A circuit joint installation and dismounting device and a method of using the same

Abstract

This invention discloses a device for installing and removing circuit subs and its method of use, comprising a connecting rod, a rotating component, a connecting member, a retractable component, a pushing component, and a pulling component; the rotating component, the connecting member, and the retractable component are sequentially connected along the axial direction of the connecting rod; the rotating component is movably connected to the connecting rod; the connecting member is fixed circumferentially along the connecting rod and movably axially along the connecting rod; the inner diameter of the retractable component is larger than the minimum outer diameter of the pulling component and smaller than the maximum outer diameter of the pulling component; when installing or removing circuit subs, the pushing component or the pulling component is connected to the free end of the connecting rod near the retractable component. This device has a simple structure, reasonable design, convenient operation, saves manpower, is easy to carry, and enables on-site disassembly, inspection, and replacement of circuit subs, greatly improving work efficiency and ensuring the requirements of well drilling and logging parameters.

Description

Technical Field

[0001] This invention belongs to the technical field of installation and disassembly of internal components of drilling instruments, and relates to a device for installing and disassembling circuit sub-sections and its usage method. Background Technology

[0002] The instrument-while-drilling (AWD) layout involves installing the circuit sub inside the drill collar's waterhole. Due to the extreme complexity of downhole conditions—high temperature, high pressure, and strong vibration—the probability of WAWD instability is quite high. Most issues stem from poor connections and circuit board failures. The circuit sub is located in the middle of the drill collar, and for sealing and positioning purposes, it has four to six sealing grooves at both ends of its outer diameter. Installation requires linear motion to achieve positioning and sealing, resulting in significant resistance during disassembly and assembly. During installation and maintenance, the drill collar is placed in a fixed position, and a specialized hydraulic or pneumatic telescopic tool is used to move the circuit sub axially in a linear motion to install it or pull it out. Therefore, the disassembly and installation of the circuit sub requires returning to the base for inspection using specialized equipment. This reliance on specialized electrical tooling is significant; such tooling is bulky and expensive, unsuitable for general environments and well site conditions. It prevents immediate on-site disassembly, inspection, and troubleshooting, and the round trip can take a week or longer, negatively impacting drilling progress and instrument performance. Currently, the publicly available internal short section installation tooling structures of drilling instruments are generally quite complex, expensive, and large in size. They are highly dependent on hydraulic and pneumatic power tools, require certain factory facilities, and are inconvenient for users to carry and move. Summary of the Invention

[0003] To address the problems existing in the prior art, this invention provides a circuit sub installation and disassembly device and its usage method, thereby enabling on-site disassembly, inspection and replacement of circuit subs, greatly improving working efficiency and ensuring the requirements of well drilling and logging parameters.

[0004] This invention is achieved through the following technical solution:

[0005] A circuit stub installation and removal device includes a connecting rod, a rotating component, a connecting component, a retracting component, a pushing component, and a pulling component;

[0006] The rotating component, connecting component, and retractable component are sequentially connected along the axial direction of the connecting rod; the rotating component is movably connected to the connecting rod; the connecting component is fixed along the circumference of the connecting rod and movably connected along the axial direction of the connecting rod.

[0007] The inner diameter of the shrinking member is greater than the minimum outer diameter of the drawing member, and less than the maximum outer diameter of the drawing member;

[0008] When installing the circuit section, the pusher is connected to the free end of the connecting rod near the retractor.

[0009] When disassembling the circuit section, the puller is connected to the free end of the connecting rod near the retractable part.

[0010] Preferably, a cavity is provided between the connecting rod and the connecting member, and the shrinking member is disposed in the cavity.

[0011] Preferably, the connecting rod has an external thread on its outer wall, and the rotating component has an internal thread on its interior, with the connecting rod and the rotating component being threadedly connected.

[0012] Preferably, the rotating component is provided with a plurality of first hand-held portions; the plurality of first hand-held portions are evenly spaced along the circumference of the rotating component.

