A bridge seat integrated quick-mounting and setting tool combination

Abstract

This utility model relates to the technical field of bridge-and-shoot combined operation tools for oil and gas. Addressing the problems of existing disposable setting tools that require a connecting package to connect with the bridge plug, which involves cumbersome connection and disassembly steps, increases tubing length, and extends construction time, significantly reducing the efficiency of bridge-and-shoot combined operations, this invention provides a bridge-and-shoot integrated quick-assembly setting tool assembly. This assembly includes a setting component and a soluble bridge plug. The setting component comprises a push cylinder, a mandrel, and a pull rod. The upper and lower push cylinders of the push cylinder are sequentially connected to the bridge plug body of the soluble bridge plug. The mandrel and pull rod pass through the inner cavities of the upper and lower push cylinders, respectively, with the mandrel connected to both. The other end of the pull rod passes through the inner cavity of the bridge plug body and connects to it. The setting component directly connects to the soluble bridge plug, eliminating the need for an intermediate connecting structure and simplifying operation. Furthermore, pre-reserving the soluble ball of the soluble bridge plug at the bottom inner cavity of the lower push cylinder avoids secondary ball placement, saving considerable time.

Description

Technical Field

[0001] This utility model relates to the technical field of bridge-and-shoot combined operation tools for oil and gas, and more specifically, to a bridge-and-seat integrated quick-installation and sealing tool assembly. Background Technology

[0002] Bridge-perforation combined operation involves delivering a tool string of "perforating gun + setting tool + bridge plug" to the target formation in a horizontal well using a combination of cable delivery and hydraulic pumping, under the premise of effective communication between the wellbore and the formation. This completes the combined operation of bridge plug setting and multi-cluster perforation. Among these, the setting tool directly determines the success rate and reliability of bridge plug setting and is one of the key tools in bridge-perforation combined operation.

[0003] Currently, conventional cable bridge plug setting tools are commonly used in bridge-shooting combined operations both domestically and internationally. There is a growing demand for a single-use setting tool that is fully functional, easy to operate, and structurally simple. However, existing single-use setting tools have the same tail structure as conventional cable setting tools, requiring a connector to connect to the bridge plug. This connector must be disassembled after each operation and reinstalled before the next. Furthermore, the connector includes a thrust cylinder, adjusting joints, and other parts, making assembly, connection, and disassembly cumbersome. This also increases the length of the cable string, extending construction time and significantly reducing the efficiency of bridge-shooting combined operations.

[0004] Therefore, there is an urgent need to provide a bridge-seat integrated quick-installation setting tool combination that can be directly connected to the bridge plug, is easy to use once, and is simple and quick to operate, based on the structural principle of the setting tool. Utility Model Content

[0005] The purpose of this invention is to solve the problems of existing disposable setting tools, which require a connecting package to connect with the bridge plug. The connection and disassembly of the connecting package are cumbersome, increase the length of the tubing, increase construction time, and significantly reduce the efficiency of bridge-shooting combined construction. This invention provides a bridge-seat integrated quick-installation setting tool assembly that can directly connect with the bridge plug, is easy to use once, and offers simple and rapid operation.

[0006] This utility model is achieved through the following technical solution: a bridge-seat integrated quick-installation setting tool assembly, including a setting assembly; the setting tool assembly further includes a soluble bridge plug, the soluble bridge plug including a bridge plug body and a soluble ball; the setting assembly includes a push cylinder, a mandrel and a pull rod, the push cylinder including an upper push cylinder and a lower push cylinder, the upper push cylinder, the lower push cylinder and the bridge plug body are connected in sequence; the mandrel passes through the inner cavity of the upper push cylinder, the position of the mandrel near its end is connected to one end of the upper push cylinder by a shear pin, the other end of the mandrel is detachably connected to one end of the pull rod, the other end of the pull rod passes through the inner cavity of the bridge plug body and is detachably connected to the bridge plug body, the soluble ball is reserved in the inner bottom of the lower push cylinder, and a ball seat is provided at one end of the bridge plug body near the lower push cylinder.

[0007] Preferably, a shear nut is provided at the end of the pull rod away from the spindle.

[0008] Preferably, the end of the mandrel near the pull rod extends into the inner cavity of the lower push cylinder and has a first receiving cavity, and the end of the pull rod near the mandrel is inserted into the first receiving cavity.

