Reinforcement open type intelligent fracturing sliding sleeve system

Abstract

The invention relates to the technical field of fracturing sliding sleeves, in particular to a reinforcement open type intelligent fracturing sliding sleeve system. In order to improve the problem that a sliding sleeve is blocked when being opened due to cement consolidation during well cementation, the invention aims to provide a fracturing sliding sleeve tool which is not limited by fracturing stages and can autonomously increase force when being opened for the first time. According to the scheme, the displacement intelligent label unit is clamped in front of the target intelligent fracturing sliding sleeve unit and is in a pressure balance state, and after clamping, a center channel of the target intelligent fracturing sliding sleeve unit is blocked, so that the pressures in the target intelligent fracturing sliding sleeve unit and located on the two sides of the axis of the intelligent label unit are relatively independent; due to the fact that the equivalent stress area, close to the wellhead end, of the blocked position of the central channel in the target intelligent fracturing sliding sleeve unit is larger than the equivalent stress area, away from the wellhead end, of the blocked position, thrust for pushing the intelligent label unit downwards can be generated, and the intelligent fracturing sliding sleeve can be opened after the ground pump truck presses the target intelligent fracturing sliding sleeve unit to reach the limited pressure of the locking mechanism.

Description

Technical Field

[0001] The invention relates to the technical field of fracturing sleeves, and more particularly to a force-enhanced opening type intelligent fracturing sleeve system. Background Art

[0002] At present, the number of low-permeability oil and gas fields that are being developed in my country is gradually increasing, while the number of medium and high permeability oil and gas fields that can be developed is decreasing. Traditional process technologies are difficult to develop effectively, making the technical measure of layered and step-by-step fracturing particularly important in the development of oil and gas fields. The fracturing sleeve is the key to the current staged fracturing tool. The quality of its performance directly affects the quality of layered fracturing, thereby affecting the efficiency of oil and gas production in oil and gas wells. Commonly used staged and step-by-step fracturing technologies include: ball-dropping sleeve, pumping bridge plug perforation joint fracturing technology, and continuous tubing hydraulic jet fracturing technology. Among them, the most commonly used is the ball-dropping sleeve. Its obvious disadvantage is that the size specifications must be arranged from small to large before the fracturing operation can be performed. Therefore, the number of sleeves used in the same well is limited, which limits the number of fracturing layers; at the same time, cement consolidation is prone to occur during cementing, causing the sleeve to be blocked when it is opened. After the ball-dropping operation is completed, due to the pressure limit at the ground wellhead, it is impossible to apply a higher pressure to open the sleeve. Summary of the invention

[0003] The present invention provides a force-enhanced opening type intelligent fracturing sleeve system, and aims to provide a fracturing sleeve tool which is not limited by the fracturing stage and can autonomously increase force when opened for the first time.

[0004] The above purpose is achieved through the following technical solutions:

[0005] A smart label unit comprises a smart label unit body, a locking device fixed to the smart label unit body, and a guide compression module for driving the locking device to expand.

[0006] It also includes a control module for controlling the guide compression module, and a battery module for the guide compression module and the control module.

[0007] The main body of the smart label unit is in the shape of a cylinder with an arc protrusion at the bottom.

[0008] An intelligent fracturing sleeve unit comprises an outer sleeve, a fracturing hole arranged on the outer sleeve, a locking mechanism fixed to the outer sleeve, a slideway arranged inside the outer sleeve, an inner sleeve located in the slideway is slidably connected inside the outer sleeve, the inner sleeve is locked by the locking mechanism, the inner sleeve is used to block the fracturing hole, and an intelligent label unit can pass through the outer sleeve and the inner sleeve, and can be locked in the inner sleeve when the intelligent label unit expands.

[0009] An induction ring is arranged on the outer sleeve or the inner sleeve.

