Novel petroleum drilling and production packer

Abstract

The utility model relates to the technical field of packers, and discloses a novel oil drilling and production packer which comprises a control block, a plurality of sliding blocks are connected in the control block in a sliding mode, first sliding columns are fixedly connected to the two sides of the sliding blocks, extrusion blocks are fixedly connected to the exteriors of the first sliding columns, and the extrusion blocks are fixedly connected to the exteriors of the second sliding columns. And the exteriors of the multiple sliding blocks are rotationally connected with transmission rods, the exteriors of the multiple transmission rods are rotationally connected with rack plates, the front end of the control block is fixedly connected with a rubber barrel, a driving assembly used for driving is arranged in the control block, and a tubular column is slidably connected in the control block. According to the utility model, the rubber sleeve can be quickly controlled, and the state of the rubber sleeve can be timely and accurately adjusted according to different working condition requirements such as layered mining and water injection operation in petroleum drilling and production operation, so that the best packing effect is achieved, and the smooth development of various underground operations is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of packers, in particular to a novel oil drilling and production packer. Background Art

[0002] In the process of oil extraction, recovery rate is a key indicator. The simple and extensive extraction methods in the early days could only extract a part of the oil resources in the oil reservoir, and a large amount of oil still remained underground and was difficult to be extracted. By using packers, oil layers of different depths and characteristics in the oil well can be separated, and appropriate extraction strategies can be formulated according to the specific conditions of each layer. For example, when performing fracturing and production increase operations on low-permeability oil layers, packers are used to separate the oil layer from other layers to prevent the fracturing fluid from entering other layers and causing unnecessary effects. At the same time, water can also be accurately injected into the target oil layer to improve oil displacement efficiency, thereby effectively improving the recovery rate of the entire oil well.

[0003] Some of today's oil production packers cannot quickly and accurately control the rubber cylinder, making it impossible to quickly and accurately control the expansion and contraction of the rubber cylinder. For example, when performing layered production operations, it is necessary to open or close the packer in time according to the specific conditions of different oil layers to achieve effective separation or connection of the oil layers. Some existing packers are unable to respond quickly to operating instructions due to the limitations of their own structural design or control methods, resulting in delays in operations such as oil layer switching, which not only affects the production efficiency, but also has an adverse effect on the overall production effect of the oil reservoir. Therefore, a new type of oil drilling and production packer is proposed to solve the above problems. Utility Model Content

[0004] In order to make up for the above deficiencies, the present invention provides a novel oil drilling and production packer, which aims to improve the problem in the prior art that the packer cannot quickly and accurately control the rubber cylinder.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A novel oil drilling and production packer comprises a control block, wherein the control block is internally slidably connected to a plurality of sliding blocks, both sides of the plurality of sliding blocks are fixedly connected to a sliding column 1, the exteriors of the plurality of sliding columns 1 are fixedly connected to an extrusion block, the exteriors of the plurality of sliding blocks are rotatably connected to a transmission rod, the exteriors of the plurality of transmission rods are rotatably connected to a rack plate, a front end of the control block is fixedly connected to a rubber cylinder, a driving assembly for driving is provided inside the control block, a pipe string is internally slidably connected to the control block, and a replacement assembly for quick replacement is provided outside the pipe string;

[0007] As a further description of the above technical solution:

[0008] A sliding groove 1 is provided inside the control block, and a plurality of limit columns are fixedly connected inside the control block;

[0009] As a further description of the above technical solution:

[0010] The drive assembly includes a motor, the exterior of the motor is fixedly connected to the interior of the control block, and the driving end of the motor is fixedly connected to a transmission gear;

[0011] As a further description of the above technical solution:

[0012] The transmission gear is meshed with the rack plate, and the rear end of the transmission gear is rotatably connected to the interior of the control block;

[0013] As a further description of the above technical solution:

[0014] The outside of the control block is slidably connected to a driven block, and the rear end of the driven block is fixedly connected to the front end of the rubber cylinder;

[0015] As a further description of the above technical solution:

[0016] The replacement assembly includes a mounting block, the interior of the mounting block is slidably connected to a fixed tooth, the exterior of the fixed tooth is slidably connected to the interior of the pipe column, the top end of the fixed tooth is slidably connected to a second sliding column, and the exterior of the second sliding column is sleeved with a telescopic spring;

[0017] As a further description of the above technical solution:

[0018] The top end of the telescopic spring is fixedly connected to the inside of the mounting block, and the other end of the telescopic spring is fixedly connected to the top end of the fixed tooth;

[0019] As a further description of the above technical solution:

[0020] A second sliding groove is provided on the outside of the pipe column, and the top end of the second sliding column is fixedly connected to the inside of the mounting block.

[0021] The utility model has the following beneficial effects:

[0022] 1. In the present invention, by sliding the sliding block in the sliding groove 1, with the help of the synergistic effect of the various components connected thereto, power can be quickly transmitted to the rubber cylinder, so that the rubber cylinder can be quickly controlled, which is convenient for timely and accurate adjustment of the state of the rubber cylinder according to different working conditions in oil drilling operations, such as layered mining and water injection operations, so as to achieve the best sealing effect and ensure the smooth implementation of various downhole operations.

[0023] 2. In the present invention, the fixed teeth can slide in a controlled manner inside the sliding groove 2, so that the replacement operation of the packer can be completed quickly, which effectively shortens the operation downtime caused by the replacement of the packer, greatly improves the overall efficiency of the oil drilling operation, and ensures the continuity and efficiency of the underground mining work. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 This is a three-dimensional schematic diagram of a new type of oil drilling and production packer proposed by the utility model;

[0025] Figure 2 This is a structural diagram of a sliding column 1 of a novel oil drilling and production packer proposed by the present invention;

[0026] Figure 3 This is a structural diagram of a new type of oil drilling and production packer proposed by the utility model;

[0027] Figure 4 This is a structural schematic diagram of a new type of fixed teeth of a petroleum drilling and production packer proposed by the utility model.

[0028] Legend:

[0029] 1. Control block; 2. Rubber cylinder; 3. Driven block; 4. Sliding block; 5. Sliding column 1; 6. Extrusion block; 7. Sliding groove 1; 8. Transmission rod; 9. Rack plate; 10. Limit column; 11. Transmission gear; 12. Motor; 13. Mounting block; 14. Fixed tooth; 15. Telescopic spring; 16. Sliding groove 2; 17. Sliding column 2; 18. Pipe column. DETAILED DESCRIPTION

[0030] 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.

[0031] Reference Figures 1 to 3The present invention provides an embodiment of a novel oil drilling and production packer, comprising a control block 1. The control block 1 serves as an integral support and housing for various components. Made of high-strength alloy steel, the control block 1 exhibits excellent pressure and corrosion resistance, effectively withstanding the complex and harsh downhole environment and ensuring stable operation of the packer's internal components. The control block 1 is internally slidably connected to a plurality of sliding blocks 4. These sliding blocks 4 are made of a wear-resistant alloy material and can slide smoothly within the control block 1, ensuring transmission stability. Both sides of the plurality of sliding blocks 4 are fixedly connected to sliding posts 5. These sliding posts 5 are also made of a high-strength and tough metal material to withstand the forces generated by subsequent extrusion and other actions. The exteriors of the plurality of sliding posts 5 are fixedly connected to extrusion blocks 6. These extrusion blocks 6 are made of a metal material with moderate hardness and a specially treated, smooth surface, which reduces wear on the rubber cylinder 2. The exteriors of the plurality of sliding blocks 4 are rotatably connected to transmission rods 8. These transmission rods 8 are made of high-quality metal material, exhibiting excellent rigidity and toughness, enabling accurate power transmission.