[0009] Preferably, the seat assembly further includes a positioning ring, which is detachably connected to the end of the upper push cylinder away from the lower push cylinder.

[0010] Preferably, the end of the spindle away from the pull rod extends into the inner cavity of the igniter adapter and has a second receiving cavity, which is used to accommodate the main charge propellant column.

[0011] Preferably, the lower push cylinder has a groove and a damping retaining ring at one end near the upper push cylinder, and the groove is used to assemble the damping retaining ring.

[0012] Preferably, the bridge seat integrated quick-installation sealing tool assembly further includes multiple O-rings, which are disposed between the upper push cylinder and the positioning ring, between the upper push cylinder and the mandrel, and between the positioning ring and the mandrel.

[0013] Preferably, the outer wall surface of the bridge plug body is provided with a plurality of slip teeth at intervals along its own length direction, and a rubber sleeve is fitted on the outer wall surface of the bridge plug body above the slip teeth.

[0014] The technical solution of this utility model has the following beneficial effects:

[0015] (1) Compared with the prior art, the setting assembly of this setting tool kit is directly connected to the soluble bridge plug, eliminating the intermediate connection structure. It is easy to operate during use, and all parts are disposable. Compared with the prior art, it avoids the process of disassembling and adjusting the joint and pusher after each operation. Moreover, by reserving a soluble ball in the lower pusher, the soluble ball will naturally fall into the bridge plug body to achieve sealing after the tool is set, thereby avoiding secondary ball dropping and saving a lot of time. When it is necessary to restore the flow of fluid in the well, the soluble bridge plug can dissolve on its own after fracturing, without the need for drilling and grinding to remove it, which can also shorten the construction period.

[0016] (2) The pusher and spindle are separate components compared to the existing structure, which makes the processing simple and greatly reduces the cost.

[0017] (3) Because the intermediate connecting structure is eliminated, the overall length of the tool is shortened, which can increase the perforation range.

[0018] (4) A groove structure is added to the lower pusher section for mounting the damping retainer ring. When the gun string enters the well and reaches the horizontal section, the retainer ring is stressed to facilitate pumping.

[0019] (5) The push cylinder has a split structure, which avoids the problem that the seal ring is too deep inside the push cylinder, making it impossible to put your hand inside the push cylinder during manual assembly, and the seal ring is difficult to assemble without reliable auxiliary tools. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of the integrated bridge seat quick-installation sealing tool assembly in Embodiment 1 of this utility model;

[0021] Figure 2 This is a cross-sectional structural schematic diagram of the bridge seat integrated quick-installation seat sealing tool assembly in Embodiment 1 of this utility model;

[0022] Figure 3 for Figure 2 A magnified structural diagram of part A in the middle.

[0023] Reference numerals: 1-Setting assembly, 11-Mandrel, 12-Pull rod, 13-Upper pusher, 14-Lower pusher, 15-Shear pin, 16-Positioning ring, 17-Locking spring, 2-Soluble bridge plug, 21-Bridge plug body, 21a-Ball seat, 22-Soluble ball, 3-Shear nut, 4-Main charge cartridge, 5-Damping retaining ring, 6-O-ring seal, 7-Vessel teeth. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings and specific embodiments. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. The components of the embodiments of the present invention described and shown herein can generally be arranged and designed in various different configurations.

[0025] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0027] Example 1

[0028] like Figures 1 to 3 As shown, this embodiment provides a bridge seat integrated quick-installation setting tool assembly, including a setting assembly 1; the setting tool assembly also includes a soluble bridge plug 2, which includes a bridge plug body 21 and a soluble ball 22; the setting assembly 1 includes a push cylinder, a mandrel 11 and a pull rod 12, the push cylinder includes an upper push cylinder 13 and a lower push cylinder 14, the upper push cylinder 13, the lower push cylinder 14 and the bridge plug body 21 are connected in sequence, the lower end of the upper push cylinder 13 and one end of the lower push cylinder 14 are screwed together, and the other end of the lower push cylinder 14 abuts against the bridge plug body 21; the mandrel 11 passes through the upper push cylinder. The inner cavity of 13, the pull rod 12 passes through the inner cavity of the lower push cylinder 14, one end of the spindle 11 is threadedly connected to the igniter adapter, the position of the spindle 11 near the end is connected to the upper end of the upper push cylinder 13 by a shear pin 15, the other end of the spindle 11 is connected to one end of the pull rod 12 by a locking spring 17, the other end of the pull rod 12 passes through the inner cavity of the bridge plug body 21 and is temporarily fixed to the bridge plug body 21, the soluble ball 22 is reserved in the inner bottom of the lower push cylinder 14, and a ball seat 21a is opened at one end of the bridge plug body 21 near the lower push cylinder 14.

