The MOLEX was conceived and developed in the attempt to arrive at a well performance and completion model which will override the deficiencies of the available simulation models by integrating the many reservioir controls with the effects of well and perforations geometry.

The mathematical groundwork of the MOLEX considers oil flow dynamics in heterogenous pore space and perforations, expressed in terms of mathematical oil inflow equations valid for conventional (vertical) and unconventional (slant and horizontal) wells.

Heterogeneity effects are accounted for by three modifiers, i.e. the transformation matrix of anisotropic pore space into its homogenous equivalent (TT), the integral hydrodynamic factor (IKHF) and the composite skin factor (SCOMP).

Comprehensiveness is the feature of the model which makes it unique and original. This quality allows the combined action of reservoir characteristics to be analysed and the productivities of various well types, productivity ratios, reservoir and well parameters significance and cut-offs to be evaluated.

Using the built-in basic rules, the MOLEX simulation model pieces together the many facets of the oil well performance and completion problem. The right solution is offered by ways of stepwise and discriminating analyses of well productivites subject to reservoir characteristics.

The validity of the MOLEX has been tested on two selected cases, that of Turija Sever and Jermenovci fields. The calculations and analyses indicate that the optimum engineering solution for the future operation of these fields are slant and horizontal wells, respectively.

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