CN112282691A

CN112282691A - Blowout prevention packer and hydraulic blowout control device thereof

Info

Publication number: CN112282691A
Application number: CN202011090038.4A
Authority: CN
Inventors: 周扬理; 岳吉祥; 綦耀光; 王国栋; 李振涛; 曹威龙; 韩梦杰; 李庆秋
Original assignee: Shengli College China University of Petroleum
Current assignee: Shengli College China University of Petroleum
Priority date: 2020-10-13
Filing date: 2020-10-13
Publication date: 2021-01-29

Abstract

The invention discloses a blowout prevention packer and a hydraulic blowout control device thereof, wherein the blowout prevention packer comprises a packing body, and a rotary outer sleeve, a rotary cone and a slip which are sequentially sleeved on the outer wall of the packing body from top to bottom, the upper end of the rotary outer sleeve is connected with a rotary driving mechanism, the lower end of the rotary outer sleeve is in threaded connection with the upper end of the rotary cone, the lower end of the rotary cone is provided with an outer conical surface, and the slip is provided with an inner conical surface which is in matched connection with the outer conical surface; the rotary slip is characterized in that a compression expansion part for sealing is arranged on the outer wall of the rotary outer sleeve, the lower end of the compression expansion part is located above the slip, and the upper end of the compression expansion part is connected with a compression driving mechanism. According to the invention, the technical effects of firstly tensioning the slips to be embedded into the inner wall of the sleeve and then expanding the sealing rubber cylinder can be realized through sequential operation, so that the problem of insufficient acting force when the slips are tensioned and the sealing rubber cylinder is expanded simultaneously is solved.

Description

Blowout prevention packer and hydraulic blowout control device thereof

Technical Field

The invention relates to the technical field of petroleum operation equipment, in particular to a blowout prevention packer and a hydraulic blowout prevention device thereof.

Background

Blowout accidents may occur due to oil or gas being blown out of the surface or into other formations in the well at various stages of the oil drilling process as well as during normal oil production. At present, the blowout control well mouth needs to be manually provided with a blowout control device to the well mouth, the environment is hard, and the danger is high; the packer in the existing blowout preventer is an indispensable downhole tool in the oil field for the oil testing, oil extraction, water injection and oil reservoir transformation processes; the packer is used for layering of a production zone in an oil production process, an oil production channel is designed inside the packer, a packing element mainly comprising a sealing rubber cylinder is arranged outside the packer, and the packer has the functions of setting and unsetting. Usually, the packer is designed with sealing pressure within a certain parameter range for adapting to different underground working conditions, however, in the oil extraction process, the underground condition is complicated and variable, and particularly, under the oil extraction modes such as water injection, oil displacement and the like, the pressure in a water well is generally higher than that in an oil well, and the conditions such as blowout, well kick and the like are easily induced.

Therefore, it is desirable to provide a blowout control device that has sufficient packing capacity and is convenient for safe operation.

Disclosure of Invention

The invention aims to provide a blowout prevention packer with good sealing effect and convenient safe operation and a hydraulic blowout control device thereof aiming at the defects and the defects of the prior art.

In order to achieve the purpose, the invention provides the following scheme: the invention provides a blowout prevention packer which comprises a packing body, and a rotary outer sleeve, a rotary cone and a slip which are sequentially sleeved on the outer wall of the packing body from top to bottom, wherein the upper end of the rotary outer sleeve is connected with a rotary driving mechanism, the lower end of the rotary outer sleeve is in threaded connection with the upper end of the rotary cone, the lower end of the rotary cone is provided with an outer conical surface, and the slip is provided with an inner conical surface which is in matched connection with the outer conical surface; the rotary slip is characterized in that a compression expansion part for sealing is arranged on the outer wall of the rotary outer sleeve, the lower end of the compression expansion part is located above the slip, and the upper end of the compression expansion part is connected with a compression driving mechanism.

Preferably, the rotating outer sleeve comprises an upper outer sleeve and a lower wear-resistant sleeve which are connected in a stepped descending manner, the upper outer sleeve is connected with the rotating driving mechanism, and the lower wear-resistant sleeve is in threaded connection with the upper end of the rotating cone; the compression expansion part is arranged on the lower wear-resistant sleeve.