[0029] Compared with existing technologies, the setting component 1 of this setting tool assembly is directly connected to the soluble bridge plug 2, eliminating the need for intermediate connecting structures. This simplifies operation, and all parts are disposable, avoiding the need to disassemble and adjust the joints and pusher after each operation. Furthermore, by pre-reserving a soluble ball 22 inside the lower pusher 14, the soluble ball 22 naturally falls into the ball seat 21a of the bridge plug body 21 after the tool is set, thus avoiding secondary ball deployment and saving significant time. When it is necessary to restore downhole fluid flow, the soluble bridge plug 2 can dissolve autonomously after fracturing, eliminating the need for drilling and grinding removal, further shortening the operation period.

[0030] Furthermore, the push cylinder and mandrel 11 are separate components compared to existing structures, simplifying processing and significantly reducing costs. Moreover, by eliminating the intermediate connecting structure, the overall length of the tool is shortened, increasing the perforation range. Previously, the mandrel 11 was very long, with an adjustment connector at the lower end. In contrast, the mandrel 11 designed in this invention is shorter, with its lower end directly connected to one end of the pull rod 12, and the other end of the pull rod 12 connected to the bridge plug body 21.

[0031] In this embodiment, the pull rod 12 is provided with a shear nut 3. The end of the pull rod 12 away from the spindle 11 is connected to the bridge plug body 21 through the shear nut 3. The shear nut 3 is temporarily fixed, and when the pressure is applied to the set value, the shear nut 3 is sheared, and the pull rod 12 is separated from the bridge plug body 21, which facilitates the retraction of the setting assembly.

[0032] In this embodiment, the end of the spindle 11 near the pull rod 12 extends into the inner cavity of the lower push cylinder 14 and has a first receiving cavity, and the end of the pull rod 12 near the spindle 11 is inserted into the first receiving cavity.

[0033] In this embodiment, the setting assembly 1 further includes a positioning ring 16, which is threadedly connected to the end of the upper push cylinder 13 away from the lower push cylinder 14, and a shear pin 15 is connected between the positioning ring 16 and the mandrel 11.

[0034] In this embodiment, the end of the spindle 11 away from the pull rod 12 extends into the inner cavity of the igniter adapter and has a second receiving cavity, which is used to accommodate the main charge column 4.

[0035] In this embodiment, a groove is provided at one end of the lower pusher cylinder 14 near the upper pusher cylinder 13 and a damping retainer ring 5 is provided. The groove is used to assemble the damping retainer ring 5. When the tool enters the well and reaches the horizontal section, the damping retainer ring 5 is subjected to force to facilitate pumping.

[0036] In this embodiment, the bridge seat integrated quick-installation sealing tool assembly also includes multiple O-rings 6. The O-rings 6 are positioned between the upper push cylinder 13 and the positioning ring 16, between the upper push cylinder 13 and the spindle 11, between the positioning ring 16 and the spindle 11, and between the spindle 11 and the igniter adapter. The push cylinder has a split structure, avoiding the problem that the seals are too deep inside the push cylinder, making manual assembly difficult due to the inability to reach inside and the lack of reliable auxiliary tools. This simplifies the assembly operation.

[0037] In this embodiment, the outer wall surface of the bridge plug body 21 is provided with a plurality of slip teeth 7 at intervals along its own length direction, and a rubber sleeve (not shown) is fitted on the upper part of the slip teeth 7 on the outer wall surface of the bridge plug body 21. The slip teeth are used to engage with the casing. The rubber sleeve (not shown) is used to seal with the well wall, ensuring that oil and gas flow is stopped, and can reduce the friction between the bridge plug body 21 and the well wall.