[0010] The outer casing includes an upper casing and a lower casing detachably connected to the lower end of the upper casing. The inner wall of the lower casing is provided with a first diameter expansion section and a second diameter expansion section from top to bottom. The inner diameter of the first diameter expansion section is larger than that of the second diameter expansion section to form a first shoulder and a second shoulder from top to bottom. The fracturing hole is provided on the lower casing.

[0011] At least three sealing rings are arranged on the outer wall of the inner casing, and the three sealing rings are distributed from top to bottom on the upper side of the fracturing hole, between the locking mechanism and the position before the outer diameter of the inner casing is reduced, and on the lower side of the first shoulder.

[0012] The locking mechanism is a shear-type pin, which is fixed on the outer sleeve and clamped on the inner sleeve; or, the locking mechanism includes a plug, the inner end of the plug is fixedly connected to the outer end of the compression spring, the inner end of the compression spring is fixedly connected to the locking piece, and the outer sleeve is provided with a radial groove for installing the locking mechanism, so that the plug is fixed to the inner wall of the outer sleeve, the compression spring can be extended and retracted in the radial groove, the locking piece can also move radially in the radial groove, and the locking piece is clamped on the inner sleeve; or, the locking mechanism is an elastic spring leaf or a retaining spring, the locking mechanism is fixed on the inner sleeve, the locking mechanism is clamped in the radial groove formed between the lower sleeve and the upper sleeve, or the locking mechanism is clamped in the radial groove on the lower sleeve;

[0013] When the locking mechanism includes a locking member, the locking member is a wedge, a ball or a double bevel.

[0014] A force-enhanced opening intelligent fracturing sleeve opening method comprises the following steps:

[0015] Step 1: Initially, there is no blockage in the central channel of the intelligent fracturing sleeve unit, the upper end face and the lower end face of the intelligent fracturing sleeve unit are connected by the central channel, and the intelligent fracturing sleeve unit is in a pressure balance state;

[0016] Step 2: After the smart tag unit is fixed on the target smart fracturing sleeve unit, the central channel of the target smart fracturing sleeve unit is blocked, resulting in relatively independent pressure inside the target smart fracturing sleeve unit and on both sides of the axis of the smart tag unit. Due to the obstruction of the central channel inside the target smart fracturing sleeve unit, the equivalent force area close to the wellhead end is larger than the equivalent force area far from the wellhead end, so a thrust is generated to push the smart tag unit downward, and then the smart fracturing sleeve can be opened after the ground pump truck presses up to the limited pressure of the locking mechanism.

[0017] The beneficial effects of the force-enhanced opening intelligent fracturing sleeve system of the present invention are:

[0018] 1. After the main body of the smart tag unit is locked in place, the pressure balance can be broken and the thrust to open the smart fracturing sleeve unit can be generated autonomously, thereby reducing the pressure applied by the ground pump truck. In oil and gas wells with low wellhead pressure limit, the smart fracturing sleeve unit can still be opened smoothly.

[0019] 2. Effectively improve the anti-cement consolidation effect of the underground intelligent fracturing sleeve, and increase the power for the first opening of the intelligent fracturing sleeve unit.

[0020] 3. The force-enhancing structure is relatively simple and does not require manual operation. Force-enhancing can be achieved through downhole pressure and intelligent opening tools. The processing is simple and the production cost is low.

[0021] 4. The present invention only requires hydraulic drive to complete a series of constructions, with low construction cost and high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 A schematic diagram showing the force-enhanced opening intelligent fracturing sleeve system when the fracturing hole 2-2 is closed;

[0023] Figure 2 A schematic diagram showing the force-enhanced opening intelligent fracturing sleeve system when the fracturing hole 2-2 is opened;

[0024] Figure 3 A schematic diagram showing an upper casing, a lower casing 2-1 and a fracturing hole 2-2 is shown;

[0025] Figure 4 A schematic diagram of an embodiment of a locking mechanism is shown;

[0026] Figure 5 A schematic diagram of a second embodiment of the locking mechanism is shown;