[0032] The outside of the multiple transmission rods 8 are all rotatably connected to the rack plate 9. The material of the rack plate 9 is a high-precision metal material, and the tooth shape is precisely processed, which can achieve good meshing transmission with the transmission gear 11. The front end of the control block 1 is fixedly connected to the rubber tube 2. The rubber tube 2 is made of oil-resistant, heat-resistant and highly elastic rubber material. This material allows the rubber tube 2 to maintain good elasticity and sealing performance under different temperatures underground and in contact with crude oil and other media, effectively achieving the sealing effect on the oil pipeline [2]. The inside of the control block 1 is provided with a driving component for driving. The inside of the control block 1 is slidably connected to the pipe string 18. The pipe string 18 is made of high-strength steel pipe. Its inner and outer walls are finely processed. The smooth inner wall can ensure the smooth passage of fluid. The outer wall has good wear resistance and is convenient for mobile operation underground. The outside of the pipe string 18 is provided with a replacement component for quick replacement.

[0033] The control block 1 is provided with a sliding groove 7 inside, and a plurality of limit posts 10 are fixedly connected to the inside of the control block 1. The limit posts 10 can limit and guide the sliding of components such as the sliding block 4, ensuring the accuracy of their motion trajectory. The material is high-strength metal and can withstand the impact force when the components slide. The drive assembly includes a motor 12. The outside of the motor 12 is fixedly connected to the inside of the control block 1. The motor 12 uses an explosion-proof, high-temperature resistant, high-torque motor specially designed for underground use. This motor 12 can adapt to the special environment of high temperature, high pressure and the presence of flammable and explosive gases underground. The driving end of the motor 12 is fixedly connected to a transmission gear 11. The transmission gear 11 is meshed with the rack plate 9. The rear end of the transmission gear 11 is rotatably connected to the inside of the control block 1. The transmission gear 11 is driven to rotate by the motor 12, which can achieve precise power transmission, so that the rack plate 9 slides inside the control block 1, and then drives the entire transmission system to move, achieving the purpose of controlling the expansion or contraction of the rubber cylinder 2.

[0034] Since the motor 12 can provide precise speed and torque output, it can accurately control the opening and closing actions of the packer, which helps to achieve precise sealing operations in complex downhole environments and improve the sealing effect. For example, in the exploitation of multi-layer oil reservoirs, when different oil layers need to be accurately separated, the packer driven by the motor can accurately separate the oil layers with the advantage of its precise control, avoid the mutual cross-flow of fluids between different oil layers, and thus improve the exploitation efficiency of each oil layer. The external sliding connection of the control block 1 is connected to the follower block 3, and the rear end of the follower block 3 is fixedly connected to the front end of the rubber cylinder 2. The follower block 3 plays the role of assisting the rubber cylinder 2 to expand and contract. Its material is similar to that of the control block 1, which is high-strength alloy steel. It can move with the rubber cylinder 2 during the deformation process to ensure the coordination of the overall movement of the rubber cylinder 2;

[0035] Reference Figure 1 and Figure 4 The replacement component includes a mounting block 13, the internal sliding connection of the mounting block 13 is provided with a fixed tooth 14, the mounting block 13 is made of a solid metal material, which can provide a stable mounting base for components such as the fixed tooth 14, the external sliding connection of the fixed tooth 14 is inside the pipe string 18, and the material of the fixed tooth 14 is a high-strength and elastic metal material, which can not only ensure the firm fixation of the pipe string 18, but also enable it to slide smoothly by applying appropriate external force when the packer needs to be replaced, the top of the fixed tooth 14 is slidably connected with a sliding column 2 17, the external sleeve of the sliding column 2 17 is provided with a telescopic spring 15, the top of the telescopic spring 15 is fixedly connected to the inside of the mounting block 13, and the other end of the telescopic spring 15 is fixedly connected to the top of the fixed tooth 14, the telescopic spring 15 is made of high-quality spring steel and has good elastic recovery ability, which can push the fixed tooth 14 back to its original position in time after sliding, and a sliding groove 2 16 is provided on the outside of the pipe string 18, and the top of the sliding column 2 17 is fixedly connected to the inside of the mounting block 13.