Preferably, the upper outer sleeve and the lower wear-resistant sleeve are of an integrally formed structure, or the upper outer sleeve and the lower wear-resistant sleeve are of a split type connecting structure, and the upper outer sleeve is connected with the lower wear-resistant sleeve through a pipe thread.

Preferably, the rotating cone comprises an upper cone and a lower cone which are connected, the lower end of the rotating outer sleeve is in threaded connection with the upper end of the upper cone, and the outer cone is arranged on the lower cone.

Preferably, the upper cone and the lower cone are of an integrally formed structure, or the upper cone and the lower cone are of a split type connecting structure, and the upper cone is connected with the lower cone in an inserted manner.

Preferably, when the upper cone and the lower cone are of a split type connecting structure, the packing body is provided with a limiting sleeve for limiting the upward displacement of the lower cone, and a cone return spring for returning is arranged below the lower cone.

Preferably, the slips are mounted on the packing body by means of co-operating mountings.

Preferably, the rotation driving mechanism comprises a rotation hydraulic motor, a rotary speed reducer and an axial sliding sleeve which are connected, and the inner wall of the axial sliding sleeve is connected with the outer wall of the rotation outer sleeve through an axial key; the compression driving mechanism comprises compression expansion parts and a pressing part which are connected, the compression expansion parts are symmetrically arranged on the upper surface of the pressing part, and the lower surface of the pressing part is in contact connection with the upper end of the compression expansion part.

Preferably, the axial sliding sleeve can axially slide with the rotating outer sleeve.

The invention also provides a hydraulic blowout control device applying the blowout prevention packer, which comprises a lower support frame and an upper support frame which are in sliding connection, wherein the bottom of the lower support frame is provided with a front wheel and a rear wheel which are used for moving a device, and the lower support frame is symmetrically provided with locking mechanisms for fixing a wellhead casing; the utility model discloses a packer, including last support frame, expansion bracket, go up the moving mechanism, go up the expansion bracket and include by supreme mount, the expansion bracket that connects gradually down and move the mechanism, the mount with lower support frame sliding connection, just the mount through horizontal flexible portion with the lower support frame is connected, the expansion bracket through vertical flexible portion with the mount is connected, go up the moving mechanism include with expansion bracket sliding connection's packer mount, the expansion bracket with be provided with packer flexible portion between the packer mount, the slip direction of packer mount with the slip direction of last support frame is mutually perpendicular, the packer mount with in the blowout prevention packer rotate actuating mechanism compression actuating mechanism and pack and separate body fixed connection.

Preferably, the front wheel is fixedly mounted on a front wheel fixing frame, and the front wheel fixing frame is fixedly connected with the lower support frame; the rear wheel is fixedly arranged on a universal fixing frame, the universal fixing frame is connected to the rear wheel fixing frame through a pin shaft, and the rear wheel fixing frame is fixedly connected with the lower support.

Preferably, the locking mechanism comprises a claw box fixed on the lower support frame, a locking hydraulic motor, a screw, a sliding block and a claw assembly which are arranged on the claw box and are sequentially connected along the locking direction, and the claw assembly is symmetrically arranged and can lock the sleeve.

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

1. in the blowout prevention packer provided by the invention, two ends of a rotating outer sleeve are respectively connected with a rotating driving mechanism and a rotating cone, the rotating cone is connected with a slip in a matching way, and a compression expansion part connected with a compression driving mechanism is arranged on the outer wall of the rotating outer sleeve, so that the rotating driving mechanism can drive the rotating outer sleeve to drive the rotating cone to open the slip, the compression driving mechanism drives the compression expansion part to expand the compression expansion part, namely, the clamping jaws and the compression expansion part perform independent action by adopting the mode; therefore, the technical effects that the slips are tensioned and embedded into the inner wall of the sleeve and then the sealing rubber cylinder is expanded can be realized through sequential operation, and the problem that the acting force is insufficient when the slips are tensioned and the sealing rubber cylinder is expanded simultaneously is solved;

