Experience in the Use of Horizontal Wells of Various Designs for the Development of Hard-to-Recover Oil Reserves in LLC Lukoil – Western Siberia

Every year the resource base of the LUKOIL fields located in Western Siberia undergoes changes in the direction of increasing the share of reserves in the deposits with low permeability and more complex geological conditions of their development, the so-called hard-to-recover oil reserves (HRR). Such deposits are confined to the deposits of the Tyumen, Bazhenov, Abalak suites, as well as to low-permeability reservoirs of the Achimov strata and sediments of the yu1 formation. At the beginning of 2019, there are about 290 million tons of oil reserves (figure 1), and the accumulated production of them already exceeds 15 million tons of oil (figure 2).