Combined fracturing head device for oil exploitation

Abstract

The utility model discloses an oil exploitation combined type fracturing head device which comprises a fracturing head body, an injection hole is formed in the middle of the fracturing head body, fracturing pipes are arranged on the two sides of the fracturing head body, sealing mechanisms are fixedly connected to the inner walls of the fracturing pipes, one side of each fracturing pipe is fixedly connected with a connecting ring, and the other side of each fracturing pipe is fixedly connected with a sealing mechanism. A connecting mechanism is fixedly connected to the inner wall of the connecting ring, a connecting pipe is detachably connected to one side of the connecting mechanism, and a clamping groove is connected to the outer wall of the connecting pipe in an embedded mode. By means of the arranged sealing mechanism, the equipment can keep good sealing performance in the severe underground environment, so that leakage of high-pressure fluid is effectively prevented, the service life of the equipment is prolonged, and the operation safety is enhanced; through the arranged connecting mechanism, the equipment can keep good stability in a severe underground environment, operation interruption caused by loosening or falling of the equipment is avoided, and all the assemblies can be tightly matched.

Description

Technical Field

[0001] The utility model relates to the technical field of fracturing head devices, in particular to a combined fracturing head device for oil production. Background Art

[0002] Oil is an important energy source. During the process of oil extraction, fracturing is often required, which requires the use of a fracturing head device. The most important part of the fracturing process is the fracturing head. The fracturing head is installed on the top of the oil tree during oilfield fracturing operations. It is used to collect fracturing fluids from multiple pipelines and realize multi-line injection.

[0003] Patent CN220955547U discloses a fracturing head for a fracturing project, comprising a fracturing head body, a vertical injection chamber, a lateral injection chamber and a connecting pipe. The vertical injection chamber and the lateral injection chamber are respectively located inside and on both sides of the fracturing head body. The connecting pipe and the lateral injection chamber are connected to each other. A first docking structure and a second docking structure are provided at the outer end of the lateral injection chamber. The first docking structure and the second docking structure are matched with each other. A fixed structure is provided on the outer side of the second docking structure. The first docking structure comprises a first docking ring, a support leg, a first docking inner ring, a first limit seat and an embedded sealing ring. The support leg is provided with two groups of protrusions on both sides of the outer end of the first docking ring and is embedded in the interior of the fracturing head body at the same time. The first docking inner ring is fixedly connected to the first docking ring, the first limit seat is fixedly connected to the first docking inner ring, the embedded sealing ring is embedded in the first limit seat, and the surface of the first docking inner ring is fixedly connected with a threaded layer.

[0004] At present, traditional combined fracturing head devices usually use bolts to install and remove the pipes and fracturing heads, which often takes a lot of time, reduces work efficiency, and is inconvenient to use the fracturing heads. At the same time, the bolts will rotate when used for a long time, resulting in a loose connection, which may cause side leakage of fracturing fluid and pose a safety hazard. Utility Model Content

[0005] The purpose of the utility model is to provide a combined fracturing head device for oil production, so as to solve the problem that the combined fracturing head device proposed in the above background technology usually uses bolts to install and remove the pipe between the fracturing head, which often takes a lot of time, reduces work efficiency, and is inconvenient to use the fracturing head. At the same time, the bolts may rotate when used for a long time, resulting in a loose connection, which may cause side leakage of fracturing fluid and pose a safety hazard.

[0006] To achieve the above-mentioned objectives, the present invention provides the following technical solutions: a combined fracturing head device for oil production, comprising a fracturing head body, an injection hole being provided in the middle portion of the fracturing head body, fracturing tubes being provided on both sides of the fracturing head body, a sealing mechanism being fixedly connected to the inner wall of the fracturing tube, a connecting ring being fixedly connected to one side of the fracturing tube, a connecting mechanism being fixedly connected to the inner wall of the connecting ring, a connecting tube being detachably connected to one side of the connecting mechanism, and a card slot being embedded in the outer wall of the connecting tube;

[0007] The sealing mechanism includes a feed hole, the outer wall of the feed hole is connected to the inner wall of the fracturing pipe, an annular groove is provided on one side of the feed hole, a cylinder is provided on one side of the inner wall of the annular groove, a spring 1 is sleeved on the outer wall of the cylinder, a limiting ring is fixedly connected to one side of the spring 1, a sealing gasket is fixedly connected to one side of the limiting ring, and a feed pipe is fixedly connected to the side of the limiting ring away from the sealing gasket.

