No abstract

The article deals with the method of evaluating oil equipment remaining lifetime by vibration diagnostics. The advantages of machine maintenance according to its technical condition, compared with planned-preventive repairs, are given. The technical conditions of the wellhead stuffing box of a beam pumping unit and a centrifugal pump machine were studied by Corsair vibration analyzer and Aurora software product, providing the evaluation of the current machine condition for planning a repair period. While analyzing the results of the equipment vibration diagnostics, the conclusions on faults were made and the dates of predictive maintenance were determined: the date for the next measurement (condition control) and the date for repair. The vibration diagnostics significance was confirmed in experiments as the most universal parameter which provides accurate information on equipment condition, making it possible to evaluate equipment technical condition in operation and predict its reliability.

For efficient control of well drilling, it is necessary to know actual drilling conditions, parameters of the trajectory of previously drilled wells, to predict the trajectory of a new part of the well bottom, to know technological parameters in the bottom hole zone. Efficiency of the telemetry systems used for drilling wells was analyzed by calculating the economic efficiency for well drilling at the Taylakov field. Modern telemetric systems help avoid additional drilling costs and improve efficiency and reliability of well drilling.

The paper presents laboratory studies of impulse water injection on the rock samples. A large number of experimental data were obtained. According to the experimental data, a regression analysis was carried out, on the basis of which qualitative correlations between factorial and resultant characteristics were revealed. Taking into account the mathematical analysis of the data obtained, graphical dependencies were constructed. As the fluid oscillation frequency increases, the amount of liquid passing through the sample of the porous medium increases, with the greatest value of fluid leakage through the rock samples reaching in the frequency range 600 ... 1000 Hertz.

The paper considers the problem of insufficient cleaning of oil and gas wells from drill cuttings. The formation of slurry dunes is the main cause of complications and accidents in horizontal well drilling. The task related to the development of high-efficiency equipment for well bottomhole cleaning from drill cuttings is quite relevant. The existing techniques and technologies for borehole bottom cleaning from drill cuttings caused by rotary drilling were analyzed to find a way of improving the efficiency of borehole bottom cleaning. A new technical solution for cleaning vertical, directional and horizontal wells from drill cuttings was developed. The process functional diagram of at-bit sludge chopper during turbine drilling is presented to increase the cleaning efficiency of bottomhole and wellbore of vertical, directional and horizontal wells from drill cuttings during roller boring.