发明名称 |
DEPLOYMENT OF DOWNHOLE SENSING DEVICE(S) |
摘要 |
A downhole sensing device deployment control apparatus (10) includes means to control speed of the sensing device progressing within a borehole associated with a drilling operation. A mechanical, electrically powered and/or hydro-dynamic drag/damping means/device (12) can be provided as part of the control apparatus to control speed of deployment down the borehole. The drag device (12) can have a plurality of wheels or rollers to contact an internal bore of an inner pipe of a drill string. Rotation control means (24), (26) can be provided to control an amount of rotation and/or direction of rotation of the wheels or rollers relative to travel of the sensing device within the borehole. Valving (60) can be provided. A two stage (dual) flow/pressure control valve (100) can be provided. A sensing device (release 216) and downhole position latch (202) can be provided. The sensing device can be pumped into the borehole, such as by compressed air. |
申请公布号 |
WO2017015719(A1) |
申请公布日期 |
2017.02.02 |
申请号 |
WO2016AU50680 |
申请日期 |
2016.07.29 |
申请人 |
GLOBALTECH CORPORATION PTY LTD |
发明人 |
STEWART, Gordon;HILL, Raymond |
分类号 |
E21B47/00;E21B7/00;E21B21/08;E21B44/00;E21B49/00;G01V3/18 |
主分类号 |
E21B47/00 |
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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