CN112709546A - Pipeline crossing type efficient suspension releasing packer and method - Google Patents

Abstract

The invention discloses a pipeline crossing type efficient suspension releasing packer and a method, comprising the following steps: the setting mechanism, the hanging mechanism and the releasing mechanism are connected with the upper end of the central pipe through the fishing head, and the upper end of the setting mechanism is propped against the lower end face of the fishing head; the releasing mechanism comprises a releasing pawl and a releasing support sleeve, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is connected with the inner wall of the fishing head in a reverse screw thread manner, the inner wall of the releasing support sleeve is connected with the outer wall of the sealing pipe in a screw thread manner, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated; the releasing support sleeve is made of soluble magnesium-aluminum alloy material. The magnesium-aluminum alloy material and the conventional metal material are matched, so that the pipeline passing-through and automatic releasing of the operation pipe column can be realized, the construction risk is low, and the construction steps are simple.

Description

Pipeline crossing type efficient suspension releasing packer and method

Technical Field

The invention relates to the technical field of oil exploitation underground water injection tools, in particular to a pipeline crossing type efficient suspension releasing packer and a method.

Background

At present, the suspension releasing packer mainly comprises a throwing ball type releasing packer and a non-throwing ball type releasing packer, and is influenced by throwing balls, the former is suitable for a development well with smaller well deviation, and the latter can not be influenced by well deviation and is widely applied to production. With the need of passing through pipelines in the suspended releasing packer for partial development wells, the development of novel process technology is realized, such as hydraulic control layered packers, electric control water distributors and the like, and the structure of the two types of packers limits the technical development. Therefore, a pipeline crossing type high-efficiency sand control hanging releasing packer must be developed.

Through the retrieval, discovery application No. 2018111751591 invented a marine oil field layering sand control layering water injection integration tubular column, and the core instrument of this tubular column passes through type Y445 release packer for the hydraulic control pipeline, and this tubular column needs corotation oil pipe just can realize passing through type Y445 release packer top connection and lower extreme tubular column and break away from when later stage overhauls, mainly has the problem in two aspects: firstly, an annular safety packer is generally arranged for offshore water injection, and once a packer rubber sleeve is set, the packer can be unset only by lifting a pipe column, so that the difficulty of forward rotation of the pipe column is high; secondly, the hydraulic control pipeline is arranged in the pipe column, the difficulty of the forward rotation pipe column is increased again, and therefore the pipe column and the hanging releasing packer cannot meet the requirement of novel process development.

Through retrieval, a non-patent document, namely technical research on a marine oilfield long-acting layered sand control and layered water injection process, disclosed in ' Neijiang science and technology ' of Neijiang ' in 2.2017, is found, the process comprises the steps of connecting a sand control pipe column according to an operation construction design, hanging the sand control pipe column on a wellhead when a hanging packer is connected, well matching a matched setting inner pipe according to a design requirement, inserting the inner pipe and the outer pipe into an inner cavity of the sand control pipe column, and finally connecting the inner pipe and the outer pipe by using the hanging releasing; setting the tubing anchor, lifting and lowering the tubing string to pressurize for 8-10 t, and completing setting of the tubing anchor; setting the packer, pressing at different periods to finish setting of the Y445 releasing packer and the Y341 layering packer, and opening the constant pressure sliding sleeve; throwing a steel ball with the diameter of 45mm, and positively pressurizing until the pressure drops suddenly after the steel ball reaches the ball seat position of the releasing packer to finish releasing the releasing packer; if the pressure is difficult to release, the releasing is completed after the pipe column rotates forwards for more than 20 circles, and the setting pipe column is lifted out; and then the water injection pipe column is put in again. The process has the defects that the construction process is complicated, the ball throwing operation is needed, the large well deviation is not suitable, and meanwhile, the suspension releasing packer cannot realize the penetration of a pipeline, so that the technical expansion of the matching of steel pipes is influenced.

Application No.: 201611214767.X, filing date: 2016-12-26 provides a chemical unsetting compression type packer partial pressure pipe column and an oil well fracturing method. This chemistry deblocking compression packer partial pressure tubular column includes plug, ball seat, differential sandblast sliding sleeve, two at least the same chemistry deblocking compression fracture packers and the bowling sandblast sliding sleeve, the chemistry deblocking compression slips fracture packer and the safety joint who matches with it, and fixed connection in proper order. The chemical deblocking compression type packer pressure-dividing pipe column adopts the connection of the chemical deblocking compression type fracturing packer and the chemical deblocking compression type slip fracturing packer, has the characteristics of simple structure and convenience in installation and construction operation, both the two chemical deblocking packers can be automatically deblocked without deblocking load, and after fracturing is completed, a packer rubber sleeve is dissolved or completely released, so that sand setting at the upper part of the rubber sleeve is reduced, and the safety of taking out the pipe column is greatly improved.

Application No.: 201811124753.8, filing date: 2018-09-26 discloses a staged fracturing method for a 3-inch half sidetrack horizontal well, which comprises the following steps: s1, performing window sidetracking in an original casing, and placing a 3.5-inch oil pipe with a suspended packer, a floating hoop and a floating shoe at a preset position; s2, setting a suspension packer, squeezing cement for cementing wells, putting a cementing plug into collision pressure to complete cementing wells, and pressing for pressure testing; s3, opening a float collar dissolution control switch under pressure, gradually dissolving the float collar, the float shoe and the well cementation rubber plug to form a first section channel, injecting fracturing fluid into the 3.5in oil pipe, and performing fracturing construction on the first section; s4, a cable is put into a bridge-launching linkage tool string or a hydraulic jet fracturing string, a setting tool is started to push a soluble bridge plug to set, and the soluble bridge plug is released after setting is finished; s5, lifting the cable to a second section of perforation position, carrying out perforation operation, and carrying out second section of fracturing construction after perforation; s6, circulating S4 and S5 to finish the fracturing construction of other intervals in sequence; s7, rotating the 3.5in oil pipe, hanging the packer to release, lifting the upper 3.5in oil pipe, and putting the pump down for production. The fracturing method is low in risk, high in efficiency and reliable in packing.

