CSG PROSPECT EVALUATION & EXPLOITATION

Coal Seam Gas Exploration & Production Services use the following steps to evaluate CSG prospectivity.

CSG Prospect Evaluation needs an integrated analysis and assessment of a number of different data sets. The first step is to build a database for a regional data.

• Regional geological and geophysical studies, collection of offset well and field data, review all existing data and their re-interpretation for CSG data analysis.
  
• Review of regional geophysical data (gravity, magnetic and seismic data).
• Review all geological, geochemical, surface and subsurface maps at regional and local scale to understand the extent of coals and their structure in relation to CSG.  
• Evaluations of coal reservoirs; petrophysics; core analysis, testing, testing (DST and Production tests).
• Evaluation of license requirements, plan and implement next phase.

Second stage is to build a well base database, including following data:

• Core logging data
• Desorption data and gas content.
• Methane and carbon dioxide isotherm data
• Gas composition
• Isotope data
• Water quality data
• Organic petrography and coal quality data
• Maturation and rank data
• DST and permeability data
• Pilot test data

Coal Seam Gas Exploration & Production Services identify the issues and provide solutions.

• Water disposal and flaring options.
• Effective well spacing  (pilots and piezometers).
• CH4 and CO2 distribution patterns.
• Local variation in gas content and saturation levels.  
• Coal group continuity in the basin.
• Production pilot well productivity.
• Optimization of drilling and completion methods.
• Testing practices and procedures
• Cementing and P&A
• Experienced Personnel and services (consultants/contractors)
• Equipment and supplies

GIP

Coal Seam Gas Exploration & Production Services use a standard and highly accurate approach to estimate coal and coal seam methane resources in the prospect area. In this method, the basin is divided into grids and then assign clean coal thickness and gas content values to each grid. Gas content values for each grid are estimated from depth versus gas content type curves. Coal thickness is based on a density cut-off of 1.75 g/cc. The GIP calculations are based on definitive polygonal resource estimation techniques over the extensive drill core and petrophysical database. Coal Seam Gas Exploration & Production Services provide high level of data assessment and follow all engineering procedures in GIP Resource and Reserve Estimations.  

Following stages are proceeded and analysed for CSG prospect evaluation.

• CSG Reserve Calculation and Production Forecast
• Drilling Technology
• Completion Method(s)
• Stimulation
• Production
• Project Economics

EXPLOITATION ASSESSMENT

CSG Exploration & Production Services helps to maximize value of a resource or company by providing appropriate geoscience and technical analysis. The primary expertise areas offered the clients are as follows:

• Data room preparation.
• Project economics.
• Asset evaluation.
• Farm-in and Farm-out applications.
• JV partnership assessment.
• Investor presentation and negotiations.