[0027] Figure 6 A schematic diagram of a third embodiment of the locking mechanism is shown;

[0028] Figure 7 A schematic diagram of a fourth embodiment of the locking mechanism is shown;

[0029] Figure 8 A schematic diagram of a fifth embodiment of the locking mechanism is shown;

[0030] Fig. 9 A schematic diagram of a smart label unit is shown;

[0031] Fig.10 Shown Figure 1 The enlarged schematic diagram at A in the middle;

[0032] Fig.11 Shown Figure 2 The enlarged schematic diagram of point B in the middle;

[0033] Fig.12 The schematic diagram of the smart tag unit opening the target smart fracturing sleeve unit is shown;

[0034] Fig.13A schematic diagram of the force bearing area of ​​the upper and lower end surfaces of the inner sleeve 4-1 is shown;

[0035] Fig.14 and 15 A schematic diagram of the gas absorption unit is shown.

[0036] In the figure: 1-1, upper casing; 1-2, induction ring; 2-1, lower casing; 2-2, fracturing hole; 2-3a, first shoulder; 2-3b, second shoulder; 3, locking mechanism; 3a, blockage; 3b, compression spring; 3c, wedge; 3d, ball; 3f, retaining spring; 3e, elastic spring; 4-1, inner casing; 4-2, third shoulder; 4-3, sealing ring; 4d, double bevel, 4-4 gas absorption unit; 4-4a, annular signal receiving device; 4-4b, signal generating device; 4-4c, ignition module; 4-4d power supply module; 4-4e solid fuel; 5-1, smart tag unit body; 5-2, locking device. DETAILED DESCRIPTION

[0037] A force-enhanced opening intelligent fracturing sleeve system, comprising an intelligent fracturing sleeve unit and an intelligent label unit;

[0038] For example Figures 1 to 3 , the intelligent fracturing sleeve unit includes an upper casing 1-1, and an induction ring 1-2 is fixed inside the upper casing 1-1. The lower end of the upper casing 1-1 is connected to the lower casing 2-1 by threaded fitting, and a fracturing hole 2-2 is arranged on the lower casing 2-1. The inner wall of the lower casing 2-1 is provided with a first diameter expansion section and a second diameter expansion section from top to bottom, and the inner diameter of the first diameter expansion section is larger than the second diameter expansion section to form a first shoulder 2-3a and a second shoulder 2-3b from top to bottom. A locking mechanism 3 is arranged on the inner wall of the lower casing 2-1, and an inner casing 4-1 is slidably connected inside the lower casing 2-1. The outer diameter of the inner casing 4-1 is reduced on the lower side to form a stepped structure, so that the inner casing 4-1 slides and fits in the first diameter expansion section and the second diameter expansion section. The locking mechanism 3 is used to fix the inner casing 4-1. At this time, the inner casing 4-1 blocks the fracturing hole 2-2, and the intelligent fracturing sleeve unit is in a closed state. Combined with Fig.10 , a third shoulder 4-2 protruding inward is formed on the inner wall of the inner casing 4-1. The upper casing 1-1, the lower casing 2-1 and the inner casing 4-1 have the same minimum inner diameter except for the third shoulder 4-2, forming a full diameter. When the locking mechanism 3 releases the inner casing 4-1, the maximum downward displacement of the inner casing 4-1 is when the inner casing 4-1 is simultaneously locked on the first shoulder 2-3a and the second shoulder 2-3b to open the fracturing hole 2-2, and the intelligent fracturing sleeve unit is in the open state.

[0039] Among them, the fracturing holes 2-2 can be distributed in multiple rows in the longitudinal direction, and the fracturing holes 2-2 in adjacent rows are staggered. The number of fracturing holes 2-2 and the diameter of the fracturing holes are 32 mm, with a total of 12, arranged in two rows, and the axial angle between two adjacent fracturing holes 2-2 in the same row is 30°.

