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A wide range of Reservoir Engineering consulting services can be provided, ranging from classical reservoir engineering to the advanced numerical modelling and simulation. Our engineers have experience in reservoir engineering processes and practices from exploration through appraisal, development and reservoir management. We have thorough knowledge of working on industry standard software, as well as in-house developed software.

Pressure Transient Testing

  • Designing the well test to meet the objectives of the test
  • Specifying well test equipment and gauges
  • Specifying sampling procedures
  • Providing a comprehensive pressure transient analysis to extract maximum information from the well test.


Production forecasting and reserves estimation

  • Forecasting a production profile of oil and gas streams while giving due consideration to the reservoir characteristics and stage of the reservoir lifecycle, for assessment of reserves.
  • An in-house tool to conduct Monte Carlo simulation can be additionally used to conduct an uncertainty and risk assessment of the profiles.
  • Estimation of reserves and ultimate recovery


Material Balance studies

  • Material balance calculations Using MBAL, by Petroleum Experts (considered the most versatile and flexible tool for Reservoir Engineering studies).
  • We have also developed an in-house Material Balance tool using Microsoft Excel along with powerful VBA routines for conducting Material Balance studies.


Fluid and Rock Characterisation

  • EOS modelling for comprehensive fluid characterisation
  • Use of PVT correlations for characterisation of fluids.
  • We also have extensive experience in rock characterisation studies.


Reservoir Characterisation and Modeling

  • Creation of a reservoir model for conducting necessary engineering analysis for input into the characterisation and modelling effort.
  • Provision of all necessary inputs in terms of gridding, population of properties and fluid contact information, as well as upscaling of models if required.


Numerical Simulation of Primary and Secondary Recovery

  • Simulation, both finite difference and streamline simulation using ECLIPSE, ranging from single well models, areal and cross sectional models as well as full field simulation studies.
  • Waterflooding and gas injection studies
  • EOR simulation studies


Uncertainty and Risk Analysis as related to petroleum exploitation


Uncertainty and Risk Analysis using Monte Carlo simulation
Experimental design for conducting sensitivity studies, uncertainty analysis and risk analysis.


Pressure Transient Testing


Pressure Transient testing, also commonly known as “Well Testing”, is used mainly for determining the formation flow capacity (kh, the permeability thickness product) and the skin factor. Other parameters which can be inferred from PTT are distance to boundaries (faults), and if the test is run long enough, the reservoir volume contacted by the well. PTT is used in exploration and appraisal wells to determine the flow capacity and number of wells required for development. It is also used in development wells to determine the skin effect and any requirement for stimulation of the well. During the exploration phase, well testing also provides an avenue for obtaining a reservoir fluid sample at the initial reservoir conditions.


Production Forecasting and Reserves Estimation


Production Forecasting is one of the main responsibilities of a Reservoir Engineer. It involves predicting the future production of oil and gas streams at various stages of the reservoir lifecycle. Depending on the characteristics of the reservoir and stage of development, different methods can be used to predict the volumes of oil and gas obtainable from the reservoir. These volumes form the basis of an oil company’s reserves.


Material Balance Analysis


The Material Balance method is used in oil and gas production to ascertain the drive mechanism and estimate the oil and gas volume connected to the wells. Though primarily used as a post-production analysis, Material Balance studies can also be used to estimate reserves and draw up production profiles for oil and gas. Material Balance Analysis can be used to estimates the optimum number of wells for depleting an oil and gas reservoir.


Fluid and Rock Characterisation


Fluid characterisation is important to understand the reservoir fluid properties, which are the basis of successful exploitation of an oil or gas reservoir, though mainly so in oil reservoirs. The early and accurate estimation of fluid properties such as Saturation Pressure, Solution Gas Oil Ratio, Formation Volume Factors and Viscosity are extremely important in making an optimum field development plan to fully exploit the reservoirs.
Rock characterisation involves the analysis of Routine and Special Core Analyses to characterise the formations from which oil and gas are produced. Based on core analyses of rock properties such as porosity and permeability, and rock-fluid interaction properties such as relative permeability and capillary pressure, rocks are classified and correlated with well log derived properties. These are later used for reservoir modelling and simulation.


Reservoir Characterisation and Modelling


Reservoir Characterisation and Modelling is an integrated effort by the earth science and engineering disciplines to create a digital representation of the reservoir. This digital representation, the “model”, is used for estimation of volumes and numerical simulation. The engineering inputs into the model are based on the stage of development of the reservoir. Engineering inputs are also important in the construction of the model, since the model may later be converted into a simulation model.


Numerical Simulation of Primary and Secondary Recovery


Numerical Simulation is a versatile tool for reservoir engineers. Simulation is used for small scale studies like single well models, areal and cross sectional models to reservoir and full field studies. Numerical simulation is not only used for primary depletion but also for secondary processes like water flooding and gas injection as well as Enhanced Oil Recovery processes like miscible flood, WAG and steam flood. A more recent technique, streamline simulation, offers the flexibility of modelling entire reservoirs with a rapid turn-around time.


Uncertainty and Risk Analysis


Uncertainty and Risk Analysis as a part of reservoir engineering studies has gained prominence in the last decade and is fast becoming part of reservoir engineering deliverables for most of the major oil companies in the world. This trend is a result of the advancement of tools and techniques to handle uncertainty analysis in reservoir engineering. It is also due to the availability of inexpensive computer hardware to conduct the multitude of calculations required to accomplish these type of analyses.



 
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