2. the hydraulic blowout control device provided by the invention adopts the lower support frame and the upper support frame which are connected in a sliding manner, the lower support frame is provided with the locking mechanism, the upper support frame is provided with the blowout prevention packer, so that the locking structure is separated from the packing structure, the mutual influence of the locking structure and the packing structure is avoided, and meanwhile, the packer can quickly and sequentially complete the front-back centering, the left-right centering and the lifting movement in the locking process by adopting the modes of the transverse telescopic part, the packer telescopic part and the vertical telescopic part, so that the safety operation of the device is facilitated.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without inventive exercise.

FIG. 1 is a schematic view of the overall structure of the blowout prevention packer of the present invention;

FIG. 2 is an enlarged view of a portion of the FIG. 1 clamping shoe in its open position;

FIG. 3 is an enlarged view of a portion of the check valve of FIG. 1 in an open state;

FIG. 4 is an enlarged fragmentary view of the check valve of FIG. 1 in a closed condition;

FIG. 5 is a schematic structural view of the upper cone of FIG. 1;

FIG. 6 is a schematic view of the overall structure of the hydraulic blowout control device according to the present invention;

FIG. 7 is a side view of FIG. 6;

FIG. 8 is a top view of FIG. 6;

FIG. 9 is a schematic structural view of the locking mechanism of FIG. 6;

FIG. 10 is a schematic structural view of the lower support frame of the present invention with a limiting block;

the locking mechanism 1, the transverse expansion part 2, the fixing frame 3, the vertical expansion part 4, the axial sliding sleeve 5, the expansion frame 6, the packer fixing frame 7, the rotary speed reducer 9, the central connecting pipe 10, the packer expansion part 12, the compression expansion part 13, the pressing part 14, the blowout prevention packer 15, the sliding rail 16, the front wheel 17, the front wheel fixing frame 18, the lower supporting frame 19, the limiting block 1901, the casing 20, the universal fixing frame 21, the rear wheel 22, the rear wheel fixing frame 23, the rotary hydraulic motor 24, the guide connecting rod 25, the jaw plate 26, the jaw assembly 27, the slider 28, the screw 29, the jaw box 30, the locking hydraulic motor 31, the upper outer casing 32, the spacer ring 33, the lower anti-protrusion ring 34, the centralizer 35, the mounting seat 36, the slip 37, the lower cone 38, the limiting casing 39, the upper cone 40, the compression expansion part 41, the wear-resistant casing 42, the upper anti-protrusion ring 43, the one-way valve 45, check valve body 451, check valve retainer plate 452, check valve spring 453, check valve side opening 454, check valve sliding sleeve 455, and check valve outlet 456.

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.

In order to make the aforementioned objects, features and advantages of the present invention comprehensible, embodiments accompanied with figures are described in further detail below.