[0040] Among them, combined Fig.11 Several sealing rings 4-3 are fixedly connected to the outer wall of the inner casing 4-1. When the intelligent fracturing sleeve unit is in a closed state, that is, the inner casing 4-1 is in the initial position, at least three sealing rings 4-3 are distributed from top to bottom on the upper side of the fracturing hole 2-2, between the locking mechanism 3 and the position before the outer diameter of the inner casing 4-1 is reduced, and on the lower side of the first shoulder 2-3a.

[0041] For example Figure 4 , is the first embodiment of the locking mechanism 3:

[0042] The locking mechanism 3 may be a conventional shear-type pin, which is fixed on the lower casing 2-1 and the inner casing 4-1. When the inner casing 4-1 is subjected to downward downhole pressure, the shear-type pin breaks.

[0043] For example Figure 5 and 6 , Embodiments 2 and 3 of the locking mechanism 3:

[0044] For ease of description, it is stipulated that the inner end refers to the side facing the axis of the intelligent fracturing sleeve unit. The locking mechanism 3 includes a plug 3a, the inner end of the plug 3a is fixedly connected to the outer end of the compression spring 3b, and the inner end of the compression spring 3b is fixedly connected to a fixing member. Among them, a radial groove for installing the locking mechanism 3 is provided in the lower casing 2-1, so that the plug 3a is fixed in the lower casing 2-1, the compression spring 3b can be retracted in the lower casing 2-1, and the fixing member can also move radially in the radial groove. The outer diameter of the inner casing 4-1 is formed with a fixing member-shaped groove, and the fixing member is fixed in the groove. When the inner casing 4-1 is subjected to a downward force, the inner casing 4-1 will apply an additional component of force to the fixing member to move outward, and the compression spring 3b cannot keep the fixing member fixed in the groove. The compression spring 3b further contracts, causing the fixing member to retract into the lower casing 2-1, so that the lower casing 2-1 moves downward smoothly.

[0045] The locking member can be a wedge block 3c, and the inner end surface of the wedge block 3c is an inclined surface with a decreasing diameter from top to bottom. The locking member can also be a spherical ball 3d. This allows the inner sleeve 4-1 to move up and be re-engaged on the ball 3d. Similarly, the locking member can also be a double bevel body 4d, so that the upper and lower end surfaces of the inner end of the locking member are radially symmetrical inclined surfaces, and the upper side inclined surface has the same structure as the inclined surface of the wedge block 3c.

[0046] For example Figure 7 and 8 , Embodiments 4 and 5 of the locking mechanism 3:

[0047] The locking mechanism 3 can be an elastic spring 3e or a retaining spring 3f, which is made of a material with strong elasticity and toughness, such as a leaf spring. A special groove for the elastic spring is set on the outer wall of the inner casing 4-1, and the elastic spring 3e is locked in the special groove for the elastic spring of the inner casing 4-1 by screws or other means. The springs are evenly arranged in a circle on the same plane, with a number of 6-8, so that the intelligent fracturing sleeve will not be accidentally opened during cementing, well clearing and other operations.

[0048] Whether it is the elastic spring 3e or the clip spring 3f, the arrangement position can be as follows Figure 7 Same, it can also be Figure 8 The locking mechanism 3 is arranged in a radial groove formed near the lower sleeve 2-1 and the upper sleeve 1-1, and above the sealing ring between the two, so as to facilitate installation while meeting the sealing requirements. The grooves matched by the elastic spring 3e are all annular grooves. When initially installing the inner sleeve 4-1, it is necessary to use a tool to compress all the locking mechanisms 3 in the direction of the axis, and at the same time push the inner sleeve 4-1 downward into the lower sleeve 2-1. To facilitate the pushing in of the inner sleeve 4-1, the port of the lower sleeve 2-1 can be provided with an inclined surface. After the pushing in is completed, the locking mechanism 3 pops out in the direction away from the axis and is locked in the radial groove to complete the installation.

