Fracturing packer

Abstract

The utility model discloses a fracturing packer which comprises two pipe columns, a packer body is installed between the pipe columns, sliding grooves are formed in the tops and the bottoms of the two sides of the packer body, sliding blocks are installed in the sliding grooves in a sliding mode, one ends of the sliding blocks extend into the sliding grooves, and the other ends of the sliding blocks extend out of the sliding grooves. Fixing rods are fixedly mounted at the ends, extending out of the sliding grooves, of the sliding blocks, fixing grooves are formed in the top and the bottom of the tubular column, one ends of supporting rods are fixedly mounted on the two sides of the top and the two sides of the bottom of the packer, first rotating shafts are rotationally mounted at the other ends of the supporting rods, and rotating rods are rotationally mounted on the first rotating shafts. The fixing rods capable of moving up and down are arranged on the two sides of the packer, so that when a tubular column is connected, fixed connection can be carried out, the squeezed tubular column and the packer are buffered, stress transmission at the connecting position of the tubular column is greatly weakened, and the sealing effect and the protection effect of the whole device are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of packers, in particular to a fracturing packer. Background Art

[0002] A packer generally refers to a downhole tool connected to a downhole string and used to seal the annular space between the tubing and the casing of an oil and gas well or the open hole wall. Packers are classified into expanding type, compression type, self-sealing type, wedge type, self-expanding type, and combined type, etc. Among them, a fracturing packer is a compression type unidirectional slip-supported rotary setting and pulling-to-release packer, which mainly consists of an upper joint, a sealing rubber cylinder, a slip assembly, a centralizer assembly, a central tube, a T-shaped hook, a lower joint, etc.

[0003] However, there are still certain problems when the existing packers are in use:

[0004] When the existing fracturing packer is in use under the prior art, the sealing ring at its connection is often an integrally structured ring shape. There are easily gaps at its end face during assembly, and the assembly part is directly exposed to the outside without protection. When subjected to external force impact, the assembly part is relatively fragile and easily deformed and damaged.

[0005] In view of the above problems, innovative designs are made on the basis of the original packer. Content of the Utility Model

[0006] The purpose of the utility model is to provide a fracturing packer to solve the problems raised in the above background art.

[0007] To achieve the above purpose, the utility model provides the following technical solution: A fracturing packer, comprising two pipe strings, a packer is installed in the middle of the pipe strings. Sliding grooves are respectively opened at the top and bottom on both sides of the packer. A sliding block is slidably installed in the sliding groove. One end of the sliding block extends into the sliding groove, and the other end of the sliding block extends out of the sliding groove. A fixing rod is fixedly installed at the end of the sliding block extending out of the sliding groove. Fixing grooves are respectively opened at the top and bottom of the pipe strings;

[0008] One ends of support rods are respectively fixedly installed on both sides of the top and bottom of the packer. The other ends of the support rods are rotatably installed with a first rotating shaft, and a rotating rod is rotatably installed on the first rotating shaft;

[0009] A moving groove is opened on one side of the bottom of the rotating rod. A moving block is slidably installed in the moving groove. One end of the moving block extends into the moving groove, and the other end of the moving block extends out of the moving groove. A second rotating shaft is rotatably installed at the end of the moving block extending out of the moving groove, and the second rotating shaft is rotatably connected to the top of the fixing rod;

[0010] One end of the rotating rod is rotatably installed with a third rotating shaft, a telescopic rod is rotatably installed on the third rotating shaft, and a sleeve rod is sleeved on the telescopic rod;

[0011] On both inner walls of the top of the sleeve rod, limiting holes are provided, and limiting rods are slidably installed in the limiting holes. A plurality of limiting grooves are provided at the top of the telescopic rod.

[0012] Preferably, the fixed rod is adapted to the fixed groove.

[0013] Adopting the above technical solution, the fixed rod is used to fix the packer.

[0014] Preferably, one end of a first spring is fixedly installed on the top of the sliding block, and the other end of the first spring is fixedly connected to the inner wall of the top of the sliding groove.

[0015] Adopting the above technical solution, the first spring is used to drive the moved sliding block to reset.

[0016] Preferably, the moving block is located on the side of the bottom of the rotating rod close to the fixed rod.

[0017] Adopting the above technical solution, the moving block drives the fixed rod to move upward.

[0018] Preferably, the limiting rod is adapted to the limiting groove.

[0019] Adopting the above technical solution, the limiting rod is used to fix the telescopic rod and the sleeve rod.

[0020] Preferably, a thin rod is fixedly installed on one side of the limiting rod, and one end of a second spring is fixedly installed at the bottom of the thin rod, and the other end of the second spring is fixedly connected to the top of the sleeve rod.

[0021] Adopting the above technical solution, the second spring is used to drive the moved limiting rod to reset.

[0022] Compared with the prior art, the beneficial effects of the present utility model are:

[0023] On both sides of the packer, there are fixed rods that can move up and down, which can be fixedly connected during the connection of the pipe string, buffer the squeezed pipe string and the packer, greatly weaken the stress transmission at the pipe string connection, and the overall equipment improves the sealing effect and the protection effect. Brief Description of the Drawings

[0024] Figure 1 It is a front view of the structure of the present utility model;

[0025] Figure 2 It is a schematic view of part A of the structure of the present utility model;

[0026] Figure 3 It is a schematic view of part B of the structure of the present utility model.

