Oil and gas well casing packer

Abstract

The utility model relates to the technical field of casing packers, and discloses an oil and gas well casing packer which comprises a main body mechanism. The main body mechanism comprises an oil and gas well casing packer lower pipe, an oil and gas well casing packer upper pipe, a middle rubber sleeve, an upper rubber sleeve, a lower rubber sleeve, an upper mounting thread, a lower limiting ring, an upper limiting ring, a mounting hole, a reinforcing rod, a first butt joint thread and a second butt joint thread. The oil and gas well casing packer upper pipe is movably installed at the upper end of the oil and gas well casing packer lower pipe. According to the oil and gas well casing packer, the upper limiting ring is installed at the outer end of the upper portion of the upper rubber sleeve through the first butt joint threads and the upper installation threads, the lower limiting ring is installed at the outer end of the lower portion of the lower rubber sleeve through the second butt joint threads and the lower installation threads, and then the reinforcing rods are installed in the lower limiting ring and the upper limiting ring through the installation holes; the overall strength of the device is greatly enhanced, and the device can bear larger stress when used, so that the oil and gas well casing pipe is better protected.

Description

Technical Field

[0001] The utility model relates to the technical field of casing packers, in particular to a casing packer for oil and gas wells. Background Art

[0002] A packer is a downhole tool with an elastic sealing element that can be used to seal the annular space between tubings of various sizes and the wellbore, as well as between tubings, and to isolate the production layer in order to control the production (injection) fluid and protect the casing. In oil production projects, packers are used for stratification. The packer is designed with an oil production channel. When the packer is set, the piston sleeve moves upward and the oil production channel is opened. After the packer is set, the upper layer pressure acts on the balance piston, pushing the rubber sleeve upward to protect the unsealing pin from shear force. When unsealing, the unsealing pin is sheared off by the friction between the rubber sleeve and the casing, and the piston sleeve moves downward to close the oil production channel.

[0003] Prior art CN219061588U, the patent proposes an oil and gas well casing packer, which can respectively set a head end rubber cylinder body and a terminal rubber cylinder body on the upper and lower sides of the middle rubber cylinder body, so as to provide a good stress state when the rubber cylinder expands, and at the same time, a spacer ring is set on the outer side of the head end rubber cylinder body and the terminal rubber cylinder body. When installing, the spacer ring can be driven to move to the inside of the connecting sleeve, and the spacer ring will drive the rubber ring to move through the vertical rod, so that the rubber ring enters the through hole of the sleeve, thereby completing the initial connection between the spacer ring and the connecting sleeve. The bolt head is then turned to drive the bolt to rotate. The bolt can move inward through the connecting sleeve, and the cross bar can drive the baffle to move, so that the inner wall of the baffle fits the outer wall of the spacer ring. At the same time, the lower part of the baffle can block the spacer ring, thereby further improving the stability of the spacer ring, etc. Even if the upper part of the oil and gas well casing packer has been used for a period of time, the head end rubber cylinder body connected to it below is not easy to loosen, thereby improving the sealing and use effect of the oil and gas well casing packer.

[0004] In the prior art, a rubber sleeve is usually provided on the outside of the casing of the oil and gas well to connect and ensure the air tightness of the pipeline. However, when in use, due to the material of the rubber sleeve itself, its strength is relatively poor. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] The utility model aims to provide an oil and gas well casing packer to solve the problem in the above background technology that the strength of the rubber tube is relatively poor due to the material of the rubber tube itself when in use.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an oil and gas well casing packer, comprising a main body mechanism, wherein the main body mechanism comprises a lower tube of the oil and gas well casing packer, an upper tube of the oil and gas well casing packer, an intermediate rubber tube, an upper rubber tube, a lower rubber tube, a lower mounting thread, an upper mounting thread, a lower limit ring, an upper limit ring, a mounting hole, a reinforcing rod, a first docking thread and a second docking thread, the upper tube of the oil and gas well casing packer is movably installed on the upper end of the lower tube of the oil and gas well casing packer, and the intermediate rubber tube is movably installed on the outer end of the docking point between the lower tube of the oil and gas well casing packer and the upper tube of the oil and gas well casing packer.

[0009] Preferably, the upper rubber cylinder is fixedly mounted on the upper end of the middle rubber cylinder, the lower rubber cylinder is fixedly mounted on the lower end of the middle rubber cylinder, and the lower mounting thread is fixedly disposed on the lower outer end of the lower rubber cylinder.

[0010] Preferably, the upper mounting thread is fixedly arranged on the upper outer end of the upper rubber cylinder, the lower limit ring is movably installed on the lower outer end of the lower rubber cylinder, and the upper limit ring is movably installed on the upper outer end of the upper rubber cylinder.

[0011] Preferably, the four mounting holes are fixedly arranged at the upper end of the lower limiting ring, the lower surface of the upper limiting ring is also provided with four mounting holes, and the reinforcing rod is movably mounted at the inner end of the mounting hole.