As shown in fig. 1-5, the invention provides a blowout prevention packer 15, which comprises a packing body, and a rotating outer sleeve, a rotating cone and a slip 37 which are sequentially sleeved on the outer wall of the packing body from top to bottom, wherein the upper end of the rotating outer sleeve is connected with a rotating driving mechanism, the lower end of the rotating outer sleeve is in threaded connection with the upper end of the rotating cone, the lower end of the rotating cone is provided with an outer conical surface, and the slip 37 is provided with an inner conical surface which is in matched connection with the outer conical surface; the outer wall of the rotating outer sleeve is provided with a compression expansion part 41 for sealing, the lower end of the compression expansion part 41 is positioned above the slips 37, and the upper end of the compression expansion part 41 is connected with a compression driving mechanism. The packer body further includes other structures, such as the central connection pipe 10, the check valve, and the centralizer 35 shown in fig. 1, and since most of the existing packers have other structures with corresponding functions, there will be differences in positions or specific structures, for example, as shown in fig. 3, the check valve 45 of the present invention includes a check valve body 451, a check valve limiting plate 452, a check valve spring 453, a check valve side opening 454, a check valve sliding sleeve 455, and a check valve outlet 456; when high-pressure liquid in the well is flushed upwards, the pressure difference drives the check valve sliding sleeve 455 to slide upwards, and the check valve sliding sleeve slides to the position of the check valve outlet 456 to be in contact with the check valve outlet 456 to form a closed space, so that the check valve is closed upwards; the larger the impact force of the high-pressure liquid is, the tighter the one-way valve is closed; when the external manifold is connected with the central connecting pipe 10 and high-pressure slurry is pumped into the well, and when the pressure of the high-pressure slurry is greater than the pressure of high-pressure liquid in the well, the one-way valve sliding sleeve 455 slides downwards under the action of pressure difference, the movement is limited by the one-way valve limiting plate 452 when the external manifold slides to the position of the one-way valve limiting plate 452, the outlet 456 of the one-way valve is opened at the moment, the passage is opened, and the high-pressure slurry enters the well through the side opening 454 of the one-way valve through the. The working process of the blowout prevention packer 15 in the invention is as follows: when the lower end of the packer is lowered to a wellhead or a length in the casing 20, the rotary driving mechanism drives the rotary outer casing to drive, wherein the rotary driving mechanism is a driving structure in the prior art, such as a driving gear of a motor and the like or a gear-like structure below, so that the rotary outer casing can rotate circumferentially on the outer wall of the packing body along with the rotary driving structure; because the rotating outer sleeve is in threaded connection with the rotating cone, when the rotating outer sleeve rotates, the rotating cone is driven to rotate and descend, the slips 37 are in conical surface contact in the descending process of the rotating cone, so that the slips 37 are expanded outwards, and then the compression driving mechanism is used for compressing and expanding the plurality of compression expansion parts 41 to realize the sealing work of a wellhead; it should be noted here that: in order to avoid that the rotating cone cannot move relative to the rotating outer sleeve, the outer friction may be increased, for example by pressing and contacting the lower end of the compression expansion part 41 with the lower end of the rotating cone, or a structure similar to the compression expansion part 41 which can be compressed and deformed, such as a spring and the like, is separately provided, and the compression force is provided to the rotating cone at any time along with the movement of the rotating cone, so that the rotating cone can be fixed, and then moves relative to the rotating outer sleeve in the axial direction, and certainly in the initial state, if the inner conical surface on the slips 37 can generate a certain squeezing effect on the outer conical surface on the rotating cone, it is also possible to have the rotary cone axially displaceable relative to the rotary outer sleeve, and the relative positions of the rotary cone and the slips 37 can be achieved by providing a limit sleeve 39 as described below; the compression and expansion parts 41 are preferably rubber cylinders, a spacer ring 33 is arranged between the adjacent compression and expansion parts 41, an upper anti-protruding ring 43 is arranged on the upper end surface of the uppermost compression and expansion part 41, and a lower anti-protruding ring 34 is arranged on the lower end surface of the lowermost compression and expansion part 41; the compression driving mechanism may be an existing component such as a telescopic cylinder or an air cylinder, and may be realized by a structure having a lifting function such as a motor and a threaded rod, and may have a function of extending, contracting, or lifting, and is preferably a component that can be used for automatic control, such as a telescopic cylinder.

On one hand, the service life of the device is prolonged, on the other hand, the matching relation between the structures is enhanced, the combined utilization effect of the device structure is improved, and the structure of the device is simpler; the rotary outer sleeve comprises an upper outer sleeve 32 and a lower wear-resistant sleeve 42 which are connected in a stepped-down manner, the stepped-down structure is convenient for the structure at the upper part to be connected with a rotary driving mechanism, namely the upper outer sleeve 32 is convenient to be connected with the rotary driving mechanism, the problems that the structure is large in size due to the fact that the outer edge of a compression expansion part 41 is too prominent, the process of brake shoe stroke can be derived and the like are solved, and the lower wear-resistant sleeve 42 is in threaded connection with the upper end of a rotary cone; meanwhile, the compression expansion part 41 is arranged on the lower wear-resistant sleeve 42, so that the problem that the compression expansion part 41 is subjected to extrusion force and the friction force is too large due to too large impact force is solved; in order to further simplify the structure and ensure that the rotating cone can realize relative movement, the upper end of the compression expansion part 41 is abutted against the stepped surface, and the lower end of the compression expansion part 41 is abutted against the upper end surface of the rotating cone.