[0008] Preferably, the outer wall of the injection hole is connected to the inner wall of the fracturing head body through and through, and one end of the fracturing tube is fixedly connected to both sides of the fracturing head body.

[0009] Preferably, one side of the feed hole is embedded and connected with one side of the annular groove, and one side of the inner wall of the annular groove is fixedly connected with one side of the cylinder.

[0010] Preferably, the inner diameter of the sealing gasket is the same as the outer diameter of the feed hole.

[0011] Preferably, the connecting mechanism includes an installation groove 1, the outer wall of the installation groove 1 is embedded and connected with the outer wall of the connecting ring, one end of the installation groove 1 is provided with a connecting hole, one end of the connecting hole is provided with an installation groove 2, the inner wall of the connecting hole is slidably connected with a connecting rope, one end of the connecting rope is fixedly connected with a clamping block, one end of the clamping block is fixedly connected with a spring 2, the bottom wall of the installation groove 1 is fixedly connected with a spring 3, and one end of the spring 3 is fixedly connected with a pull plate.

[0012] Preferably, the bottom wall of the first mounting groove is connected through the upper end of the communicating hole, and the lower end of the communicating hole is connected through the top wall of the second mounting groove.

[0013] Preferably, the size of the card block is the same as the size of the card slot.

[0014] Compared with the prior art, the beneficial effects of the present invention are:

[0015] 1. The sealing mechanism enables the equipment to maintain good sealing performance in harsh underground environments, thereby effectively preventing the leakage of high-pressure fluids, which not only increases the service life of the equipment but also enhances the safety of operations. In addition, the close fit between the sealing gasket and the feed hole ensures that the fluid can pass smoothly under high-pressure operating conditions without causing energy loss or equipment damage due to poor sealing, further improving the adaptability and reliability of the equipment;

[0016] 2. The connection mechanism can enable the equipment to maintain good stability in harsh underground environments, avoid operation interruptions caused by loosening or falling of the equipment, and make the various components work closely together to ensure that under high-pressure and high-impact operating conditions, the various parts of the equipment will not move relative to each other, thereby ensuring the continuity and efficiency of the fracturing operation. In addition, the block can be driven to move by pulling the plate, so that the connecting pipe can be easily disassembled and assembled without being restricted, reducing the time required for installation and removal by workers, avoiding the time-consuming traditional installation method using multiple bolts, and improving work efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic cross-sectional view of the three-dimensional structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the sealing mechanism of the present utility model;

[0019] Figure 3 This is a schematic diagram of the connection mechanism of the utility model;

[0020] Figure 4 It is a schematic side view of the three-dimensional structure of the present invention.

[0021] In the figure: 1. Fracturing head body; 2. Injection hole; 3. Fracturing pipe; 4. Sealing mechanism; 5. Connecting ring; 6. Connecting mechanism; 7. Connecting pipe; 8. Clamping groove; 41. Feeding hole; 42. Annular groove; 43. Cylinder; 44. Spring 1; 45. Limiting ring; 46. Sealing gasket; 47. Feeding pipe; 61. Mounting groove 1; 62. Connecting hole; 63. Mounting groove 2; 64. Connecting rope; 65. Clamping block; 66. Spring 2; 67. Spring 3; 68. Pull plate. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0023] See also Figure 1 and Figure 4 The utility model provides a technical solution: a combined fracturing head device for oil production, comprising a fracturing head body 1, an injection hole 2 is provided in the middle part of the fracturing head body 1, fracturing pipes 3 are provided on both sides of the fracturing head body 1, a sealing mechanism 4 is fixedly connected to the inner wall of the fracturing pipe 3, a connecting ring 5 is fixedly connected to one side of the fracturing pipe 3, a connecting mechanism 6 is fixedly connected to the inner wall of the connecting ring 5, a connecting pipe 7 is detachably connected to one side of the connecting mechanism 6, a card slot 8 is embedded in the outer wall of the connecting pipe 7, the sealing mechanism 4 includes a feed hole 41, a feed hole 42 is provided, and a sealing mechanism 4 is fixedly connected to the inner wall of the connecting ring 5. The outer wall of the hole 41 is connected to the inner wall of the fracturing pipe 3. An annular groove 42 is provided on one side of the feed hole 41. A cylinder 43 is provided on one side of the inner wall of the annular groove 42. A spring 44 is sleeved on the outer wall of the cylinder 43. A limit ring 45 is fixed to one side of the spring 44. A sealing gasket 46 is fixed to one side of the limit ring 45. A feed pipe 47 is fixed to the side of the limit ring 45 away from the sealing gasket 46. The outer wall of the injection hole 2 is connected to the inner wall of the fracturing head body 1. One end of the fracturing pipe 3 is fixedly connected to both sides of the fracturing head body 1.