The technical solutions of the above-disclosed technologies, the technical problems to be solved, and the advantageous effects thereof are all different from the present invention, and no technical inspiration exists in the above-disclosed technical documents for more technical features, technical problems to be solved, and advantageous effects thereof.

Disclosure of Invention

The invention aims to provide a pipeline crossing type efficient hanging releasing packer and a method.

In order to achieve the purpose, the invention adopts the following technical scheme that the pipeline crossing type efficient suspension releasing packer comprises:

the setting mechanism is sleeved outside the central tube;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the pipeline crossing device comprises a central pipe, a pipeline crossing channel and a pipeline crossing channel, wherein the central pipe is arranged in the pipeline crossing channel;

the releasing mechanism comprises a releasing pawl and a releasing support sleeve, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is connected with the inner wall of the fishing head in a reverse screw thread manner, the inner wall of the releasing support sleeve is connected with the outer wall of the sealing pipe in a screw thread manner, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

the anti-rotation sleeve is connected to the upper end of the fishing head and fixedly connected with the anti-rotation nail, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the releasing support sleeve is provided with at least one axial dissolving hole.

Furthermore, the connecting thread on the inner wall of the releasing support sleeve is subjected to antiseptic treatment.

Further, the sealing tube comprises an upper sealing nipple, a sealing body and a lower sealing nipple, the lower end of the upper sealing nipple is connected with the upper end of the lower sealing nipple through the sealing body, the outer wall of the sealing body and the inner wall of the central tube are in a sealing state, the upper end of the upper sealing nipple is connected with the lower end of the upper connector, the upper connector is provided with a hydraulic control pipeline channel, and the pawl of the inner wall of the upper end of the releasing pawl is inserted into the key groove of the outer wall of the upper.

Further, the setting mechanism includes:

the packing element, the packing element suit is at the center tube outer wall, and the packing element upper end withstands the lower terminal surface of fishing head, the packing element sets up two at least, sets up the spacer ring between two liang of packing elements, and the indent annular is all seted up to the inner wall of every packing element, and the indent annular that all packing elements were seted up is not of uniform size, and the indent annular of top-down's packing element diminishes step by step promptly.

Further, the setting mechanism includes:

the setting piston is arranged in a piston cavity between the cylinder body and the central pipe, the central pipe and the sealing body are simultaneously provided with corresponding setting pressure transmission holes which are communicated in the radial direction, the sealing body is provided with radial setting pressure transmission holes and also provided with an axial hydraulic control pipeline through hole and a backwashing well channel, and the radial hole channel and the axial channel are not communicated with each other so that the piston cavity is communicated with the inner cavity of the sealing pipe;

the upper end of the lock sleeve props against the lower end of the rubber cylinder, and the lower end of the lock sleeve is connected with the setting piston.

Further, the setting mechanism includes:

the lock ring is arranged on the outer wall of the lock sleeve, and the outer wall of the lock ring is connected with the inner wall of the cylinder body in a button type manner through a horse tooth, so that the lock sleeve can only move upwards in one direction relative to the cylinder body.

Further, the setting mechanism includes:

the compression ring is connected to the outer wall of the upper end of the lock sleeve, the lower end of the compression ring presses the upper end of the lock ring to axially limit the lock ring, and the compression ring is fixedly connected with the lock sleeve through the seat seal shear pin.

Further, the suspension mechanism includes:

the slips are arranged in slip grooves of the slip sleeve;

the conical surface at the lower end of the upper cone props against the upper end of the plate spring, the middle part of the plate spring props against the inner wall of the slip, the upper cone is connected with the upper end of the slip sleeve through an anchoring shear pin, and the upper end of the upper cone extends into the cylinder body;

the upper conical surface of the lower cone props against the lower end of the plate spring, the outer wall of the lower cone is sleeved with a lower cone retaining ring, and the lower end of the slip sleeve is connected with the lower cone retaining ring through a shear pin;

the anchoring piston is arranged in the cylinder body, the safety locking block is fixedly installed on the outer wall of the central pipe, the safety locking block simultaneously limits the anchoring piston and the setting piston in the axial direction, namely, the setting piston is limited to move downwards, the anchoring piston is limited to move upwards, the lower end of the cylinder body is connected with the anchoring piston through shear pins, and the lower end of the anchoring piston is connected with the upper end of the upper cone through shear pins.

Further, the suspension mechanism includes:

the unsealing sleeve is characterized in that the upper end of the unsealing sleeve is connected with the lower end of the lower cone through a shear pin, and the lower end of the unsealing sleeve is connected with a central tube through a unsealing shear pin.

Further, the suspension mechanism includes:

the ring is cut in the deblocking, the ring is cut in the deblocking is installed in the shearing annular that the center tube outer wall was seted up, and the lower terminal surface of cone is withstood to the deblocking shear ring up end.

Furthermore, the inner wall of the slip sleeve and the outer wall of the upper cone body are simultaneously provided with an axial limiting table for preventing axial disengagement, and the slip sleeve is arranged.

