Prospect Evaluation

Our Prospect Evaluation service brings together disciplines to build certainty in your reservoir structure, identify fluid zones, and determine the commercial viability of prospects.

Our extensive background in velocity modelling includes world-wide experience of depth conversion in different environments.

 

To confirm the robustness of reservoir structure, Sensitivity Testing is applied to the reservoir depth structure to quantify uncertainty and its impact on closure and GRV. Similarly, Uncertainty Analysis of the reservoir thickness relative to contacts can be employed to understand the probability of commercial success (P10, P50, P90).

For an insight into fluid distribution we recommend the use of a fluid attribute, such as the maximum fluid attribute from EEI. The findings from this can be confirmed and refined by our AVO Scanning technology which uses machine learning to identify AVO/AVA directly from pre-stack data.

 

In addition, elastic impedance data can be used to predict pay thickness between wells. SIP offers several approaches which are dependent on the input data, for example if there are tuning effects, and the types of outputs required, such as probability estimations.

Uncertainty Analysis

Top Brent Depth Sensitivity

Multiple realisations of top reservoir depth using different velocity models. This method illustrates which areas of the depth structure are most sensitive to changes in modelling method. It can also be used to identify methods which are unsuitable.

Top Brent Depth Uncertainty

Uncertainty envelope map showing the maximum variation in depth to top reservoir. Similar maps can be created for reservoir thickness and include fluid contacts.

AVO Machine Learning

Forties Fluid Projection

Extended Elastic Impedance (EEI) projection used as a direct fluid indicator to identify prospective hydrocarbon zones.

AVO Identification from Gathers

Class II/III AVO identified directly from angle gathers using SIP's machine learning algorithm. Direct analysis gives a good match to EEI. The result is more discrete and a better measure of where AVO response is cleanest and strongest.

Seismic Net Pay

Net Pay Band Limited

In band limited data, tuning produces bright amplitudes in impedance data. This results in a superficial Net Pay response.

Net Pay De-tuned

SIP Net Pay removes tuning effects to give a more accurate picture. In some areas the actual Pay is much thinner.

Our Prospect Evaluation Services

DEPTH CONVERSION

  • Depth Conversion

  • Sensitivity Testing

  • Uncertainty Analysis

  • GRV, P10, P50, P90

  • Single / Multi-survey

PROSPECT IDENTIFICATION

  • Coloured Inversion

  • EEI Fluid indication

  • AVO Scanning using Machine Learning

PROSPECT ASSESSMENT

  • Seismic Net Pay

  • Risk Assessment

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