DEVELOPMENT OF METHODOLOGY FOR THE STUDY OF THE MECHANICS AND MANIFESTATIONS OF PROPERTIES OF ELASTOMERS IN THE DRILLING PROCESS

摘要

In the current drilling technology today pointed out the problems associated with the instability of work down hole drilling motors , they stop, short service life of working devices (WD) and accidents (lapels, destruction elements DDM) layout of the drill string (DS). In particular, the timing of the engines, depending on the size and operating conditions, ranging from 90 to 235 hours. Failures DDM according to drilling companies “Gazprom drilling” and “CSA Deutag” – from 5 to 12 per year; which leads to long-term recovery efforts in the well, or the complete elimination of the latter. From the practice of using found that about 50% of all failures associated with DDM wear working devices are a pair of friction rubber-metal (stainless steel rotor – rubber steel-stator).Solving complex scientific and engineering problems calls for a considerable amount of experimental research and testing in order to study and obtain an objective assessment of the impact of various factors on the change in the studied parameters. In this regard, we install AI 5018 was reconstructed to study the tribological properties of the “elastomer – rinsing liquid – the metal” as applied to the interaction of the friction pair “stator – rotor” in the PDM. To this end, as close to reality friction pair “rubber – metal”. The article discusses the problem of choosing the methods of laboratory tests, which must meet the requirements and standards applicable standards and regulations to carry out standardized tribological tests and studies to determine the physical and mechanical properties of rubber.The results of complex investigations in the field of studying the processes of friction and wear of friction pairs elastomer-metal with the purpose of improvement of a technique of study of tribological aspects of the power section of screw down hole motors.