Petroleum logging exploring tube protection structure
The design of the oil well logging pipe protection structure solves the problem of damage and loss of the pipe during the well's lowering and lifting process, achieving effective protection and safe lifting of the pipe.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- BEIJING AOYIER ENG TECH
- Filing Date
- 2025-06-13
- Publication Date
- 2026-04-28
AI Technical Summary
Oil well logging pipes are easily damaged by obstacles during the process of being lowered and raised in the well, and the connection between the cable and the pipe is prone to breakage, which can cause the pipe to fall into the well and increase the cost of retrieval.
A protective structure for oil well logging pipes was designed, including a protective cavity, an end anti-collision mechanism, and a cable anti-detachment mechanism. The protective cavity is provided with an opening on the outside, the end anti-collision mechanism buffers axial collisions, the cable anti-detachment mechanism prevents the connection from breaking, and the cable is fixed by a limiting ball structure of the armored inner tube and the outer protective cavity.
It effectively protects the probe from axial impact, prevents the cable from breaking at the connection point with the probe, avoids the probe from falling into the well, and ensures that logging work can proceed normally.
Smart Images
Figure CN224174075U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of oil well logging technology, and in particular to the protective structure of oil well logging probes. Background Technology
[0002] Oil well logging pipes are widely used in the oil drilling process, especially after drilling to the designed well depth, to obtain various petroleum geological and engineering technical data. Specifically, oil well logging pipes typically include a 3-axis high-temperature accelerometer, a 3-axis high-temperature fluxgate sensor, a power supply circuit, an acquisition and processing circuit, a temperature measurement circuit, a communication interface, and a well caliper power supply measurement circuit.
[0003] During the exploration process of oil well logging, since it is inside the well, the well wall or obstacles can cause bumps or even damage to the probe. Using a protective cover to effectively protect the oil well logging probe is a common method.
[0004] During the exploration process, it is necessary to lower and raise the probe pipe inside the well. During the lowering process, the probe pipe is easily bumped by obstacles, which is equivalent to axial impact on the probe pipe. During the raising process, the probe pipe is first pulled up by a cable reel above the well, and then pulled up by a cable. During this process, the connection between the cable and the probe pipe is prone to breakage, causing the probe pipe to be left in the well, resulting in subsequent probe pipe retrieval costs.
[0005] Therefore, based on the above-mentioned technical problems, those skilled in the art urgently need to develop protective structures for oil well logging pipes. Utility Model Content
[0006] The purpose of this invention is to provide a protective structure for oil well logging pipes in order to solve the above-mentioned problems.
[0007] To achieve the above objectives, this utility model provides the following technical solution:
[0008] The present invention relates to a protective structure for an oil well logging probe, comprising an oil well logging probe, one end of which is a cable, and further comprising:
[0009] A protective cavity tube is used to load the oil well logging probe, and one end of the protective cavity tube is flared.
[0010] An end-impact protection mechanism, wherein the end-impact protection mechanism is disposed on the flared end face of the protective cavity tube to buffer axial impacts on the end position of the protective cavity tube; and
[0011] A cable anti-detachment mechanism is provided between the oil logging probe and the cable to prevent the connection between the cable and the oil logging probe from breaking when the oil logging probe is pulled up by the cable.
[0012] Furthermore, a window is provided on the side surface of the protective cavity tube.
[0013] Furthermore, the end anti-collision mechanism includes a rigid inner support, which consists of multiple identical inner supports evenly distributed circumferentially on the flared end face of the protective cavity tube; and
[0014] The elastic anti-collision plate consists of multiple elastic anti-collision plates with the same structure and evenly distributed circumferentially on the flared end face of the protective cavity tube. Multiple rigid inner supports are distributed on the inner side of the multiple elastic anti-collision plates and are distributed one-to-one.
[0015] Furthermore, both the rigid inner support and the elastic anti-collision plate are arranged in an arc shape toward the axis of the protective cavity tube.
[0016] Furthermore, the cable anti-derailment mechanism includes an armored inner tube, which is fixedly connected to the oil logging probe and wraps around the cable; and
[0017] The outer protective cavity has one end fixedly connected to the oil well logging probe and the other end extending from the reverse end of the flared end of the protective cavity tube. The end of the outer protective cavity extending from the protective cavity tube has a clearance opening for the cable to pass through. The inner cavity structure of the outer protective cavity with the clearance opening is spherical. A limiting ball is provided inside the outer protective cavity. The limiting ball is locked in the spherical inner cavity structure of the outer protective cavity to prevent the limiting ball from detaching from the outer protective cavity through the clearance opening. An annular groove is formed on the side surface of the limiting ball for the cable to be wound.
[0018] Furthermore, the armored inner tube and the cable are sealed by applying adhesive.
[0019] Furthermore, the outer protective cavity and the protective cavity tube are connected by a thread.
