SU976020A1 - Apparatus for repairing casings within a well - Google Patents

Apparatus for repairing casings within a well Download PDF

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Publication number
SU976020A1
SU976020A1 SU813295925A SU3295925A SU976020A1 SU 976020 A1 SU976020 A1 SU 976020A1 SU 813295925 A SU813295925 A SU 813295925A SU 3295925 A SU3295925 A SU 3295925A SU 976020 A1 SU976020 A1 SU 976020A1
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SU
USSR - Soviet Union
Prior art keywords
cone
device
upper
well
head
Prior art date
Application number
SU813295925A
Other languages
Russian (ru)
Inventor
Габдрашит Султанович Абдрахманов
Константин Викторович Мелинг
Галимзян Манапович Ахмадиев
Рустам Хамитович Ибатуллин
Изиль Галимзянович Юсупов
Беньямин Абрамович Лерман
Альберт Габидуллович Зайнуллин
Анатолий Антонович Домальчук
Альберт Мусагитович Ахунов
Руаф Нухович Рахманов
Original Assignee
Татарский научно-исследовательский и проектный институт нефтяной промышленности
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.)
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Application filed by Татарский научно-исследовательский и проектный институт нефтяной промышленности filed Critical Татарский научно-исследовательский и проектный институт нефтяной промышленности
Priority to SU813295925A priority Critical patent/SU976020A1/en
Application granted granted Critical
Publication of SU976020A1 publication Critical patent/SU976020A1/en

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Description

The invention relates to the drilling technique, in particular to a device for installing a blocker in the well, for the purpose of restoring the tightness of casing.

A device for repairing co-5 pipes of casing, containing a hollow rod, stop, conical punch, separator, hydraulic pusher, non-return valve and forming a mandrel, filled in the form of mobile sectors placed on an elastic cylindrical diaphragm GG] is known.

The disadvantage of this device is that it does not allow the mouth * - 15 to pour lengthy shutters, since the simultaneous build-up of a hollow rod and profile shutter causes great difficulties. In addition, when mechanical dornovaniya many 20 holuchevy pipes arise large axial forces on the plaster, which cause it to shift from the place of installation.

2

The closest to the proposed technical essence and the achieved result is a device for repairing casing strings in a well, including a profile shutter, at the ends of which there are upper and lower anchor assemblies in the form of cones with seals and fixing dies, forming a hydraulic chamber with catch, and catching heads, one of which is connected to the cone of the upper anchor node, and the other - with the cone of the lower anchor node D 2).

The disadvantage of this device is the low reliability. This is explained by the fact that each conical locking llashka has two rubbing surfaces with adjacent dies and a crumbling surface with a cone, which is in the conditions of a well in which it was previously. insulating work with cement materials has been

3 976020

four

to their jamming due to an increase in friction coefficient.

The aim of the invention is to improve the reliability of the device.

This goal is achieved by the fact that the gripping and fishing heads have supporting protrusions for interacting with the profile part of the overlay.

FIG. 1 shows a device with an overlap downed into a well,, 0 general view; in fig. 2 - the moment of addition of the profile pipe after straightening it with internal pressure and engaging the upper anchor unit with the mandrel head; in fig. 3 - 15, section A-A in FIG. one; in fig. 4 - section BB in FIG. 2; in fig. 5 is a sectional view BB in FIG. 2

The device contains a profile stopper 1 (FIG. 1), on the cylindrical 20 ends of which the upper and lower anchor nodes are mounted.

The upper anchor assembly contains a cone 2, at one end of which, which is a cylindrical vtulka, is a ~ 25 yen external thread 3 for connecting-. of the coupling 4, as well as the groove 5 for engagement with the hook 6 of the spring-loaded shank of the fixing plate 7. 30

At the other end of the cone 2, provided with a seal 8, there is an internal thread 9 for connecting a gripping head 10 in the form of a cylindrical sleeve with an external mating thread 11 and an internal hexagon. 12 with an allen key at one end and a support lug 13 with internal grooves 14 at the other. The end of the protrusion 13 interacts with the profile part of the overlap 1.

On the cone 2 wearing the yoke 15 with internal grooves 16, in which are placed the dies 7 with notched notches 17, interacting with the inner surface of the cylindrical end of the blocker 1.

The lower anchor knot has a similar construction, but unlike the upper knot it is equipped with a catching head 18 with rings 19 for engaging with the internal grooves 14 of the gripping head 10. The rings 19 are placed in the annular grooves 20 on the outer surface of the support lug 21.

