WO2007136667A1 - Outil magnétique pour débris de bouchon de packer à activation en fond de puits - Google Patents

Outil magnétique pour débris de bouchon de packer à activation en fond de puits Download PDF

Info

Publication number
WO2007136667A1
WO2007136667A1 PCT/US2007/011764 US2007011764W WO2007136667A1 WO 2007136667 A1 WO2007136667 A1 WO 2007136667A1 US 2007011764 W US2007011764 W US 2007011764W WO 2007136667 A1 WO2007136667 A1 WO 2007136667A1
Authority
WO
WIPO (PCT)
Prior art keywords
debris
packer
mandrel
tool
plug
Prior art date
Application number
PCT/US2007/011764
Other languages
English (en)
Inventor
Maximiliano Mondelli
George Krieg
David Hebert
Dewayne Turner
Original Assignee
Bj Services Company
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Bj Services Company filed Critical Bj Services Company
Publication of WO2007136667A1 publication Critical patent/WO2007136667A1/fr

Links

Classifications

    • E—FIXED CONSTRUCTIONS
    • E21—EARTH OR ROCK DRILLING; MINING
    • E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
    • E21B31/00—Fishing for or freeing objects in boreholes or wells
    • E21B31/06—Fishing for or freeing objects in boreholes or wells using magnetic means

