CN219365985U - A kind of setting device and retrievable inclined guide - Google Patents

Abstract

The utility model discloses a setting device and a recyclable deflection guide, wherein the setting device comprises an inner cylinder provided with an inner cavity, a central tube, a first outer cylinder body and a second outer cylinder body are sleeved outside the inner cylinder, a capsule packer is arranged outside the second outer cylinder body, when the setting device is used, the primary setting can be realized by means of the radial movement of a slip body along the inner cylinder and the axial movement of the inner cylinder and the engagement of the capsule packer and a sleeve or a well wall, and meanwhile, the secondary setting can be realized by means of the radial expansion of the capsule packer and the engagement of the capsule packer and the inner wall of the sleeve or the well wall, so that the setting stability is improved, and release can be realized by only lifting a drilling tool and the inner tube. The recoverable oblique ware of leading includes and sits the setting device, still including can dismantling the connection setting and being in sit the director of setting device top, simple structure, length are shorter, sit the setting action simple, lead oblique ware one-way card and go into, the work of device is not influenced by well skew, full angle change rate, all has stronger adaptability in the multi-branch horizontal well of different grade type, different well sections.

Description

A kind of setting device and retrievable inclined guide

technical field

The utility model belongs to the technical field of multi-branch drilling and completion, in particular to a setting device and a retrievable deflector.

Background technique

With the development of horizontal well and directional well technology, methods of sidetracking horizontal wells on the basis of existing drilling and using multi-branch horizontal wells for coalbed methane extraction have been widely cited. A key tool to use. In the prior art, the inclined device is mainly set mechanically, and the reliability of opening and closing of the setting device is poor. Due to the long working time of the setting device in the well, the working environment is complex, and the problem that the device fails and cannot be unsealed is prone to occur, and The deflector and the setting device that make up the deflector are used as a whole. If the setting device cannot be unsealed, it will be difficult to recover the deflector. Therefore, when the deflector fails, the deflector cannot be recovered, and the wellbore will eventually be scrapped.

To sum up, it is urgent to develop a setter and skewer suitable for multi-branch horizontal wells to improve the setting stability, and then improve the efficiency, success rate and quality of branching in horizontal wells.

Utility model content

The purpose of the utility model is to provide a setting device and a recoverable inclined device to solve the technical problems in the prior art that the setting of the inclined device is unstable and the success rate of recovery is low.

The technical scheme adopted in the utility model is:

A setting device, the setting device includes an inner cylinder provided with an inner cavity, the inner cavity is provided with a limit step for limiting the locking ball entering the inner cavity, the inner cavity A first outer cylinder is set outside the upper end of the cylinder, a second outer cylinder is set outside the lower end of the inner cylinder, a capsule packer is set outside the second outer cylinder, and a central pipe is also set outside the inner cylinder. The central tube includes a central tube body and an upper wedge, the lower end of the central tube extends into the second outer cylinder, and the upper end of the upper wedge extends into the first outer cylinder;

A lower wedge is also provided outside the central tube, and the lower wedge is connected to the inner cylinder through a through hole provided on the central tube body, and the upper wedge is opposite to the slope of the lower wedge;

The outer side of the upper wedge is provided with a slip body, the bottom end of the slip body is movably connected with the upper wedge 26 by means of a limit mechanism, and the slip body can be opened from the setting port on the wall of the first outer cylinder. wear out;

A cylinder body is arranged between the lower wedge block and the second outer cylinder, the cylinder body includes a cylinder housing and a piston body arranged along the circumference of the cylinder housing, the lower end surface of the piston body, the cylinder housing A first annular space is formed between the inner wall, the upper end surface of the second outer cylinder body, and the upper end surface of the central pipe body; the upper end surface of the piston body, the inner wall of the cylinder housing, the lower end surface of the lower wedge block, and the outer wall of the central pipe body form a first annular space. The second ring.

