The Dkt-1 layer is restricted in "kolgal" formation. It is the unique geological object, because the terrigenous Dkt-1 layer is characterized by local distribution inside thick carbonate sediment. The resourse of this layer contain 60% of the whole field resourses. The operator gave a purpose to explain the differences of the exploration wells work. For example, there are two exploration wells located on 500 meters from injection well. There fore debits are 10 times deffer: 60 and 600 tons per day. 40% of wells are drilled in lithological unsuccessful area, that is why the relevancy of deep geological research is appear.

The main purpose: increase of development effectiveness.

The main aims: the detail correlation, prediction of reservoir distribution, analysis of development prosesses according to facial analysis.

Originality: using the facial analysis in the stage of active development. The complex analysis of research – at first time data of core, logging, seismic and actual production history was complexed.

The Vakhitovskoe field is distributed in Orenburg region. The layer under study – Dkt-1 – was formed at the late franian stage of Devonian system and represented by terrigenous sandy-gravel rock the total thicknes about 50 m.

As a initial data was given information of 40 wells (8 of them with core, 220 meters), 3D seismic cube area 130 sq.km., more than 900 core samples with reservoir properties, actual production history from 2002.

In a seismic section the Dkt-1 layer is represented by clinoform body downwarping to the north.

The main geological feature of the layer is anomaly huge compartmentalization – it achieves 40 interlayers.

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