Definitions

  • the present invention relates generally to a downhole magnetic debris tool connected to the bottom of a packer isolation plug.
  • the disclosed tool includes a magnetic shield assembly that shields the magnets as the packer isolation plug assembly is run into the well.
  • the packer isolation plug is inserted into the internal seal bore of a set packer to protect the seal bore from damage and debris while a well bore is perforated.
  • the magnets of the downhole magnetic debris tool are unsheathed upon removal of the packer isolation plug from the set packer allowing the magnets to collect metallic debris deposited on top of the packer. In the unsheathed position, the magnet shield assembly may act as a debris basket collecting nonmetallic downhole debris.
  • the process of perforating and gravel packing or fracturing is a well known method to potentially increase the production of a well.
  • the process of perforating the well generally produces debris within the wellbore.
  • a designated zone of the wellbore is hydraulically isolated within the wellbore to be perforated and then gravel packed or fractured.
  • the designated zone may be hydraulically isolated by setting a packer within the wellbore below the zone of interest, which hydraulically isolates the designated zone from wellbore below. While the hydraulic isolation of the zone prevents the debris from traveling downhole, debris from the perforation process may settle on top of the packer.
  • the perforation of a well creates various debris in the wellbore such as gun debris, steel particles, cement, and/or well formation material.
  • Some of this debris may be removed from the wellbore by reverse circulation of the well fluids.
  • reverse circulation typically cannot remove all of the debris from the wellbore.
  • the well may include a configuration that increases the difficulty of removing of debris by reverse circulation.
  • the removal of the debris via reverse circulation can be very difficult.
  • the debris itself may also present difficulties its removal from the wellbore.
  • steel particles are generally difficult to remove from the well by reverse circulation.
  • Reverse circulation may also allow for potential fluid loss from the well perforations.
  • U.S. patent no. 3,520,359 discloses a magnetic tool consisting of a non-magnetic casing which houses a plurality of permanent magnets. The casing includes a fluid path to provide the circulation of fluid downwardly through the magnetic tool in an attempt to wash away non-magnetic materials.
  • the magnetic tool disclosed in U.S. patent no. 3,520,359 is not generally equipped to collect magnetic debris off the top of a packer, but rather collects magnetic debris as the tool travels down the wellbore.
  • the magnets of the disclosed tool are unshielded as the tool is moved within the well allowing the magnets to collect magnetic particles prior to arrival at a desired collection zone.
  • Another type of magnetic fishing device is disclosed in Canadian Patent Application No. 2,232,941.
  • This patent application is directed to cutting openings or windows in a downhole casing and discloses that the apparatus of the application can be used with a magnetic retrieval tool.
  • the magnetic retrieval tool disclosed may be used to retrieve sections of the casing that are cut out from the casing.
  • the application discloses that the magnets of the fishing device may initially be shielded when ran into the well, but fails to disclose an efficient configuration for collecting debris from off the top of a packer. Further, the magnets of the disclosed device must be manually unshielded prior to collecting of the sections of the casing.
  • U.S. Patent No. 6,269,877 discloses a magnetic collection tool that is attached to the bottom of a perforating gun assembly.
  • the object of the magnetic collection tool is to collect metallic debris as it falls past the magnets located below the perforation gun.
  • the magnetic collection tool is not configured to collect metallic debris off the top of a packer, which will inevitably be present even with the presence of a magnetic tool below the perforation gun.
  • the magnets of the tool are unshielded as the assembly is moved within the well, thus allowing for the magnets to collect particles prior to arrival in the desired collection zone.
  • None of the above discussed magnetic collection devices are adapted to specifically collect metallic debris from on top of an well isolation device, such as a packer.
  • Each of the above discussed collection devices are for the collection of metallic debris, but none are adapted to also remove non-metallic debris that may remain in the wellbore after fluid circulation has been completed. iooo9
  • a downhole magnetic debris tool that is adapted to collect metallic debris from the top of an isolation packer set in a wellbore. It would also be desirable to provide a downhole magnetic debris tool that shields the magnet when the tool is ran into the well, but that automatically unsheathes the magnets when desired. It would further be desirable to provide a downhole magnetic debris tool that is adapted to collect both metallic debris as well as non-metallic debris while traveling up the wellbore. It would also be desirable to provide a downhole assembly adapted to protect and seal the inner seal bore of a downhole packer that also includes means for cleaning off the packer upon removal of the assembly.
  • the present invention is directed to overcoming, or at least reducing the effects of, one or more of the issues set forth above.
  • the object of the present disclosure is to provide a downhole magnetic debris tool that may be connected to the bottom of a packer plug.
  • the assembly is inserted into the inner seal bore of a packer that is set downhole in a wellbore, thus sealing the packer and protecting the inner seal bore of the packer from being damaged during the perforation of the casing.
  • the assembly also prevents the passage of debris through the inner seal bore to the wellbore below the packer.
  • the magnets of the downhole magnetic debris tool may be shielded while the assembly is tripped into the well to prevent the premature collection of metallic debris. After the well has been perforated, the assembly is removed from the packer seal bore.