[0012] Preferably, the first butt-joint thread is fixedly arranged at the inner end of the upper limit ring, and the second butt-joint thread is fixedly arranged at the inner end of the lower limit ring.

[0013] Preferably, the upper limit ring is installed on the upper outer end of the upper rubber cylinder through a first docking thread and an upper mounting thread, and the lower limit ring is installed on the lower outer end of the lower rubber cylinder through a second docking thread and a lower mounting thread.

[0014] Preferably, the upper and lower ends of the reinforcing rod are respectively installed inside the lower limiting ring and the upper limiting ring through mounting holes.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] 1. The oil and gas well casing packer is provided with a lower limit ring and an upper limit ring. When in use, the upper limit ring can be installed on the upper outer end of the upper rubber tube through the first docking thread and the upper mounting thread, and the lower limit ring can be installed on the lower outer end of the lower rubber tube through the second docking thread and the lower mounting thread. Then, the reinforcing rod is installed inside the lower limit ring and the upper limit ring through the mounting hole, which greatly enhances the overall strength of the device, and can withstand greater stress when in use, thereby better protecting the oil and gas well casing;

[0017] 2. The oil and gas well casing packer, by providing the middle rubber cylinder, the upper rubber cylinder and the lower rubber cylinder, can ensure the air tightness of the joint between the lower pipe and the upper pipe of the oil and gas well casing packer when the device is in use, so that oil and gas will not leak through the joint between the lower pipe and the upper pipe of the oil and gas well casing packer when in use, and it is safer when in use. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional split structure of the utility model;

[0020] Figure 3 This is a schematic diagram of the three-dimensional structure of the limit ring of the utility model;

[0021] Figure 4 It is a schematic diagram of the three-dimensional structure of the rubber cartridge of the utility model.

[0022] In the figure: 1. main body; 101. lower tube of casing packer for oil and gas wells; 102. upper tube of casing packer for oil and gas wells; 103. middle rubber tube; 104. upper rubber tube; 105. lower rubber tube; 106. lower mounting thread; 107. upper mounting thread; 108. lower limit ring; 109. upper limit ring; 110. mounting hole; 111. reinforcing rod; 112. first docking thread; 113. second docking thread. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] See also Figure 1 - Figure 4The utility model provides a technical solution: an oil and gas well casing packer, comprising a main body mechanism 1, the main body mechanism 1 comprises an oil and gas well casing packer lower tube 101, an oil and gas well casing packer upper tube 102, an intermediate rubber tube 103, an upper rubber tube 104, a lower rubber tube 105, a lower mounting thread 106, an upper mounting thread 107, a lower limit ring 108, an upper limit ring 109, a mounting hole 110, a reinforcing rod 111, a first docking thread 112 and a second docking thread 113, the oil and gas well casing packer upper tube 102 is movably mounted on the upper end of the oil and gas well casing packer lower tube 101, and the intermediate rubber tube 103 is movably mounted on the outer end of the docking place between the oil and gas well casing packer lower tube 101 and the oil and gas well casing packer upper tube 102.

[0025] The upper rubber cylinder 104 is fixedly mounted on the upper end of the middle rubber cylinder 103, the lower rubber cylinder 105 is fixedly mounted on the lower end of the middle rubber cylinder 103, the lower mounting thread 106 is fixedly arranged on the lower outer end of the lower rubber cylinder 105, the upper mounting thread 107 is fixedly arranged on the upper outer end of the upper rubber cylinder 104, the lower limit ring 108 is movably mounted on the lower outer end of the lower rubber cylinder 105, the upper limit ring 109 is movably mounted on the upper outer end of the upper rubber cylinder 104, four mounting holes 110 are fixedly arranged on the upper end of the lower limit ring 108, and the lower surface of the upper limit ring 109 is also provided with Four mounting holes 110 are arranged, and a reinforcing rod 111 is movably mounted at the inner end of the mounting hole 110. The oil and gas well casing packer, through the provision of a middle rubber tube 103, an upper rubber tube 104 and a lower rubber tube 105, can ensure the air tightness of the joint between the lower tube 101 of the oil and gas well casing packer and the upper tube 102 of the oil and gas well casing packer when the device is in use, so that oil and gas will not leak through the joint between the lower tube 101 of the oil and gas well casing packer and the upper tube 102 of the oil and gas well casing packer when in use, and is safer when in use.