[0024] The annular grooves 42 are respectively arranged on the inner arc surface of the fracturing pipe 3, and the annular grooves 42 are slidably connected with the limiting rings 45. The limiting rings 45 are installed in conjunction with the clamping blocks 65. The side of the limiting rings 45 close to the feed hole 41 is provided with a delivery pipe 47, and the outer arc surface of the delivery pipe 47 fits the inner arc surface of the feed hole 41. Cylinders 43 are annularly distributed between the inner wall of the annular groove 42 and the side of the adjacent connecting ring 5. The cylinders 43 pass through the limiting rings 45 respectively, and the outer arc surface of the cylinders 43 is sleeved with springs 44. One end of the spring 44 is fixedly connected to the inner wall of the annular groove 42, and the other end of the spring 44 is fixedly connected to the side of the limiting ring 45. The insertion of the connecting pipe 7 will push the limiting ring 45 to move, and the sealing gasket 46 is arranged on the side of the limiting ring 45 away from the injection hole 2 to seal the gap between the connecting pipe 7 and the fracturing pipe 3.

[0025] See also Figure 2 In order to quickly seal between one side of the fracturing pipe 3 and one side of the connecting pipe 7, one side of the feed hole 41 is embedded and connected with one side of the annular groove 42, and one side of the inner wall of the annular groove 42 is fixedly connected with one side of the cylinder 43. The inner diameter of the sealing gasket 46 is the same as the outer diameter of the feed hole 41;

[0026] The staff inserts the connecting pipe 7 into the interior of the whole formed by the connecting ring 5 and the fracturing pipe 3. During the insertion process of the connecting pipe 7, due to the existence of the inclined surface at the end of the block 65, the outer wall of the connecting pipe 7 causes the block 65 to retract into the inside of the installation groove 2 63, and the spring 2 66 contracts. When the connecting pipe 7 is inserted to a certain distance, the elastic force of the spring 2 66 resets the block 65, and the inclined surface of the block 65 contacts the groove 8 on the connecting pipe 7, limiting the outward withdrawal of the connecting pipe 7. At the same time, the insertion of the connecting pipe 7 will push the limiting ring 45 to move in the direction close to the injection hole 2, causing the spring 1 44 to contract and generate elastic force. Under the elastic force of the spring 1 44, the limiting ring 45 is tightly fitted with the side of the connecting pipe 7, and the position of the connecting pipe 7 is restricted by cooperation with the block 65. Similarly, the other connecting pipes 7 are connected to the fracturing pipe 3 respectively. During use, the material transported by the connecting pipe 7 will enter the injection hole through the material conveying pipe 47, the fracturing pipe 3 and the feed hole 41 in sequence. 2, so that the materials in multiple connecting pipes 7 are injected simultaneously, which is suitable for large-displacement, high-pressure fracturing operations. When the connecting pipe 7 needs to be removed, the pull plate 68 is pulled to move, so that the pull plate 68 drives the connecting rope 64 to move, and then the clamping block 65 is pulled in the direction away from the center of the connecting ring 5, so that the connecting pipe 7 can be pulled out normally, and the pull plate 68 is reset under the elastic action of the spring three 67. The sealing mechanism 4 can effectively prevent liquid or gas from leaking between the fracturing pipe 3 and the connecting pipe 7 during the fracturing process. The setting of the sealing mechanism 4 ensures that under high-pressure conditions, the fracturing fluid can smoothly enter the fracturing pipe 3 through the feed hole 41, while ensuring the overall sealing performance of the device. In addition, under the setting of the connecting pipe 7, quick clamping can be achieved, making connection and disassembly more convenient, which not only improves work efficiency, but also reduces the problem of poor sealing caused by frequent disassembly, improves the efficiency and safety of the fracturing operation, and is also convenient for operation and maintenance.