The utility model also has the following technical characteristics:

Specifically, the inner cylinder is connected to the lower wedge by means of shear pins, the upper wedge is threaded to the first outer cylinder body, and the center pipe body is threaded to the lower wedge.

Furthermore, a plurality of outer bosses are arranged at intervals along the circumferential direction on the outer wall of the inner cylinder, and a plurality of inner bosses are arranged at intervals along the circumferential direction on the inner wall of the bottom end of the first outer cylinder body, and between adjacent inner bosses A gap is formed, and the outer boss abuts against the upper end surface of the upper wedge block after passing through the gap;

A stopper is provided on one side of the upper end surface of the upper wedge, and the stopper is used to limit the rotation of the outer boss.

Furthermore, the capsule packer includes a capsule pressure plate, a first rubber cylinder, a second rubber cylinder and a third rubber cylinder arranged coaxially, and the upper end surface of the capsule pressure plate abuts against the lower end surface of the cylinder housing , the lower end surface of the third rubber tube abuts against the upper end surface of the helical part of the second outer cylinder.

Further, the inner wall of the first outer cylinder is provided with a plurality of axial key grooves along the circumference, and the inner wall of the first outer cylinder below the axial key grooves is provided with several snap-in mechanisms.

Further, the upper end of the cylinder housing is radially provided with a water outlet hole of the cylinder housing, and the water outlet hole of the cylinder housing communicates with a pressure relief groove provided on the pipe wall of the first outer cylinder, and the water outlet of the cylinder housing The hole and the pressure relief groove are pierced with a hollow spring pin that can expand and contract radially along the cylinder shell;

The lower wedge is provided with a water passage for the lower wedge, and the two ends of the water passage for the lower wedge can communicate with the water outlet hole of the cylinder housing and the second annular space respectively;

The hollow spring pin can be plugged and matched with the water channel of the lower wedge.

Furthermore, the limiting mechanism includes a limiting screw, and the limiting screw penetrates into the sliding groove of the upper wedge block through the installation hole opened radially along the slip body, and the bottom end of the limiting screw is connected to the limiting screw. A nut is arranged on the top of the limit screw, and a compression spring is arranged between the nut and the upper surface of the slip body.

The utility model also protects a recoverable inclined device, which includes the above-mentioned setting device, and also includes a guide device that can be disassembled and connected above the setting device. Connector under the device;

The side wall of the upper end of the inclined iron is provided with a first inclined guide block, a inclined guide lifting groove, a inclined guide recovery thread and a second inclined guide block from top to bottom, and the first inclined guide The spacer, the lifting groove of the skew guide and the second cushion block of the skew guide are arranged along the axial direction of the skew iron, and the recovery thread of the skew guide is arranged along the circumference of the skew iron; the inside of the skew iron is provided with a through hole along the axial direction, The inside of the through hole is provided with an internal thread of a deflector.

Furthermore, a plurality of axial positioning keys are arranged on the outer wall of the lower joint of the skew guide along the circumferential direction, and grooves are also provided under the axial positioning keys along the circumferential direction of the lower joint of the skew guide.

Furthermore, the upper end of the deflector is fitted with a bowl-shaped sealing ring.

The beneficial effects of the utility model are:

(1) Through structural design, the setting device provided by the utility model can move along the radial direction of the inner cylinder and the axial direction of the inner cylinder by means of the slip body to engage with the casing or the well wall to achieve a first-level setting. The radial expansion fits the inner wall of the casing or the well wall to realize the secondary setting, which improves the stability of the setting, and only needs to lift the drilling tool and the inner pipe to realize the release. Under the premise of affecting the tension and pressure of casing lowering, the setter can be dropped, which effectively solves the technical problem of unstable setting of the tilter in the prior art.

(2) The setter and guider of the retrievable inclined device of the utility model are detachably and fixedly connected, the structure is simple, the length is short, and the setting action is simple. Influenced by well deviation and full angle change rate, it has strong adaptability in different types of multi-branch horizontal wells and different well sections.