Further, the connection mode of the upper outer sleeve 32 and the lower wear-resistant sleeve 42 is various, in the present invention, the upper outer sleeve 32 and the lower wear-resistant sleeve 42 are of an integrally formed structure, or the upper outer sleeve 32 and the lower wear-resistant sleeve 42 are of a split connection structure, the upper outer sleeve 32 is connected with the lower wear-resistant sleeve 42 through a pipe thread, and the preferred mode is a following pipe thread connection.

In order to facilitate the manufacturing and later installation work and improve the operation sensitivity of the structure, the rotating cone comprises an upper cone 40 and a lower cone 38 which are connected, the lower end of the rotating outer sleeve is in threaded connection with the upper end of the upper cone 40, and the outer cone is arranged on the lower cone 38. Further, in the present invention, the upper cone 40 and the lower cone 38 are an integrally formed structure, or the upper cone 40 and the lower cone 38 are a split connection structure, the upper cone 40 and the lower cone 38 are connected by plugging, the upper cone 40 may preferably have a structure as shown in fig. 9, or the upper cone 40 and the lower cone 38 may be mounted in an interference fit manner.

In the invention, as the upper cone 40 and the lower cone 38 are of a split type connection structure as shown in fig. 9, in order to avoid the separation of the upper cone 40 and the lower cone 38, the lower cone 38 is separated from the original position in a transition manner, that is, in a limiting and limiting manner, a limiting sleeve for limiting the upward displacement of the lower cone 38 is arranged on the packing body, and a cone return spring for returning is arranged below the lower cone 38; of course, if necessary, the upper side of the limiting sleeve can limit the displacement of the upper cone 40 to a certain extent by arranging a limiting protrusion and other structures.

As shown in FIG. 2, slips 37 of the present invention are mounted to the packing body by cooperating mounting blocks 36 for ease of installation and use.

As a specific embodiment, the rotation driving mechanism in the invention comprises a rotation hydraulic motor 24, a rotary speed reducer 9 and an axial sliding sleeve 5 which are connected, wherein the inner wall of the axial sliding sleeve 5 is connected with the outer wall of a rotation outer sleeve through an axial key; the compression driving mechanism comprises a compression expansion part 13 and a pressing part 14 which are connected, the compression expansion part 13 is symmetrically arranged on the upper surface of the pressing part 14, and the lower surface of the pressing part 14 is in contact connection with the upper end of the compression expansion part 41.

The axial sliding sleeve 5 can axially slide with the rotating outer sleeve; the pressing portion 14 is provided with a guide bar.

As shown in fig. 6-9, the invention further provides a hydraulic blowout control device using the blowout prevention packer 15, which comprises a lower support frame 19 and an upper support frame which are connected in a sliding manner, wherein the bottom of the lower support frame 19 is provided with a front wheel 17 and a rear wheel 22 which are used for moving the device, and the lower support frame 19 is symmetrically provided with locking mechanisms which are used for fixing a wellhead casing 20; the upper supporting frame comprises a fixing frame 3, an expansion frame 6 and an upper moving mechanism, the fixing frame 3 is connected with a lower supporting frame 19 in sequence from bottom to top, the fixing frame 3 is connected with the lower supporting frame 19 through a transverse expansion part 2, the expansion frame 6 is connected with the fixing frame 3 through a vertical expansion part 4, the upper moving mechanism comprises a packer fixing frame 7 connected with the expansion frame 6 in a sliding manner, a packer expansion part 12 is arranged between the expansion frame 6 and the packer fixing frame 7, the sliding direction of the packer fixing frame 7 is perpendicular to the sliding direction of the upper supporting frame, the packer fixing frame 7 is connected with a rotation driving mechanism in the blowout prevention packer 15, a compression driving mechanism and a packing body are fixedly connected.