[0027] See also Figure 3 In order to quickly fix the connecting pipe 7 in the connecting ring 5, the connecting mechanism 6 includes a mounting groove 1 61, the outer wall of the mounting groove 1 61 is embedded and connected with the outer wall of the connecting ring 5, one end of the mounting groove 1 61 is provided with a communicating hole 62, one end of the communicating hole 62 is provided with a mounting groove 2 63, the inner wall of the communicating hole 62 is slidably connected with a connecting rope 64, one end of the connecting rope 64 is fixedly connected with a clamping block 65, one end of the clamping block 65 is fixedly connected with a spring 2 66, the bottom wall of the mounting groove 1 61 is fixedly connected with a spring 3 67, one end of the spring 3 67 is fixedly connected with a pull plate 68, the bottom wall of the mounting groove 1 61 is connected through the upper end of the communicating hole 62, the lower end of the communicating hole 62 is connected through the top wall of the mounting groove 2 63, and the size of the clamping block 65 is the same as that of the clamping groove 8;

[0028] When the device is used for a long time and the connecting pipe 7 needs to be disassembled and repaired, the staff pulls the pull plate 68, which drives the connecting rope 64 and the block 65 to move upward, so that the block 65 leaves the restriction of the slot 8, and the staff can easily disassemble the connecting pipe 7. After the maintenance and replacement is completed, it can be reset. The end of the connecting pipe 7 will squeeze the block 65, and finally the block 65 is clamped in the slot 8 by the elastic force of the spring 2 66, completing the installation limit of the connecting pipe 7. Afterwards, the sealing gasket 46 is arranged on the inner side of the annular groove 42 and fits tightly with the inner wall of the annular groove 42. The material of the sealing gasket 46 has good elasticity and high temperature resistance, and can maintain a good sealing effect under high temperature and high pressure environments. In actual use, the sealing gasket 46 can effectively prevent liquid or gas from leaking from the gap between the feed hole 41 and the fracturing pipe 3, thereby ensuring the safety and efficiency of the fracturing operation, not only improving the sealing performance of the device, but also enhancing the connection reliability between the connecting pipe 7 and the fracturing pipe 3.

[0029] Working principle: First, the annular grooves 42 are respectively arranged on the inner arc surface of the fracturing pipe 3, and the annular grooves 42 are slidably connected with the limit rings 45. The limit rings 45 are installed in conjunction with the clamping blocks 65. The side of the limit rings 45 close to the feed hole 41 is provided with a delivery pipe 47. The outer arc surface of the delivery pipe 47 fits the inner arc surface of the feed hole 41. Cylinders 43 are distributed in an annular manner between the inner wall of the annular groove 42 and the side of the adjacent connecting ring 5. The cylinders 43 pass through the limit rings 45 respectively. The outer arc surface of the cylinders 43 is sleeved with springs 44. One end of the spring 44 is fixedly connected to the inner wall of the annular groove 42, and the other end of the spring 44 is fixedly connected to the side of the limit ring 45. The insertion of the connecting pipe 7 will push the limit ring 45 to Move, the sealing gasket 46 is set on the side of the limiting ring 45 away from the injection hole 2, and the gap between the connecting pipe 7 and the fracturing pipe 3 is sealed. The staff inserts the connecting pipe 7 into the interior of the whole composed of the connecting ring 5 and the fracturing pipe 3. During the insertion of the connecting pipe 7, due to the existence of the inclined surface at the end of the block 65, under the action of the outer wall of the connecting pipe 7, the block 65 is retracted to the inside of the mounting groove 2 63, and the spring 2 66 contracts. When the connecting pipe 7 is inserted to a certain distance, the block 65 is reset under the elastic force of the spring 2 66, and the inclined surface of the block 65 contacts the card groove 8 on the connecting pipe 7, limiting the outward withdrawal of the connecting pipe 7. At the same time, the insertion of the connecting pipe 7 will push the limiting ring 45 close to the injection hole. 2, so that the spring 1 44 contracts and generates elastic force. Under the elastic force of the spring 1 44, the limiting ring 45 is tightly fitted with the side of the connecting pipe 7, and the position of the connecting pipe 7 is limited by cooperating with the block 65. Similarly, the other connecting pipes 7 are connected to the fracturing pipe 3 respectively. During use, the material transported by the connecting pipe 7 will enter the interior of the injection hole 2 through the material conveying pipe 47, the fracturing pipe 3 and the feed hole 41 in sequence, so that the materials in multiple connecting pipes 7 are injected at the same time, which is suitable for large-displacement and high-pressure fracturing operations. When the connecting pipe 7 needs to be removed, the pull plate 68 is pulled to move, so that the pull plate 68 drives the connecting rope 64 to move, and then pulls the block 65 away from the connecting ring 5 moves in the direction of the center so that the connecting pipe 7 can be pulled out normally, and the pull plate 68 is reset under the elastic action of the spring 3 67. The sealing mechanism 4 can effectively prevent liquid or gas from leaking from between the fracturing pipe 3 and the connecting pipe 7 during the fracturing process. The setting of the sealing mechanism 4 ensures that under high pressure, the fracturing fluid can smoothly enter the fracturing pipe 3 through the feed hole 41, while ensuring the sealing performance of the entire device. In addition, under the setting of the connecting pipe 7, quick clamping can be achieved, making connection and disassembly more convenient, which not only improves work efficiency, but also reduces the problem of poor sealing caused by frequent disassembly, improves the efficiency and safety of the fracturing operation, and facilitates operation and maintenance.