Furthermore, an outer clamping table is arranged on the outer wall of the upper end of the lower cone and clamped on the upper end face of the baffle ring of the lower cone.

In order to achieve the purpose, the invention adopts the following technical scheme that the use method of the pipeline crossing type high-efficiency hanging releasing packer comprises the following steps:

pressing from the inside of the oil pipe, when the water injection pressure is reached, shearing a temporary shear pin between a setting piston and an anchoring setting, moving the setting piston, pushing a lock sleeve, shearing a setting shear pin, and sequentially pushing a lower rubber sleeve and an upper rubber sleeve to move to realize the setting of the rubber sleeve of the packer;

meanwhile, the rubber cylinder is locked under the action of the locking ring and the pressing ring;

continuing to increase the pressure, shearing the anchoring shear pin by the anchoring piston, pushing the upper cone to move downwards, and realizing anchoring by the slips under the action of the upper cone and the lower cone, so that the setting and anchoring function of the hanging releasing packer is completed;

in the production operation process, the releasing support sleeve in the suspended releasing packer can be slowly corroded, and when a certain condition is reached, the releasing support sleeve loses support, so that the natural release of the pawl is realized, and the releasing is automatically and smoothly performed;

and during later-stage maintenance operation, a corresponding anchor is put in, the central pipe is lifted upwards, the deblocking shear pin is cut off, and then the deblocking shear ring is cut off after the central pipe is continuously lifted to pass through an idle stroke, so that the whole body of the deblocking sleeve is completely fallen off, and the deblocking of the rubber sleeve and the slips is realized.

Compared with the prior art, the invention has the following beneficial effects:

the tool adopts the magnesium-aluminum alloy material to be matched with the conventional metal material, so that the penetration of a pipeline can be realized, the automatic release of an operation pipe column can be realized, the construction risk is low, and the construction steps are simple;

(1) the tool adopts the magnesium-aluminum alloy material to be matched with the conventional metal material, so that the penetration of a pipeline can be realized, the automatic release of an operation pipe column can be realized, and the construction is simpler;

(2) the rubber cylinders of the hanging releasing packer are designed through different inner grooves, so that the problem that a single rubber cylinder of the packer is set, and after a pipe column creeps, both the two rubber cylinders are not sealed can be solved;

(3) the hanging releasing packer is provided with the deblocking shear ring and the deblocking shear pin to form a step deblocking mechanism, so that the problem of automatic deblocking when a pipe column creeps or pressure changes can be solved, and meanwhile, the hanging releasing packer can be cut off step by step during later fishing, so that the reliability of operation is guaranteed;

(4) the hanging back-off packer is provided with the magnesium-aluminum alloy material, and the dissolution time of the soluble alloy material is controllable, so that the packer is simplified into a plurality of parts from conventional parts, the manufacturing cost is saved, and the operation effect is improved.

Drawings

FIG. 1 is a schematic structural diagram of a pipeline crossing type high-efficiency suspension releasing packer of the invention;

fig. 2 is a schematic structural view of a releasing support sleeve.

In the figure: 101 coupling, 102 upper joint, 103 hydraulic control pipeline, 104 anti-rotation sleeve, 105 anti-rotation nail, 106 releasing pawl, 107 upper sealing short section, 108 releasing support sleeve, 109 fishing head, 110 upper rubber sleeve, 111 spacer ring, 112 lower rubber sleeve, 113 central pipe, 114 locking sleeve, 115 setting shear nail, 116 press ring, 117 locking ring, 118 cylinder, 119 sealing body, 120 setting piston, 121 safety locking block, 122 anchoring piston, 123 lower sealing short section, 124 upper cone, 125 anchoring shear nail, 126 slip sleeve, 127 leaf spring, 128 slip, 129 lower cone, 130 lower cone retaining ring, 131 releasing sleeve, 132 releasing shear ring and 133 releasing shear nail;

108a dissolving hole, 108b pilot line passing through hole, 108c connecting thread.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

Example 1:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

and the anti-rotation sleeve 104 is connected to the upper end of the fishing head and is fixedly connected by an anti-rotation nail 105, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the release support sleeve is provided with at least one axial dissolution hole 108 a.

Furthermore, the connecting thread 108c on the inner wall of the releasing support sleeve is subjected to antiseptic treatment.

Further, the sealing pipe comprises an upper sealing short section 107, a sealing body 119 and a lower sealing short section 123, the lower end of the upper sealing short section is connected with the upper end of the lower sealing short section through the sealing body, the outer wall of the sealing body and the inner wall of the central pipe are in a sealing state, the upper end of the upper sealing short section is connected with the lower end of the upper connector 102, a hydraulic control pipeline channel is formed in the upper connector, and a pawl on the inner wall of the upper end of the releasing pawl is inserted into a key groove in the.

Further, the setting mechanism includes:

the packing element, the packing element suit is at the center tube outer wall, and the packing element upper end withstands the lower terminal surface of fishing head, the packing element sets up two at least, and the packing element sets up spacer ring 111 between two liang, and the indent annular is all seted up to the inner wall of every packing element, and the indent annular that all packing elements were seted up is not of uniform size, and the indent annular of top-down's packing element diminishes step by step promptly. For example, the upper rubber cylinder 110 in fig. 1 has a larger groove width than the lower rubber cylinder 112.

