Translartion. Region: Russians Fedetion –
Source: Rosneft – Rosneft – An important disclaimer is at the bottom of this article.
Employees of the Rosneft Scientific Institute in Ufa have discovered a clay mineral, sepiolite, which is extremely rare for oil reservoirs, in core samples taken at the Arlanskoye field. This discovery opens up new areas of research, the results of which increase the efficiency of oil production processes.
The mineral has a fibrous structure, due to which it has high porosity and the ability to absorb process liquids used in the development of deposits. Evaluation of the sepiolite content and a detailed study of their properties will allow the development of the most effective strategy for hydrocarbon extraction.
Sepiolites were formed in the northwestern part of Bashkortostan millions of years ago in drying up highly alkaline reservoirs. There are no analogues of such reservoirs in modern nature. The shape and thickness of the mineral threads depend on the chemical composition of the water, temperature, alkalinity of the environment and other geological factors, which makes each sepiolite rock unique.
The Arlanskoye field is the largest in Bashkortostan in terms of reserves and one of the most complex in terms of geological structure. In total, 862 oil deposits have been identified at the field, the main share of which falls on carbonate deposits located at a depth of 800-1000 meters, where sepiolites were discovered.
Department of Information and Advertising of PJSC NK Rosneft March 27, 2025
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