The inner walls of the stopper 1, the cones 2 with the seal 8 and the end of the mandrel 22 attached to the end of the cone 2

lower anchor knot, form a hydraulic chamber 23. '

The fixing of the anchor nodes in the ceiling 1 is performed in the following sequence. When assembled, they are placed in the cylindrical ends of the overlap 1 and the cone 2 is tightened, in which the dies 7 are wedged and the notched notches 17 cut into the walls. Further, using a socket wrench (not shown), rotating the hexagons 12 of the gripping and fishing heads 10 and 18 achieve close contact of the protrusions 13 and 21 with the wall of the overlap and fixing the anchor nodes.

The device works as follows.

It is lowered into the well on the string of drill pipes. Upon reaching the installation interval, the flushing fluid is pumped into the pipes and the pressure in the hydraulic chamber 23 rises, under the influence of which the walls of the corrugated shut-off valve 1 are straightened, tightly adhering to the wall of the casing (Fig. 4). When this support protrusions 13 and 21 are released. The drill string is fed down. When this cone 2 moves relative to the cage 15 with dies 7, which under the action of springs on the shank fold and their notches 17 out of engagement with the cylindrical part of the stopper 1, and the hooks 6 are included in the groove 5. Thus, the fixing of the cage 15 with dies 7 relative to cone 2.

Upon further lowering of the upper anchor unit, the gripping head 10 comes into contact with the catching head 18, the spring rings 19 engage with the internal grooves 14, thereby connecting the upper and lower anchor nodes. When lifting the drill string, the lower anchor assembly is released (similar to the upper anchor assembly) and the mandrel 22 is pulled through the overlap 1 in order to eliminate the deadlock (Fig. 4, 5), after which the device is removed to the surface.

This device, compared to the * known, is more reliable in operation and does not require additional equipment for flaring out the sections of the shutter. In addition, it has a simpler design due to the implementation of the end sections of the blocker with cylindrical parts5 976020 6

Kami and simplified ppashennyh sites. The use of the device will make it possible to significantly increase the productivity of work teams for the overhaul of wells engaged in restoring casing stresses.

Claims (2)

  1. (54) DEVICE FOR REPAIRING CASING COLUMNS IN THE WELL, The invention relates to a drilling technique, in particular, to devices for installing fracturers in a well, in order to restore casing tightness. A device for repairing casing strings is known, which comprises a hollow rod, an abutment, a tapered punch, a separator, a hydraulic pusher, a check valve, a valve and a mandrel forming arched in the form of moving sectors placed on an elastic cylindrical diaphragm C 1. The disadvantage of this device is that it does not allow the installation of lengthy overlaps, since the simultaneous build-up of a hollow rod and a profile overlap causes great difficulties. In addition, during mechanical retrofitting of multibeam pipes, large axial forces arise on the plaster, which cause it to shift from the place of installation. The closest to the proposed technical essence and the achieved result is a 5-well device for repairing casing strings in a well, including a profile discoverer, at the ends of which upper and lower cores are installed in the form of cones with seals and fixing dies that form a hydraulic chamber with the interrupter. and a fishing head, one of which is connected to the cone of the upper crustal knot, and the other to the cone of the lower crustal weel 2 3. The disadvantage of this device is low reliability. This is explained by the fact that each conical fixing plate has two frayed surfaces with adjacent plates and a rubbing surface with a cone, which, under the conditions of the well, in which insulating works were previously performed with tamper materials, can lead to their jamming due to an increase in friction. The aim of the invention is to improve the reliability of the device. The goal is achieved in that the gripping and fishing heads have supporting protrusions for interacting with the profile part of the overlap. Fig, 1 shows a device with an interrupter, lowered into the well, a general view; FIG. 2 shows the moment when the upper (|) ilia pipe is cornered after its internal pressure is pressed and the upper root node engages with the dorning head; FIG. 3 is a section A-A in FIG. li in fig. 4 section bb in fig. 2; FIG. 5 is a section along the line B-B in FIG. 2, The device contains a profile interrupter 1 (Fig. 1), on the cylindrical ends of which the upper and lower crustal nodes are mounted. The upper root assembly contains a cone 2, at one end of which, being a cylindrical bushing, an external thread 3 is inserted for connecting the coupling 4, as well as a groove 5 for engagement with the hook b of the spring-loaded shank of the fixing plate 7. At the other end of the cone 2, provided with a gasket 8, an internal thread 9 is made to connect the gripping head 1O in the form of a cylindrical sleeve with an external mating thread 11 and an internal hex. 12 with an allen key at one end and a support lug 13 with internal grooves 14 at the other. The end of the protrusion 13 interacts with the profile part of the hinge 1. On the cone 2, the sleeve 15 is worn with the inner grooves 16, in which the dies 7 are placed with notched notches 17 that interact with the inner surface of the cylindrical end of the clapper 1. but only in contrast to the upper assembly it is equipped with a catching head 18 with rings 19 for engagement with the internal grooves 14 of the gripping head 10, the Rings 19 are placed in the annular grooves 20 on the outer surface of the support lug 21. The bottom walls of the overflower 1, the cones 2 with the sealant 8 and the end of the port 22, attached to the end of the cone 2 of the lower crustal unit, form a hydraulic chamber 23. The fixing of the core units in the interrupter 1 is carried out in the following sequence. 1 and tightening the cone 2, in which the dies 7 are wedged and the notches 17 are slammed into the walls. Further, using a socket wrench (not shown), rotating the hexagons 12 of the gripping and catching heads 1O and 18 ensure close contact of the protrusions 13 and 21 with the wall of the horn and fixing the core nodes. The device works as follows. It is lowered into the well on the string of drill pipes. When the installation interval is reached, the flushing fluid is pumped into the pipes and the pressure in the hydraulic chamber 23 rises, under the influence of which the walls of the corrugated cover 1 are leveled tightly against the wall of the casing (Fig. 4). In this case, the protrusions 13 to 21. are released. The drill string is fed down. In this case, the cone 2 is mixed with respect to the cage 15 with the dies 7, which are folded under the action of the springs on the shanks and their notches 17 break out of engagement with the cylindrical part of the overlap 1, and the hooks 6 enter into the groove 5. with dies 7 relative to cone 2. With a further lowering of the upper core assembly, the gripping head 10 comes into contact with the catching head 18, the spring rings 19 engage with the internal grooves 14, thereby connecting the upper and lower Root knots. When the drill string is lifted, the lower core assembly is released (similar to the upper core assembly) and the mandrel 22 is pulled through the overlap 1 in order to eliminate incoherent (Fig. 4, 5), after which the device is removed to the surface. In comparison with the known device, this device is more reliable in operation and does not require additional equipment for flapping sections of long-term overlap. In addition, it has a simpler design due to the implementation of the end sections of the overlayers with cylindrical sections in order to simplify the planar nodes. The use of the unit will significantly increase the productivity of teams for the overhaul of wells engaged in the restoration of casing tightness of Eolon. Formula invented in a casing repair device; in a well, including a profile n & rekryvagel, on. the ends of which are installed the upper and lower crustal nodes in the water cones with seals and fixed dies, which form a hydraulic chamber with the interrupter, a gripping and catching head, one of which is connected to the cone of the upper crustal node, and the other - with a cone of the lower crustal core by the fact that, in order to improve the reliability of its work, it is capturing and catching the head; have supporting protrusions for veaEmodey | STVI with the profile part of the block body. Sources of information taken into account during the examination 1. USSR author's certificate NS 388650, cl. E 21 B 43 / 1O, 197O.
  2. 2.ABTOJpcKoe certificate of SSHZR No. 6O795O, cl. E 21 V 25/00, 1976 (prototype).
    .one
    FIG.
SU813295925A 1981-05-27 1981-05-27 Apparatus for repairing casings within a well SU976020A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
SU813295925A SU976020A1 (en) 1981-05-27 1981-05-27 Apparatus for repairing casings within a well