Further, the setting mechanism includes:

the setting piston 120 is arranged in a piston cavity between the cylinder body 118 and the central tube, the central tube and the sealing body are simultaneously provided with corresponding setting pressure transmitting holes which are communicated in the radial direction, the sealing body is provided with the radial setting pressure transmitting holes and also provided with an axial hydraulic control pipeline through hole and a backwashing well channel, and the radial hole channel and the axial channel are not communicated with each other so that the piston cavity is communicated with the inner cavity of the sealing tube;

and a lock sleeve 114, wherein the upper end of the lock sleeve props against the lower end of the rubber barrel, and the lower end of the lock sleeve is connected with the setting piston.

Further, the setting mechanism includes:

and the locking ring 117 is arranged on the outer wall of the lock sleeve, and the outer wall of the locking ring is connected with the inner wall of the cylinder body in a horse-tooth buckle type manner, so that the lock sleeve can only move upwards in one direction relative to the cylinder body.

Further, the setting mechanism includes:

and the pressing ring 116 is connected to the outer wall of the upper end of the lock sleeve, the lower end of the pressing ring presses the upper end of the lock ring to axially limit the lock ring, and the pressing ring is fixedly connected with the lock sleeve through the setting shear pin 115.

Further, the suspension mechanism includes:

slips 128 which fit into the slip grooves of the slip sleeve 126;

the conical surface of the lower end of the upper cone body supports against the upper end of the plate spring, the middle part of the plate spring supports against the inner wall of the slip, the upper cone body is connected with the upper end of the slip sleeve through an anchoring shear pin, and the upper end of the upper cone body extends into the cylinder body;

the conical surface of the upper end of the lower cone supports against the lower end of the plate spring, the outer wall of the lower cone is sleeved with a lower cone retaining ring, and the lower end of the slip sleeve is connected with a lower cone retaining ring 130 through shear pins;

the anchoring piston 122 is arranged in the cylinder body, the safety locking block 121 is fixedly installed on the outer wall of the central pipe, the safety locking block is used for limiting the anchoring piston and the setting piston in the axial direction at the same time, namely limiting the setting piston to move downwards and limiting the anchoring piston to move upwards, the lower end of the cylinder body is connected with the anchoring piston through shear pins, and the lower end of the anchoring piston is connected with the upper end of the upper cone through shear pins.

Further, the suspension mechanism includes:

unsealing sleeve 131, the lower cone lower extreme is connected through the shear pin to unsealing sleeve upper end, and unsealing sleeve lower extreme is connected the center tube through unsealing shear pin 133.

Further, the suspension mechanism includes:

the ring 132 is cut to the deblocking, the ring is cut to the deblocking is installed in the shearing annular that the center tube outer wall was seted up, and the lower terminal surface of cone is withstood to the deblocking shear ring up end.

Furthermore, the inner wall of the slip sleeve and the outer wall of the upper cone body are simultaneously provided with an axial limiting table for preventing axial disengagement, and the slip sleeve is arranged.

Furthermore, an outer clamping table is arranged on the outer wall of the upper end of the lower cone and clamped on the upper end face of the baffle ring of the lower cone.

Referring to fig. 1 to 2, the present invention provides a technical solution: the hanging releasing packer comprises a hydraulic control pipeline, a coupling, an upper joint, a fishing head, a central pipe, an upper sealing short section, a sealing body, a lower sealing short section, a releasing mechanism, a setting mechanism, a hanging mechanism, a releasing mechanism and a traversing mechanism, wherein the coupling, the upper joint, the upper sealing short section, the sealing body and the lower sealing short section form an inner pipe of the hanging releasing packer, the coupling and the upper joint, the upper joint and the upper sealing short section, the upper sealing short section and the sealing body, and the sealing body and the lower sealing short section are connected through threaded screws, the releasing mechanism comprises an anti-rotation sleeve, an anti-rotation nail, a releasing pawl and a releasing support sleeve, the releasing support sleeve is connected with the threaded screws of the sealing short sections, the releasing pawl is inserted into a key groove of the upper joint from top to bottom, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle and is in threaded connection with the outside of the releasing pawl, the anti-rotation sleeve is in threaded connection with the upper joint and is circumferentially fixed with the fishing head through an anti-rotation nail, the central pipe is in threaded connection with the fishing head, the setting mechanism, the suspension mechanism and the deblocking mechanism are sequentially arranged outside the central pipe from top to bottom, the setting mechanism comprises an upper rubber cylinder, a spacer ring, a lower rubber cylinder, a lock sleeve, a pressing ring, a locking ring, a cylinder body, a setting shear pin and a setting piston, the upper rubber cylinder, the spacer ring, the lower rubber cylinder and the lock sleeve are sequentially arranged outside the central pipe from top to bottom, the pressing ring and the lock sleeve are temporarily fixed through the setting shear pin, the pressing ring is in threaded connection with the cylinder body, the locking ring is arranged between the upper rubber cylinder and the lower rubber cylinder, the suspension mechanism is arranged at the lower end of the setting mechanism and mainly comprises an anchoring piston, a safety lock block, an upper cone, a slip sleeve, a plate spring, a slip and a slip, The anchoring piston and the setting piston are temporarily locked by a safety locking block, the lower cone is in threaded connection with the anchoring piston, the slip and the plate spring are arranged in the slip sleeve, the slip sleeve and the upper cone are temporarily fixed through the anchoring shear pin, the lower cone is arranged at the lower end of the slip, and is in threaded connection with the lower cone retaining ring, the unsealing mechanism is arranged at the lower end of the anchoring mechanism, which mainly comprises a decapsulation shear ring, a decapsulation shear pin and an decapsulation sleeve, wherein the decapsulation shear ring is arranged inside the decapsulation sleeve, and is arranged at the groove of the central tube, the unpacking sleeve is in threaded connection with the lower cone, the unpacking sleeve and the central tube are temporarily fixed through an unpacking shear pin, the inside step that sets up of deblocking cover, be convenient for cut the deblocking and cut the ring, the hydraulic control pipeline successively wear out through top connection, releasing support cover, seal and center tube and upper and lower seal annular space.