[0049] When the intelligent fracturing sleeve unit is opened, a downward force is applied to the inner casing 4-1. At this time, all the elastic springs 3e are compressed in the direction close to the axis. After reaching the critical pressure, the elastic springs 3e are completely compressed into the elastic spring dedicated groove on the inner casing 4-1, and the intelligent fracturing sleeve is disengaged and moves downward to open the fracturing hole 2-2.

[0050] Further explanation, combined with Fig. 9 and 10 The force-enhanced opening intelligent fracturing sleeve system also includes an intelligent label unit, which can adopt the existing technology, and it should satisfy that the intelligent label unit has an inactive position and an active position to detect that when the target sensing ring 1-2 is activated, the outer contour is changed, so that a part of the periphery moves relative to the rest, that is, the locking device 5-2 moves relative to the main body 5-1 of the intelligent label unit, so that it will be stuck in the inner casing 4-1 and cannot pass through the inner casing 4-1. When not activated, the outer contours overlap, allowing itself to pass freely through the inner casing 4-1. Once stuck, a seal will be generated. When the fluid pressure in the direction of the seal toward the wellhead increases, it can push itself to move to drive the inner casing 4-1 to open the fracturing hole 2-2. The movement of the locking device 5-2 can be moving along the inclined surface, and the moving direction is the direction of increasing the diameter of the inclined surface, so as to achieve expansion. The part that the locking device 5-2 is stuck can be an annular structure with an opening.

[0051] For example, a rotary expansion type smart tag for an intelligent fracturing completion sleeve mentioned in publication number CN118704934A can realize the above functions, and its annular seal 304 can be fixed on the inner casing 4-1 after expansion.

[0052] The initial shape of the main body 5-1 of the smart tag unit is a cannonball, and its outer diameter can freely pass through the upper casing 1-1, the lower casing 2-1 and the inner casing 4-1, and can reach the designated position by its own weight in a vertical well. In a horizontal well, pumping is required to push the main body 5-1 of the smart tag unit to the designated position. At the same time, the detection module of the main body 5-1 of the smart tag unit can detect the casing coupling and the induction ring 1-2 by itself, and make a judgment to determine whether the current position is the target position of the main body 5-1 of the smart tag unit. Because the wall thickness of the casing coupling is greater than the wall thickness of the casing, different magnetic field induction feedback will be generated, thereby automatically judging the number of couplings passed. Among them, the casing coupling is used to connect casings of different lengths to protect the wellbore and provide structural integrity, and every two adjacent casings are connected with a casing coupling.

[0053] A method of autonomous force enhancement that is enabled for the first time;

[0054] Step 1: Initially, the inner casing 4-1 is not blocked, the upper and lower ends are in a pressure balance state, and the locking mechanism 3 is not subjected to force. After the detection module of the smart tag unit body 5-1 detects the induction ring 1-2 of the target smart fracturing sleeve unit, the locking device 5-2 expands, thereby increasing the outer diameter of the smart tag unit body 5-1, and the smart tag unit body 5-1 is also locked at the third shoulder 4-2 of the smart fracturing sleeve unit and sealed;

[0055] Step 2: After the main body 5-1 of the smart tag unit is locked in place, the central channel of the inner casing 4-1 is blocked, resulting in relatively independent pressures on the upper and lower sides of the inner casing 4-1. Since the equivalent force-bearing area of ​​the upper end face of the inner casing 4-1 is larger than the equivalent force-bearing area of ​​the lower end face, after the pressures on the upper and lower ends are equal, the force on the upper end face of the inner casing 4-1 is greater than the force on the lower end face, generating a thrust that pushes the smart tag unit away from the wellhead. The smart tag unit pushes the inner casing 4-1, and the thrust is borne by the locking mechanism 3. After the ground pump truck presses to the limited pressure of the locking mechanism 3, the locking mechanism 3 can no longer be locked, and the inner casing 4-1 moves in the pumping direction relative to the locking mechanism 3, and the target smart fracturing sleeve unit can be opened. Repeat the above operation to complete step-by-step fracturing.

