ADI Base Module

Base module enables to:

Create a project database:

Input and edit maps, core and well logs interpretation data;

Export & import from external databases;

Translate irregular data to regular grid (including unparalleled algorithms of interpolation, taking into account disturbances);

Change scale of the matrix data (to translate maps from a scale to scale);

Visualize data sets,

Print and plot maps by various devices including the following functions:

Rescale,

Image type modification (colors, contours, hatching);

Plot composition from several different parts;

Layout output to printers/plotters in various formats;

Interchange data between modules and packages of Multi-D Interpretation software system:

Produce maps of sections from interpretation results  and initial data;

Export data from ADI to PMDI for visualization and comparison with PMDI results.

ADI Information Advancement Tool

The tool allows to increase the number of the attributes related to reservoir characteristics and to discover the Multi-D attributes that best reflect each one of the reservoir properties.

The programs of ADI Information Advancement Tool enable to:
 

Transform maps in order to extract the most meaningful information from the initial data, by computing:

Derivatives on different directions and mixed derivatives;

Statistical transforms (variances of surfaces, deviations and medians);

Invariants (gradients, curvatures, differential invariants, Euler delta);

Local and regional components (space filtering results);

Specialized transforms for potential and quasipotential fields (integration and differentiation);

Gravity field to pseudo-magnetic and magnetic to pseudo-gravity fields converting;

Continuation into upper and lower half-space,

Calculation of 1-st, 2-nd and 3-d derivatives in gradient direction, probable faults mapping.

Determine correlation between attributes, and attributes and reservoir parameters defined in well data, including the algorithms of:

Kendall correlation;

Spearman correlation;

Pearson correlation.

Analyze relationships between Multi-D attributes themselves and between Multi-D attributes and parameters using:

Hierarchical classification;

Singular numbers analysis;

Regressor’s selection.

ADI Classification Tool

Classification Tool allows to obtain qualitative view of prospective oil and gas zones even when well data are insufficient for parameters mapping or without well control at all. The user can

Divide the area into parts with different geological and lithological properties, and

Estimate prospectivity of different zones and points.

The tool consists of:

Taxonomy - Program for classification without reference points

Anomaly - Program of multicomponent analysis (identification of anomalous zones using a set of geophysical parameters without reference points)

Clustering - Program for dividing an area into zones by the similarity to reference points (membership function)

Topology Quality - Three programs for dividing an area into classes, with and without using the multiple qualitative reference data (based on algorithms of a self-coordinated choice and ergodic theory of Markov chains)

ADI Quantitative Prognosis Tool

 The Quantitative Prognosis Tool is designed to:

Extrapolate variety of reservoir parameters from well logs into inter well and surrounding areas;

Locate the most prospective and optimal drilling points for exploration and development.

The tool consists of:

Three modifications of Contouring program based on regression analysis allowing to compute parameters, with and without superimposed restrictions,

Robust Contouring program allowing to automatically exclude the wells with contrasted parameters from the computation using the established relationships;

Multiregression program allowing to obtain the forecast in different blocks of the area and then automatically unify and  extrapolate them into the entire area;

Topology Quantity program for computing a value of a parameter in any point of the area as a function of the distance between the point and each  reference well in  the Multi-D attributes  space.

Contouring algorithms enable to discover the relationships between Multi-D attributes and well data. Once the relationship being established is applied to the whole area, it is produced a map of the parameter. Also the tool allows choosing the combination of data sets, which possesses the most quantity of information, to discover and delineate prospective objectives and to evaluate reservoir parameters. The program represents an extremely powerful and necessary tool for making the final prognosis. An informative combination of the data can be stored and used for parameter monitoring during subsequent drillings.

Topology Quantity program calculates the parameters defined in wells for each particular point. The weight of each reference well, nonlinearly depends on a difference between Multi-D attributes at the well site and at the point of interest.

All the quantitative results are computed together with uncertainty and reliability of the estimates (multiple correlation coefficient, standard deviation, regression rank, etc.) and errors maps (uncertainties) .