The releasing pawl is connected with the fishing head in a reverse buckling manner, so that the back-off releasing under special conditions is facilitated;

the upper joint and the releasing support sleeve are both provided with a through channel;

a backwashing well channel is arranged outside the anti-rotation sleeve;

the upper rubber cylinder of the hanging releasing packer is provided with a larger internal groove, and the lower rubber cylinder of the packer is provided with a smaller internal groove;

it is particularly noted that the releasing support sleeve is made of magnesium-aluminum alloy, the specific components of the releasing support sleeve are not taken as the protection points of the invention, detailed description is not provided, and through an indoor multi-group test, the adopted material starts to dissolve for more than 3d, has the tensile strength of more than 320MPa, and can completely meet the construction safety and field requirements in the running-in process;

the releasing support sleeve is provided with a plurality of upper and lower axial dissolving holes, so that the contact area with injected water is increased, and the releasing support sleeve is ensured to be dissolved thoroughly;

the releasing support sleeve is provided with a hydraulic control pipeline passing hole, so that the hydraulic control pipeline can pass through conveniently;

the inner part of the releasing support sleeve is connected with threads, and special anti-corrosion treatment is carried out, so that the corrosion rate is delayed, the advanced dissolution in the operation process is prevented, and the operation accidents are reduced;

the sealing body is provided with a radial setting and pressing hole, an axial pipeline penetrating hole and a back-flushing channel, the radial channel and the axial channel are not communicated with each other, and rubber rings are respectively arranged at the upper part and the lower part of the outside of the sealing body to keep sealing;

the principle of the tool is that when the pressure is pressed from the inside of an oil pipe and a certain water injection pressure is reached, a temporary shear pin between a setting piston and an anchoring setting is cut off, the setting piston moves to push a lock sleeve and cut the setting shear pin, a lower rubber cylinder and an upper rubber cylinder are successively pushed to move to realize the setting of the rubber cylinder of the packer, and meanwhile, under the action of a lock ring and a pressure ring, the locking of the rubber cylinder is realized, the pressure is continuously improved, the anchoring piston cuts the anchoring shear pin and pushes an upper cone to move downwards, and a slip is under the action of the upper cone and the lower cone to realize anchoring, so that the setting and anchoring functions of the suspended releasing packer are completed; in the production operation process, the releasing support sleeve in the suspended releasing packer can be slowly corroded, and when a certain condition is reached, the releasing support sleeve loses support, so that the natural release of the pawl is realized, and the releasing is automatically and smoothly performed; and during later-stage maintenance operation, a corresponding anchor is put in, the central pipe is lifted upwards, the deblocking shear pin is cut off, and then the deblocking shear ring is cut off after the central pipe is continuously lifted to pass through an idle stroke, so that the whole body of the deblocking sleeve is completely fallen off, and the deblocking of the rubber sleeve and the slips is realized.

When reverse circulation well flushing is needed, the hydraulic control layering packer is decompressed from the ground, the hydraulic control layering packer is unsealed, the annular safety packer well flushing sliding sleeve is opened through the ground control cabinet, the requirement of large-discharge reverse well flushing is met, and a shaft can be safely cleaned.

Example 2:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

and the anti-rotation sleeve 104 is connected to the upper end of the fishing head and is fixedly connected by an anti-rotation nail 105, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the release support sleeve is provided with at least one axial dissolution hole 108 a.

Furthermore, the connecting thread 108c on the inner wall of the releasing support sleeve is subjected to antiseptic treatment.

Further, the sealing pipe comprises an upper sealing short section 107, a sealing body 119 and a lower sealing short section 123, the lower end of the upper sealing short section is connected with the upper end of the lower sealing short section through the sealing body, the outer wall of the sealing body and the inner wall of the central pipe are in a sealing state, the upper end of the upper sealing short section is connected with the lower end of the upper connector 102, a hydraulic control pipeline channel is formed in the upper connector, and a pawl on the inner wall of the upper end of the releasing pawl is inserted into a key groove in the.

Further, the setting mechanism includes:

the packing element, the packing element suit is at the center tube outer wall, and the packing element upper end withstands the lower terminal surface of fishing head, the packing element sets up two at least, and the packing element sets up spacer ring 111 between two liang, and the indent annular is all seted up to the inner wall of every packing element, and the indent annular that all packing elements were seted up is not of uniform size, and the indent annular of top-down's packing element diminishes step by step promptly. For example, the upper rubber cylinder 110 in fig. 1 has a larger groove width than the lower rubber cylinder 112.

Further, the setting mechanism includes:

the setting piston 120 is arranged in a piston cavity between the cylinder body 118 and the central tube, the central tube and the sealing body are simultaneously provided with corresponding setting pressure transmitting holes which are communicated in the radial direction, the sealing body is provided with the radial setting pressure transmitting holes and also provided with an axial hydraulic control pipeline through hole and a backwashing well channel, and the radial hole channel and the axial channel are not communicated with each other so that the piston cavity is communicated with the inner cavity of the sealing tube;

and a lock sleeve 114, wherein the upper end of the lock sleeve props against the lower end of the rubber barrel, and the lower end of the lock sleeve is connected with the setting piston.

