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NTIS 바로가기국가/구분 | United States(US) Patent 등록 |
---|---|
국제특허분류(IPC7판) |
|
출원번호 | US-0678253 (1984-12-05) |
우선권정보 | CA-0444889 (1984-01-09) |
발명자 / 주소 |
|
인용정보 | 피인용 횟수 : 28 인용 특허 : 1 |
An insertion drive system for a well head tree saver includes a pair of parallel, spaced beams, a lower one of which is attached to the tree. High pressure tubing is held by the upper beam and is inserted into or withdrawn from the tree by motor driven mechanical jack assemblies which lower or raise
A drive system for inserting a mandrel tube into a well head tree saver, said system comprising: a pair of spaced beam members including a first, lower beam member adapted to be mounted onto said tree saver and through which said mandrel tube is to be inserted; a second, upper beam member parallel t
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