[0013] Preferably, a semi-circular limiting member is provided at the connection between the rotating member and the connecting member.

[0014] Preferably, a snap-fit ​​groove is provided along the axial direction of the connecting rod, and a snap-fit ​​block is provided on the connecting member, the snap-fit ​​block being snapped into the snap-fit ​​groove.

[0015] Preferably, the connector is provided with a plurality of second hand-held portions, which are spaced apart along the circumferential direction of the connector.

[0016] Preferably, one end of the drawing member is provided with a plurality of elastic plates, which are evenly arranged along the circumference of the drawing member; the plurality of elastic plates can contract or expand along the radial direction of the drawing member.

[0017] Preferably, each of the free ends of the plurality of elastic sheets is provided with a snap-fit ​​portion, which is snap-fitted with the circuit short section.

[0018] The method of using the above-mentioned circuit segment installation and removal device is characterized in that, when removing the circuit segment, the connecting member and the pulling member are connected to the drill collar and the circuit segment respectively, the rotating member is rotated in the first direction, and when the pulling member retracts into the retracting member, and the distance between the circuit segment and the end face of the drill collar is 80-120mm, the pulling member is separated from the circuit segment, and the connecting member is separated from the drill collar, the circuit segment is removed, and the removal of the circuit segment is completed;

[0019] When installing the circuit short section, connect the connector and the pusher to the drill collar and the circuit short section respectively, rotate the rotating part in the second direction until the circuit short section no longer moves, then separate the connector from the drill collar and separate the pusher from the circuit short section to complete the installation of the circuit short section;

[0020] The first direction is opposite to the second direction.

[0021] Compared with the prior art, the present invention has the following beneficial technical effects:

[0022] A device for installing and removing circuit subs is disclosed. A connector is attached to the drill collar, and a pusher or puller is attached to the circuit sub. The rotation of a rotating component moves the pusher and puller away from or towards the connector, thus enabling the installation and removal of the circuit sub on the drill collar. During disassembly, a retractable component gradually retracts the puller, and a compression elastic plate facilitates separation of the circuit sub at a suitable location. This allows for installation and removal of circuit subs even with a small team or even just one worker. The device is simple in structure, rationally designed, easy to operate, saves manpower, and is portable. It enables on-site disassembly, inspection, and replacement of circuit subs, greatly improving work efficiency and ensuring the requirements of well drilling and logging parameters are met.

[0023] Furthermore, a cavity is provided between the connecting rod and the connecting member, and the shrinking member is set in the cavity, which is beneficial for fixing the shrinking member.

[0024] Furthermore, the first hand-held part facilitates the rotation of the rotating component.

[0025] Furthermore, the semi-ring limiting component is beneficial for axially limiting the rotating component.

[0026] Furthermore, the locking groove on the connecting rod and the locking block on the connecting piece effectively achieve the circumferential limiting function of the connecting piece on the connecting rod.

[0027] Furthermore, the second hand-held part facilitates the connection between the connector and the drill collar during use.

[0028] Furthermore, the elastic sheet facilitates the connection and separation of the pull-out component and the circuit short section.

[0029] Furthermore, the snap-fit ​​design on the elastic sheet facilitates the connection and separation of the pull-out component and the circuit short section. Attached Figure Description

[0030] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of the present invention and should not be regarded as a limitation on the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0031] Figure 1 This is a schematic diagram of the structure of a circuit short section mounting and dismounting device according to the present invention;

[0032] Figure 2 This is a schematic diagram of the connecting rod in this invention;

[0033] Figure 3 This is a schematic diagram of the connector structure in this invention;

[0034] Figure 4 This is a schematic diagram of the rotating component in this invention;

[0035] Figure 5 This is a schematic diagram of the structure of the drawing component in this invention;

[0036] Figure 6 This is a connection diagram of the circuit section installation and removal device of the present invention during use.