[0020] In the above technical solution, the oil well logging pipe protection structure provided by this utility model has the following characteristics:
[0021] Beneficial effects:
[0022] This device provides protection outside the oil logging probe through a protective cavity tube, and its structure, including a window, does not affect the logging operation of the oil logging probe. At the same time, the end anti-collision mechanism buffers the axial impact received by the protective cavity tube during the descent, and the cable anti-detachment mechanism prevents the connection between the oil logging probe and the cable from being pulled apart by the pulling force, thus avoiding the situation where the probe is left in the well. Attached Figure Description
[0023] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.
[0024] Figure 1 A schematic diagram of the protective structure for oil well logging pipes provided in this embodiment of the utility model;
[0025] Figure 2 A front view of the protective structure for oil well logging pipe provided in an embodiment of this utility model;
[0026] Figure 3 A schematic diagram showing the distribution of elastic anti-collision plates in the protective structure of the oil well logging pipe provided in this embodiment of the utility model;
[0027] Figure 4 A schematic diagram of the limiting sphere of the oil well logging probe protection structure provided in this embodiment of the utility model.
[0028] Explanation of reference numerals in the attached figures:
[0029] 1. Oil well logging pipe; 2. Cable; 3. Protective cavity tube; 4. Window; 5. Rigid inner support; 6. Elastic anti-collision plate; 7. Armored inner tube; 8. Outer protective cavity; 9. Circumvention port; 10. Limiting ball; 11. Annular groove. Detailed Implementation
[0030] To enable those skilled in the art to better understand the technical solution of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings.
[0031] Please see Figure 1-4 The oil well logging probe protection structure includes an oil well logging probe 1, with a cable 2 at one end of the probe 1. This constitutes the basic structure of the oil well logging probe and its conductors or cables. Data is transmitted to the oil well logging probe 1 via the cable 2, which also enables the probe 1 to be lowered and raised. The structure also includes:
[0032] The protective cavity tube 3 is used to load the oil logging probe 1 to protect the oil logging probe 1. One end of the protective cavity tube 3 is flared so as not to affect the normal logging operation of the oil logging probe 1.
[0033] An end-impact protection mechanism is installed on the flared end face of the protective cavity tube 3 to buffer axial impacts on the end position of the protective cavity tube 3, thereby reducing damage to the oil logging probe tube 1 from axial impacts; and
[0034] The cable anti-detachment mechanism is installed between the oil logging probe 1 and the cable 2 to prevent the connection between the cable 2 and the oil logging probe 1 from breaking when the oil logging probe 1 is pulled up by the cable 2. This prevents the connection between the two from being broken by preventing the pulling force between the oil logging probe 1 and the cable 2, thus avoiding the situation where the probe is left in the well.
[0035] Furthermore, a window 4 is provided on the side surface of the protective cavity tube 3 so that the side part of the oil logging probe 1 can be connected to the outside through the window 4, thereby avoiding affecting the normal operation of the oil logging probe 1.
[0036] Furthermore, the end anti-collision mechanism includes a rigid inner support 5, which consists of multiple identical rigid inner supports 5 arranged circumferentially and evenly on the flared end face of the protective cavity tube 3; and
[0037] Elastic anti-collision plates 6 are multiple plates with the same structure and are evenly distributed circumferentially on the flared end face of the protective cavity tube 3. Multiple rigid inner supports 5 are distributed on the inner side of the multiple elastic anti-collision plates 6 and are distributed one by one.
[0038] Specifically, the length of the elastic anti-collision plate 6 is greater than the length of the rigid inner support 5, and the front end of the elastic anti-collision plate 6 is longer than the rigid inner support 5, so as to give full play to the elastic deformation of the elastic anti-collision plate 6, and thus buffer the collision in the axial direction of the protective cavity tube 3 through its elastic deformation, thereby reducing the axial collision with the oil well logging probe tube 1.
[0039] Furthermore, both the rigid inner support 5 and the elastic anti-collision plate 6 are arranged in an arc shape towards the axis of the protective cavity 3. Thus, when the elastic anti-collision plate 6 is subjected to axial impact, it elastically bends and deforms towards the axis of the protective cavity 3, thereby reducing the axial impact on the oil logging probe 1 through its elasticity. During this process, the rigid inner support 5 supports the inside of the elastic anti-collision plate 6, preventing the elastic anti-collision plate 6 from bending excessively, and further preventing the elastic anti-collision plate 6 from bending excessively to the point of touching the oil logging probe 1.
[0040] Furthermore, the cable anti-detachment mechanism includes an armored inner tube 7, which is fixedly connected to the oil logging probe 1 and wraps around the cable 2; and
[0041] The outer protective cavity 8 has one end fixedly connected to the oil well logging probe 1 and the other end extending from the reverse end of the flared end of the protective cavity tube 3. The end of the outer protective cavity 8 extending out of the protective cavity tube 3 has a clearance opening 9 for the cable 2 to pass through. The inner cavity structure of the outer protective cavity 8 with the clearance opening 9 is a spherical structure. A limiting ball 10 is provided inside the outer protective cavity 8. The limiting ball 10 is stuck in the spherical inner cavity structure of the outer protective cavity 8 to prevent the limiting ball 10 from detaching from the outer protective cavity 8 from the clearance opening 9. An annular groove 11 is provided on the side surface of the limiting ball 10 for the cable 2 to be wound.