In order to facilitate installation and move to corresponding positions, the front wheel 17 is fixedly installed on a front wheel fixing frame 18, and the front wheel fixing frame 18 is fixedly connected with a lower supporting frame 19; the rear wheel 22 is fixedly arranged on the universal fixing frame 21, the universal fixing frame 21 is connected to the rear wheel fixing frame 23 through a pin shaft, and the rear wheel fixing frame 23 is fixedly connected with the lower support; the universal fixing frames 21 of the two rear wheels 22 are connected through a guide connecting rod 25, and the guide connecting rod 25 is connected to the universal fixing frame 21 through a pin shaft.

In order to facilitate locking, the locking mechanism comprises a jaw box fixed on the lower support frame 19, a locking hydraulic motor 31, a screw 29, a sliding block 28 and a jaw assembly 27 which are arranged on the jaw box 30 and sequentially connected along the locking direction, wherein the jaw assemblies 27 which are symmetrically arranged can lock the sleeve 20; for added safety and ease of maintenance, a removable catch plate 26 is provided on the jaw case 30.

The emergency work flow of the hydraulic emergency spraying device applied in the invention is as follows:

after an oilfield drilling blowout accident occurs, the wellhead condition is firstly checked, then wellhead obstacles are processed, the wellhead is fully exposed, and a casing 20 or a casing head is left at the wellhead. After the integrated device is pushed to a wellhead, as shown in fig. 10, firstly, the limiting block 1901 on the lower support frame 19 and the outer wall of the sleeve 20 are preliminarily positioned, then the hydraulic motor of the locking mechanism rotates to drive the screw rod to move, the sliding block moves forwards for a certain distance by utilizing spiral transmission, so that the jaw assembly extends out of the jaw box to clamp the sleeve 20, and the rooting clamping is completed. In the rooting process, the axes of the blowout prevention packer 15 and the sleeve 20 cannot coincide and need to be separated by a certain distance, so that the impact of high-pressure oil gas sprayed by the sleeve 20 on the whole device is avoided, and the stability of the device in the rooting process is ensured. The reliability of the locking mechanism for clamping the sleeve 20 can be ensured by utilizing the principle of screw transmission self-locking; after rooting is finished, the upper support frame moves left and right on the slide rail 16 of the lower support frame 19 under the action of the transverse telescopic part 2, and the packer fixing frame 7 moves back and forth in the sliding groove of the upper support frame under the action of the packer telescopic part 12, so that the well blowout prevention packer 15 is centered with the sleeve 20; after the centering is completed, the expansion bracket 6 moves downwards relative to the lower support frame 19 under the action of the vertical expansion part 4, so that the blowout prevention packer 15 is placed in the casing 20, after the blowout prevention packer is placed for a certain distance, the rotary speed reducer 9 hydraulic motor rotates to drive the axial sliding sleeve 5 to rotate, the axial sliding sleeve 5 enables the upper outer casing 32 of the packer to generate rotating torque, so that the upper cone 40 rotates, the upper cone 40 and the lower cone 38 are in inclined plane contact, the upper cone 40 rotates, the lower cone 38 generates axial displacement, the lower cone 38 is in inclined plane contact with the slips 37, the lower cone 38 moves downwards, the slips 37 generates radial displacement, and therefore the inner wall of the casing 20 is tensioned. Then the pressing part 14 moves downwards under the action of the compression and expansion part 13 to compress the compression and expansion part 41, the compression and expansion part 41 is pressed into the casing 20, and the annular space between the casing 20 and the blowout prevention packer 15 is sealed to realize the sealing of the wellhead; and finally, high-pressure mud is injected into the middle annular space of the central connecting pipe 10, and bottom hole pressure balance is reestablished.

The principle and the implementation mode of the invention are explained by applying a specific example, and the description of the embodiment is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, the specific embodiments and the application range may be changed. In view of the above, the present disclosure should not be construed as limiting the invention.

Claims

1. A blowout prevention packer is characterized by comprising a packing body, a rotary outer sleeve, a rotary cone and a slip, wherein the rotary outer sleeve, the rotary cone and the slip are sequentially sleeved on the outer wall of the packing body from top to bottom; the rotary slip is characterized in that a compression expansion part for sealing is arranged on the outer wall of the rotary outer sleeve, the lower end of the compression expansion part is located above the slip, and the upper end of the compression expansion part is connected with a compression driving mechanism.

