INVESTIGATION OF THE INFLUENCE OF THE MODE PARAMETERS OF THE DRILLING WELLS ON THE BIT SPEED INDICATORS
Akhmetov S.M. Efendiev G. Akhmetov N.M. Iklasova Z.U. Ikhsanov Y.U.
2021National Academy of Sciences of the Republic of Kazakhstan
News of the National Academy of Sciences of the Republic of Kazakhstan, Series of Geology and Technical Sciences
2021#6Issue 45037 - 45 pp.
As is known, the prediction of the drilling speed indicators and the determination of the corresponding optimal parameters can be conducted on the basis of rock properties’ indicators, and the classification of the geological section. In these cases, homogeneous groups are selected in turn, in each of which intervals are recorded in which bits of the same type are worked out. According to the aforementioned sequence, in this study, the analysis was conducted, and the corresponding program was developed and implemented using specific examples. As an example of the initial data, previously drilled data in Kazakhstan, Azerbaijan, as well as at one of the fields of the Volga-Ural oil and gas region of wells, which were grouped for a homogeneous group of rocks were used. The provided materials represent the results of joint work of Kazakh and Azerbaijani scientists, implemented within the framework of scientific international cooperation programs. According to the initially proposed algorithm, through the implementation of the “LOGGING” program, the characteristics of the geological section were calculated: lithology, porosity, permeability, hardness, continuity, abrasiveness, Poisson’s ratio, pore pressure and fracture pressure gradients, optimal drilling mud density, and others. In order to compare the results of calculations, the results of Well Survey interpretation were also involved. Due to the analysis of the change in the mechanical speed of the bit over time, a statistical model of the influence of mode parameters on the values of the initial speed and its rate of decline in time was built. A method is proposed for predicting the run speed, the cost of 1 m of penetration, as well as variant calculations and decision-making on the choice of optimal parameters.
bit penetration , classification of the geological section , mechanical drilling speed , mode parameters of drilling , rock properties
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Atyrau University of Oil and Gas named after S. Utebaev, Atyrau, Kazakhstan
Institute of Oil and Gas of the National Academy of Sciences of Azerbaijan, Baku, AZ, United States
Atyrau Engineering and Humanitarian Institute, Atyrau, Kazakhstan
Atyrau University of Oil and Gas named after S. Utebaev
Institute of Oil and Gas of the National Academy of Sciences of Azerbaijan
Atyrau Engineering and Humanitarian Institute
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