Improving the efficiency of drilling horizontal wells by using an eccentric calibrator in the fields of Orenburgneft JSC

UDK: 622.243.24

DOI: 10.24887/0028-2448-2025-11-13-17

Key words: drilling, eccentric calibrator, horizontal wells, optimization, wellbore expansion, wellbore cleaning, field tests, calibration calculations, friction coefficients

Authors: M.V. Leontev (SamaraNIPIneft LLC, RF, Samara; Samara State Technical University, RF, Samara); A.A. Zagadov (Orenburgneft JSC, RF, Buzuluk); S.Yu. Sundeev (Orenburgneft JSC, RF, Buzuluk); R.R. Galiev (Sorovskneft LLC, RF, Tyumen); M.V. Mishakov (Rosneft Oil Company, RF, Moscow); M.E. Koval (SamaraNIPIneft LLC, RF, Samara; Samara State Technical University, RF, Samara); K.A. Shipovskiy (SamaraNIPIneft LLC, RF, Samara; Samara State Technical University, RF, Samara); S.V. Bogatkin (SamaraNIPIneft LLC, RF, Samara); A.V. Vagner (SamaraNIPIneft LLC, RF, Samara)

The article presents the results of experimental field operations on the use of eccentric calibrators with a diameter of 118, 126 and 152,4 mm as part of a section of steel drill pipes when completing horizontal sections of new and reconstructed wells at the fields of Orenburgneft JSC. These operations were carried out as part of the strategic task of Rosneft Oil Company to increase the commercial rate of drilling production wells. It is shown that the expert work of Rosneft's specialists made it possible to solve a complex production task of improving the preparation of horizontal sections of wellbores during completion by the method of lowering tailings with multi-stage hydraulic fracturing (MSHF). This technical and technological solution significantly reduced the time spent by Orenburgneft JSC on long-term studies of horizontal sections of new and reconstructed wells before lowering tailings with MSHF. Using a software package for engineering calculations in drilling, the authors performed modeling of technological operations for well completion with eccentric calibrators as part of a steel drill pipe assembly, which enabled them to determine the calibration friction coefficients in the casing and open wellbore. The article presents economic indicators of reducing production time for preparing horizontal wellbores at the fields of Orenburgneft JSC, and analyzes the possible risks of using this technology for subsequent replication of the obtained experience in completion of horizontal sections with similar geological conditions using shanks with MSHF.

References

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