Horizontal well fracturing packer

Abstract

The utility model relates to the technical field of packers, in particular to a horizontal well fracturing packer. The horizontal well fracturing packer comprises butt joints, the number of the butt joints is two, butt joint pipes which are fixedly connected are installed at the ends of the two butt joints, the same adapter pipe which is fixedly connected is installed at the opposite ends of the two butt joint pipes, and the adapter pipe is sleeved with a telescopic assembly. According to the horizontal well fracturing packer, through sliding connection of the sliding barrels on the two sides in the telescopic assembly, in the later use process, when gas is injected into the rubber barrel to enable the rubber barrel to expand, the rubber barrel can pull the sliding barrels on the two sides, double-side sliding is achieved, and therefore deformation of the rubber barrel can be more uniform.

Description

TECHNICAL FIELD

[0001] The utility model relates to packer technical field especially relates to a horizontal well fracturing packer. BACKGROUND

[0002] Horizontal well fracturing packer is the equipment that controls and isolates different strata and fluid in horizontal well drilling and fracturing process, is used for increasing oilfield or natural gas field productivity and improving recovery, and common fracturing packer includes ball seat type, hydraulic anchor type, self-sealing type, sliding sleeve type etc.

[0003] The prior art patent with Chinese patent publication No. CN220955526U discloses a horizontal well fracturing packer, and the content recorded in the description book shows that when the rubber tube is expanded under the action force, the movement mode is unilateral contraction, and the unilateral contraction mode often increases the probability of damage of the contraction side of the rubber tube due to uneven contraction.

[0004] Therefore, it is necessary to provide a new horizontal well fracturing packer to solve the above technical problems. UTILITY MODEL CONTENT

[0005] To solve the above technical problems, the utility model provides a horizontal well fracturing packer.

[0006] The horizontal well fracturing packer provided by the utility model comprises butt joints, the butt joints are provided with two, fixedly connected butt pipes are arranged at the ends of the two butt joints, the opposite ends of the two butt pipes are provided with a same fixedly connected adapter pipe, and an extension assembly is arranged outside the adapter pipe.

[0007] The extension assembly comprises sliding cylinders, the sliding cylinders are symmetrically arranged on the two butt pipes, the inner walls of the sliding cylinders are slidably connected with the outer walls of the butt pipes, and a same rubber tube is fixedly arranged between the two sliding cylinders.

[0008] Preferably, fixedly connected sliding rings are arranged outside the sliding cylinders, the inner walls of the sliding rings are slidably connected with the outer walls of the corresponding butt pipes, and slidingly connected guide rings are arranged outside the sliding rings.

[0009] Preferably, the guide rings are fixedly arranged on the outer walls of the corresponding butt pipes, and a plurality of grooves for slidingly guiding the sliding rings are formed in the inner walls of the guide rings.

[0010] Preferably, positioning holes are formed in the outer walls of the guide rings in a symmetrical manner, two symmetrically arranged limiting half rings are arranged outside a same guide ring, and the two limiting half rings on the same guide ring are fixedly connected through bolts.

[0011] Preferably, the limiting half ring is internally provided with a fixedly connected positioning block, the outer wall of the positioning block abuts against the inner wall of the positioning hole, and the inner wall of the limiting half ring close to one end of the sliding cylinder abuts against and slidably connects with the outer wall of the corresponding sliding cylinder.

[0012] Preferably, the outer walls of the two butt pipes are each sleeved with a fixedly connected supporting ring, auxiliary rods are arranged between the two supporting rings, the two ends of the auxiliary rods are each provided with a fixedly connected mounting block, and the mounting block is fixedly connected with the supporting ring through bolts.

[0013] Preferably, the adapter pipe is internally provided with a plurality of uniformly distributed through holes.

[0014] Compared with the related art, the horizontal well fracturing packer has the following beneficial effects:

[0015] 1、The sliding connection of the two sliding cylinders in the telescopic assembly can pull the sliding cylinders on both sides when inflating the rubber tube to make it expand, realize bilateral sliding, and make the deformation of the rubber tube more uniform.