  • the removal of the assembly from the isolation packer internal seal bore may automatically cause the magnets of the tool to unsheathe such that the magnets may collect metallic debris as they pass the top of the set packer.
  • the assembly also may provide means for the collection of non-metallic debris as the assembly travels away from the packer.
  • the downhole magnetic debris tool hereinafter "magnetic debris tool,” of the present disclosure may be connected to a conventional packer isolation plug.
  • the magnetic debris tool may include a top adapter having a first end connected to a lower portion of the packer isolation plug and a second end connected to an upper portion of an internal mandrel.
  • the outer diameter of the internal mandrel may be slotted to accept magnet tubes.
  • An internal adapter or internal coupling may be connected to the lower connection of the internal mandrel, the internal coupling allowing additional internal mandrels and internal couplings to be connected together to configure the assembly with a desire length.
  • the magnetic debris tool includes a guide nose that is connected to the bottom end of the lowest internal mandrel.
  • the guide nose may provide an easier entry into the internal seal bore of the isolation packer.
  • Each of the above components may be comprised of any material that provides adequate material strength and anti-corrosive properties, such as stainless steel, as would be appreciated by one of ordinary skill in the art having the benefit of this disclosure. loo ⁇ i
  • the top adapter, internal mandrel couplings, and guide nose each are connected to the internal mandrel.
  • Each of these components may include an internal counter bore that corresponds to the outer diameter of the internal mandrel. Due to the internal counter bore, each end of the internal mandrel may be positioned within the corresponding adjacent top adapter, internal coupling or guide nose. Slots may be cut into the major outer diameter of the internal mandrel to create a cavity between the bottom of the slot and the inner diameter of the counter bore on each end.
  • the magnet tubes may be located in the slots and housed within the corresponding cavities.
  • the internal mandrel may be substituted with a slotted tubing that houses magnet tubes.
  • the slotted tubing would be comprised of stainless steel, but could be comprised of other materials as would be appreciated by one of ordinary skill in the art having the benefit of this disclosure.
  • the slotted housing includes a machined undercut and a buffer material (i.e., brass) sleeve which together houses the magnet tubes.
  • a steel tubing mandrel is the preferred means for connecting the top adapter and the guide nose.
  • the magnet tube may comprise a stainless steel tube that has a solid plug, which may be stainless steel, on each end of the tube and rare earth magnets located between the plugs in the inner diameter of the tube.
  • the rare earth magnets may be neodymium magents or samarium cobalt magnets.
  • the plugs may be connected by various means to each end of the magnet tube. For example, in one such embodiment each plug is fully seamed welded to the magnet tube.
  • the plugs may include a machined recess that is utilized to fill the cavity between the internal mandrel, top adapter, couplings or guide nose, such that the magnet tubes are securely retained within the assembly.
  • the magnetic debris tool may include means for shielding the magnets while the magnetic debris tool is ran into the well.
  • two sleeves working in combination may shield the entire magnet assembly, preventing the magnets from picking up any metallic debris while tripping in the wellbore.
  • one of the shielding sleeves may be a steel tubing sleeve while the other sleeve may be a stainless steel tubing sleeve.
  • These two sleeves are connected to an indicating collet or other indicating device which is located at an upper portion of the magnetic debris tool, but below the top adapter.
  • a top collet sub is connected to the upper portion of the collet.
  • the top collet sub includes means to secure the collet and attached components in the unsheathed position when the tool is actuated downhole.
  • a bottom collet adapter may connect the indicating collet to the magnet shields.
  • a shearable connecting means such as a set of shear pins or shear screws, that fasten the indicating collet, bottom collet adapter, and magnet shields to the internal mandrel.
  • One embodiment of the present disclosure is the method of running the magnetic debris tool into the well and removing debris after perforation of the well casing has been completed.
  • a packer isolation plug After an isolation packer has been set within a wellbore, but prior to perforating the casing wall, a packer isolation plug must be placed within the internal seal bore of the isolation packer to prevent damage to the internal seal bore. Additionally, the placement of a packer isolation plug prevents debris from entering the lower interval completion hardware. By modifying the lower portion of the packer isolation plug, a down-hole magnetic debris tool is made up to the packer isolation plug. The packer isolation plug / debris magnetic tool assembly must be set in the packer prior to perforating the casing wall.
  • the collet When setting the assembly into the packer seal bore the collet will indicate through the isolation packer bore and a snap latch of the isolation plug will locate in the isolation packer, which both ensure the correct placement of the assembly within the seal bore.
  • the magnetic debris tool will be located below the packer isolation plug in the lowermost portion of the isolation packer and also any accessory equipment connected to the isolation packer.
  • the accessory equipment may be any accessory, such as a multiple service closing sleeve, an internal seal bore extension, or a seal house extension, as would be appreciated by one of ordinary skill in the art having the benefit of this disclosure.