2. The blowout prevention packer of claim 1, wherein the rotating outer sleeve comprises an upper outer sleeve and a lower wear sleeve which are connected in a stepped-down manner, the upper outer sleeve is connected with the rotating driving mechanism, and the lower wear sleeve is in threaded connection with the upper end of the rotating cone; the compression expansion part is arranged on the lower wear-resistant sleeve.

3. The blowout prevention packer of claim 2, wherein the upper outer sleeve and the lower wear sleeve are of an integrally formed structure, or the upper outer sleeve and the lower wear sleeve are of a split connection structure, and the upper outer sleeve is connected with the lower wear sleeve through a pipe thread.

4. The blowout prevention packer of claim 1 or 2, wherein the rotating cone comprises an upper cone and a lower cone which are connected, the lower end of the rotating outer sleeve is in threaded connection with the upper end of the upper cone, and the outer conical surface is arranged on the lower cone.

5. The blowout prevention packer of claim 4, wherein the upper cone and the lower cone are of an integrally formed structure, or the upper cone and the lower cone are of a split connection structure, and the upper cone and the lower cone are connected in an inserted manner.

6. The blowout prevention packer as claimed in claim 5, wherein when the upper cone and the lower cone are in a split connection structure, the packer body is provided with a limiting sleeve for limiting the upward displacement of the lower cone, and a cone return spring for returning is arranged below the lower cone.

7. The blowout prevention packer of claim 1, wherein the slips are mounted on the pack-off body by a cooperating mounting block.

8. The blowout prevention packer of claim 1, wherein the rotational driving mechanism comprises a rotational hydraulic motor, a rotational reducer and an axial sliding sleeve which are connected, and an inner wall of the axial sliding sleeve is connected with an outer wall of the rotational outer sleeve through an axial key; the compression driving mechanism comprises compression expansion parts and a pressing part which are connected, the compression expansion parts are symmetrically arranged on the upper surface of the pressing part, and the lower surface of the pressing part is in contact connection with the upper end of the compression expansion part.

9. The blowout prevention packer of claim 8, wherein the axial sliding sleeve is axially slidable with the rotating outer sleeve.

10. The hydraulic blowout control device applying the blowout prevention packer as claimed in any one of claims 1 to 9, which is characterized by comprising a lower support frame and an upper support frame which are connected in a sliding manner, wherein the bottom of the lower support frame is provided with a front wheel and a rear wheel which are used for moving devices, and the lower support frame is symmetrically provided with locking mechanisms which are used for fixing a wellhead casing; the utility model discloses a packer, including last support frame, expansion bracket, go up the moving mechanism, go up the expansion bracket and include by supreme mount, the expansion bracket that connects gradually down and move the mechanism, the mount with lower support frame sliding connection, just the mount through horizontal flexible portion with the lower support frame is connected, the expansion bracket through vertical flexible portion with the mount is connected, go up the moving mechanism include with expansion bracket sliding connection's packer mount, the expansion bracket with be provided with packer flexible portion between the packer mount, the slip direction of packer mount with the slip direction of last support frame is mutually perpendicular, the packer mount with in the blowout prevention packer rotate actuating mechanism compression actuating mechanism and pack and separate body fixed connection.

11. The hydraulic blowout control device according to claim 10, wherein the front wheel is fixedly mounted on a front wheel fixing frame, and the front wheel fixing frame is fixedly connected with the lower support frame; the rear wheel is fixedly arranged on a universal fixing frame, the universal fixing frame is connected to the rear wheel fixing frame through a pin shaft, and the rear wheel fixing frame is fixedly connected with the lower support.

12. The hydraulic blowout preventer according to claim 10, wherein the locking mechanism comprises a jaw box fixed on the lower support frame, and a locking hydraulic motor, a screw, a slider and a jaw assembly which are arranged on the jaw box and sequentially connected in the locking direction, and the jaw assembly which is symmetrically arranged can lock the sleeve.