Well casing unblocking device

Abstract

The utility model provides a well casing unblocking device which comprises an upper connecting pipe and a lower pressure shell, the inner side of the upper connecting pipe is provided with a connecting cavity used for being communicated with an internal petroleum connecting pipe and an external petroleum connecting pipe and leading petroleum in, and the outer side of the left end of the upper connecting pipe is provided with an upper pressure cover used for conducting pressure protection on the upper end of the internal petroleum connecting pipe. A plurality of groups of upper fastening shells which are used for being fixedly connected with an external limiting frame are arranged on the outer side of the upper end of the upper pressure cover, and compared with the prior art, the pressure protection device has the following beneficial effects that the upper pressure cover and the lower pressure shell are used for carrying out pressure protection on the upper side and the lower side of an internal petroleum conduit; the upper pressure cover and the lower pressure shell are limited and protected by using the lower fastening shell and the upper fastening shell, the interior of the internal petroleum connecting pipe is dredged by using the impurity guide twisting piece, congestion is prevented, and the rotating shaft and the impurity guide twisting piece are driven to rotate by using the driving head.

Description

Technical Field

[0001] The utility model belongs to the technical field of petroleum well pipes and relates to a well pipe unblocking device. Background Art

[0002] Oil well pipes are important equipment in the oil industry, mainly used for long-distance transportation of liquids such as oil and natural gas. The design and installation of oil well pipes need to consider various factors, including well depth, groundwater level, underground geological conditions, etc. These pipes can be used to transport oil and natural gas, or as part of a pipeline transportation system to transport liquids from the extraction site to processing plants, storage tank stations and users along the line. Oil well pipe blockage is a common and serious problem in the process of oil extraction and transportation, which may have a series of adverse consequences.

[0003] Oil well pipe blockage directly leads to reduced oil extraction efficiency. When the well pipe is blocked, oil cannot flow out normally, which means that extraction work must be suspended or slowed down for cleaning and repair. This not only wastes valuable time and resources, but also increases extraction costs.

[0004] Blocked well pipes may also cause safety issues. For example, when the pressure inside the well pipe is too high, it may cause a blowout accident, which will not only damage the equipment, but also pose a threat to the environment and personnel safety. In addition, if the blockage is caused by corrosion or breakage, the structural integrity of the well pipe itself may be compromised, further increasing the safety risk. Therefore, a well pipe unblocking device is urgently needed to solve the above problems. Utility Model Content

[0005] In view of the deficiencies in the prior art, the utility model aims to provide a well pipe unblocking device to solve the problems raised in the above-mentioned background technology.

[0006] The utility model is realized by the following technical scheme: a well pipe unblocking device, comprising: an upper access pipe and a lower pressure shell, wherein the inner side of the upper access pipe is provided with an access cavity for communicating with internal and external oil pipes and introducing oil;

[0007] An upper pressure cover for pressure protection of the upper end of the internal oil pipe is provided on the outer side of the left end of the upper access pipe, and a plurality of groups of upper fastening shells for connecting and fixing with the external limit frame are provided on the outer side of the upper end of the upper pressure cover;

[0008] The upper end of the upper pressure hood is provided with several groups of quick maintenance covers for the convenience of workers to quickly and without disassembly maintenance. The lower end of the upper pressure hood is provided with a lower pressure shell for supporting the internal oil pipe. The upper and lower sides of the internal oil pipe can be pressure-protected by using the upper pressure hood and the lower pressure shell.

[0009] As a preferred embodiment, the lower end of the lower pressure shell is provided with several groups of lower fastening shells for connecting and fixing the external limit frame, and the inner side of the upper end of the lower pressure shell is provided with a group of pipe grooves for placing the internal oil pipes, so that the upper pressure cover and the lower pressure shell can be limited and protected by using the lower fastening shells and the upper fastening shells.

[0010] As a preferred embodiment, a group of debris guide pieces are provided in the middle position of the internal oil pipe for preventing debris from clogging the internal oil pipe. A group of rotating shafts for rotating the debris guide pieces are provided in the middle position of the debris guide pieces. The internal oil pipe can be unblocked by using the debris guide pieces to prevent congestion.

[0011] As a preferred embodiment, a group of limit fixing frames for connecting and fixing with limit clamps are provided at the lower end of each group of upper fastening shells, a group of limit clamps for connecting and fixing with the connecting shaft are provided at the lower end of the limit fixing frames, and a group of inner bearings for movable rotation with the connecting shaft are provided on the inner side of the limit clamps.

[0012] As a preferred embodiment, every two groups of the guide strands are connected by a group of connecting shafts, and a group of positioning seats for limiting and connecting the upper pressure shell and the lower pressure shell are provided on the left side of the upper pressure cover, and a group of driving heads for limiting and rotating the leftmost rotating shaft are provided in the middle position inside the positioning seat, which can drive the rotating shaft and the guide strands to rotate by using the driving heads.