Description of drawings

The accompanying drawings are used to provide a further understanding of the present disclosure, and constitute a part of the description, together with the following specific embodiments, are used to explain the present disclosure, but do not constitute a limitation to the present disclosure. In the attached picture:

Fig. 1 is the structural schematic diagram of setting device;

Fig. 2 is the local structural representation of the utility model;

Fig. 3 is a schematic diagram of the unlocking state of the inner boss and the outer boss;

Figure 4 is a schematic diagram of the structure of the limit mechanism

Fig. 5 is a schematic diagram of the pipe string lowered by the deflector of the present invention.

The labels in the figure represent:

1- deflector, 2- setting device, 3- shear pin, 4- locking ball, 5- bowl seal ring, 6- first deflector spacer, 7- deflector lifting groove, 8 -recovery thread of the deflector, 9-the second deflector cushion block; 10-inner thread of the deflector; 11-slope iron, 12-lower joint of the deflector; 21-inner cylinder, 22-first outer cylinder , 23-second outer cylinder, 24-central tube body, 25-lower wedge, 26-upper wedge, 27-slip body, 28-limit mechanism, 29-cylinder body; 121-axial positioning key , 122-groove; 210-capsule packer, 211-first water outlet hole, 212-outer boss, 213-limiting step, 221-axial keyway, 222-ejection mechanism, 223-inner boss, 224-pressure relief groove, 225-sealing port; 241-second water outlet hole; 251-lower wedge block water channel, 261-block; 271-slip teeth, 272-installation hole; 281-limit screw, 282-nut, 283-compression spring; 284-limit nut; 291-cylinder housing, 292-piston body, 293-hollow spring pin; 2101-capsule pressure plate, 2102-first rubber tube, 2103-the first Second rubber cartridge, 2104-third rubber cartridge.

Detailed ways

Comply with above-mentioned technical scheme, provide the specific embodiment of the present utility model below, it should be noted that the utility model is not limited to following specific embodiment, all equivalent transformations done on the basis of the technical solution of the present application all fall into the utility model scope of protection.

Example 1

According to the above technical solution, as shown in Figures 1 to 3, this embodiment provides a setting device, the setting device 2 includes an inner cylinder 21 provided with an inner cavity, and the inner cavity is provided with a The locking ball 4 of the inner cavity is limited by the limit step 213, the outer side of the upper end of the inner cylinder 21 is set with a first outer cylinder 22, the outer side of the lower end of the inner cylinder 21 is set with a second outer cylinder 23, the second outer cylinder 23 is covered with a capsule packer 210, and the outer side of the inner cylinder 21 is also sleeved with a central tube. The central tube includes a connected central tube body 24 and an upper wedge 26. The lower end of the central tube body 24 extends to the second outer cylinder 23 Inside, the upper end of the upper wedge block 26 extends into the first outer cylinder body 22;

A lower wedge 25 is also arranged outside the central tube, and the lower wedge 25 is connected to the inner cylinder 21 through a through hole provided on the central tube body 24, and the upper wedge 26 is opposite to the slope of the lower wedge 25;

A slip body 27 is arranged on the outside of the upper wedge 26, and the bottom end of the slip body 27 is movably connected with the upper wedge 26 by means of a stop mechanism 28, and the slip body 27 can be opened from the opening on the wall of the first outer cylinder 22. The setting port 225 passes through, and the top surface of the slip body 27 is provided with slip teeth 271, the slip teeth can be engaged with the casing or the wall of the wellbore sleeved outside the setting device 2 to realize setting;

A cylinder body 29 is arranged between the lower wedge block 25 and the second outer cylinder body 23. The cylinder body 29 includes a cylinder housing 291 and a piston body 292 arranged along the circumference of the cylinder housing 291. The lower end surface of the piston body 292, the cylinder housing The first annular space is formed between the inner wall of the body 291, the upper end surface of the second outer cylinder body 23 and the upper end surface of the center pipe body 24; 24 A second annular space is formed between the outer walls;