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SU813295925A SU976020A1 (en) 1981-05-27 1981-05-27 Apparatus for repairing casings within a well

Publications (1)

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Cited By (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005833A1 (en) * 1988-11-22 1990-05-31 Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti Device for closing off a complication zone in a well
US6050341A (en) * 1996-12-13 2000-04-18 Petroline Wellsystems Limited Downhole running tool
US6470966B2 (en) 1998-12-07 2002-10-29 Robert Lance Cook Apparatus for forming wellbore casing
US6494274B1 (en) 1998-03-05 2002-12-17 Weatherford/Lamb, Inc. Axle, a friction reducing fitting and an axle installation method
US6557640B1 (en) 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US6568471B1 (en) 1999-02-26 2003-05-27 Shell Oil Company Liner hanger
US6575240B1 (en) 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
US6604763B1 (en) 1998-12-07 2003-08-12 Shell Oil Company Expandable connector
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
US6640903B1 (en) 1998-12-07 2003-11-04 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6688409B1 (en) 1999-01-22 2004-02-10 Weatherford/Lamb, Inc. Friction reducing tool and method for its use in a wellbore
US6712154B2 (en) 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US6725919B2 (en) 1998-12-07 2004-04-27 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US6823937B1 (en) 1998-12-07 2004-11-30 Shell Oil Company Wellhead
US7100685B2 (en) * 2000-10-02 2006-09-05 Enventure Global Technology Mono-diameter wellbore casing
US7665532B2 (en) 1998-12-07 2010-02-23 Shell Oil Company Pipeline
US7712522B2 (en) 2003-09-05 2010-05-11 Enventure Global Technology, Llc Expansion cone and system
US7739917B2 (en) 2002-09-20 2010-06-22 Enventure Global Technology, Llc Pipe formability evaluation for expandable tubulars
US7740076B2 (en) 2002-04-12 2010-06-22 Enventure Global Technology, L.L.C. Protective sleeve for threaded connections for expandable liner hanger
US7775290B2 (en) 2003-04-17 2010-08-17 Enventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US7793721B2 (en) 2003-03-11 2010-09-14 Eventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US7819185B2 (en) 2004-08-13 2010-10-26 Enventure Global Technology, Llc Expandable tubular
US7886831B2 (en) 2003-01-22 2011-02-15 Enventure Global Technology, L.L.C. Apparatus for radially expanding and plastically deforming a tubular member
US7918284B2 (en) 2002-04-15 2011-04-05 Enventure Global Technology, L.L.C. Protective sleeve for threaded connections for expandable liner hanger