[0056] Among them, combined Fig.12, S1 represents the cross-sectional area of ​​the top of the inner sleeve 4-1, S2 represents the cross-sectional area of ​​the bottom of the inner sleeve 4-1, and since the outer diameter of the top of the inner sleeve 4-1 is larger than its outer diameter at the bottom, S1>S2. S3 represents the cross-sectional area of ​​the top center channel of the inner sleeve 4-1, and S4 represents the cross-sectional area of ​​the bottom center channel of the inner sleeve 4-1. S3 is similar to S4, satisfying S1+S2>S3+S4.

[0057] After the smart tag unit is locked in the inner casing 4-1, the central channel of the inner casing 4-1 is blocked, and the total equivalent force area of ​​the upper end face of the inner casing 4-1 is S1+S2, and the total equivalent force area of ​​the lower end face of the inner casing 4-1 is S3+S4. The formation pressures on the upper and lower ends of the inner casing are basically the same, so after the smart tag is locked, the inner casing 4-1 is subjected to a downward force as a whole.

[0058] Preferably, combined Fig.14 and 15 , and also includes a gas absorption unit 4-4 arranged in the annular cavity formed by the outer wall of the inner sleeve 4-1 and the lower sleeve 2-1; the gas absorption unit 4-4 includes an annular signal receiving device 4-4a, the annular signal receiving device 4-4 is above the annular cavity and fixedly connected to the inner sleeve 4-1, and a solid fuel 4-4e is fixedly connected to the outer wall of the annular signal receiving device 4-4a, and a cavity is formed between the solid fuel 4-4e and the annular signal receiving device 4-4a, for the signal generating device 4-4b, the ignition module 4-4c and the power supply module 4-4d to be placed, and the signal generating device 4-4b, the ignition module 4-4c and the power supply module 4-4d are fixedly connected to the annular signal receiving device 4-4a. The signal generating device 4-4b and the signal generating device 4-4b form a control module. After the smart label unit reaches the target position and is locked, the smart label unit sends a signal outward. After receiving the instruction, the annular signal receiving device 4-4a feeds back to the signal generating device 4-4b. The signal generating device 4-4b issues an instruction to start the ignition module 4-4c. The ignition module 4-4c ignites the solid fuel 4-4e, causing the solid fuel 4-4e to react with the air in the annular cavity and generate a solid product, thereby reducing the pressure in the annular cavity and causing the inner sleeve 4-1 to generate a downward thrust.

Claims

1. An intelligent fracturing sleeve unit comprises an outer sleeve, a fracturing hole (2-2) arranged on the outer sleeve, a locking mechanism (3) fixedly connected to the outer sleeve, a slideway arranged inside the outer sleeve, an inner sleeve (4-1) located in the slideway is slidably connected inside the outer sleeve, the inner sleeve (4-1) is locked by the locking mechanism (3), the inner sleeve (4-1) is used to block the fracturing hole (2-2), and an intelligent label unit can pass through the outer sleeve and the inner sleeve (4-1), and when the intelligent label unit expands, it can be locked and sealed in the inner sleeve (4-1).

2. According to the intelligent fracturing sleeve unit according to claim 1, an induction ring (1-2) is arranged on the outer casing or the inner casing (4-1).

3. According to the intelligent fracturing sleeve unit of claim 1, the outer casing comprises an upper casing (1-1), a lower casing (2-1) detachably connected to the lower end of the upper casing (1-1), the inner wall of the lower casing (2-1) is provided with a first diameter expansion section and a second diameter expansion section in sequence from top to bottom, the inner diameter of the first diameter expansion section is larger than that of the second diameter expansion section to form a first shoulder (2-3a) and a second shoulder (2-3b) from top to bottom, and the fracturing hole (2-2) is provided on the lower casing (2-1).