When it is necessary to use the setting device for setting, the locking ball 4 is put into the inner cylinder 21, and the locking ball 4 is limited by the limit step that acts as a ball seat to close the downward passage of the high-pressure fluid in the inner cylinder 21, so that it enters the inner cylinder 21 The high-pressure fluid in the cylinder 21 can only enter the second annular space through the first water outlet hole 211 opened on the tube wall of the inner cylinder 21 and the second water outlet hole 241 opened on the center pipe body 24 in turn, and then push the lower wedge block 25 along the The inner cylinder 21 moves upward in the axial direction, and at the same time cuts off the shear pin 3, and then pushes the slip body 27 to move along the radial direction of the inner cylinder 21 and the axial direction of the inner cylinder 21 at the same time, so that the slip teeth 271 pass through the first outer tube. The setting port 225 on the 22 is engaged with the casing or the well wall to realize the first-level setting, and the casing is coaxially sleeved on the outside of the retrievable inclined device; in this embodiment, the slip body 27 and the stopper The number of mechanisms is 6, which are arranged at equal intervals along the circumference of the inner cylinder. The lower wedge 25 and the upper wedge 26 are both coaxially sleeved outside the inner cylinder 21, and their cross-sections are wedge-shaped as shown in FIG. 1 . The high-pressure fluid entering the second annulus also pushes the cylinder body 29 to move downward along the axial direction of the inner tube, and then pushes the capsule packer to expand radially along the second outer tube 23 and then fit to the inner wall of the casing to realize secondary setting.

As a preferred solution of this embodiment, the inner cylinder 21 is connected to the lower wedge 25 by means of shear pins 3, the upper wedge 26 is screwed to the first outer cylinder body 22, and the center pipe body 24 is screwed to the lower wedge 25. .

As a preferred solution of this embodiment, a plurality of outer bosses 212 are arranged at intervals in the circumferential direction on the outer wall of the inner cylinder 21, and a plurality of inner bosses 223 are arranged at intervals in the circumferential direction on the inner wall of the bottom end of the first outer cylinder body 22. A gap is formed between the adjacent inner bosses 223, and the outer boss 212 can go down to abut against the upper end surface of the upper wedge block 26 after passing through the gap;

A stopper 261 is provided on one side of the upper end surface of the upper wedge-shaped block 26 , and the stopper 261 is used to limit the rotation of the outer boss 212 , and the outer boss 212 can stop rotating when it encounters the stopper 261 .

As a preferred solution of this embodiment, the capsule packer 210 includes a capsule pressure plate 2101, a first rubber cylinder 2102, a second rubber cylinder 2103, and a third rubber cylinder 2104 arranged coaxially, and the upper end surface of the capsule pressure plate 2101 is It abuts against the lower end surface of the cylinder housing 291 , and the lower end surface of the third rubber tube 2104 abuts against the upper end surface of the helical part of the second outer cylinder 23 .

As a preferred solution of this embodiment, the inner wall of the first outer cylinder 22 is provided with a plurality of axial key grooves 221 along the circumferential direction, and the inner wall of the first outer cylinder 22 below the axial key grooves 221 is provided with several snap-in mechanisms 222 .

As a preferred solution of this embodiment, the upper end of the cylinder housing 291 is radially provided with a water outlet hole of the cylinder housing. A hollow spring pin 293 that can expand and contract radially along the cylinder housing 291 is perforated in the water outlet hole and the pressure relief groove 224 of the housing;

The lower wedge 25 is provided with a lower wedge water passage 251. In this embodiment, the lower wedge water passage is L-shaped, and the two ends of the L-shaped lower wedge water passage 251 can be connected to the cylinder housing respectively. The water outlet hole communicates with the second annular space; when the lower wedge block 25 moves upward along the axial direction of the inner cylinder 21, the lower wedge block water passage 251 moves to communicate with the water outlet hole of the cylinder shell, and the hollow spring pin 294 enters the lower wedge block to pass water The channel 251 forms a plug-in fit, and the high-pressure fluid in the second annular space flows through the lower wedge-shaped block water passage 251, the hollow spring pin 292, and the pressure relief groove 224 to flow out from the setting device 2 to complete the pressure relief.