[0016] 2、The rubber tube in the utility model is slidably installed by the sliding cylinder, and when the rubber tube is damaged in the subsequent use process, the sliding cylinder can be slid out of the guide ring, and the connection between the adapter pipe and the butt pipe is disconnected, so that the rubber tube can be disassembled, and the worn rubber sleeve can be replaced independently. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 The structure schematic view of a preferred embodiment of the horizontal well fracturing packer provided by the utility model;

[0018] Figure 2 The structure schematic view of the telescopic assembly is shown in the figure. Figure 1 The structure schematic view of the telescopic assembly is shown in the figure.

[0019] Figure 3 The partial cross-sectional structure schematic view of the telescopic assembly is shown in the figure. Figure 1 The partial cross-sectional structure schematic view of the telescopic assembly is shown in the figure.

[0020] Figure 4 The structure schematic view of the limiting half ring is shown in the figure. Figure 1 The structure schematic view of the limiting half ring is shown in the figure.

[0021] Figure 5 The structure schematic view of the adapter pipe is shown in the figure. Figure 1 The structure schematic view of the adapter pipe is shown in the figure.

[0022] Figure 6 The structure schematic view of the adapter pipe is shown in the figure. Figure 1 The structure schematic view of the adapter pipe is shown in the figure.

[0023] Figure 7 For Figure 1 Part cross-sectional structure diagram of the part connected by the butt joint pipe and the telescopic assembly.

[0024] Reference signs in the figure: 1, butt joint; 2, butt joint pipe; 3, adapter pipe; 31, through hole; 4, telescopic assembly; 41, sliding cylinder; 411, rubber cylinder; 42, sliding ring; 43, guide ring; 431, positioning hole; 5, limiting half ring; 51, positioning block; 6, supporting ring; 7, auxiliary rod; 71, mounting block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical scheme and advantages of the utility model more clear and obvious, the following will be further described in detail in combination with the drawings and examples. It should be understood that the specific examples described here are only used to explain the utility model, and are not used to limit the utility model.

[0026] The specific implementation of the utility model will be described in detail in combination with specific examples.

[0027] Please refer to Figures 1 to 7 The horizontal well fracturing packer provided by the utility model embodiment includes: a butt joint 1.

[0028] In the embodiment of the utility model, please refer to Figures 1 to 7 The butt joint 1 is provided with two, the end of the two butt joints 1 is provided with a fixedly connected butt joint pipe 2, the opposite end of the two butt joint pipes 2 is provided with a same fixedly connected adapter pipe 3, and the outside of the adapter pipe 3 is provided with a telescopic assembly 4; the telescopic assembly 4 includes a sliding cylinder 41, the sliding cylinder 41 includes two and is symmetrically distributed on the two butt joint pipes 2, the inner wall of the sliding cylinder 41 is slidably connected with the outer wall of the butt joint pipe 2, and a same rubber cylinder 411 is fixedly installed between the two sliding cylinders 41, and a plurality of uniformly distributed through holes 31 are formed in the inside of the adapter pipe 3.

[0029] It should be noted that: since the rubber cylinder 411 in the telescopic assembly 4 is fixedly connected with the two sliding cylinders 41, and the sliding cylinder 41 is slidably connected through the sliding ring 42, in the subsequent use process, when the inside of the rubber cylinder 411 is injected with gas to make it expand, the rubber cylinder 411 can pull the two sliding cylinders 41 and the sliding ring 42, realize bilateral sliding, and thus the deformation of the rubber cylinder 411 is more uniform, and compared with unilateral sliding, the probability of damage of the rubber cylinder 411 due to uneven stress on both sides can be reduced;

