A short-circuit safety protection device for cluster perforators

Abstract

This utility model relates to a short-circuit safety protection device for a clustered perforator, belonging to the technical field of perforation gun accessories. It connects and mates with the clustered perforator connector; it includes: a housing, a contact pin, an outer sleeve, a spring, and a pressure cap; the outer sleeve is threadedly connected to the center hole of the housing, and the pressure cap is threadedly connected to the center position of the end of the outer sleeve; the contact pin is slidably disposed within the cavity of the outer sleeve; the spring is located within the cavity, with one end abutting against the contact pin and the other end abutting against the pressure cap; the contact at the center of the clustered perforator connector forms an electrical circuit through the contact pin, spring, outer sleeve, and housing. This utility model can prevent abnormal explosion of the perforator when it encounters static electricity on the ground, providing a safety function, and can also prevent the entry of dust, impurities, and rainwater, providing a protective function.

Description

Technical Field

[0001] This utility model relates to the technical field of perforation gun accessories, specifically a short-circuit safety protection device for cluster perforators. Background Technology

[0002] A perforator is a perforating device for oil and gas wells, used to open a passage between the wellbore and the formation. A cluster perforator uses coded electronic switch technology, which is controlled by a surface instrument to selectively connect the detonator and the cable core to complete staged ignition and achieve wireless contactless rapid assembly.

[0003] After the perforator string is assembled, it needs to be left in the open air to wait for it to be used in the well. The waiting time may be short or long. There are many dangerous factors during the process of going down into the well, such as lightning and static electricity generated when people come into contact with it. When the static electricity is too large, it will cause the perforator to explode on the ground. A ground explosion of the perforator will be a major accident, and the resulting losses will be incalculable. Utility Model Content

[0004] The purpose of this invention is to design a short-circuit safety protection device for clustered perforators, which can prevent abnormal explosion of the perforator when it encounters static electricity on the ground, thus providing a safety function, and can also prevent the entry of dust, impurities, and rainwater, thus providing a protective function.

[0005] To achieve the above objectives, this utility model provides a short-circuit safety protection device for a cluster perforator, which is connected and cooperates with the cluster perforator connector; it includes: a housing, a contact pin, an outer sleeve, a spring, and a pressure cap; the outer sleeve is threadedly connected to the center hole of the housing, the pressure cap is threadedly connected to the center position of the end of the outer sleeve, the contact pin is slidably disposed in the cavity of the outer sleeve, the spring is located in the cavity, with one end abutting against the contact pin and the other end abutting against the pressure cap; the contact at the center of the cluster perforator connector forms an electrical circuit through the contact pin, spring, outer sleeve, and housing.

[0006] Furthermore, the housing is a cylindrical body with one end open and the other end closed. The inner hole at the left end of the housing is provided with threads and a sealing surface, which is connected to the cluster perforator connector and sealed by a sealing ring. The outer circle of the housing is provided with four hook wrench openings. A threaded opening is provided at the center of the right end of the housing.

[0007] Furthermore, the outer circle of the stylus is stepped, and the left end face is provided with a pit, which contacts the arc surface of the contact at the center of the clustering perforator connector.

[0008] Furthermore, the outer casing has a stepped hole at its center to accommodate the stylus and spring, and internal and external threads at its right end. The internal thread mates with the pressure cap, and the external thread mates with the threads of the housing. Four recesses are machined on the right end face of the outer casing for disassembly and assembly.

[0009] Furthermore, the installed spring has a certain amount of pre-compression.

[0010] Furthermore, the left end of the pressure cap is provided with a blind hole for positioning the spring, the thread on the outer circle matches the thread on the outer sleeve, and two recesses are provided on the right end face for disassembly and assembly.

[0011] The beneficial effects of this utility model are as follows: When this utility model is connected and fitted with the cluster perforator connector, the contact at the center of the cluster perforator connector forms an electrical circuit through the contact pin, spring, outer sleeve, and housing. This not only prevents the perforator from abnormally exploding when it encounters static electricity on the ground, but also prevents dust, impurities, and rainwater from entering, thus providing protection. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the shell of this utility model; Figure 3 This is a schematic diagram of the structure of the stylus of this utility model; Figure 4 This is a schematic diagram of the structure of the outer casing of this utility model; Figure 5 This is a schematic diagram of the structure of the spring of this utility model; Figure 6 This is a schematic diagram of the structure of the pressure cap of this utility model; Figure 7 This is a connection diagram of the present invention and the cluster perforator connector.

[0013] In the diagram: 1-housing, 2-contact pin, 3-outer jacket, 4-spring, 5-pressure cap, 6-mesh pattern, 100-short circuit safety protection device, 200-cluster perforator connector. Detailed Implementation

[0014] The technical solutions in the embodiments of this utility model are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0015] It should be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this application described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0016] In this application, the terms "upper," "lower," "left," "right," "front," "rear," "top," "bottom," "inner," "outer," "middle," "vertical," "horizontal," "lateral," and "longitudinal" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for the purpose of better describing this application and its embodiments, and are not intended to limit the indicated device, element, or component to having a specific orientation, or to be constructed and operated in a specific orientation.

[0017] Furthermore, in addition to indicating location or positional relationship, some of the aforementioned terms may also have other meanings. For example, the term "above" may also be used in some cases to indicate a certain dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0018] Furthermore, the terms "installation," "setup," "equipped with," "connection," "linking," and "socketing" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral structure; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium, or an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of these terms in this application based on the specific circumstances.

