Research of the lithofacies properties of the Productive series rocks in the north-west flank Bulla-Project field

Abstract

The Bulla-deniz field belongs to the oil-gas region of the Baku archipelago and is located on the Kanizadag-Babek anticline. During the tectonic subsidence and rapid sedimentation process in the region in the upper parts of the development period for the productive layer, the flow of large and coarse-grained materials increased and there were favorable conditions for the formation of hydrocarbon deposits. Quaternary – QLD ages sediments were discovered by drilling in the Bulla-deniz field. Gas and condensate products have been discovered in the North-East wing of the field, and along the depth in the V, VII and VIII horizons of the productive series, and the exploitation is continued. In the article, the lithological-facies characteristics of the rocks are analyzed by following the stratigraphic cross-section of the horizons and layers within the Productive series in the area and depth of the Bulla-deniz field. On the basis of well logging diagrams, the well picks depths of the V, VII and VIII horizons in the North-East wing of the field were monitored and specified. A 3D facial model was created using Irap RMS modeling software. In the model, the change of two facies – sand and clay – is monitored by the stochastic distribution algorithm. It is discussed, to determine the areas with more favorable collecting capacity for collecting oil and gas in the field by constructing trend maps and distribution histogram of sand thicknesses on horizons within the Productive series.