[0037] Among them: 1. Connecting rod, 11. Snap-fit ​​groove, 2. Rotating part, 21. Mounting groove, 22. Bearing mounting position, 3. Snap-fit ​​block, 4. Connecting part, 41. Second hand-held part, 5. Retracting part, 6. Pushing part, 7. Pulling part, 71. Elastic sheet, 72. Snap-fit ​​part, 8. First hand-held part, 9. Partial circuit section. Detailed Implementation

[0038] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0039] Therefore, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely to illustrate selected embodiments of the invention. All other embodiments obtained by those skilled in the art based on the embodiments of the invention without inventive effort are within the scope of protection of the invention.

[0040] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0041] In the description of the embodiments of the present invention, it should be noted that if terms such as "upper," "lower," "horizontal," or "inner" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of the invention is in use, they are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of the present invention. Furthermore, terms such as "first" and "second" are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0042] Furthermore, the use of the term "horizontal" does not imply that the component must be absolutely horizontal, but rather that it can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0043] In the description of the embodiments of the present invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; 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; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in the present invention according to the specific circumstances.

[0044] The present invention will now be described in further detail with reference to the accompanying drawings:

[0045] like Figure 1As shown, a circuit stub installation and removal device includes a connecting rod 1, a rotating component 2, a connecting component 4, a retractable component 5, a pushing component 6, and a pulling component 7. The rotating component 2, the connecting component 4, and the retractable component 5 are sequentially connected along the axial direction of the connecting rod 1. The rotating component 2 is movably connected to the connecting rod 1. The connecting component 4 is fixed circumferentially along the connecting rod 1 and movably axially along the connecting rod 1, that is, the connecting rod 1 is fixed circumferentially in the direction of the connecting component 4 and movably axially in the direction of the connecting component 4. The inner diameter of the retractable component 5 is larger than the minimum outer diameter of the pulling component 7 and smaller than the maximum outer diameter of the pulling component 7. When installing the circuit stub, the pushing component 6 is connected to the free end of the connecting rod 1 near the retractable component 5. When removing the circuit stub, the pulling component 7 is connected to the free end of the connecting rod 1 near the retractable component 5. A cavity is provided between the connecting rod 1 and the connecting component 4, and the retractable component 5 is disposed in the cavity. The connecting rod 1 has an external thread on its outer wall, and the rotating part 2 has an internal thread. The connecting rod 1 is threadedly connected to the rotating part 2. The rotating part 2 has a plurality of first hand grips 8. The plurality of first hand grips 8 are evenly spaced along the circumference of the rotating part 2. The connecting part 4 has a plurality of second hand grips 41, which are spaced along the circumference of the connecting part 4. The connecting rod 1 can be a lead screw with a threaded surface for easy use. The rotating part 2 can be a shaft. The locking block 3 can be a guide block for limiting and guiding. The connecting part 4 can be a body, and both the first hand grips 8 and the second hand grips 41 can be handles. The connecting part 4 has threads on its exterior for easy connection with the drill collar during use.

[0046] like Figure 1 , 2 As shown, a snap-fit ​​groove 11 is provided along the axial direction of the connecting rod 1, such as... Figure 1 , 3 As shown, the connector 4 is provided with a snap-fit ​​block 3, which snaps into the snap-fit ​​groove 11. Preferably, snap-fit ​​grooves 11 are provided on both radially symmetrical sides of the connecting rod 1, or a plurality of snap-fit ​​grooves 11 are provided symmetrically along the circumference of the connecting rod 1. Correspondingly, a plurality of snap-fit ​​blocks 3 are provided on the connector 4. The plurality of snap-fit ​​blocks 3 are matched with the plurality of snap-fit ​​grooves 11, which can effectively restrict the circumferential rotation of the connecting rod 1 when it moves along the circumferential direction of the connector 4, that is, fully ensure that the connecting rod 1 can only move forward or backward in a straight line in the axial direction.

