Optimization of the technology of hoisting operations when drilling oil and gas wells

Abstract

Abstract In the process of drilling deep wells, hoisting operations are, although unproductive, a necessary expenditure of working time and occupy 25-60% of the total time of well construction. In the case of major repair of wells, this share can be even higher. It is clear that the technical and economic indicators of drilling and capital repair of wells largely depend on the speed of execution of hoisting operations. Existing technologies and time standards for their implementation are outdated and do not take into account the current state of technology development. The article deals with the issue of optimization of the rationing of time for the execution of hoisting operations during drilling and capital repair of oil and gas wells. This problem is solved using the example of the TW-125 CA A6 well overhaul installation, which are used during overhaul of wells by branches of JSC “Ukrgazvydobuvannya”. With the help of the kinematic scheme of the installation, the rotation speeds of the winch shaft at each gear of the gearbox were determined, which made it possible to determine the optimal time for performing hoisting operations, and, as a result, to reduce the time spent on drilling, depending on the type of rock, in general.