Item |
Example Applications |
| Evaluation of Production Log Surveys in Multi-Layer Reservoirs
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• Apply multi-layer pressure transient analysis to sequential layers in a multi-layer spinner survey to assess relative kh, skin of each contributing layer in both production and injection wells.
• Identify underperforming perforated layer(s) requiring remedial stimulation treatment.
• Determine implications of inter-layer cross-flow.
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Assessment of Injection Well
Behaviour
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• Analyse long-term water injection performance, including thermal fracturing effects and fracture closure during a fall-off
• Apply Hall plot technique to assess most likely factors which have contributed to changes in a well’s injectivity over time |
| Estimation of Material Balance OGIP in “Real Time”
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• Analyse both production rate and flowing data in real time using a variety of advanced decline type-curves to estimate OGIP, expected reserves and reservoir parameters (kh,skin) in depletion-type gas pools without having to shut-in wells |
| Non-Conventional PTA Applications |
• Apply MDTTM test tool to generate sufficient reservoir pressure drawdown to cause dissociation of natural gas hydrates; evaluate the resultant pressure response |
| Evaluation of Naturally Fractured/Karsted Carbonate Reservoirs |
• Assess contribution made by naturally fractured system to reservoir's long term deliverability and hydrocarbon in place.
• Evaluate dual porosity parameters for input into water/gas coning simulation models.
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| Interference Test Analysis
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• Assess degree of pressure communication, interwell permeability thickness and pore volume compressibility between two or more wells believed to be in the same reservoir. |
| Reservoir Limits Test Analysis
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• Estimate most likely gas-in-place figure based on differences in extrapolated static pressure between successive shut-ins on extended production tests.
• Estimate size/shape of reservoir from pseudo-steady state analysis of extended drawdown period.
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| Modified Isochronal and Multi-Point Gas Test Interpretation |
• Evaluate stabilised wellhead deliverability of gas wells to assess feasibility of tie-in; future compressor requirements. |
| Evaluation of Well Stimulations
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• Compare pre- and post- stimulation IPR/AOF to assess success of treatment.
• Prediction of transient/stabilised deliverability following hydraulic fracture treatment.
• Estimate frac length/conductivity.
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| Drill Stem Test Interpretation (Both Conventional and Closed Chamber)
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• Identify by-passed oil/gas pay on tests which recovered only oil cut mud or gas TSTM.
• Quantify expected stabilised oil/gas deliverability following removal of drilling damage.
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| Well Testing Manuals
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• Prepare detailed test manuals for onshore exploration well testing
• Prepare manuals on offshore test operations including equipment specifications, test string design and on-site evaluation techniques.
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