Ostreykovsky Vladislav Alekseevich, doctor of technical sciences, professor, sub-department of informatics and computer science,
Surgut State University (628412, 1 Lenin street, Surgut, Russia), E-mail: firstname.lastname@example.org
Antonyuk Pavel Viktorovich, postgraduate student, Surgut State University (628412, 1 Lenin street, Surgut, Russia),
Antonyuk Alena Viktorovna, chief specialist, OJSC "Surgutneftegas" (628404, 50 Entuziastov street, Surgut, Russia),
In the practice of major oil companies, in order to maintain profitability, an annual overhaul of more than a third is needed and more than half of the wells are being serviced. The statistical data on the failures and idle times of mobile drilling complexes were collected and processed in the process of performing technological operations for the current and major repairs of oil wells in the fields of Western Siberia. The main causes of MBK KV-210 failures and the most important sources of time lost in the idle time of these mobile units have been identified. Among the failures of the IBC elements, the failure of the mast parts has the greatest impact on safety performance.
In this case, a long time is expended from the drill string for lifting. The main reasons for the failure of the masts are: dragging the tackle block under the crown block; overloading mast; weakening the strength of the mast structure due to corrosion; displacement of the crown block in relation to the crown block, as a result of which the load is transferred to one side of the mast and the mast breaks; subsidence of foundations due to prolonged action of water and washing liquid; accidents due to failures of drill winches, power drives and other equipment; rupture of high pressure hoses of the hydraulic system. In addition to failures, information on downtime was assessed. Weaknesses in the maintenance system of the technical complex and the reasons for the long recovery period are revealed. The analysis of the statistical data on the operating time of the equipment was carried out with the help of STATISTICA 6.0 software. The efficiency of nodes and mechanisms was considered as separate for nodes and mechanisms, and for complexes in general.
The results of statistical processing of the given data on the failures of the mobile complex and its elements show that the qualitative distribution of failures does not contradict the Weibull distribution law, which agrees with the results obtained in earlier publications. As a result of statistical analysis of data on failures and idle times, the form of the distribution law and its parameters were revealed.
The results obtained can serve as a basis for improving the procedures for servicing mobile drilling complexes and the process of rational planning of the supply and consumption of spare parts, tools and supplies.