[0042] Furthermore, the armored inner tube 7 and the cable 2 are sealed with adhesive.
[0043] Furthermore, the outer protective cavity 8 and the protective cavity tube 3 are connected by threads.
[0044] Specifically, the armored inner tube 7 is a conventional outer layer for cable protection. This device seals the inner tube 7 and cable 2 with adhesive to ensure a tight seal during probe lowering. Simultaneously, the outer protective cavity 8 and the protective cavity tube 3 are connected by threads to ensure the stability of the oil logging probe 1 within the protective cavity tube 3. The armored inner tube 7 provides the first stage of protection against breakage between the oil logging probe 1 and cable 2. The second stage of protection utilizes the limiting ball 10 within the outer protective cavity 8 to allow the cable 2 to wrap around the annular groove 11 on the limiting ball 10. During wrapping, a loosely coiled portion of the cable 2 remains within the outer protective cavity 8 between the armored inner tube 7 and the limiting ball 10, preventing pulling on the cable 2 and allowing it to extend from the clearance opening 9 into the outer protective cavity 8, thus lifting the oil logging probe 1 upwards. During this process, the limiting ball 10 is also pulled by the cable 2 and pressed against the inner cavity structure of the outer protective cavity 8, which has a spherical structure. This not only limits the limiting ball 10, but also presses the inner wall of the outer protective cavity 8 against the cable 2 wrapped around the limiting ball 10, thereby further fixing the position of the cable 2 on the limiting ball 10 and preventing the cable 2 from pulling on the connection between the two during the process of lifting the oil well logging probe 1.
[0045] In summary, this device provides protection outside the oil logging probe through a protective cavity tube, and its window-like structure does not affect the logging operation of the oil logging probe. At the same time, the end anti-collision mechanism buffers the axial impact received by the protective cavity tube during the lowering process, and the cable anti-detachment mechanism prevents the connection between the oil logging probe and the cable from being pulled apart by the pulling force, thus avoiding the situation where the probe is left in the well.
[0046] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.
Claims
1. A protective structure for an oil well logging probe, comprising an oil well logging probe (1), wherein one end of the oil well logging probe (1) is a cable (2), characterized in that, Also includes: A protective cavity tube (3) is used to load the oil logging probe (1), and one end of the protective cavity tube (3) is flared. An end anti-collision mechanism is provided on the flared end face of the protective cavity tube (3) to buffer axial collisions to the end position of the protective cavity tube (3); as well as A cable anti-detachment mechanism is provided between the oil well logging probe (1) and the cable (2) to prevent the connection between the cable (2) and the oil well logging probe (1) from breaking when the oil well logging probe (1) is pulled up by the cable (2).
2. The protective structure for oil well logging pipes according to claim 1, characterized in that, A window (4) is provided on the side surface of the protective cavity tube (3).
3. The oil well logging pipe protection structure according to claim 1, characterized in that, The end anti-collision mechanism includes a rigid inner support (5), wherein the rigid inner support (5) consists of multiple identical structures evenly distributed circumferentially on the flared end face of the protective cavity tube (3); and Elastic anti-collision plate (6), wherein multiple elastic anti-collision plates (6) are of the same structure and are evenly distributed in the circumference on the flared end face of the protective cavity tube (3), and multiple rigid inner supports (5) are distributed on the inner side of multiple elastic anti-collision plates (6) and are distributed one by one.
4. The oil well logging pipe protection structure according to claim 3, characterized in that, Both the rigid inner support (5) and the elastic anti-collision plate (6) are arranged in an arc shape facing the axis of the protective cavity tube (3).
5. The protective structure for oil well logging pipes according to claim 1, characterized in that, The cable anti-detachment mechanism includes an armored inner tube (7), which is fixedly connected to the oil logging probe (1) and wraps around the cable (2); and The outer protective cavity (8) is fixedly connected at one end to the oil well logging probe (1) and extends out from the reverse end of the flared end of the protective cavity tube (3). The end of the outer protective cavity (8) extending out of the protective cavity tube (3) has a clearance opening (9) for the cable (2) to pass through. The inner cavity structure of the outer protective cavity (8) with the clearance opening (9) is spherical. A limiting ball (10) is provided in the outer protective cavity (8). The limiting ball (10) is locked in the spherical inner cavity structure of the outer protective cavity (8) to prevent the limiting ball (10) from detaching from the outer protective cavity (8) from the clearance opening (9). An annular groove (11) is provided on the side surface of the limiting ball (10) for the cable (2) to be wound.
6. The protective structure for oil well logging pipes according to claim 5, characterized in that, The armored inner tube (7) and the cable (2) are sealed by injection of adhesive.
7. The protective structure for oil well logging pipes according to claim 5, characterized in that, The outer protective cavity (8) and the protective cavity tube (3) are connected by a thread.