As a preferred solution of this embodiment, the limit mechanism 28 includes a limit screw 281, the limit screw 281 penetrates the sliding groove 262 of the upper wedge block 26 through the installation hole 272 radially opened along the slip body 27, and the limit screw 281 The bottom end of the position screw 281 is connected with a limit nut 284, the top of the limit screw 281 is provided with a nut 282, and a compression spring 283 is arranged between the nut 282 and the upper surface of the slip body 27, and the limit screw 281 can move along its axial movement.

When this embodiment is in use:

Connect the upper end of the setting device 2 with the bottom end of the drill pipe, lower the setting device to the predetermined position in the well with the help of the drill pipe, lower the casing in advance according to the needs, and put the locking ball 4 into the drill pipe, After the locking ball 4 is limited by the limit step 213 in the inner cylinder 21, the downward passage of the high-pressure fluid in the inner cylinder 21 is closed, and the high-pressure fluid can only pass through the first water outlet hole 211 and the The second water outlet hole 241 opened on the center pipe body 24 enters the second annular space, and then pushes the lower wedge 25 to move axially along the inner cylinder 21, and cuts off the shear pin 3, and pushes the slip body 27 along the inner cylinder 21 at the same time. The radial direction and the axial movement of the inner cylinder 21 make the top of the slip body 27 pass through the setting port 225 provided on the first outer tube 22, and pass through the teeth with the casing or the well wall of the wellbore by means of the slip teeth 271. Occlusion realizes the first-level setting seal; in this embodiment, the number of slip bodies 27 and the limit mechanism are 6, which are arranged at equal intervals along the circumference of the inner cylinder, and the lower wedge 25 and the upper wedge 26 are coaxial sleeves It is arranged on the outside of the inner cylinder 21, and its section is wedge-shaped as shown in FIG. 1 .

At the same time, the high-pressure fluid entering the second annulus also pushes the cylinder body 29 to move downward along the axial direction of the inner cylinder, so that the first rubber cylinder 2102, the second rubber cylinder 2103 and the third rubber cylinder 2104 of the capsule packer 210 move along the The second outer pipe 23 expands radially and fits with the inner wall of the casing or the wellbore wall to realize secondary setting.

After on-site construction tests, the utility model has simple design and stable setting. It only needs to lift the drilling tool and the inner pipe to realize throwing away. On the premise of ensuring that the pulling force and pressure of the lowering of the casing are not affected, the setting device is realized. Throwing away effectively solves the technical problem of unstable setting of the tilter existing in the prior art.

Example 2

As shown in Figure 5, this embodiment provides a recoverable tilter, including the setting device 2 provided in Embodiment 1, and also includes a guide 1 that can be detachably connected and arranged above the setting device, and the guide 1 includes Connect the inclined iron 11 and the lower joint 12 of the deflector; the deflector 1 is used for sidetracking window opening guide, and the setting device 2 is used for axial and radial fixing of the deflector, and at the same time, it can realize the alignment of the lower part of the well. Suspension of casing strings.

On the side wall of the upper end of the inclined iron 11, the first inclined guide block 6, the inclined guide lifting groove 7, the inclined guide recovery thread 8 and the second inclined guide block 9 are sequentially arranged from top to bottom, and the first inclined guide The deflector pad 6, the deflector lifting groove 7 and the second deflector pad 9 are arranged axially along the inclined iron 11, and the deflector recovery thread 8 is arranged along the circumferential direction of the oblique iron 11; the inside of the oblique iron 11 is arranged axially There is a through hole, and the inside of the through hole is provided with a deflector internal thread 10.