[0047] like Figure 1 , 4As shown, one end of the drawing member 7 is provided with a plurality of elastic plates 71, which are evenly arranged along the circumference of the drawing member 7; the elastic plates 71 can contract or expand along the radial direction of the drawing member 7. Each of the free ends of the elastic plates 71 is provided with a snap-fit ​​portion 72, which snaps into the circuit short section. The elastic plates 71 may be distributed on the drawing member 7 in a conical or umbrella-like structure.

[0048] like Figure 5 As shown, the rotating component 2 has an annular mounting groove 21, and the connecting component 4 has an annular stepped groove on the side connected to the rotating component 2. The mounting groove 21 and the stepped groove are connected by semi-ring limiting members, which are two semi-ring components. During use, the two semi-ring components sink into the stepped groove on the connecting component 4 and are fixed with screws. Simultaneously, the inner diameters of the two semi-rings are engaged in the mounting groove 21 on the rotating component 2, and the outer diameters are engaged in the inner wall of the stepped groove. The two semi-ring components axially limit the rotating component 2, preventing axial displacement during rotation. The installation process of the two semi-rings is as follows: first, the rotating component 2 is inserted into the connecting component 4; then, the semi-ring limiting members are inserted radially from both sides of the rotating component 2, causing them to sink into the stepped groove on the connecting component 4, and are axially fixed with screws. The rotating component 2 has a clearance fit with the inner hole of the connecting component 4, effectively allowing the connecting component 4 to remain stationary in the circumferential direction while the rotating component 2 rotates, and simultaneously allowing the connecting rod 1 to move in the axial direction of the connecting component 4. Additionally, the outer wall of the rotating component 2 is provided with a bearing mounting position 22, where a bearing is installed, making the rotation of the rotating component 2 more convenient. Preferably, three sets of bearings can be arranged side-by-side in the axial direction of the bearing mounting position 22.

[0049] like Figure 6 As shown, the method of using the circuit segment installation and removal device in this invention is as follows: when removing the circuit segment, the connecting member 4 and the pulling member 7 are connected to the drill collar and the circuit segment respectively. Specifically, the pulling member 7 is connected to the circuit segment portion 9, and the rotating member 2 is rotated in the first direction. When the pulling member 7 retracts into the retracting member 5, and the distance between the circuit segment and the end face of the drill collar is 80-120mm, preferably 100mm, the pulling member 7 is separated from the circuit segment, and the connecting member 4 is separated from the drill collar. The circuit segment is then removed, and the removal of the circuit segment is completed.

[0050] When installing the circuit section, the connector 4 and the pusher 6 are connected to the drill collar and the circuit section respectively. The rotating part 2 is rotated in the second direction until the circuit section no longer shifts. Preferably, a mark can be set on the connecting rod 1 according to the size of the installation instrument. When the mark on the connecting rod 1 is flush with the end face of the connector during the pushing process, the circuit section is considered to be installed in place. Therefore, in actual operation, the position of the mark can be used to more accurately determine whether the circuit section is installed in place. When it is confirmed that the circuit section is installed in place, the connector 4 is separated from the drill collar and the pusher 6 is separated from the circuit section to complete the installation of the circuit section. The first direction is opposite to the second direction. The first direction can be clockwise and the corresponding second direction is counterclockwise.

[0051] The purpose of this invention is to address the limitations of existing technologies by proposing a simple, easy-to-manufacture, and adaptable tool for installing and removing circuit subs, suitable for general environments and well site conditions, and convenient to use and move. Accompanying instruments are also included, enabling rapid and accurate installation and removal processes in general site environments and well site conditions. This invention integrates functions such as connection, limiting, pulling, and propulsion into one unit. It is compact and lightweight, with an internal bearing mounting shoulder and three bearings, ensuring smooth rotation and effortless operation. When pulling out the circuit sub, the main body is threaded to the drill collar. The shaft is rotated counterclockwise, and the guide block keeps the screw moving in a straight line axially. Once the elastic flared end of the pulling component engages with the tail connection structure of the circuit sub, the shaft is rotated clockwise. At this point, the screw, pulling component, and circuit sub move backward in a straight line together. The retractor gradually contracts the elastic expansion plate of the puller until the circuit sub is at an appropriate distance from the drill collar end face, causing the puller to disengage from the circuit sub, completing the entire circuit sub removal process. When installing the circuit section, first remove the puller from the lead screw, replace it with the pusher, connect the body to the drill collar by thread, rotate the shaft counterclockwise, and the lead screw, pusher block and circuit section will move forward axially in a straight line until the installation position is reached.

