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GLJ has the manpower, experience and technical expertise to handle all aspects of reservoir studies required for small or large oil and gas fields in a timely and efficient manner.
Reservoir Evaluation Services
Our team of experts are able to provide comprehensive solutions to reservoir problems and development opportunities by applying their full knowledge of geological and petroleum engineering disciplines. Varying combinations of these disciplines may be utilized depending on the scope of the required study.
Reservoir Engineering Services
All aspects of reservoir engineering services are provided by GLJ as described below. These studies incorporate the results of geophysical and geological analysis where appropriate.
Reserves Analysis
The confirmation of recoverable reserves is an essential element of nearly all reservoir studies. Reserves evaluations are conducted based on a thorough analysis of reservoir properties, production history, pressure history and reservoir drive mechanisms using analytical techniques.
Production Forecasts
Production forecasts are generally prepared in combination with reserves evaluations. Forecasts are determined based on a thorough review of historical trends, wellhead capabilities, reservoir drive mechanisms, operating constraints, contract restrictions and future development opportunities.
Economic Analysis
Economic analyses are conducted in order to derive net cash flow projections and net present value determinations. The economic analysis can be utilized for banking, securities filing, property disposition, corporate mergers or property development optimization studies.
GLJ has developed and utilizes the petroleum economics software designed to accommodate economic analyses in many international jurisdictions. The software is hardware independent and has been installed at client sites to provide ease of communication and utilization of our independent evaluation results by technical and financial representatives.
Enhanced Recovery Analysis
Enhanced recovery studies are normally performed to determine:
- the technical and economic feasibility of implementing a proposed scheme;
- the expected response and recovery of an existing scheme; and
- alterations to an existing scheme to improve recovery and profitability.
Enhanced recovery studies are normally conducted after completion of detailed petrophysical analysis, geological interpretation and mapping in order to address reservoir layering, oil-in-place, continuity and horizontal and vertical sweep efficiencies. Fluid and rock properties are determined from laboratory tests, empirical data, or analogous, decline, or analytical techniques prior to simulation studies. Analytical studies can also be used to assess the reasonableness of existing simulation studies.
The following types of enhanced recovery projects have been analyzed by GLJ:
- Horizontal pattern waterflood;
- Horizontal peripheral waterflood;
- Vertical waterflood;
- Horizontal hydrocarbon miscible flood;
- Vertical hydrocarbon miscible flood;
- Horizontal immiscible carbon dioxide flood;
- Horizontal miscible carbon dioxide flood;
- Gas cycling;
- Steam Assisted Gravity Drainage; and
- Cyclic Steam Projects.
Risk Analysis
Some degree of uncertainty is associated with any estimate of hydrocarbon reserves. In cases where uncertainties are large or there is a need to quantify probability, GLJ incorporates risk analysis. Detailed risk analysis using Monte Carlo simulation has been applied by GLJ in reserves estimation for major offshore and international exploration plays and in conventional and regional studies.
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