  • the casing-perforating assembly will be run into the wellbore with the packer isolation plug / magnetic debris tool assembly. After the packer isolation plug / magnetic debris tool assembly has been secured within the internal seal bore, the casing-perforating assembly may be separated from the assembly and pulled up to the perforation zone. Due to the perforation operation, the casing annular area between the casing perforating assembly and the lower packer will contain debris such as casing steel particles, cement, formation material and potentially other unforeseen debris. iooi9i After the perforation of the wellbore, the operator will usually attempt to reverse circulate the well fluid in an attempt to kill the well. The casing-perforation assembly will be pulled from the well upon completion of the fluid circulation.
  • the next phase is to enter the well bore with the packer plug retrieving tool.
  • the operator Prior to retrieving the packer plug the operator will usually attempt to reverse circulate the well fluid in an attempt to remove the previously mentioned debris from the casing annular area. Steel particles are especially difficult to remove by reverse circulation. Also wellbores that include tapered strings or liner tops may further exacerbate the removal of the debris by reverse circulation. Typically high annular velocities (pump rates) combined with viscous polymer pill sweeps fall short of completely removing the debris under these adverse well conditions. Reverse circulating the debris from the well provides limited benefits due to the potential for fluid loss to open perforations.
  • the operator can use the magnetic debris tool to remove debris that remains in the well bore.
  • the isolation plug / magnetic debris tool assembly must be removed from the internal seal bore of the isolation packer.
  • the operator may use a running tool to pull up on a retrieval neck that may be connected to the top of the isolation plug.
  • the indicating collet of the magnetic debris tool will indicate in the internal seal bore of the isolation packer.
  • a pre-designated downward force is required to snap the indicating collet, when picking up, through the internal seal bore.
  • the specific dimensions, configuration, and materials of the indicating collet and the internal seal bore may be adapted to vary the requisite downward force required to snap the collet through the internal seal bore.
  • the downward force applied to the indicating collet is also asserted on the shearable connecting means, such as shear pins or shear screws, which secure the indicating collet and magnet shield to the internal mandrel.
  • the shearable connecting means are adapted to shear or break before the indicating collet is pulled through the internal seal bore of the isolation packer.
  • the internal shaft may include a shaft coupling on its upper end.
  • the magnetic debris tool may include a stop positioned such that will engage the shaft coupling once the indicating collet, magnet shield, and internal shaft assembly has traveled downwards a predetermined distance. Once the shaft coupling has engaged the stop, the string pick up tension will allow the collet to snap through the internal seal bore of the isolation packer. I0022
  • the magnet shield assembly may include an open bore that may act as a junk collection basket collecting debris as the assembly is stroked out of the wellbore.
  • the down-hole debris magnetic tool will retain the collected debris and remove out of the hole up to the surface.
  • Figure 1 is a cross-section of an assembly comprised of a magnetic debris tool and an isolation packer plug 10.
  • Figure 2 is a cross-section of the assembly of Figure 1 after the assembly has been pulled from the internal seal bore of an isolation packer.
  • Figure 3 is the cross-section of one embodiment of the bottom connector 170 that includes recessed portions 141 to house retention lugs and open passages 146.
  • Figure 4 is an isometric view of the magnetic debris tool 100 in the non-actuated state.
  • Figure 5 is an isometric view of the magnetic debris tool 100 of Figure 4 in the actuated state.
  • Figure 1 shows one embodiment of an assembly, in a non-actuated position, consisting of a magnetic debris tool 100 attached to the lower portion of an isolation packer plug 10.
  • a retrievable neck 5 is attached to the isolation packer plug 10 and provides an interface for a running tool to retrieve the assembly after it has been inserted into an isolation packer.
  • the magnetic debris tool 100 may be used in conjunction with any conventional packer plug as would be appreciated by one of ordinary skill in the art having the benefit of this disclosure.
  • the magnetic debris tool 100 includes a top adapter 20 which is connected to the lower portion of the packer isolation plug 10 and also connected to an upper portion of an internal mandrel 50. (oo32
  • the bottom collet adapter 70 fastens the collet 40 and the magnet shield 90 together.
  • the bottom collet adapter 70 is secured to the internal mandrel 50 through shearable connecting means 60.
  • Shearable connecting means 60 may comprise shear pins or shear screws that shear upon the exertion of a predetermined force.
  • a top collet sub 144 is connected to the upper portion of the indicating collet 40.
  • the top collet sub 144 includes recessed portions 145 for the engagement of the retention lug 140 as discussed below. ioo33
  • the internal mandrel 50 is further connected to a magnet mandrel 130 by an internal adapter 80.
  • Magnets 1 10 are connected to the magnet mandrel 130.
  • a magnet spacer 120 separates the two magnet sections 110.
  • the magnet mandrel 130 contains a hollow central bore and is connected on the lower end to a bottom connector 170.
  • the lower end of the bottom connector 170 includes at least one retention lug 140, which is spring loaded.
  • the bottom connector 170 includes three retention lugs 140 spaced equilaterally around its lower perimeter. While in the non-actuated state as shown in Figure 1, the spring of the retention lug 140 is compressed and the retention lug 140 rests flush against the inner magnet shield 91.
  • An internal shaft 25 is located within the inner bore of the magnet mandrel 130.
  • a shaft coupling 30 is located on the upper end of the internal shaft 25.
  • the lower end of the internal shaft 25 is connected to a guide nose 160.
  • the guide nose 160 includes fluid passages 165, which allows for the drainage of fluid as will be discussed below.
