A selection pass-through push-down locator
A technology of locator and positioning boss, which is applied in the direction of wellbore/well components, earthwork drilling and production, etc. It can solve the problems of insufficient reliability of hydraulic locator, and achieve the effects of reasonable force, accurate and reliable positioning, and convenient on-site operation
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[0036] In order to further understand the invention content, characteristics and effects of the present invention, the following examples are given, and detailed descriptions are as follows in conjunction with the accompanying drawings:
[0037] Such as figure 1As shown, this embodiment provides a selectable through-type push-down locator, which is composed of an inner and outer two-layer structure that can slide relatively, including an upper joint 1, a sealing ring 2, a gasket 3, a spring 4, an upper mandrel 5, Sliding head 6, upper connecting sleeve 7, gasket 8, lower connecting sleeve 9, reversing sleeve 10, sliding pin 11, sealing ring 12, lower mandrel 13, work cylinder 14, sealing ring 15, lower joint 16; The positioning collar 17 is matched, and the positioning can be repeated many times and selectively positioned by lifting and lowering the pipe string.
[0038] The inner layer structure of the selected pass-through press locator in this embodiment is: the upper join...
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