[0013] As a preferred embodiment, a group of motors for driving the driving head to actively rotate are provided on the left side of the driving head, the motor is fixed to the positioning seat by bolts, and the positioning seat is fixed to the upper pressure cover and the lower pressure shell by bolts.

[0014] As a preferred embodiment, a group of lower access pipes for extracting the oil from the internal oil conduit are provided at the lower left end of the lower pressure shell, and the interior of the lower access pipe and the interior of the upper access pipe are both connected to the interior of the internal oil conduit.

[0015] After adopting the above technical scheme, the beneficial effects of the utility model are as follows: by using the upper pressure cover and the lower pressure shell to perform pressure protection on the upper and lower sides of the internal oil pipe, by using the lower fastening shell and the upper fastening shell to perform limit protection on the upper pressure cover and the lower pressure shell, by using the debris guide piece to dredge the inside of the internal oil pipe to prevent congestion, and by using the driving head to drive the rotating shaft and the debris guide piece to rotate. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0017] Figure 1 This is a schematic diagram of the structure of a well pipe unblocking device according to the utility model, viewed from the left front oblique side;

[0018] Figure 2 It is a schematic diagram of the structure of the left oblique front side top view of the debris guide piece in the well pipe unblocking device of the utility model;

[0019] Figure 3 This is a schematic diagram of the structure of a well pipe unblocking device according to the utility model, viewed from the right rear oblique side;

[0020] Figure 4 This is an enlarged view of the structure at point A in a well pipe unblocking device of the utility model;

[0021] In the figure: 100-upper access pipe, 110-access cavity, 120-upper pressure cover, 130-upper fastening shell, 140-lower fastening shell, 150-quick maintenance cover, 160-positioning seat, 170-driving head, 180-lower access pipe, 190-guide piece, 200-connecting shaft, 210-limiting clamp ring, 220-inner bearing, 230-limiting fixing frame, 240-pipe groove, 250-lower pressure shell. DETAILED DESCRIPTION

[0022] 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 of 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.

[0023] See also Figure 1-Figure 4 A well pipe unblocking device comprises: an upper access pipe 100, an upper pressure cover 120, a guide piece 190 and a lower pressure shell 250. The upper access pipe 100 is provided with an access cavity 110 inside for communicating with internal and external oil pipes and introducing oil;

[0024] An upper pressure cover 120 for protecting the upper end of the internal oil pipe is disposed on the outer side of the left end of the upper access pipe 100, and a plurality of upper fastening shells 130 for connecting and fixing with the external limit frame are disposed on the outer side of the upper end of the upper pressure cover 120;

[0025] A plurality of quick-maintenance covers 150 are provided inside the upper end of the upper pressure cover 120 for the convenience of workers to perform quick and non-disassembly maintenance on the interior. A lower pressure shell 250 is provided at the lower end of the upper pressure cover 120 for supporting the internal oil pipe. The upper and lower sides of the internal oil pipe can be pressure-protected by using the upper pressure cover 120 and the lower pressure shell 250.

[0026] The lower end of the lower pressure shell 250 is provided with several groups of lower fastening shells 140 for connecting and fixing the external limit frame, and the inner side of the upper end of the lower pressure shell 250 is provided with a group of pipe grooves 240 for placing the internal oil pipes. The upper pressure cover 120 and the lower pressure shell 250 can be limited and protected by using the lower fastening shells 140 and the upper fastening shells 130.

[0027] A group of debris guide pieces 190 for preventing debris from clogging the internal oil pipe is provided in the middle position of the internal oil pipe. A group of rotating shafts for rotating the debris guide pieces 190 are provided in the middle position of the debris guide pieces 190. The debris guide pieces 190 can be used to clear the inside of the internal oil pipe to prevent congestion.

[0028] A group of limiting fixing frames 230 for connecting and fixing with the limiting clamping ring 210 are provided at the lower end of each group of upper fastening shells 130. A group of limiting clamping rings 210 for limiting connection and fixing with the connecting shaft 200 are provided at the lower end of the limiting fixing frames 230. A group of inner bearings 220 for movable rotation with the connecting shaft 200 are provided on the inner side of the limiting clamping ring 210.

[0029] Every two groups of guide blades 190 are connected by a group of connecting shafts 200. A group of positioning seats 160 for limiting and connecting the upper pressure shell and the lower pressure shell 250 is provided on the left side of the upper pressure cover 120. A group of driving heads 170 for limiting and rotating the leftmost rotating shaft is provided in the middle position inside the positioning seats 160. The rotating shaft and the guide blades 190 can be driven to rotate by using the driving heads 170.

[0030] A group of motors for driving the driving head 170 to actively rotate is provided on the left side of the driving head 170. The motor is fixed to the positioning seat 160 by bolts, and the positioning seat 160 is fixed to the upper pressure cover 120 and the lower pressure shell 250 by bolts.