Further, the setting mechanism includes:

and the locking ring 117 is arranged on the outer wall of the lock sleeve, and the outer wall of the locking ring is connected with the inner wall of the cylinder body in a horse-tooth buckle type manner, so that the lock sleeve can only move upwards in one direction relative to the cylinder body.

Further, the setting mechanism includes:

and the pressing ring 116 is connected to the outer wall of the upper end of the lock sleeve, the lower end of the pressing ring presses the upper end of the lock ring to axially limit the lock ring, and the pressing ring is fixedly connected with the lock sleeve through the setting shear pin 115.

Further, the suspension mechanism includes:

slips 128 which fit into the slip grooves of the slip sleeve 126;

the conical surface of the lower end of the upper cone body supports against the upper end of the plate spring, the middle part of the plate spring supports against the inner wall of the slip, the upper cone body is connected with the upper end of the slip sleeve through an anchoring shear pin, and the upper end of the upper cone body extends into the cylinder body;

the conical surface of the upper end of the lower cone supports against the lower end of the plate spring, the outer wall of the lower cone is sleeved with a lower cone retaining ring, and the lower end of the slip sleeve is connected with a lower cone retaining ring 130 through shear pins;

the anchoring piston 122 is arranged in the cylinder body, the safety locking block 121 is fixedly installed on the outer wall of the central pipe, the safety locking block is used for limiting the anchoring piston and the setting piston in the axial direction at the same time, namely limiting the setting piston to move downwards and limiting the anchoring piston to move upwards, the lower end of the cylinder body is connected with the anchoring piston through shear pins, and the lower end of the anchoring piston is connected with the upper end of the upper cone through shear pins.

Example 3:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

and the anti-rotation sleeve 104 is connected to the upper end of the fishing head and is fixedly connected by an anti-rotation nail 105, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the release support sleeve is provided with at least one axial dissolution hole 108 a.

Furthermore, the connecting thread 108c on the inner wall of the releasing support sleeve is subjected to antiseptic treatment.

Further, the sealing pipe comprises an upper sealing short section 107, a sealing body 119 and a lower sealing short section 123, the lower end of the upper sealing short section is connected with the upper end of the lower sealing short section through the sealing body, the outer wall of the sealing body and the inner wall of the central pipe are in a sealing state, the upper end of the upper sealing short section is connected with the lower end of the upper connector 102, a hydraulic control pipeline channel is formed in the upper connector, and a pawl on the inner wall of the upper end of the releasing pawl is inserted into a key groove in the.

Further, the setting mechanism includes:

the packing element, the packing element suit is at the center tube outer wall, and the packing element upper end withstands the lower terminal surface of fishing head, the packing element sets up two at least, and the packing element sets up spacer ring 111 between two liang, and the indent annular is all seted up to the inner wall of every packing element, and the indent annular that all packing elements were seted up is not of uniform size, and the indent annular of top-down's packing element diminishes step by step promptly. For example, the upper rubber cylinder 110 in fig. 1 has a larger groove width than the lower rubber cylinder 112.

Further, the setting mechanism includes:

the setting piston 120 is arranged in a piston cavity between the cylinder body 118 and the central tube, the central tube and the sealing body are simultaneously provided with corresponding setting pressure transmitting holes which are communicated in the radial direction, the sealing body is provided with the radial setting pressure transmitting holes and also provided with an axial hydraulic control pipeline through hole and a backwashing well channel, and the radial hole channel and the axial channel are not communicated with each other so that the piston cavity is communicated with the inner cavity of the sealing tube;

and a lock sleeve 114, wherein the upper end of the lock sleeve props against the lower end of the rubber barrel, and the lower end of the lock sleeve is connected with the setting piston.

Further, the setting mechanism includes:

and the locking ring 117 is arranged on the outer wall of the lock sleeve, and the outer wall of the locking ring is connected with the inner wall of the cylinder body in a horse-tooth buckle type manner, so that the lock sleeve can only move upwards in one direction relative to the cylinder body.

Further, the setting mechanism includes:

and the pressing ring 116 is connected to the outer wall of the upper end of the lock sleeve, the lower end of the pressing ring presses the upper end of the lock ring to axially limit the lock ring, and the pressing ring is fixedly connected with the lock sleeve through the setting shear pin 115.

Example 4:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

and the anti-rotation sleeve 104 is connected to the upper end of the fishing head and is fixedly connected by an anti-rotation nail 105, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the release support sleeve is provided with at least one axial dissolution hole 108 a.

Furthermore, the connecting thread 108c on the inner wall of the releasing support sleeve is subjected to antiseptic treatment.

Further, the sealing pipe comprises an upper sealing short section 107, a sealing body 119 and a lower sealing short section 123, the lower end of the upper sealing short section is connected with the upper end of the lower sealing short section through the sealing body, the outer wall of the sealing body and the inner wall of the central pipe are in a sealing state, the upper end of the upper sealing short section is connected with the lower end of the upper connector 102, a hydraulic control pipeline channel is formed in the upper connector, and a pawl on the inner wall of the upper end of the releasing pawl is inserted into a key groove in the.

Further, the setting mechanism includes:

the packing element, the packing element suit is at the center tube outer wall, and the packing element upper end withstands the lower terminal surface of fishing head, the packing element sets up two at least, and the packing element sets up spacer ring 111 between two liang, and the indent annular is all seted up to the inner wall of every packing element, and the indent annular that all packing elements were seted up is not of uniform size, and the indent annular of top-down's packing element diminishes step by step promptly. For example, the upper rubber cylinder 110 in fig. 1 has a larger groove width than the lower rubber cylinder 112.

