Optimization Design of a Wear-Resistant Integrated Logging Electrode
Due to harsh conditions such as collision and erosion of the borehole,the insulation of the button electrode has degraded over time,resulting in measurement failures and an inability to meet the technical requirements of"one trip drilling"for large displacement horizontal wells.This paper provides a preliminary summary and analysis of the reasons for button electrode failure.It is concluded that the insulation of the encapsulated steel-ceramic weakens the intermolecular bonding force under operating conditions such as drilling fluid erosion,reduces the bond strength of the metal interface,and leads to mud infiltration.The reduction in insulation leads to failure of the azimuth resistivity measurement.This article optimized the material selection and structure to effectively improve the sealing and insulation properties of button electrodes,and after field testing and verification,meeting the requirements for a single drilling application in large displacement horizontal wells,and providing technical support for the development of unconventional oil and gas resources using near bit drilling instruments.
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