[0052] The above are merely preferred embodiments of the present invention and are not intended to limit the present invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A device for installing and removing circuit stubs, characterized in that, It includes a connecting rod (1), a rotating part (2), a connecting part (4), a retracting part (5), a pushing part (6), and a pulling part (7); The rotating component (2), the connecting component (4), and the retractable component (5) are sequentially connected along the axial direction of the connecting rod (1); the rotating component (2) is movably connected to the connecting rod (1); the connecting component (4) is fixed along the circumference of the connecting rod (1) and movably connected along the axial direction of the connecting rod (1); The inner diameter of the shrinking member (5) is greater than the minimum outer diameter of the drawing member (7) and less than the maximum outer diameter of the drawing member (7); When installing the circuit section, the pusher (6) is connected to the free end of the connecting rod (1) on the side near the retractor (5); When the circuit section is disassembled, the pull member (7) is connected to the free end of the connecting rod (1) on the side near the retractable member (5); A snap-fit ​​groove (11) is provided along the axial direction of the connecting rod (1), and a snap-fit ​​block (3) is provided on the connecting member (4), and the snap-fit ​​block (3) is snap-fitted with the snap-fit ​​groove (11); One end of the drawing member (7) is provided with a plurality of elastic plates (71), which are uniformly arranged along the circumference of the drawing member (7); the plurality of elastic plates (71) can contract or expand along the radial direction of the drawing member (7).

2. The circuit joint installation and removal device according to claim 1, characterized in that, A cavity is provided between the connecting rod (1) and the connecting member (4), and the shrinking member (5) is disposed in the cavity.

3. The circuit stub installation and removal device according to claim 1, characterized in that, The connecting rod (1) has an external thread on its outer wall, and the rotating part (2) has an internal thread inside. The connecting rod (1) and the rotating part (2) are threaded together.

4. The circuit joint installation and removal device according to claim 1, characterized by The rotating component (2) is provided with a plurality of first hand-held parts (8); the plurality of first hand-held parts (8) are evenly spaced along the circumference of the rotating component (2).

5. The circuit joint installation and removal device according to claim 1, characterized in that, A semi-circular limiting member is provided at the connection between the rotating part (2) and the connecting part (4).

6. The circuit section mounting and demounting device according to claim 1, characterized in that The connector (4) is provided with a plurality of second hand-held parts (41), which are spaced apart along the circumferential direction of the connector (4).

7. The circuit short section mounting and demounting device according to claim 1, characterized by Each of the free ends of the plurality of elastic sheets (71) is provided with a snap-fit ​​part (72), which is snap-fitted to the circuit short section.

8. The method of using the circuit joint installation and removal device according to any one of claims 1 to 7, characterized in that, When disassembling the circuit short section, connect the connector (4) and the puller (7) to the drill collar and the circuit short section respectively, rotate the rotating part (2) in the first direction, and when the puller (7) retracts into the retracting part (5), and the distance between the circuit short section and the end face of the drill collar is 80~120mm, separate the puller (7) from the circuit short section and separate the connector (4) from the drill collar, take out the circuit short section, and complete the disassembly of the circuit short section; When installing the circuit short section, connect the connector (4) and the pusher (6) to the drill collar and the circuit short section respectively, rotate the rotating part (2) in the second direction until the circuit short section no longer moves, then separate the connector (4) from the drill collar and separate the pusher (6) from the circuit short section to complete the installation of the circuit short section; The first direction is opposite to the second direction.

Images