Example 5:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

and the anti-rotation sleeve 104 is connected to the upper end of the fishing head and is fixedly connected by an anti-rotation nail 105, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the release support sleeve is provided with at least one axial dissolution hole 108 a.

Furthermore, the connecting thread 108c on the inner wall of the releasing support sleeve is subjected to antiseptic treatment.

Further, the sealing pipe comprises an upper sealing short section 107, a sealing body 119 and a lower sealing short section 123, the lower end of the upper sealing short section is connected with the upper end of the lower sealing short section through the sealing body, the outer wall of the sealing body and the inner wall of the central pipe are in a sealing state, the upper end of the upper sealing short section is connected with the lower end of the upper connector 102, a hydraulic control pipeline channel is formed in the upper connector, and a pawl on the inner wall of the upper end of the releasing pawl is inserted into a key groove in the.

Example 6:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

and the anti-rotation sleeve 104 is connected to the upper end of the fishing head and is fixedly connected by an anti-rotation nail 105, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the release support sleeve is provided with at least one axial dissolution hole 108 a.

Furthermore, the connecting thread 108c on the inner wall of the releasing support sleeve is subjected to antiseptic treatment.

Example 7:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Further, the releasing mechanism further comprises:

and the anti-rotation sleeve 104 is connected to the upper end of the fishing head and is fixedly connected by an anti-rotation nail 105, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

Further, the release support sleeve is provided with at least one axial dissolution hole 108 a.

Example 8:

referring to fig. 1 to 2, the present invention provides a technical solution: a line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube 113;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head 109, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the hydraulic control pipeline crossing device comprises a central pipe, a hydraulic control pipeline crossing channel and a hydraulic control pipeline crossing channel, wherein the central pipe is arranged in the hydraulic control pipeline crossing channel;

the releasing mechanism comprises a releasing pawl 106 and a releasing support sleeve 108, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is in reverse thread connection with the inner wall of the fishing head, the inner wall of the releasing support sleeve is in thread connection with the outer wall of the sealing pipe, namely, the inner wall of the releasing support sleeve is provided with a connecting thread 108c, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve 108 is made of soluble magnesium-aluminum alloy material.

Although fig. 1 to 2 are used in all the above embodiments, it is obvious to those skilled in the art that separate drawings are not shown as long as the parts or structural features missing in the embodiments are removed from the drawings. As will be clear to the skilled person. Of course, the embodiments with more components are only the best embodiments, and the embodiments with less components are the basic embodiments, but the basic objects of the invention can also be achieved, so all of them are within the protection scope of the invention.

All parts and parts which are not discussed in the present application and the connection mode of all parts and parts in the present application belong to the known technologies in the technical field, and are not described again. Such as welding, threading, bolting, etc. The specific connection details of all components will be clear to those skilled in the art.

In the present invention, the term "plurality" means two or more unless explicitly defined otherwise. The terms "mounted," "connected," "fixed," and the like are to be construed broadly, and for example, "connected" may be a fixed connection, a removable connection, or an integral connection; "coupled" may be direct or indirect through an intermediary. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "left", "right", "front", "rear", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the referred device or unit must have a specific direction, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.

In the description herein, the description of the terms "one embodiment," "some embodiments," "specific embodiments," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (15)

1. A line-crossing type high efficiency hanging release packer comprising:

the setting mechanism is sleeved outside the central tube;

the suspension mechanism is sleeved outside the central tube, and the upper end of the suspension mechanism is connected with the lower end of the setting mechanism;

the releasing mechanism is connected with the upper end of the central pipe through the fishing head, and the upper end of the setting mechanism is propped against the lower end face of the fishing head;

the pipeline crossing device is characterized by further comprising a sealing pipe, wherein the sealing pipe is arranged inside the central pipe, and a pipeline crossing channel is formed between the outer wall of the sealing pipe and the inner wall of the central pipe;

the releasing mechanism comprises a releasing pawl and a releasing support sleeve, the releasing pawl and the releasing support sleeve are both arranged in a space between the fishing head and the sealing pipe, the outer wall of the releasing pawl is connected with the inner wall of the fishing head in a reverse screw thread manner, the inner wall of the releasing support sleeve is connected with the outer wall of the sealing pipe in a screw thread manner, the fishing head and the releasing support sleeve clamp the releasing pawl in the middle, and the releasing support sleeve is provided with a hydraulic control pipeline through hole which is axially communicated;

the releasing support sleeve is made of soluble magnesium-aluminum alloy material.

2. The line-crossing efficient suspension releasing packer according to claim 1, wherein the releasing mechanism further comprises:

the anti-rotation sleeve is connected to the upper end of the fishing head and fixedly connected with the anti-rotation nail, and the anti-rotation sleeve is provided with a radial through backwashing well hole.

3. The high-efficiency hanging releasing packer of a pipeline crossing type as claimed in claim 1 or 2, wherein the releasing support sleeve is provided with at least one axial dissolution hole.

4. The line-crossing efficient hanging releasing packer as claimed in claim 3, wherein the connecting thread on the inner wall of the releasing support sleeve is treated with corrosion prevention.

5. The pipeline-crossing efficient hanging releasing packer as claimed in claim 1 or 2, wherein the sealing pipe comprises an upper sealing nipple, a sealing body and a lower sealing nipple, the lower end of the upper sealing nipple is connected with the upper end of the lower sealing nipple through the sealing body, the outer wall of the sealing body and the inner wall of the central pipe are in a sealing state, the upper end of the upper sealing nipple is connected with the lower end of an upper joint, a hydraulic control pipeline channel is formed in the upper joint, and a pawl on the inner wall of the upper end of the releasing pawl is inserted into a key groove on the outer wall of the upper joint.

