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Aluminum boron nitride coatings for lubricity and corrosion inhibition of downhole equipment

IP.com Disclosure Number: IPCOM000244230D
Publication Date: 2015-Nov-24
Document File: 1 page(s) / 13K

Publishing Venue

The IP.com Prior Art Database

Abstract

This concept embodies novel coatings which serve dual purposes lubrication and corrosion inhibition Downhole environments can be very harsh as HPHT conditions and corrosive chemicals can be present This is especially true in the case of rotating equipment such as motors In this concept aluminum corrodes forming an adherent layer of aluminum oxide which restricts further corrosion and protects the underlying materials The aluminum along with suitable polymeric and or ceramic additives will also serve as a binder to a lubricant component such as graphite or hexagonal boron nitride The lubricant component minimizes wear and tear due to abrasion The coating can be installed a priori or can be installed real time especially on pipe IDs by flowing a suitable coating down the pipe ID and allowing to set in place This concept differs in that prior work has focused mostly on uni purpose coatings such as those based on corrosion inhibition only or lubricity only This would be particularly helpful for enhancing the performance of downhole services and equipment

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Aluminum-boron nitride coatings for lubricity and corrosion inhibition of downhole equipment

This concept embodies novel coatings which serve dual purposes: lubrication and corrosion inhibition. Downhole environments can be very harsh as HPHT conditions and corrosive chemicals can be present. This is especially true in the case of rotating equipment such as motors. In this concept, aluminum corrodes forming an adherent layer of aluminum oxide, which restricts further corrosion and protects the underlying materials. The aluminum, along with suitable polymeric and/or ceramic additives will also serve as a binder to a lubricant component such as graphite or hexagonal boron nitride. The lubricant component minimizes wear and tear due to abrasion. The coating can be installed a priori, or can be installed real time (especially on pipe IDs) by flowing a suitable coating down the pipe ID and allowing to set in place. This concept differs in that prior work has focused mostly on uni-purpose coatings such as those based on corrosion inhibition only, or lubricity only. This would be particularly helpful for enhancing the performance of downhole services and equipment.