发明名称 |
INSULATING DEVICE AND ASSEMBLY |
摘要 |
There is disclosed an electrically insulating device in the form of a sleeve (12) for a downhole tool, for electrically insulating a first threaded electrically conductive member in the form of an anchor sub (16) from a second threaded electrically conductive member in the form of an insulated sub (18). An assembly (10) including the sleeve (12) has particular use in measurement while drilling (MWD)/logging while drilling (LWD) procedures. In one embodiment, a third member in the form of a threaded electrically conductive sleeve sub (20) is coupled to the insulated sub by a second sleeve (14), to create an insulated gap between the anchor and sleeve subs (16, 20).
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申请公布号 |
CA2455396(C) |
申请公布日期 |
2013.05.14 |
申请号 |
CA20022455396 |
申请日期 |
2002.07.01 |
申请人 |
MAXWELL DOWNHOLE TECHNOLOGY LIMITED |
发明人 |
FRASER, SIMON BENEDICT;BROWN-KERR, WILLIAM;KNIGHT, JOHN |
分类号 |
E21B17/02;F16L25/02 |
主分类号 |
E21B17/02 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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