independent evaluations and audits in compliance with well-established energy industry standards, rules and guidelines.
Our senior multi-disciplinary team have high level experience gained from over 30 years working with oil majors can help you on all aspects of asset value assurance and assist you with progressing in confidence at all stages of the asset life cycle.
Our asset evaluation services include:

  • Opportunity screening.
  • Determination of asset value for license applications or farm-in/acquisitions.
  • From data-room handling to asset full valuation, all technical and commercial aspects
  • Assessment of risks and uncertainties, and upsides
  • Expert opinion on third party evaluations
  • Country entry advice and support to the New Ventures Department
  • Evaluate OOIP/OGIP
  • Assess plays, leads & prospects and associated risks
  • Estimate exploration success probabilities
  • Due diligence

Integrated Basin And Petroleum System Modeling

Petroleum systems occur in sedimentary basins, but not all sedimentary basins contain petroleum systems. To quantify petroleum systems, one must first model basin history.
We offer a large variety of studies using 1D, 2D or 3D approaches
Our consultants have a second-to-none experience in basin petroleum system assessment worldwide. They will tailor the study that optimally fits your objectives in the following domains:

  • Burial / thermal / maturation history and kitchen evaluation (seismic data , wells)
  • Interpretation of paleothermal indicators and thermal regimes (wells)
  • Assessment of source rock effectiveness
  • Volumetric estimation of oil and gas generated, expelled, migrated, accumulated
  • Understanding of oil types and their corresponding sources
  • Generation and ranking of prospects (size,petroleum fluid characteristics,uncertainty)
  • Understanding expulsion efficiencies
  • Pore pressure history, prediction of present day overpressures before drilling
  • Reconstruction of oil and gas migration pathways and migration efficiencies
  • Role of faults in oil and gas migration
  • Understanding seal efficiency and oil / gas columns
  • Post mortem interpretations

Integrated Reservoir Modeling

GOGS geoscientists and engineers have enormous experience in integrated reservoir modelling . When building integrated reservoir studies, we engage with all disciplines to delivers better results and more cost-effective projects.

We construct reservoir modeling to improve estimation of reserves and making decisions regarding the development of the field, predict future production, place additional wells, and evaluate alternative reservoir management scenarios.

Our services include :

  • Static modeling
  • Dynamic modeling
  • Simulation
  • Production profile prediction
  • History matching

Field Development Planning

Integration of as many disciplines as appropriate (geophysics, geology, geomodelers, structural specialists, sedimentologists, petrophysicists, reservoir engineers and simulation experts) is the key element to successfully understand a reservoir and provide the right tools to optimize field development.

GOGS performs integrated reservoir studies for the construction of static models and dynamic simulation and finally the design of the optimized field development plan.
Particular topics that can be covered in stand-alone or integrated exploration or field development studies include:

  • Seismic interpretation
  • Play evaluation, prospect identification and block/prospect ranking
  • Reservoir characterization and quantification
  • Static and dynamic reservoir modeling
  • Deterministic and stochastic volumetrics calculations
  • Uncertainty and sensitivity analysis
  • Production forecasting
  • Decline curve analysis
  • Economic analysis/modeling
  • Enhanced recovery techniques, estimated ultimate recovery
  • Decommissioning and abandonment costs
  • Drilling and completion engineering
  • Facilities engineering and design

Technical Audits

At your place or Ours

Our team of experts can evaluate your workplans or work completed. For Technical Audits in Geology, Geophysics and/or Reservoir Engineering our consultants are highly qualified to highlight any deficiencies and recommend areas for  improvement.

Manpower Services

  • Well test/services engineers and supervisors
  • Reservoir and petroleum engineers
  • Production and completion engineers and supervisors
  • Geoscientists and petrophysicits
  • Drilling engineers and supervisors
  • HSE consultants (Health, Safety and Environmental)
  • Seismic Data QA/QC
  • Decline curve analysis
  • Economic analysis/modeling
  • Enhanced recovery techniques, estimated ultimate recovery
  • Decommissioning and abandonment costs
  • Drilling and completion engineering
  • Facilities engineering and design
if you need expertise please contact us