[0038] Operating principle: This bridge-and-seat integrated quick-setting and sealing tool assembly is used in bridge-and-shoot operations. It connects the soluble bridge plug 2 to the cable, and with the ground powered on, the assembly is placed into the well and gradually advanced. After reaching the predetermined layer, the igniter in the ignition assembly is detonated via the cable, igniting the main charge 4. The gas pressure generated by the combustion of the main charge 4 pushes the upper pusher cylinder 13 in the sealing assembly 1 downward, thereby driving the lower pusher cylinder 14 to move, achieving the setting of the soluble bridge plug 2. During this process, the shear pin 15 between the mandrel 11 and the upper pusher cylinder 13 breaks, and the mandrel 11 and the pull rod 12 do not move. By pre-reserving a soluble ball 22 inside the lower pusher cylinder 14, the soluble ball 22 is lowered into the well along with the tool. The upper pusher cylinder 13 and lower pusher cylinder 14 move downwards together, pushing and compressing the bridge plug body 21. As the main propellant burns, the internal pressure of the mandrel 11 continuously increases, and the thrust also increases. When the thrust reaches the shearing force of the shear nut 3, the shear nut 3 is sheared, and the pull rod 12 separates from the bridge plug body 21. At this point, when the tool is lifted, the bridge plug body 21 is fixed in the well, and the soluble ball 22 falls directly onto the bridge plug body 21 to achieve sealing, reducing the need for a separate ball-dropping process and saving construction time. This tool combination achieves higher reliability in setting and releasing the soluble bridge plug 2, and is more convenient to use and maintain.

[0039] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A bridge seat integrated quick-installation sealing tool assembly, characterized in that, Includes the setting assembly (1); The setting tool assembly also includes a soluble bridge plug (2), which includes a bridge plug body (21) and a soluble ball (22); The setting assembly (1) includes a push cylinder, a mandrel (11) and a pull rod (12). The push cylinder includes an upper push cylinder (13) and a lower push cylinder (14). The upper push cylinder (13), the lower push cylinder (14) and the bridge plug body (21) are connected in sequence. The mandrel (11) passes through the inner cavity of the upper push cylinder (13), and the pull rod (12) passes through the inner cavity of the lower push cylinder (14). The mandrel (11) is connected to one end of the upper push cylinder (13) near its end by a shear pin (15). The other end of the mandrel (11) is detachably connected to one end of the pull rod (12). The other end of the pull rod (12) passes through the inner cavity of the bridge plug body (21) and is detachably connected to the bridge plug body (21). The soluble ball (22) is reserved in the inner bottom of the lower push cylinder (14). A ball seat (21a) is provided at one end of the bridge plug body (21) near the lower push cylinder (14).

2. The bridge seat integrated quick-installation sealing tool assembly according to claim 1, characterized in that, A shear nut (3) is provided at the end of the pull rod (12) away from the spindle (11).

3. The bridge seat integrated quick-installation sealing tool assembly according to claim 1, characterized in that, The end of the spindle (11) near the pull rod (12) extends into the inner cavity of the lower push cylinder (14) and has a first receiving cavity. The end of the pull rod (12) near the spindle (11) is inserted into the first receiving cavity.

4. The bridge seat integrated quick-installation sealing tool assembly according to claim 1, characterized in that, The seat assembly (1) further includes a positioning ring (16), which is detachably connected to the end of the upper push cylinder (13) away from the lower push cylinder (14).

5. The bridge seat integrated quick-installation sealing tool assembly according to claim 3, characterized in that, The end of the spindle (11) away from the pull rod (12) extends into the inner cavity of the igniter adapter and has a second receiving cavity, which is used to accommodate the main charge column (4).

6. The bridge seat integrated quick-installation sealing tool assembly according to any one of claims 1 to 5, characterized in that, The lower push cylinder (14) has a groove and a damping retaining ring (5) at one end near the upper push cylinder (13). The groove is used to assemble the damping retaining ring (5).

7. The bridge seat integrated quick-installation sealing tool assembly according to claim 4, characterized in that, The bridge seat integrated quick-installation seat sealing tool assembly also includes multiple O-rings (6), which are disposed between the upper push cylinder (13) and the positioning ring (16), between the upper push cylinder (13) and the mandrel (11), and between the positioning ring (16) and the mandrel (11).

8. The bridge seat integrated quick-installation sealing tool assembly according to claim 1, characterized in that, The outer wall of the bridge plug body (21) is provided with a plurality of slip teeth (7) spaced apart along its own length direction, and a rubber sleeve is fitted on the upper part of the slip teeth (7) on the outer wall of the bridge plug body (21).

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