[0030] The specific inflation process of the rubber tube 411 is that when high-pressure gas is injected into the rubber tube 411 through the through hole 31 in the adapter pipe 3, the rubber tube 411 will spread and inflate outward, i.e., away from the center of the adapter pipe 3, as the gas pressure in the rubber tube 411 increases, so that the outer diameter of the rubber tube 411 can be increased, and in the late stage of the inflation of the rubber tube 411, when the force required for continuous inflation is greater than the friction force between the end and the sliding ring 42 and the adapter pipe 2 and the guide ring 43, the sliding ring 42 will be pulled to slide along the guide ring 43, and when the sliding ring 42 moves to abut against the inner end of the limiting half ring 5, the rubber tube 411 will continue to inflate as the gas pressure continues to be injected, until the internal pressure of the rubber tube 411 reaches a set value, so that the rubber tube 411 is completely inflated, and then the gas injection is stopped to realize the sealing of the pipeline.

[0031] In the embodiment of the utility model, please refer to Figures 1 to 7 The outer part of the sliding cylinder 41 is provided with a fixedly connected sliding ring 42, the inner wall of the sliding ring 42 is slidably connected with the outer wall of the corresponding adapter pipe 2, the outer part of the sliding ring 42 is provided with a slidably connected guide ring 43, the guide ring 43 is fixedly sleeved on the outer wall of the corresponding adapter pipe 2, a plurality of recesses for slidingly guiding the sliding ring 42 are formed in the inner wall of the guide ring 43, a plurality of positioning holes 431 are formed in the outer wall of the guide ring 43 in a symmetrical manner, two symmetrical limiting half rings 5 are sleeved on the outer part of the same guide ring 43, and the two limiting half rings 5 on the same guide ring 43 are fixedly connected through bolts, a fixedly connected positioning block 51 is arranged in the inner part of the limiting half ring 5, the outer wall of the positioning block 51 abuts against the inner wall of the positioning hole 431, and the inner wall of the limiting half ring 5 close to one end of the sliding cylinder 41 abuts against and slidably connects with the outer wall of the corresponding sliding cylinder 41.

[0032] It should be noted that through the abutment of the positioning block 51 and the positioning hole 431, the quick positioning and installation of the two limiting half rings 5 can be realized when the limiting half ring 5 is installed, so that the two connected limiting half rings 5 can smoothly form a complete limiting ring, thereby realizing the blocking of the sliding track of the sliding ring 42 in the later stage, so that the sliding ring 42 can be stably located in the guide ring 43, and because the recesses are formed in the inner part of the guide ring 43, the sliding track of the sliding ring 42 can be guided by the recesses when the sliding ring 42 slides, so that the phenomenon of rotation of the sliding ring 42 in the guide ring 43 can be avoided, thereby making the inflation track of the rubber tube 411 more stable and reducing the phenomenon of distortion of the rubber tube 411.

[0033] In the embodiment of the utility model, please refer to Figures 1 to 7The outer wall of the two butt pipes 2 is sleeved with a fixedly connected supporting ring 6, the auxiliary rod 7 is arranged between the two supporting rings 6, the two ends of the auxiliary rod 7 are fixedly connected with the mounting blocks 71, and the mounting blocks 71 are fixedly connected with the supporting rings 6 through bolts.

[0034] It should be noted that: through the setting of the auxiliary rod 7, the auxiliary rod 7 can be erected and connected before the rubber tube 411 is disassembled and installed, so that the positions of the two butt pipes 2 remain stable after the adapter pipe 3 is disassembled from between the butt pipes 2, and then when the replacement of the rubber tube 411 is completed, the alignment of the adapter pipe 3 and the butt pipe 2 is more convenient.

[0035] The working principle of the horizontal well fracturing packer is as follows:

[0036] When the device is used, the device is first installed in the wellbore, and then the device is pressurized, and the pressurized gas fills the rubber tube 411 through the through hole 31, so that the rubber tube 411 expands until the outer wall of the expanded rubber tube 411 contacts the well wall to realize sealing, and in the use process, the two ends of the rubber tube 411 are connected with the fixed sliding tube 41, and the sliding tube 41 is slidingly installed, so that when the rubber tube 411 expands, the sliding tube 41 at both ends is driven to slide synchronously, and the sliding contraction on both sides is realized, so that the rubber tube 411 can be more uniform in the use process.

