FIELD: machine building.
SUBSTANCE: group of inventions relates to a downhole catching apparatus, a method of catching an object within a well and a downhole catching tool for catching an object. Downhole catching apparatus comprises a plurality of radially moveable seat members arranged circumferentially around a longitudinal axis, wherein the seat members are moveable between a radially extended configuration and a radially retracted configuration, and a releasable lock arrangement for releasably retaining the seat members in the radially extended configuration and against radial movement towards a radially extended configuration.
EFFECT: technical result is higher efficiency of the catching apparatus.
38 cl, 15 dwg
| Title | Year | Author | Number |
|---|---|---|---|
| SELECTIVE AND NONSELECTIVE LAYOUT OF MOUNTING MANDREL WITH INNER SLEEVE DISPLACING UPWARDS | 2011 |
|
RU2537445C2 |
| WHIPSTOCK FOR REENTERING SIDE TRUNK OF MULTIPLE WELL | 2018 |
|
RU2672080C1 |
| METHOD OF OBJECT POSITIONING, ORIENTATION AND FIXATION AT PRESET DEPTHS, METHOD OF DRILLING AND REPEATED REENTRY INTO WELL SIDE BRANCHES AND LANDING-AND-ORIENTING UNIT FOR EMBODIMENT OF METHODS | 1997 |
|
RU2147665C1 |
| DOWNHOLE ROTOR DRILLING ASSEMBLY WITH ELEMENTS CONTACTING ROCKS AND WITH CONTROL SYSTEM | 2011 |
|
RU2540761C2 |
| FIXING DEVICE FOR EARTH DRILL AND EARTH DRILL SYSTEM WITH SPECIFIED FIXING DEVICE | 2009 |
|
RU2487986C2 |
| SYSTEM AND METHOD FOR MULTI-STAGE STIMULATION OF WELLS | 2019 |
|
RU2759114C1 |
| DOWNHOLE DEVICE AND METHOD | 2013 |
|
RU2629027C2 |
| DOWNHOLE APPARATUS AND METHODS | 2013 |
|
RU2604367C2 |
| DOWNHOLE DEVICE AND METHOD | 2013 |
|
RU2637351C2 |
| STRING DISCONNECTOR | 2001 |
|
RU2203386C2 |
