| 序号 | 专利名 | 申请号 | 申请日 | 公开（公告）号 | 公开（公告）日 | 发明人 |
|---|---|---|---|---|---|---|
| 161 | Oil-well fishing tool | US52667622 | 1922-01-03 | US1455237A | 1923-05-15 | BONNET FREDERICK C; RAYMOND FRANKLIN |
| 162 | Fishing tool | US35208420 | 1920-01-17 | US1439687A | 1922-12-26 | BRANDON ARTHUR H |
| 163 | Carl hoffmann | US474297D | US474297A | 1892-05-03 | ||
| 164 | CASING PROFILING AND RECOVERY SYSTEM | PCT/US2008057398 | 2008-03-19 | WO2008118697A3 | 2008-11-20 | LYNDE GERALD D |
| A casing cutting and recovery tool (10) having a cutting assembly (21), an expansion assembly(60) having one or more deforming members (66), and a recovery assembly (80) is used to cut a window in wellbore casing, secure a removable segment of wellbore casing that was previously disposed within the window, and recover the removable segment of wellbore casing with the tool. One or more cutting assemblies provides one or more cuts in the wellbore casing. The deforming members (66) of the expansion assembly then expand outwardly at least two portions (100, 102) of the wellbore casing(90) shaped by the cut or cuts. The recovery assembly secures the removable segment (110) of the wellbore casing (90) to the tool so that the tool and the removable segment of wellbore casing can be recovered together from the wellbore. | ||||||
| 165 | JUNK BAILER FOR USE IN RETRIEVING DEBRIS FROM A WELL | PCT/US9815551 | 1998-07-24 | WO9905386A3 | 1999-04-15 | HIPP JAMES E |
| An apparatus (10) for removing debris (D) from an oil and gas well is operable with fluid pressure that reciprocates a valving member (20) between upper and lower positions. The valving member (20) seals against a piston (30) in a lowermost position so that the fluid pressure can be used to move both valve member (20) and piston (30) downwardly. The valving member (20) has a valving member spring (28) that, when fully compressed, separates the valving member (20) and piston (30). Once the valving member (20) and piston (30) are separated, the piston (30) is no longer supported in the lowermost position because fluid pressure is relieved through the piston bore. A piston spring (40) then thrusts the piston (30) upwardly, causing it to pump fluid from a position outside the lower end of the tool body through an intake portion (14) into a cavity, pulling debris therewith. Pivoting flexible finger members (56, 57) or brushes are positioned at the lower end of the tool body and are moveable between open and closed positions for intaking the debris when in the opened position and for trapping debris when in the closed position. Staging magnets (63) are attached to the body of the tool. The flexible fingers (56, 57) or brushes move the debris from magnet (63) to magnet (63) in stages, finally reaching a storage area. | ||||||
| 166 | IMPROVED DOWNHOLE TOOL AND METHOD | PCT/GB2011050191 | 2011-02-04 | WO2011095816A3 | 2012-03-01 | LINKLATER JAMES |
| A cleaning tool (1) for use in cleaning ferrous material from a wellbore has a magnetic cleaning functionality by provision of magnets (5) in an Halbach array on a downhole tool component of a workstring. The Halbach array may be an Halbach cylinder positioned on a mandrel wherein the magnetic field is external to the cylinder with substantially zero magnetic field within the tool. | ||||||
| 167 | IMPROVED DOWNHOLE TOOL | PCT/GB2009050865 | 2009-07-16 | WO2010007434A3 | 2010-04-22 | TELFER GEORGE; LINKLATER JAMES; ATKINS JAMES EDWARD |
| A cleaning tool (1) for use in cleaning ferrous material from a wellbore has a magnetic cleaning element (14) mounted to a tool body (2) within a slot (5) using a releasable concealed interference fit fastener assembly (15) comprising a fastener member having a head (16), and a shank (17) with a configured end (18) and a deformable fastener ring (20) adapted to fit closely over the shank, and a press-fit collar (21) adapted to deform the deformable fastener ring upon the configured end of the shank when assembled, and wherein the respective head and collar are each flanged to permit an interference fit with a corresponding contact surface of the tool body around said slot. | ||||||
| 168 | MAGNET ARRANGEMENT FOR USE ON A DOWNHOLE TOOL | PCT/US2005020478 | 2005-06-10 | WO2005124098A3 | 2006-06-22 | SILGUERO BENNY L |
| The present invention relates to a downhole tool for removing metallic debris from a well bore. He downhole tool includes a plurality of magnets disposed on the tool body. The plurality of magnets are arranged in a bucking arrangement such that repulsing forces are generated between neighboring pairs of the plurality of magnets. The bucking arrangement results in an expanded reach of the magnetic fields of the magnets to enhance the removal of metallic debris. | ||||||
| 169 | MAGNETIC CLEANING TOOL | PCT/GB2013051910 | 2013-07-17 | WO2014013250A2 | 2014-01-23 | COOPER RUAIRIDH ANDREW |
| A magnetic cleaning tool for collecting ferrous debris in a wellbore and a method of cleaning a wellbore. The magnetic cleaning tool has a tool body for attachment in a work string, one or more magnets supported on the tool body, and a sleeve located around the tool body which is arranged to be moveable along the body to provide selective coverage of the magnets. Embodiments are described providing shear pins and spring loaded balls to hold the sleeve either over the magnets or free of the magnets. An expandable piston, moveable by action of a drop ball, is described to release the sleeve. The sleeve is arranged so that the magnets can be covered and therefore effectively inactive on run-in and during downhole operations, and uncovered to be active when pulled out of the wellbore. | ||||||
| 170 | MAGNETIC RETRIEVAL APPARATUS AND METHOD FOR RETAINING MAGNETS ON DOWNHOLE MAGNETIC RETRIEVAL APPARATUS | PCT/US2011038082 | 2011-05-26 | WO2011153058A3 | 2012-03-01 | NELSON JONATHAN F; HERN GREGORY L |
| Magnetic retrieval tools for use in a wellbore or other tubular member to remove metallic debris. A magnetic retrieval tool includes a tool body having a central shaft with a plurality of ribs that project radially outwardly therefrom. The ribs present lateral sides that have recesses formed therein. Magnet bars are retained within the recesses by wedge members and retaining rings. The magnet bars include a hollow protective housing that encloses a plurality of magnets. Retaining plugs are used to secure the magnets within the housing. | ||||||
| 171 | RETAINING AND ISOLATING MECHANISMS FOR MAGNETS IN A MAGNETIC CLEANING TOOL | PCT/US2011035457 | 2011-05-06 | WO2011146253A3 | 2012-02-23 | HERN GREGORY L; PALMER LARRY T; NELSON JONATHAN F |
| A magnetic retrieval tool used for collecting metallic debris and material from within a wellbore or other surrounding downhole tubular. The tool includes a tool mandrel. A removable insert resides upon the tool mandrel. The insert retains a plurality of individual magnets in a fixed array or matrix surrounding the mandrel. | ||||||
QQ群二维码
意见反馈
意见反馈