  • the guide nose 160 is also connected to the lower end of the magnet shields 90, 91.
  • the magnet shield 90 may be comprised of an inner sleeve 91 and an outer sleeve 90.
  • One purpose of the guide nose 160 is to ease entry into the internal seal bore of the isolation packer. Further, the guide nose 160 acts to combine the top collet sub 144, collet 40, bottom collet adapter 70, magnet shield 90, and the internal shaft 25 as a "shield assembly". While the isolation packing plug 10 and magnetic debris tool 100 is tripped into the well, the shield assembly is connected to the internal mandrel 50 by the shearable connecting means 60.
  • Figure 2 shows the isolation packer plug / magnetic debris tool assembly in the actuated position after is has been pulled from the internal seal bore of an isolation packer.
  • the retrievable neck 5 may be used to pull the assembly out of the internal seal bore.
  • the collet 40 requires a pre-determined force be applied to the assembly to snap the collet 40 through the internal seal bore.
  • the shearable connecting means 60 is adapted to shear when a predetermined force has been exerted on the connecting means 60.
  • the force required to shear the connecting means 60 is designed to be less than the force required to snap the collet 40 through the internal seal bore.
  • the shearable connecting means 60 shears before the assembly is pulled from the isolation packer.
  • the shield assembly which includes the top collet sub 144, the collet 40, the bottom collet adapter 70, the magnet shields 90, 91, and the internal shaft 25 travels down the magnetic debris tool 100 away from the isolation plug 10.
  • the internal shaft 25 travels down the inner bore 1 1 1 of the magnet mandrel 130 until the shaft coupling 30 of the internal shaft 25 lands on the upper end of the bottom connector 170.
  • the shield assembly has fully extended away from upper end of the tool completely unsheathing the magnets 110.
  • the magnets 110 are then able to collect metallic debris located in the well and in particular metallic debris that has collected on the top of the isolation packer as the magnetic debris tool 100 moves past the isolation packer.
  • the shield assembly may be locked into the actuated or fully extended position by the engagement of retention lugs 140 into the recessed portions 145 of the top collet sub 144.
  • three retention lugs 140 are spaced equilaterally around the perimeter of the bottom connector 170.
  • the number and mechanism of the retention lugs may be varied to lock the shield assembly in the actuated position as would be appreciated by one of ordinary skill in the art having the benefit of this disclosure.
  • the shaft coupling 30 in combination with the upper end of the bottom connector 170 are provided as an additional measure to prevent the travel of the shield assembly off of the magnetic debris tool 100 in the event the retention lug locking mechanism fails.
  • the shield assembly includes an inner cavity 112 when in the extended position.
  • the inner cavity 112 of the shield assembly may act as a debris basket and collect wellbore debris as the tool is pulled up the wellbore. Debris may enter into the inner cavity 112 through the openings 146 located around the perimeter of the bottom connector 170 as shown in Figure 3.
  • the guide nose 160 may include at least one fluid path 165 provided to allow well fluids to drain from the inner cavity 112 of the shield assembly.
  • Figure 3 is the cross-section of one embodiment of the bottom connector 170.
  • the bottom connector 170 includes flanges 147 having retaining lugs 140 that are adapted to expand into a recessed area in the top collet sub 144.
  • the bottom connector 170 includes openings 146 located between adjacent flanges 147. The openings 146 allow for the entrance of debris and fluid into inner cavity 1 12 of the shield assembly as the magnetic debris tool 100 travels up the well.
  • the bottom connector 170 also includes a central opening 148 through which the internal mandrel 25 may travel. As discussed above, the upper portion of the bottom connector 170 is connected to the magnet mandrel 130 as well as the magnet assembly 100.
  • FIG 4 is an isometric view of the magnetic debris tool 100 in the non-actuated stage.
  • the magnets 110 are sheathed within the magnet shield 90. In this position the magnetic debris tool 100 may be run into the wellbore without collecting any metallic debris.
  • a top adapter 20 is located at the upper end of the magnetic debris tool 100.
  • the collet 40 is positioned directly below the top adapter and is connected to the bottom collet adapter 70, which holds the magnet shield 90 in the sheathed position.
  • the bottom collet adapter 70 is connected to an inner mandrel 50 (shown in Figure 5) by a set of shear screws.
  • FIG. 4 The embodiment shown in Figure 4 includes two sets of magnets 110 separated by a spacer 120.
  • the end of the magnetic debris tool 100 includes a guide nose 160.
  • Figure 5 shows the magnetic debris tool 100 of Figure 4 in the actuated state. A force has been exerted on the magnetic debris tool 100 shearing the set of shear pins that connect the bottom collet adapter 70 to the inner mandrel 50 allowing the collet 40, bottom collet adapter 70, magnet shield 90, and guide nose 160 to travel down the magnetic debris tool 100 until reaching a fully extended position. The travel of these components is limited by an internal shaft having a shaft coupling on its upper end, which lands on the bottom connector 70.
  • the movement of the magnet shield 90 unsheathes the magnets 110, which may be separated by a magnet spacer 120.
  • the upper end of the magnet 110 is connected to an internal mandrel 50 by an internal adapter 80.
  • the internal mandrel is connected to the top adapter 20 of the magnetic debris tool 100.
  • the magnetic debris tool 100 may collect metallic debris located within the wellbore.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Geology (AREA)
  • Mining & Mineral Resources (AREA)
  • Marine Sciences & Fisheries (AREA)
  • Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Fluid Mechanics (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Earth Drilling (AREA)
  • Drilling And Boring (AREA)