[0036] Working principle: When the operator needs to separate different oil layers by controlling the expansion of the rubber cylinder 2 to realize independent exploitation of each layer, the sealer is placed into the oil pipeline through the pipe string 18. When it reaches the specified position, the motor 12 is started, and the motor 12 drives the transmission gear 11 to rotate. The rack plate 9 slides inside the control block 1 through the transmission gear 11, so that the transmission rod 8 drives the sliding block 4 to slide along the inside of the sliding groove 7. Through the movement of the sliding block 4, the sliding column 5 squeezes the rubber cylinder 2 through the extrusion block 6, thereby realizing the expansion of the rubber cylinder 2 and sealing the oil pipeline. The motor 12 can provide precise speed and torque output, which can accurately control the opening and closing actions of the sealer, and help to achieve precise sealing operations in complex downhole environments and improve the sealing effect.

[0037] When the packer needs to be replaced, the mounting block 13 can be rotated so that the fixing teeth 14 are subjected to side pressure and slide into the interior of the mounting block 13, thereby canceling the fixation of the entire packer. At this time, the packer can be removed from the outside of the tubing string 18, and the new packer is rotated on the outside of the tubing string 18, and the fixing teeth 14 are pushed by the telescopic spring 15 to slide into the interior of the sliding groove 2 16, thereby completing the rapid fixation of the packer. Through simple operation, the consumption of manpower and time costs is reduced, the preparation time is shortened, and the work efficiency is improved.

[0038] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent replacements for some of the technical features therein. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A novel oil drilling and production packer, comprising a control block (1), characterized in that: The control block (1) is internally slidably connected to a plurality of sliding blocks (4), both sides of the plurality of sliding blocks (4) are fixedly connected to sliding columns (5), the exteriors of the plurality of sliding columns (5) are fixedly connected to extrusion blocks (6), the exteriors of the plurality of sliding blocks (4) are rotatably connected to transmission rods (8), the exteriors of the plurality of transmission rods (8) are rotatably connected to rack plates (9), the front end of the control block (1) is fixedly connected to a rubber cylinder (2), a driving assembly for driving is provided inside the control block (1), a pipe column (18) is slidably connected inside the control block (1), and a replacement assembly for quick replacement is provided outside the pipe column (18).

2. A novel oil drilling packer according to claim 1, characterized in that: A sliding groove (7) is provided inside the control block (1), and a plurality of limiting columns (10) are fixedly connected inside the control block (1).

3. The novel oil drilling packer according to claim 1, characterized in that: The drive assembly comprises a motor (12), the exterior of the motor (12) is fixedly connected to the interior of the control block (1), and the driving end of the motor (12) is fixedly connected to a transmission gear (11).

4. A novel oil drilling packer according to claim 3, characterized in that: The transmission gear (11) is meshedly connected to the rack plate (9), and the rear end of the transmission gear (11) is rotatably connected to the interior of the control block (1).

5. The novel oil drilling packer according to claim 1 is characterized in that: The outside of the control block (1) is slidably connected to a driven block (3), and the rear end of the driven block (3) is fixedly connected to the front end of the rubber cylinder (2).

6. The novel oil drilling packer according to claim 1, characterized in that: The replacement assembly comprises a mounting block (13), the interior of the mounting block (13) is slidably connected to a fixed tooth (14), the exterior of the fixed tooth (14) is slidably connected to the interior of the pipe column (18), the top end of the fixed tooth (14) is slidably connected to a second sliding column (17), and the exterior of the second sliding column (17) is sleeved with a telescopic spring (15).

7. A novel oil drilling packer according to claim 6, characterized in that: The top end of the telescopic spring (15) is fixedly connected to the inside of the mounting block (13), and the other end of the telescopic spring (15) is fixedly connected to the top end of the fixed tooth (14).

8. The novel oil drilling packer according to claim 6, characterized in that: A second sliding groove (16) is provided on the outside of the pipe column (18), and the top end of the second sliding column (17) is fixedly connected to the inside of the mounting block (13).

Images