[0030] Then, when the device is used for a long time and the connecting pipe 7 needs to be disassembled and repaired, the staff pulls the pull plate 68, and the pull plate 68 drives the connecting rope 64 and the block 65 to move upward, so that the block 65 leaves the restriction of the slot 8, and the staff can easily disassemble the connecting pipe 7. After the maintenance and replacement, it can be reset. The end of the connecting pipe 7 will squeeze the block 65, and finally the block 65 is stuck in the slot 8 by the elastic force of the spring 2 66, completing the installation limit of the connecting pipe 7. Afterwards, the sealing gasket 46 is set on the inner side of the annular groove 42 and fits tightly against the inner wall of the annular groove 42. The material of the sealing gasket 46 has good elasticity and high temperature resistance, and can maintain a good sealing effect under high temperature and high pressure environments. In actual use, the sealing gasket 46 can effectively prevent liquid or gas from leaking from the gap between the feed hole 41 and the fracturing pipe 3, thereby ensuring the safety and efficiency of the fracturing operation, not only improving the sealing performance of the device, but also enhancing the connection reliability between the connecting pipe 7 and the fracturing pipe 3. The above is the working process of the entire device, and the contents not described in detail in this specification belong to the existing technology known to professional and technical personnel in this field.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A combined fracturing head device for oil production, comprising a fracturing head body (1), characterized in that: An injection hole (2) is provided in the middle of the fracturing head body (1), and fracturing tubes (3) are provided on both sides of the fracturing head body (1), a sealing mechanism (4) is fixedly connected to the inner wall of the fracturing tube (3), a connecting ring (5) is fixedly connected to one side of the fracturing tube (3), a connecting mechanism (6) is fixedly connected to the inner wall of the connecting ring (5), a connecting tube (7) is detachably connected to one side of the connecting mechanism (6), and a card slot (8) is embedded in the outer wall of the connecting tube (7); The sealing mechanism (4) includes a feed hole (41), the outer wall of the feed hole (41) is connected to the inner wall of the fracturing pipe (3), an annular groove (42) is provided on one side of the feed hole (41), a cylinder (43) is provided on one side of the inner wall of the annular groove (42), a spring (44) is sleeved on the outer wall of the cylinder (43), a limiting ring (45) is fixed on one side of the spring (44), a sealing gasket (46) is fixed on one side of the limiting ring (45), and a feed pipe (47) is fixed on the side of the limiting ring (45) away from the sealing gasket (46).

2. The combined fracturing head device for oil production according to claim 1, characterized in that: The outer wall of the injection hole (2) is connected through the inner wall of the fracturing head body (1), and one end of the fracturing pipe (3) is fixedly connected to both sides of the fracturing head body (1).

3. The combined fracturing head device for oil production according to claim 1, characterized in that: One side of the feed hole (41) is embedded and connected with one side of the annular groove (42), and one side of the inner wall of the annular groove (42) is fixedly connected with one side of the cylinder (43).

4. The combined fracturing head device for oil production according to claim 3, characterized in that: The inner diameter of the sealing gasket (46) is the same as the outer diameter of the feed hole (41).

5. The combined fracturing head device for oil production according to claim 1, characterized in that: The connecting mechanism (6) includes a mounting groove (61), the outer wall of which is embedded in the outer wall of the connecting ring (5), a connecting hole (62) is provided at one end of the mounting groove (61), a mounting groove (63) is provided at one end of the connecting hole (62), a connecting rope (64) is slidably connected to the inner wall of the connecting hole (62), one end of the connecting rope (64) is fixedly connected to a clamping block (65), one end of the clamping block (65) is fixedly connected to a spring (66), the bottom wall of the mounting groove (61) is fixedly connected to a spring (67), and one end of the spring (67) is fixedly connected to a pull plate (68).

6. The combined fracturing head device for oil production according to claim 5, characterized in that: The bottom wall of the first installation groove (61) is connected to the upper end of the communication hole (62), and the lower end of the communication hole (62) is connected to the top wall of the second installation groove (63).

7. The combined fracturing head device for oil production according to claim 5, characterized in that: The size of the card block (65) is the same as the size of the card slot (8).

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