As a preferred solution of this embodiment, a plurality of axial positioning keys 121 are arranged on the outer wall of the lower joint 12 of the skew guide along the circumferential direction, and a concave groove is arranged below the axial positioning keys 121 along the circumferential direction of the lower joint 12 of the skew guide. Slot 122.

As a preferred solution of this embodiment, the upper end of the deflector is fitted with a bowl-shaped sealing ring 5 .

The use process of this embodiment is as follows:

First, complete the setting of the setting device 2 according to the use process described in Example 1, then connect the deflection guide 1 to the bottom of the drilling tool and lower it to a certain distance above the design position, turn the directional drilling tool to the design position, and lower the guide From the inclined device 1 to the upper part of the setting device 2, pressurize to make the axial positioning key 121 enter the axial key groove 221, and then continue to pressurize so that the snap mechanism 222 enters the groove 122 to realize the locking of the inclined device 1, recyclable The lowering of the oblique device is completed.

After the window sidetracking operation of the retrievable skewer is completed, the recovery tool is lowered, and the drilling tool is lifted up to take out the deflector 1 .

The setter and the guider of the recoverable inclined device of the utility model are detachably and fixedly connected. The effect of full angle change rate has strong adaptability in different types of multi-branch horizontal wells and different well sections.

The preferred embodiments of the present disclosure have been described in detail above in conjunction with the accompanying drawings. However, the present disclosure is not limited to the specific details of the above embodiments. Within the scope of the technical concept of the present disclosure, various simple modifications can be made to the technical solutions of the present disclosure. These simple modifications all belong to the protection scope of the present disclosure.

In addition, it should be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner if there is no contradiction. The combination method will not be described separately.

In addition, various implementations of the present disclosure can be combined arbitrarily, as long as they do not violate the idea of the present disclosure, they should also be regarded as the content disclosed in the present disclosure.

Claims (10)