[0037] And because the outer wall of the rubber tube 411 will be worn due to friction in the use process, when the rubber tube 411 needs to be replaced later, the auxiliary rod 7 can be taken out after the device is taken out, and the auxiliary rod 7 is fixedly connected between the mounting block 71 and the supporting ring 6, then the bolts connecting the limiting half ring 5 are loosened to disassemble the limiting half ring 5, so that the sliding track of the sliding tube 41 is limited, then the sliding tube 41 is pushed to make it come out from the corresponding sliding ring 42, and when the sliding tube 41 slides out, the adapter pipe 3 inside the rubber tube 411 is exposed;

[0038] Then the bolts between the adapter pipe 3 and the butt pipe 2 are loosened to disassemble the adapter pipe 3, so that the two butt pipes 2 can be smoothly separated, at this time the sliding tube 41 and the rubber tube 411 can be taken out from the gap between the two butt pipes 2, and then the rubber tube 411 can be disassembled and replaced by the worker.

[0039] The above are only embodiments of the present application, and do not limit the patent scope of the present application, and any equivalent structure or equivalent process transformation using the content of the present application specification and drawings, or direct or indirect application in other related technical fields, are also included in the patent protection scope of the present application.

Claims

1. A horizontal well fracturing packer, characterized in that, Include: The butt joint (1) is provided with two, two end of the butt joint (1) is installed with fixed connection butt joint pipe (2), two opposite ends of the butt joint pipe (2) are installed with the same fixed connection adapter pipe (3), and the outside of the adapter pipe (3) is sleeved with telescopic assembly (4); The telescopic assembly (4) includes a sliding cylinder (41), the sliding cylinder (41) includes two and symmetrically distributed on two butt joint pipes (2), the inner wall of the sliding cylinder (41) is in sliding connection with the outer wall of the butt joint pipe (2), and the same rubber cylinder (411) is fixedly installed between the two sliding cylinders (41).

2. The horizontal well fracturing packer of claim 1, wherein, The outer wall of the sliding cylinder (41) is provided with a fixedly connected sliding ring (42), the inner wall of the sliding ring (42) is in sliding connection with the outer wall of the corresponding butt joint pipe (2), and the outer wall of the sliding ring (42) is sleeved with a slidingly connected guide ring (43).

3. The horizontal well fracturing packer of claim 2, wherein, The guide ring (43) is fixedly sleeved on the outer wall of the corresponding butt joint pipe (2), and the inner wall of the guide ring (43) is provided with a plurality of recesses for slidingly guiding the sliding ring (42).

4. The horizontal well fracturing packer of claim 3, wherein, The outer wall of the guide ring (43) is provided with symmetrically distributed positioning holes (431), the same guide ring (43) is sleeved with two symmetrically distributed limiting half rings (5) on the outside, and the two limiting half rings (5) on the same guide ring (43) are fixedly connected by bolts.

5. The horizontal well fracturing packer of claim 4, wherein, The limiting half ring (5) is internally provided with a fixedly connected positioning block (51), the outer wall of the positioning block (51) abuts against the inner wall of the positioning hole (431), and the inner wall of the limiting half ring (5) close to the one end of the sliding cylinder (41) abuts against and is in sliding connection with the outer wall of the corresponding sliding cylinder (41).

6. The horizontal well fracturing packer of claim 1, wherein, The outer wall of the two butt joint pipes (2) is sleeved with a fixedly connected support ring (6), the two support rings (6) are arranged between the two support rings (6), and the auxiliary rod (7) is arranged between the two support rings (6).

7. The horizontal well fracturing packer of claim 1, wherein, The inside of the adapter pipe (3) is provided with a plurality of uniformly distributed through holes (31).

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