Abstract

La présente invention concerne un outil magnétique pour débris de fond de puits (100) qui peut être relié à la partie inférieure d'un bouchon isolant de packer. Cet outil magnétique pour débris de fond de puits peut comprendre un ensemble d'écran magnétique (90) qui fait écran aux aimants (110) et empêche l'accumulation de débris magnétiques lorsque l'ensemble bouchon isolant de packer (10) est conduit dans le puits. L'ensemble bouchon isolant de packer est inséré dans l'alésage d'étanchéité interne d'un packer installé. L'ensemble protège l'alésage d'étanchéité d'un endommagement et empêche les débris de se déplacer vers le fond du puits. L'écran peut être retiré des aimants de l'outil magnétique pour débris de fond de puits lorsque le bouchon isolant de packer est retiré du packer. L'outil magnétique pour débris de fond de puits peut être utilisé pour collecter des débris magnétiques qui se sont accumulés sur la partie supérieure du packer. De plus, l'ensemble d'écran magnétique peut servir de panier collecteur de débris de fond de puits lorsque l'ensemble est retiré du puits.
PCT/US2007/011764 2006-05-17 2007-05-16 Outil magnétique pour débris de bouchon de packer à activation en fond de puits WO2007136667A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US80115206P 2006-05-17 2006-05-17
US60/801,152 2006-05-17

Publications (1)

Publication Number Publication Date
WO2007136667A1 true WO2007136667A1 (fr) 2007-11-29

Family

ID=38537872

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2007/011764 WO2007136667A1 (fr) 2006-05-17 2007-05-16 Outil magnétique pour débris de bouchon de packer à activation en fond de puits

Country Status (2)

Country Link
US (1) US20070267196A1 (fr)
WO (1) WO2007136667A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2504105A (en) * 2012-07-18 2014-01-22 Servwell Engineering Ltd A magnetic cleaning tool for collecting ferrous debris in a wellbore and a method of cleaning a wellbore.

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8800660B2 (en) * 2009-03-26 2014-08-12 Smith International, Inc. Debris catcher for collecting well debris
US9359871B2 (en) 2012-03-05 2016-06-07 Baker Hughes Incorporated Debris catcher for retrievable barrier
US9440341B2 (en) 2013-09-18 2016-09-13 Vetco Gray Inc. Magnetic frame and guide for anti-rotation key installation
EP2868862A1 (fr) 2013-11-05 2015-05-06 Weatherford/Lamb Inc. Appareil d'extraction magnétique
GB2577481B (en) * 2018-09-17 2021-01-13 Sub Drill Supply Ltd Magnetic cleaning apparatus and method of use thereof

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020079A (en) * 1959-09-29 1962-02-06 Deutsche Erdoel Ag Magnetic grappling mechanism for lost well drilling apparatus
US3441307A (en) * 1967-07-25 1969-04-29 Charlie F Farmer Electromagnetic well service tool
DE3543295A1 (de) * 1985-12-07 1987-06-25 Christensen Inc Norton Fangwerkzeug zum entfernen eisenhaltiger spaene aus tiefbohrloechern
WO1998005845A1 (fr) * 1996-08-08 1998-02-12 Baker Hughes Incorporated Procede de percement d'une fenetre dans un cuvelage
US6655462B1 (en) * 1999-05-29 2003-12-02 Sps-Afos International Limited Magnetic well cleaning apparatus