[0031] A set of lower access pipes 180 for extracting the oil from the internal oil conduit is provided at the lower left end of the lower pressure shell 250. The interior of the lower access pipe 180 and the interior of the upper access pipe 100 are both connected to the interior of the internal oil conduit.

[0032] See also Figure 1-Figure 4As the first embodiment of the utility model: In order to solve the problem that the blockage of the oil well pipe will directly lead to the reduction of oil production efficiency, when the well pipe is blocked, the oil cannot flow out normally, which means that the production work must be suspended or slowed down for cleaning and repair. This not only wastes precious time and resources, but also increases the problem of production costs. First, the staff seals and connects the external oil through the upper access pipe 100, and introduces the external oil into the internal oil pipe through the access cavity 110. When the internal oil pipe is blocked by flocculent debris in the oil, a group of motors for driving the driving head 170 to actively rotate are provided on the left side of the driving head 170. The motor drives the driving head 170 to rotate, and the driving head 170 rotates to drive the rotating shaft and several groups of guide pieces 190 to rotate. At the same time, a group of guide pieces 190 for preventing the internal debris of the internal oil pipe from being blocked is provided in the middle position of the internal oil pipe, and a group of rotating shafts for rotating the guide pieces 190 are provided in the middle position of the guide pieces 190. The guide pieces 190 can directly guide the internal oil pipe and prevent congestion in the internal oil pipe.

[0033] See also Figure 1-Figure 4 , as the second embodiment of the utility model: based on the description in the above embodiment, further, since an upper pressure cover 120 for pressure protection of the upper end of the internal oil connecting pipe is provided on the outer side of the left end of the upper access pipe 100, and a lower pressure shell 250 for supporting the internal oil connecting pipe is provided at the lower end of the upper pressure cover 120, when used in a downhole environment, the upper pressure cover 120 and the lower pressure shell 250 are used to perform pressure protection on the upper and lower sides of the internal oil conduit.

[0034] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A well pipe unblocking device, comprising: An upper access pipe (100), an upper pressure cover (120), a guide blade (190) and a lower pressure shell (250), wherein the upper access pipe (100) is provided with an access cavity (110) on the inner side thereof for communicating with internal and external oil pipes and introducing oil; An upper pressure cover (120) for protecting the upper end of the internal oil pipe connection from pressure is provided on the outer side of the left end of the upper access pipe (100); and a plurality of groups of upper fastening shells (130) for connecting and fixing with an external limit frame are provided on the outer side of the upper end of the upper pressure cover (120); The upper end of the upper pressure cover (120) is provided with a plurality of groups of quick maintenance covers (150) for workers to quickly and without disassembly perform maintenance on the interior thereof, and the lower end of the upper pressure cover (120) is provided with a lower pressure shell (250) for supporting the internal oil pipe.

2. A well pipe unblocking device according to claim 1, characterized in that: The lower end of the lower pressure shell (250) is provided with a plurality of groups of lower fastening shells (140) for connecting and fixing the external limit frame, and the inner side of the upper end of the lower pressure shell (250) is provided with a group of pipe grooves (240) for placing the internal oil pipe.

3. A well pipe unblocking device according to claim 2, characterized in that: A group of debris guide pieces (190) for preventing debris from blocking the internal oil pipe is provided at the middle position inside the internal oil pipe, and a group of rotating shafts for rotating the debris guide pieces (190) is provided at the middle position of the debris guide pieces (190).

4. A well pipe unblocking device according to claim 1, characterized in that: A group of limiting fixing frames (230) for connecting and fixing with the limiting clamp ring (210) are provided at the lower end of each group of upper fastening shells (130); a group of limiting clamp rings (210) for limiting connection and fixing with the connecting shaft (200) are provided at the lower end of the limiting fixing frames (230); a group of inner bearings (220) for movably rotating with the connecting shaft (200) are provided inside the limiting clamp rings (210).

5. A well pipe unblocking device according to claim 3, characterized in that: Every two groups of the guide blades (190) are connected via a group of connecting shafts (200); a group of positioning seats (160) for limiting and connecting the upper pressure shell and the lower pressure shell (250) is provided on the left side of the upper pressure cover (120); a group of driving heads (170) for limiting and rotating the leftmost rotating shaft is provided in the middle position inside the positioning seat (160).

6. A well pipe unblocking device according to claim 5, characterized in that: A group of motors for driving the driving head (170) to actively rotate are provided on the left side of the driving head (170); the motors are fixed to the positioning seat (160) by bolts; and the positioning seat (160) is fixed to the upper pressure cover (120) and the lower pressure shell (250) by bolts.

7. A well pipe unblocking device according to claim 6, characterized in that: A group of lower access pipes (180) for extracting the oil from the internal oil conduit are provided at the lower left end of the lower pressure shell (250); the interior of the lower access pipes (180) and the interior of the upper access pipes (100) are both in communication with the interior of the internal oil conduit.

Images