HYDRAULIC LOCATOR

摘要

There is provided a locator configured for coupling to a workstring for locating a wellbore feature, The locator includes a protrusible member, a chamber, a hydraulic fluid supplying passage, and a hydraulic fluid supply source. The protrusible member is moveable, relative to the workstring, and biased for disposition, relative to the workstring, in an extended position. In the extended position, the protrusible member is engageable with the wellbore feature. The first chamber is disposed in fluid pressure communication with the protrusible member, and has a volume configured to change correspondingly with a change in position of the protrusible member such that expansion of the first chamber corresponds with an extension of the protrusible member and such that contraction of the first chamber corresponds with a retraction of the protrusible member. The hydraulic fluid supply source is fluidly coupled to the first chamber via the hydraulic fluid supplying passage. The hydraulic fluid supply source is configured to supply hydraulic fluid to the first chamber in response to an expansion in volume of the first chamber that is effected by the extension of the protrusible member.

主权项

1. A locator configured for coupling to a workstring for locating a wellbore feature comprising:
a protrusible member displaceable, relative to the workstring, and biased for disposition, relative to the workstring, in an extended position, wherein, in the extended position, the protrusible member is engageable with the wellbore feature; a first chamber, disposed in fluid pressure communication with the protrusible member, and whose volume is configured to change correspondingly with a change in position of the protrusible member such that expansion of the first chamber corresponds with an extension of the protrusible member and such that contraction of the first chamber corresponds with a retraction of the protrusible member; a hydraulic fluid supplying passage; and a hydraulic fluid supply source fluidly coupled to the first chamber via the hydraulic fluid supplying passage, the hydraulic fluid supply source being configured to supply hydraulic fluid to the first chamber in response to an expansion in volume of the first chamber that is effected by the extension of the protrusible member.