4. According to the intelligent fracturing sleeve unit of claim 3, the number of fracturing holes (2-2) is 32 mm in diameter, there are 12 fracturing holes (2-2) in total, arranged in two rows, and the angle between the axes of two adjacent fracturing holes (2-2) in the same row is 30°.

5. According to the intelligent fracturing sleeve unit of claim 3, at least three sealing rings (4-3) are arranged on the outer wall of the inner casing (4-1), and the three sealing rings (4-3) are distributed from top to bottom in sequence on the upper side of the fracturing hole (2-2), between the locking mechanism (3) and the position before the outer diameter of the inner casing (4-1) is reduced, and on the lower side of the first shoulder (2-3a).

6. According to the intelligent fracturing sleeve unit of claim 1, the locking mechanism (3) is a shear-type pin fixed on the outer sleeve and clamped on the inner sleeve (4-1); or, the locking mechanism (3) includes a plug (3a), the inner end of the plug (3a) is fixedly connected to the outer end of the compression spring (3b), the inner end of the compression spring (3b) is fixedly connected to a locking piece, and the outer sleeve is provided with a radial groove for installing the locking mechanism (3), so that the plug (3a) is fixedly connected to the inner wall of the outer sleeve, and the compression spring (3b) is fixedly connected to the inner wall of the inner sleeve. ) can be extended and retracted in the radial groove, the locking member can also move radially in the radial groove, and the locking member is locked on the inner sleeve (4-1); or, the locking mechanism (3) is an elastic spring leaf (3e) or a retaining spring (3f), the locking mechanism (3) is fixed on the inner sleeve (4-1), the locking mechanism (3) is locked in the radial groove formed between the lower sleeve (2-1) and the upper sleeve (1-1), or, the locking mechanism (3) is locked in the radial groove on the lower sleeve (2-1); When the locking mechanism (3) includes a locking member, the locking member is a wedge block (3c), a ball (3d) or a double bevel (4d).

7. An intelligent tag unit, used in conjunction with the intelligent fracturing sleeve unit according to claim 1, capable of detecting an induction ring (1-2). When the induction ring (1-2) is detected as a target, the intelligent tag unit can expand, lock and seal in an inner casing (4-1).

8. A force-enhanced opening intelligent fracturing sleeve system, comprising an intelligent fracturing sleeve unit and an intelligent label unit, wherein a third shoulder (4-2) protruding inward is formed on the inner wall of an inner casing 4-1, and the bottom of the intelligent label unit can be locked at the third shoulder (4-2) to close the inner casing (4-1).

9. According to the force-enhanced open-type intelligent fracturing sleeve system described in claim 8, after the intelligent label unit locks the inner casing (4-1), the central channel of the inner casing (4-1) is blocked, and at this time, the total equivalent force-bearing area of ​​the upper end face of the inner casing (4-1) is greater than the total equivalent force-bearing area of ​​the lower end face of the inner casing (4-1).

10. A method for opening a force-enhanced intelligent fracturing sleeve, comprising the following steps: Step 1: Initially, there is no blockage in the central channel of the intelligent fracturing sleeve unit, the upper end face and the lower end face of the intelligent fracturing sleeve unit are connected by the central channel, and the intelligent fracturing sleeve unit is in a pressure balance state; Step 2: After the smart tag unit is fixed on the target smart fracturing sleeve unit, the central channel of the target smart fracturing sleeve unit is blocked, resulting in relatively independent pressure inside the target smart fracturing sleeve unit and on both sides of the axis of the smart tag unit. Due to the blockage of the central channel inside the target smart fracturing sleeve unit, the equivalent force area close to the wellhead end is larger than the equivalent force area far from the wellhead end, so a thrust is generated to push the smart tag unit downward, and then the smart fracturing sleeve can be opened after the ground pump truck presses to reach the limit pressure of the locking mechanism (3).

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