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US615589A (en) * 1898-12-06 Oil-well fishing-tool
US2417762A (en) * 1944-04-14 1947-03-18 Koller Steven Tool for magnetic lifting
US3067821A (en) * 1960-04-07 1962-12-11 Crooks George Carl Magnetic junk basket assembly for drill strings
US3520359A (en) * 1968-06-27 1970-07-14 Herman T Ehrlich Magnetic junk basket
US3556220A (en) * 1969-04-01 1971-01-19 Otis Eng Co Well tools
CA2259776C (fr) * 1999-01-21 2001-07-31 Ian B. Zeer Assemblage magnetique pour perforateur de tubage de puits

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3020079A (en) * 1959-09-29 1962-02-06 Deutsche Erdoel Ag Magnetic grappling mechanism for lost well drilling apparatus
US3441307A (en) * 1967-07-25 1969-04-29 Charlie F Farmer Electromagnetic well service tool
DE3543295A1 (de) * 1985-12-07 1987-06-25 Christensen Inc Norton Fangwerkzeug zum entfernen eisenhaltiger spaene aus tiefbohrloechern
WO1998005845A1 (fr) * 1996-08-08 1998-02-12 Baker Hughes Incorporated Procede de percement d'une fenetre dans un cuvelage
US6655462B1 (en) * 1999-05-29 2003-12-02 Sps-Afos International Limited Magnetic well cleaning apparatus

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2504105A (en) * 2012-07-18 2014-01-22 Servwell Engineering Ltd A magnetic cleaning tool for collecting ferrous debris in a wellbore and a method of cleaning a wellbore.
WO2014013250A2 (fr) * 2012-07-18 2014-01-23 Servwell Engineering Limited Outil de nettoyage magnétique
WO2014013250A3 (fr) * 2012-07-18 2014-11-27 Servwell Engineering Limited Outil de nettoyage magnétique
GB2504105B (en) * 2012-07-18 2015-07-08 Servwell Engineering Ltd Magnetic cleaning tool
US20150192000A1 (en) * 2012-07-18 2015-07-09 Servwell Engineering Limited Magnetic Cleaning Tool
AU2013291753B2 (en) * 2012-07-18 2017-03-30 Servwell Engineering Limited Magnetic cleaning tool
US9863217B2 (en) 2012-07-18 2018-01-09 Servwell Engineering Limited Magnetic cleaning tool

Also Published As

Publication number Publication date
US20070267196A1 (en) 2007-11-22

Similar Documents

Publication Publication Date Title
US7380604B2 (en) One trip cemented expandable monobore liner system and method
AU2014293589B2 (en) One trip drill and casing scrape method and apparatus
US5954130A (en) Retrievable milling guide anchor apparatus and associated methods
US8186427B2 (en) One trip cemented expandable monobore liner system and method
RU2341640C2 (ru) Башмак для системы крепления расширяемого хвостовика и способ заканчивания скважины
US20070267196A1 (en) Downhole activated packer plug magnetic debris tool
US20160145956A1 (en) Whipstock and deflector assembly for multilateral wellbores
EP0899419A2 (fr) Système et procédé pour isoler une zone dans un trou de forage
US9512705B2 (en) Multilateral bore junction isolation
RU2755763C1 (ru) Способы и системы бурения многоствольных скважин
CA2915624A1 (fr) Ensemble d'outil et procede de forage de puits ramifies ou multilateraux a l'aide de sifflet deviateur
US7458422B2 (en) One trip cemented expandable monobore liner system and method
EP0297899A1 (fr) Dispositif et méthode pour libérer un raccord à fenêtre latérale
CA2597563C (fr) Systeme de chemisage a sondage unique expansible cimente a usage unique et procede
EP2898181B1 (fr) Isolation de raccord de forage multilatéral
CA2597564C (fr) Systeme a usage unique de chemisage a sondage unique expansible cimente et procede
AU2010235951B2 (en) One trip cemented expandable monobore liner system and method
EA039924B1 (ru) Изоляция разветвления многоствольной скважины

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 07777109

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 07777109

Country of ref document: EP

Kind code of ref document: A1