Резюме:

Almetyevskaya Square is one of the central squares of the Romashkinsky oil field. It is confined to the west–central part of the South Tatar arch. From the west it is bounded by the Altunino–Shunak trough separating the square from the Novo–Elkhovskaya structure. The main operational object of the area is the productive deposits of the Kynovsky (D0) and Pashysky (D1) horizons to the Nizhnefran sublayer of the Upper Devonian, represented by the interlayer of sandy, sandy–siltstone and mudstone rocks. The correlation of the layers of the Pashian horizon is carried out using the main reference points "upper limestone" and "Mullin clays", which lie, respectively, in the roofing and plantar parts of the horizon and the additional reference point "mudstone" in the middle part of the horizon. The horizon D1 is a multi-layered object, within which the layers "a", "b1", "b2", "b3", "b", "g1", "g2+3" and "d" are distinguished. Productive layers of horizons, if considered as a whole, have an almost areal distribution. Thus, the area of productive reservoirs of the D0 formation in relation to the administrative one, which is 17969.1 hectares, is 65.6%, according to "a" 72.0%, according to "b1" – 39.3%, according to "b2" – 56.6%, according to "b3" – 54.0%, according to "b" – 61.5%> for "g1" – 58.3%, for "g2+3" – 44.4% and for "d" – 12.2%. Thus, the most significant amount of productive area from the administrative one falls on layer "a". Layers Up to, "b2", "b3", "b", "g1" occupy an intermediate position in terms of the distribution of reservoirs. The smallest proportions are characterized by the layers "g2+3", "b1", "d". Information about the thickness of the clay sections between the layers may also indicate to a certain extent the degree of their hydrodynamic connectivity.

Keywords: productive deposits of horizons, correlation of layers, reservoirs, thickness of clay sections, coefficients of sandiness and fragmentation

Kemalov Alim Feizrahmanovich ², Kemalov Ruslan Alimovich ³, Galiev Ruslan Nailevich ¹ Physic-chemical and geological characteristics of the structure of the Almetyevskaya area of the Romashkinsky oil field // Природные энергоносители и углеродные материалы & Natural energy sources and carbon materials. – 2024. – № 02;
URL: energy-sources.esrae.ru/40-197 (Date Access: 28.12.2024).

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