The role of complex core studies in the search for oil and gas deposits and further in the study of their structure is considered. The necessity of the most complete extraction of the core in order to obtain reliable information about the geological structure of the territories under study and filtration-volume properties of the rocks composing them is shown. Having information about the lithological and petrophysical characteristics of the studied deposits and conditions of their formation, it is possible to predict the corresponding features of the cavity space structure and filtration-volume properties for similar by structure new similar structures. This would allow to obtain the most complete characteristics of the section already in one or two wells with maximum core recovery, to build a petrophysical model of the deposit and the field and thus increase the efficiency of geological and exploration works. Selection of optimal quantity of core material is the most important factor to increase reliability of information obtained from a single well and to reduce costs for the study of the entire territory.