[0019] See Figures 1 to 6 This embodiment discloses a short-circuit safety protection device for a cluster perforator, which is connected and cooperates with the cluster perforator connector 200; it includes: a housing 1, a contact pin 2, an outer sleeve 3, a spring 4, and a pressure cap 5; the outer sleeve 3 is threadedly connected to the center hole of the housing 1, the pressure cap 5 is threadedly connected to the center position of the end of the outer sleeve 3, the contact pin 2 is slidably disposed in the cavity of the outer sleeve 3, the spring 4 is located in the cavity, and one end abuts against the contact pin 2, and the other end abuts against the pressure cap 5; the contact at the center of the cluster perforator connector 200 forms an electrical circuit through the contact pin 2, the spring 4, the outer sleeve 3, and the housing 1.

[0020] To further optimize the technical solution, the housing 1 is a cylindrical body made of aluminum alloy with a certain length and thickness, open at one end and closed at the other. The inner hole at the left end of the housing 1 is provided with threads and a sealing surface, which connects to the cluster perforator connector 200 and is sealed by a sealing ring. The outer circumference of the housing 1 is provided with four hook wrench openings for disassembling and assembling the housing 1. The center of the right end of the housing 1 is provided with a threaded opening, into which an outer sleeve 3 can be screwed, and the outer sleeve 3 is fixed to the housing 1. The outer side of the housing 1 is machined with a textured surface to increase friction and provide an anti-slip function.

[0021] To further optimize the technical solution, the contact pin 2 is made of H62 copper with low conductivity resistance. Its outer circumference is stepped, and its left end face has a recess that contacts the arc surface of the contact at the center of the clustering perforator connector 200. The recess on the left end face of the contact pin 2 increases the contact area between the two parts and provides greater stability and reliability to the center. The slightly larger outer diameter of the step near the right end of the contact pin 2 serves as a limiting element. In its free state, the contact pin 2 is constantly subjected to a leftward force by the force of the spring 4 within the outer sleeve 3. During operation, the left end of the contact pin 2 contacts the contact at the center of the clustering perforator connector 200 and is pushed to the right. Due to the force of the spring 4, the contact pin 2 remains in contact with the contact at the center of the clustering perforator after the displacement ends.

[0022] To further optimize the technical solution, the outer sleeve 3 is made of aluminum alloy, with a stepped hole in the center to accommodate the stylus 2 and the spring 4. The right end is provided with internal and external threads. The internal thread cooperates with the pressure cap 5, and the external thread cooperates with the thread of the housing 1. Four recesses are machined on the right end face of the outer sleeve 3 for disassembly and assembly.

[0023] The technical solution is further optimized. The spring 4 is made of 304 stainless steel and is compressible. It is installed in the hollow position of the outer jacket 3. Its left end contacts the contact pin 2 and its right end contacts the pressure cap 5. The spring 4 has a certain amount of pre-compression after installation.

[0024] To further optimize the technical solution, the pressure cap 5 is made of aluminum alloy, with a blind hole on the left end for positioning the spring 4, the thread on the outer circle matches the thread on the outer sleeve 3, and two recesses are provided on the right end face for disassembly and assembly.

[0025] pass Figure 7 It can be seen that after this utility model is connected and cooperated with the cluster perforator connector 200, the contact at the center of the cluster perforator connector 200 forms an electrical circuit through the contact pin 2, spring 4, outer sleeve 3, and housing 1, which short-circuits the contact at the center of the cluster perforator with its own external body. This can not only prevent the perforator from abnormally exploding when it encounters static electricity on the ground, thus effectively solving the problem of abnormal explosion of the perforator when it encounters static electricity on the ground, but also prevent dust, impurities, and rainwater from entering, thus providing protection.

[0026] The above description is merely a preferred embodiment of the present utility model and does not constitute any limitation on the technical scope of the present utility model. Therefore, any minor modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present utility model shall still fall within the scope of the technical solution of the present utility model.

Claims

1. A short-circuit safety protection device for a clustered perforator, characterized in that, It is connected and mates with the clustering perforator connector; it includes: a housing, a contact pin, an outer sleeve, a spring, and a pressure cap; the outer sleeve is threadedly connected to the center hole of the housing, the pressure cap is threadedly connected to the center position of the end of the outer sleeve, the contact pin is slidably disposed in the cavity of the outer sleeve, the spring is located in the cavity, with one end abutting against the contact pin and the other end abutting against the pressure cap; the contact at the center of the clustering perforator connector forms an electrical circuit through the contact pin, spring, outer sleeve, and housing.

2. The short-circuit safety protection device for a clustered perforator as described in claim 1, characterized in that, The housing is a cylindrical body with one end open and the other end closed. The inner hole at the left end of the housing is provided with threads and a sealing surface, which is connected to the cluster perforator connector and sealed by a sealing ring. The outer circle of the housing is provided with four hook wrench openings. A threaded opening is provided at the center of the right end of the housing.

3. A short-circuit safety protection device for a cluster perforator as described in claim 2, characterized in that, The outer circle of the stylus is stepped, and the left end face has a pit that contacts the arc surface of the contact at the center of the cluster perforator connector.

4. A short-circuit safety protection device for a clustered perforator as described in claim 3, characterized in that, The outer casing has a stepped hole at its center to accommodate the stylus and spring. The right end has internal and external threads. The internal thread mates with the pressure cap, and the external thread mates with the threads of the housing. Four recesses are machined on the right end face of the outer casing for disassembly and assembly.

5. A short-circuit safety protection device for a clustered perforator as described in claim 4, characterized in that, The installed spring has a certain amount of pre-compression.

6. A short-circuit safety protection device for a clustered perforator as described in claim 5, characterized in that, The left end of the pressure cap is provided with a blind hole for positioning the spring. The threads on the outer circle are matched with the threads on the outer sleeve. Two recesses are provided on the right end face for disassembly and assembly.

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