Methods of study in the characteristics of elastomers’ samples of mud motors at modeling the conditions of their operation

A V Epikhin,O S Ulyanova,Ye D Isaev,V V Melnikov,V V Barztaikin

doi:10.1088/1755-1315/33/1/012037

Abstract

The paper describes the development of the methods of experimental research on rubber elastomers parameters of mud motors at modeling the conditions of their operation. The specific features of mud motors operation as well as main aggressive agents affecting the state and parameters of elastomers, such as drilling mud type, ambient temperature, and mechanical action of the rotor on the plate of the stator are shown in the paper. Due to described agents, new methods of investigations and new units of experimental bed are developed.The experiments confirmed the relevance of the proposed methodology, with its main advantages - ease of implementation and speed of research.

Highlights

One of the conditions of drilling with modern bits is the use of high-torque mud motors capable of ensuring the rotation of the tool in the frequency range of 100-400 rpm to achieve high rate of penetration
50-70% of drilling is provided with mud motors in various regions of Russia [1, 3]
The reason for mud motor failure is a wear of rubber cover of stator that leads to power decrease of mud motor or its complete failure

Summary

Introduction

One of the conditions of drilling with modern bits is the use of high-torque mud motors capable of ensuring the rotation of the tool in the frequency range of 100-400 rpm to achieve high rate of penetration This condition is satisfied by the construction and power parameters of mud motor. The higher temperature and the more aggressive and more abrasive drilling mud, the higher wear rate and elastomer wear that depends on solids and contains [5]. It is connected with low thermoconductivity of rubber, and, if the motor has not special cooling channels, rubber components wear and fail [4, 6].

Published under licence by IOP Publishing Ltd

Conclusion