1. A setting device, the setting device (2) includes an inner cylinder (21) provided with an inner cavity, and the inner cavity is provided with a locking ball (4) for entering the inner cavity For the position-limiting step (213), the first outer cylinder (22) is set outside the upper end of the inner cylinder (21), and the second outer cylinder (23) is set outside the lower end of the inner cylinder (21). A capsule packer (210) is sheathed on the second outer cylinder (23), and it is characterized in that a central tube is also sleeved on the outside of the inner cylinder (21), and the central tube includes a connected central tube body (24) and an upper wedge (26), the lower end of the central tube body (24) extends into the second outer cylinder (23), and the upper end of the upper wedge (26) extends into the first outer cylinder Inside the cylinder (22); A first water outlet hole (211) is opened on the tube wall of the inner cylinder (21), and a second water outlet (241) capable of communicating with the first water outlet hole (211) is opened on the central pipe body (24); A lower wedge (25) is also provided outside the central tube, and the lower wedge (25) passes through a through hole provided on the central tube body (24) to be connected with the inner cylinder (21), and the upper wedge (26) is relatively arranged with the slope of lower wedge block (25); A slip body (27) is arranged on the outside of the upper wedge (26), and the bottom end of the slip body (27) is movably connected with the upper wedge (26) by means of a limit mechanism (28), and the slip body ( 27) It can pass through the setting port (225) provided on the wall of the first outer cylinder (22); A cylinder body (29) is arranged between the lower wedge (25) and the second outer cylinder (23), and the cylinder body (29) includes a cylinder housing (291) and ) a piston body (292) arranged circumferentially, the lower end surface of the piston body (292), the inner wall of the cylinder housing (291), the upper end surface of the second outer cylinder (23) and the upper end surface of the center pipe body (24) A first annular space is formed between them; a second annular space is formed between the upper end surface of the piston body (292), the inner wall of the cylinder housing (291), the lower end surface of the lower wedge block (25) and the outer wall of the center pipe body (24). 2. The setting device according to claim 1, characterized in that, the inner cylinder (21) is connected with the lower wedge (25) by means of shear pins (3), and the upper wedge (26) It is threadedly connected with the first outer cylinder (22), and the central pipe body (24) is threaded with the lower wedge (25). 3. The setting device according to claim 1, characterized in that, a plurality of outer bosses (212) are arranged at intervals along the circumferential direction on the outer wall of the inner cylinder (21), and the first outer cylinder (22) A plurality of inner bosses (223) are arranged at circumferential intervals on the inner wall of the bottom end, and gaps are formed between adjacent inner bosses (223), and the outer bosses (212) pass through the gaps to meet with the upper wedge ( 26) butt against the upper end surface; A stopper (261) is provided on one side of the upper end surface of the upper wedge (26), and the stopper (261) is used to limit the rotation of the outer boss (212). 4. The setting device according to claim 1, characterized in that, the capsule packer (210) comprises a capsule pressure plate (2101), a first rubber cylinder (2102), a second rubber cylinder (2102), and a coaxially connected set. cylinder (2103) and the third rubber cylinder (2104), the upper end surface of the capsule pressure plate (2101) abuts against the lower end surface of the cylinder housing (291), and the lower end surface of the third rubber cylinder (2104) contacts the second The upper end surface of the helical part of the outer cylinder (23) abuts against. 5. The setting device according to claim 1, characterized in that, the inner wall of the first outer cylinder (22) is provided with a plurality of axial key grooves (221) along the circumference, and the axial key grooves (221) A plurality of latching mechanisms (222) are arranged on the inner wall of the lower first outer cylinder (22). 6. The setting device according to claim 1, characterized in that, the upper end of the cylinder housing (291) is radially provided with a water outlet hole of the cylinder housing, and the water outlet hole of the cylinder housing is connected with the first outer cylinder. The pressure relief groove (224) on the pipe wall of the body (22) is connected, and the hollow spring pin ( 293); The lower wedge (25) is provided with a lower wedge water passage (251), and the two ends of the lower wedge water passage (251) can communicate with the water outlet hole of the cylinder housing and the second annular space respectively; The hollow spring pin (293) can be plugged and matched with the lower wedge block water channel (251). 7. The setting device according to claim 1, characterized in that, the limit mechanism (28) comprises a limit screw (281), and the limit screw (281) passes along the diameter of the slip body (27). Pass through the sliding groove (262) of the upper wedge block (26) to the mounting hole (272) provided, and the bottom end of the limit screw (281) is connected with the limit nut (284), and the top of the limit screw (281) A nut (282) is provided, and a compression spring (283) is arranged between the nut (282) and the upper surface of the slip body (27). 8. A retrievable inclined guide, characterized in that it includes the setting device according to any one of claims 1 to 7, and also includes a guide (1) that can be detachably connected and arranged above the setting device , the guide (1) includes a connected inclined iron (11) and a lower joint (12) of the inclined guide; The side wall of the upper end of the inclined iron (11) is provided with a first inclined guide block (6), an inclined guide lifting groove (7), a inclined guide recovery thread (8) and a second guide guide in sequence from top to bottom. The ramp block (9), the first ramp guide block (6), the ramp guide lifting groove (7) and the second ramp guide block (9) are arranged axially along the skew iron (11), The recovery screw thread (8) of the deflector is arranged along the circumferential direction of the oblique iron (11); a through hole is arranged in the axial direction of the oblique iron (11), and the internal thread of the deflector is arranged on the inside of the through hole ( 10). 9. The retrievable skew guide according to claim 8, characterized in that, a plurality of axial positioning keys (121) are arranged on the outer wall of the lower joint (12) of the skew guide along the circumference, and the shaft Below the positioning key (121), a groove (122) is also arranged along the circumference of the lower joint (12) of the deflector. 10. The retrievable skew guide according to claim 8, characterized in that a bowl-shaped sealing ring (5) is sleeved on the upper end of the skew guide.