[0027] In the figure: 1, pipe string; 2, packer; 3, sliding groove; 4, sliding block; 5, fixed rod; 6, fixed groove; 7, support rod; 8, rotating rod; 9, moving groove; 10, moving block; 11, sleeve rod; 12, telescopic rod; 13, limiting hole; 14, limiting rod; 15, limiting groove; 16, thin rod. Detailed implementation manners

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0029] Please refer to Figures 1-3 , the present invention provides a technical solution: a fracturing packer, including two pipe strings 1, a packer 2 is installed in the middle of the pipe string 1, sliding grooves 3 are opened at the top and bottom on both sides of the packer 2, a sliding block 4 is slidably installed in the sliding groove 3, one end of the sliding block 4 extends into the sliding groove 3, the other end of the sliding block 4 extends out of the sliding groove 3, a fixed rod 5 is fixedly installed at the end of the sliding block 4 extending out of the sliding groove 3, and fixed grooves 6 are opened at the top and bottom of the pipe string 1.

[0030] Combined with Figures 1-2 As shown in the figure, one end of a support rod 7 is fixedly installed on both sides of the top and bottom of the packer 2, the other end of the support rod 7 is rotatably installed with a first rotating shaft, a rotating rod 8 is rotatably installed on the first rotating shaft, a moving groove 9 is opened on one side of the bottom of the rotating rod 8, a moving block 10 is slidably installed in the moving groove 9, one end of the moving block 10 extends into the moving groove 9, the other end of the moving block 10 extends out of the moving groove 9, a second rotating shaft is rotatably installed at the end of the moving block 10 extending out of the moving groove 9, and the second rotating shaft is rotatably connected to the top of the fixed rod 5.

[0031] Combined with Figures 1-3 As shown in the figure, one end of the rotating rod 8 is rotatably installed with a third rotating shaft, a telescopic rod 12 is rotatably installed on the third rotating shaft, a sleeve rod 11 is sleeved on the telescopic rod 12, limiting holes 13 are opened on the inner walls of both sides of the top of the sleeve rod 11, a limiting rod 14 is slidably installed in the limiting holes 13, and a plurality of limiting grooves 15 are opened at the top of the telescopic rod 12.

[0032] Working principle of the utility model: When fixation is required, first move the thin rod 16 upward. The thin rod 16 drives the limit rod 14 to move upward, and the limit rod 14 disengages from the limit groove 15. Then rotate the rotating rod 8 downward. The rotating rod 8 drives the moving groove 9 and the moving block 10 to rotate upward. The moving block 10 drives the second rotating shaft to move upward, and the second rotating shaft drives the fixing rod 5 to move upward. Then bring the pipe column 1 close to the packer 2, and then release the rotating rod 8. The first spring drives the sliding block 4 to move downward, and the sliding block 4 drives the fixing rod 5 to move downward. The fixing rod 5 is clamped into the fixing groove 6, thus achieving the purpose of fixation.

[0033] The content not detailedly described in this specification belongs to the prior art well-known to those skilled in the art. Although the embodiments of the utility model have been shown and described, for those ordinary skilled in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the utility model. The scope of the utility model is defined by the appended claims and their equivalents.

Claims

1. A fracturing packer, comprising two pipe strings (1), characterized in that: A packer (2) is installed in the middle of the pipe string (1). Sliding grooves (3) are provided at the top and bottom on both sides of the packer (2). A sliding block (4) is slidably installed in the sliding groove (3). One end of the sliding block (4) extends into the sliding groove (3), and the other end of the sliding block (4) extends out of the sliding groove (3). A fixing rod (5) is fixedly installed at the end of the sliding block (4) extending out of the sliding groove (3). Fixing grooves (6) are provided at the top and bottom of the pipe string (1); One end of a support rod (7) is fixedly installed on both sides of the top and bottom of the packer (2). The other end of the support rod (7) is rotatably installed with a first rotating shaft, and a rotating rod (8) is rotatably installed on the first rotating shaft; A moving groove (9) is provided on one side of the bottom of the rotating rod (8). A moving block (10) is slidably installed in the moving groove (9). One end of the moving block (10) extends into the moving groove (9), and the other end of the moving block (10) extends out of the moving groove (9). A second rotating shaft is rotatably installed at the end of the moving block (10) extending out of the moving groove (9), and the second rotating shaft is rotatably connected to the top of the fixing rod (5); One end of the rotating rod (8) is rotatably installed with a third rotating shaft, and a telescopic rod (12) is rotatably installed on the third rotating shaft. A sleeve rod (11) is sleeved on the telescopic rod (12); Limiting holes (13) are provided on the inner walls of both sides of the top of the sleeve rod (11). Limiting rods (14) are slidably installed in the limiting holes (13). A plurality of limiting grooves (15) are provided at the top of the telescopic rod (12).

2. The fracturing packer according to claim 1, wherein: The fixing rod (5) is adapted to the fixing groove (6).

3. The fracturing packer according to claim 1, wherein: One end of a first spring is fixedly installed at the top of the sliding block (4), and the other end of the first spring is fixedly connected to the inner wall of the top of the sliding groove (3).

4. The fracturing packer according to claim 1, wherein: The moving block (10) is located on one side of the bottom of the rotating rod (8) close to the fixing rod (5).

5. The fracturing packer according to claim 1, wherein: The limiting rod (14) is adapted to the limiting groove (15).

6. The fracturing packer according to claim 1, wherein: One side of the limiting rod (14) is fixedly installed with a thin rod (16). One end of a second spring is fixedly installed at the bottom of the thin rod (16), and the other end of the second spring is fixedly connected to the top of the sleeve rod (11).

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