6. The line-crossing efficient hanging release packer as claimed in claim 5, wherein the setting mechanism comprises:

the packing element, the packing element suit is at the center tube outer wall, and the packing element upper end withstands the lower terminal surface of fishing head, the packing element sets up two at least, sets up the spacer ring between two liang of packing elements, and the indent annular is all seted up to the inner wall of every packing element, and the indent annular that all packing elements were seted up is not of uniform size, and the indent annular of top-down's packing element diminishes step by step promptly.

7. The line-crossing efficient hanging release packer as claimed in claim 6, wherein the setting mechanism comprises:

the setting piston is arranged in a piston cavity between the cylinder body and the central pipe, the central pipe and the sealing body are simultaneously provided with corresponding setting pressure transmission holes which are communicated in the radial direction, the sealing body is provided with radial setting pressure transmission holes and also provided with an axial hydraulic control pipeline through hole and a backwashing well channel, and the radial hole channel and the axial channel are not communicated with each other so that the piston cavity is communicated with the inner cavity of the sealing pipe;

the upper end of the lock sleeve props against the lower end of the rubber cylinder, and the lower end of the lock sleeve is connected with the setting piston.

8. The line-crossing efficient hanging release packer as claimed in claim 7, wherein the setting mechanism comprises:

the lock ring is arranged on the outer wall of the lock sleeve, and the outer wall of the lock ring is connected with the inner wall of the cylinder body in a button type manner through a horse tooth, so that the lock sleeve can only move upwards in one direction relative to the cylinder body.

9. The line-crossing high-efficiency hanging release packer as claimed in claim 8, wherein the setting mechanism comprises:

the compression ring is connected to the outer wall of the upper end of the lock sleeve, the lower end of the compression ring presses the upper end of the lock ring to axially limit the lock ring, and the compression ring is fixedly connected with the lock sleeve through the seat seal shear pin.

10. A line-through high efficiency hanging release packer as claimed in claim 7, 8 or 9, wherein the hanging mechanism comprises:

the slips are arranged in slip grooves of the slip sleeve;

the conical surface at the lower end of the upper cone props against the upper end of the plate spring, the middle part of the plate spring props against the inner wall of the slip, the upper cone is connected with the upper end of the slip sleeve through an anchoring shear pin, and the upper end of the upper cone extends into the cylinder body;

the upper conical surface of the lower cone props against the lower end of the plate spring, the outer wall of the lower cone is sleeved with a lower cone retaining ring, and the lower end of the slip sleeve is connected with the lower cone retaining ring through a shear pin;

the anchoring piston is arranged in the cylinder body, the safety locking block is fixedly installed on the outer wall of the central pipe, the safety locking block simultaneously limits the anchoring piston and the setting piston in the axial direction, namely, the setting piston is limited to move downwards, the anchoring piston is limited to move upwards, the lower end of the cylinder body is connected with the anchoring piston through shear pins, and the lower end of the anchoring piston is connected with the upper end of the upper cone through shear pins.

11. The line-crossing efficient suspension release packer of claim 10, wherein the suspension mechanism comprises:

the unsealing sleeve is characterized in that the upper end of the unsealing sleeve is connected with the lower end of the lower cone through a shear pin, and the lower end of the unsealing sleeve is connected with a central tube through a unsealing shear pin.

12. The line-crossing efficient suspension release packer of claim 11, wherein the suspension mechanism comprises:

the ring is cut in the deblocking, the ring is cut in the deblocking is installed in the shearing annular that the center tube outer wall was seted up, and the lower terminal surface of cone is withstood to the deblocking shear ring up end.

13. The line-crossing efficient hanging releasing packer as claimed in claim 12, wherein the inner wall of the slip sleeve and the outer wall of the upper cone are simultaneously provided with axial limiting platforms for preventing axial disengagement, and the slip sleeve.

14. The high-efficiency string-crossing suspended releasing packer as claimed in claim 12, wherein the outer wall of the upper end of the lower cone is provided with an outer clamping table, and the outer clamping table is clamped on the upper end face of the baffle ring of the lower cone.

15. A use method of a pipeline crossing type efficient hanging releasing packer is characterized by comprising the following steps:

pressing from the inside of the oil pipe, when the water injection pressure is reached, shearing a temporary shear pin between a setting piston and an anchoring setting, moving the setting piston, pushing a lock sleeve, shearing a setting shear pin, and sequentially pushing a lower rubber sleeve and an upper rubber sleeve to move to realize the setting of the rubber sleeve of the packer;

meanwhile, the rubber cylinder is locked under the action of the locking ring and the pressing ring;

continuing to increase the pressure, shearing the anchoring shear pin by the anchoring piston, pushing the upper cone to move downwards, and realizing anchoring by the slips under the action of the upper cone and the lower cone, so that the setting and anchoring function of the hanging releasing packer is completed;

in the production operation process, the releasing support sleeve in the suspended releasing packer can be slowly corroded, and when a certain condition is reached, the releasing support sleeve loses support, so that the natural release of the pawl is realized, and the releasing is automatically and smoothly performed;

and during later-stage maintenance operation, a corresponding anchor is put in, the central pipe is lifted upwards, the deblocking shear pin is cut off, and then the deblocking shear ring is cut off after the central pipe is continuously lifted to pass through an idle stroke, so that the whole body of the deblocking sleeve is completely fallen off, and the deblocking of the rubber sleeve and the slips is realized.

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