Cited By (34)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1990005833A1 (en) * 1988-11-22 1990-05-31 Tatarsky Gosudarstvenny Nauchno-Issledovatelsky I Proektny Institut Neftyanoi Promyshlennosti Device for closing off a complication zone in a well
US5083608A (en) * 1988-11-22 1992-01-28 Abdrakhmanov Gabdrashit S Arrangement for patching off troublesome zones in a well
US6050341A (en) * 1996-12-13 2000-04-18 Petroline Wellsystems Limited Downhole running tool
US6494274B1 (en) 1998-03-05 2002-12-17 Weatherford/Lamb, Inc. Axle, a friction reducing fitting and an axle installation method
US6634431B2 (en) 1998-11-16 2003-10-21 Robert Lance Cook Isolation of subterranean zones
US6745845B2 (en) 1998-11-16 2004-06-08 Shell Oil Company Isolation of subterranean zones
US6712154B2 (en) 1998-11-16 2004-03-30 Enventure Global Technology Isolation of subterranean zones
US6758278B2 (en) 1998-12-07 2004-07-06 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6557640B1 (en) 1998-12-07 2003-05-06 Shell Oil Company Lubrication and self-cleaning system for expansion mandrel
US6604763B1 (en) 1998-12-07 2003-08-12 Shell Oil Company Expandable connector
US6497289B1 (en) 1998-12-07 2002-12-24 Robert Lance Cook Method of creating a casing in a borehole
US6739392B2 (en) 1998-12-07 2004-05-25 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6631760B2 (en) 1998-12-07 2003-10-14 Shell Oil Company Tie back liner for a well system
US6470966B2 (en) 1998-12-07 2002-10-29 Robert Lance Cook Apparatus for forming wellbore casing
US6640903B1 (en) 1998-12-07 2003-11-04 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6725919B2 (en) 1998-12-07 2004-04-27 Shell Oil Company Forming a wellbore casing while simultaneously drilling a wellbore
US6575240B1 (en) 1998-12-07 2003-06-10 Shell Oil Company System and method for driving pipe
US7665532B2 (en) 1998-12-07 2010-02-23 Shell Oil Company Pipeline
US6823937B1 (en) 1998-12-07 2004-11-30 Shell Oil Company Wellhead
US6688409B1 (en) 1999-01-22 2004-02-10 Weatherford/Lamb, Inc. Friction reducing tool and method for its use in a wellbore
US6684947B2 (en) 1999-02-26 2004-02-03 Shell Oil Company Apparatus for radially expanding a tubular member
US6631769B2 (en) 1999-02-26 2003-10-14 Shell Oil Company Method of operating an apparatus for radially expanding a tubular member
US6631759B2 (en) 1999-02-26 2003-10-14 Shell Oil Company Apparatus for radially expanding a tubular member
US6568471B1 (en) 1999-02-26 2003-05-27 Shell Oil Company Liner hanger
US6705395B2 (en) 1999-02-26 2004-03-16 Shell Oil Company Wellbore casing
US7100685B2 (en) * 2000-10-02 2006-09-05 Enventure Global Technology Mono-diameter wellbore casing
US7740076B2 (en) 2002-04-12 2010-06-22 Enventure Global Technology, L.L.C. Protective sleeve for threaded connections for expandable liner hanger
US7918284B2 (en) 2002-04-15 2011-04-05 Enventure Global Technology, L.L.C. Protective sleeve for threaded connections for expandable liner hanger
US7739917B2 (en) 2002-09-20 2010-06-22 Enventure Global Technology, Llc Pipe formability evaluation for expandable tubulars
US7886831B2 (en) 2003-01-22 2011-02-15 Enventure Global Technology, L.L.C. Apparatus for radially expanding and plastically deforming a tubular member
US7793721B2 (en) 2003-03-11 2010-09-14 Eventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US7775290B2 (en) 2003-04-17 2010-08-17 Enventure Global Technology, Llc Apparatus for radially expanding and plastically deforming a tubular member
US7712522B2 (en) 2003-09-05 2010-05-11 Enventure Global Technology, Llc Expansion cone and system
US7819185B2 (en) 2004-08-13 2010-10-26 Enventure Global Technology, Llc Expandable tubular

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