DIAGNOSING EMERGENCY LEAKS FROM THE LINEAL PART OF GAS TRANSPORT SYSTEMS IN THE CONDITIONS OF THE IRUNDERLOAD

Abstract

To ensure the technological processes of drilling oil and gas wells, drilling pumps are used to create pressure and supply mud. This leads to increased requirements for their characteristics, which, in turn, have a significant impact on compliance with the regimes and ensuring the continuity of the technological process of well construction. The most critical part of a drilling pump is the hydraulic part, as its parts are exposed to high pressures, aggressive media, abrasive wear, cavitation, etc. The paper analyses the operating conditions and failures of the elements of drilling pump valves. Particular attention is paid to comparing the hydrodynamic characteristics of the drill pump valve for different properties of the flushing fluid. A three-dimensional model of the drill pump valve was built to simulate fluid flows and design the elements of the valve and a finite element simulation was applied. The peculiarity of the research is the simulation of the hydrodynamic parameters of drill pump valves, taking into account the behavior of the flushing fluid by using several different models (drilling mud and water). Parametric modeling with a variable parameter, the gap between the valve seat and the valve plate, is used. The control parameters in the study are the values of pressure values at points located in the gap between the seat and the valve plate of the drilling pump. Based on the results, simulation modeling of the movement of drilling mud and water through the gap between the valve seat and the valve plate allowed us to determine the values of hydraulic resistances. Their comparison shows a deviation of 48.7% on average.