[0026] The first docking thread 112 is fixedly arranged at the inner end of the upper limit ring 109, the second docking thread 113 is fixedly arranged at the inner end of the lower limit ring 108, the upper limit ring 109 is installed at the upper outer end of the upper rubber cylinder 104 through the first docking thread 112 and the upper mounting thread 107, the lower limit ring 108 is installed at the lower outer end of the lower rubber cylinder 105 through the second docking thread 113 and the lower mounting thread 106, the upper and lower ends of the reinforcing rod 111 are respectively installed in the lower limit ring 108 and the upper limit ring 109 through the mounting hole 110, and the oil and gas well casing packer is provided with When in use, the lower limit ring 108 and the upper limit ring 109 can be installed on the upper outer end of the upper rubber cylinder 104 through the first docking thread 112 and the upper mounting thread 107, and the lower limit ring 108 can be installed on the lower outer end of the lower rubber cylinder 105 through the second docking thread 113 and the lower mounting thread 106. Then, the reinforcing rod 111 is installed inside the lower limit ring 108 and the upper limit ring 109 through the mounting hole 110, which greatly enhances the overall strength of the device and can withstand greater stress when in use, thereby better protecting the oil and gas well casing.

[0027] Working principle: The oil and gas well casing packer is provided with a lower limit ring 108 and an upper limit ring 109. When in use, the upper limit ring 109 can be installed on the upper outer end of the upper rubber cylinder 104 through the first docking thread 112 and the upper mounting thread 107, and the lower limit ring 108 can be installed on the lower outer end of the lower rubber cylinder 105 through the second docking thread 113 and the lower mounting thread 106. Then, the reinforcing rod 111 is installed inside the lower limit ring 108 and the upper limit ring 109 through the mounting hole 110, which greatly enhances the overall strength of the device. , can withstand greater stress when in use, so as to better protect the oil and gas well casing. The oil and gas well casing packer, through the provision of the middle rubber tube 103, the upper rubber tube 104 and the lower rubber tube 105, can ensure the air tightness of the joint between the lower tube 101 of the oil and gas well casing packer and the upper tube 102 of the oil and gas well casing packer when the device is in use, so that when in use, oil and gas will not leak through the joint between the lower tube 101 of the oil and gas well casing packer and the upper tube 102 of the oil and gas well casing packer, and it is safer when in use.

[0028] Finally, it should be noted that the above content is only used to illustrate the technical solution of the utility model, rather than to limit the protection scope of the utility model. Simple modifications or equivalent substitutions of the technical solution of the utility model by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the utility model.

Claims

1. An oil and gas well casing packer, comprising a main body (1), characterized in that: The main body mechanism (1) comprises a lower tube (101) of an oil and gas well casing packer, an upper tube (102) of an oil and gas well casing packer, an intermediate rubber tube (103), an upper rubber tube (104), a lower rubber tube (105), a lower mounting thread (106), an upper mounting thread (107), a lower limit ring (108), an upper limit ring (109), a mounting hole (110), a reinforcing rod (111), a first docking thread (112) and a second docking thread (113); the upper tube (102) of the oil and gas well casing packer is movably mounted on the upper end of the lower tube (101) of the oil and gas well casing packer, and the intermediate rubber tube (103) is movably mounted on the outer end of the docking point between the lower tube (101) of the oil and gas well casing packer and the upper tube (102) of the oil and gas well casing packer.

2. The oil and gas well casing packer according to claim 1, characterized in that: The upper rubber cylinder (104) is fixedly mounted on the upper end of the middle rubber cylinder (103), the lower rubber cylinder (105) is fixedly mounted on the lower end of the middle rubber cylinder (103), and the lower mounting thread (106) is fixedly arranged on the lower outer end of the lower rubber cylinder (105).

3. The oil and gas well casing packer according to claim 2, characterized in that: The upper mounting thread (107) is fixedly mounted on the upper outer end of the upper rubber cylinder (104), the lower limiting ring (108) is movably mounted on the lower outer end of the lower rubber cylinder (105), and the upper limiting ring (109) is movably mounted on the upper outer end of the upper rubber cylinder (104).

4. The oil and gas well casing packer according to claim 3, characterized in that: The four mounting holes (110) are fixedly arranged at the upper end of the lower limiting ring (108), the lower surface of the upper limiting ring (109) is also provided with four mounting holes (110), and the reinforcing rod (111) is movably mounted at the inner end of the mounting hole (110).

5. The oil and gas well casing packer according to claim 4, characterized in that: The first butt-jointed thread (112) is fixedly arranged at the inner end of the upper limit ring (109), and the second butt-jointed thread (113) is fixedly arranged at the inner end of the lower limit ring (108).

6. The oil and gas well casing packer according to claim 5, characterized in that: The upper limit ring (109) is installed on the upper outer end of the upper rubber cylinder (104) through the first docking thread (112) and the upper mounting thread (107), and the lower limit ring (108) is installed on the lower outer end of the lower rubber cylinder (105) through the second docking thread (113) and the lower mounting thread (106).

7. The oil and gas well casing packer according to claim 6, characterized in that: The upper and lower ends of the reinforcing rod (111) are respectively installed inside the lower limiting ring (108) and the upper limiting ring (109) through the installation holes (110).

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