Well logging cable roller for deep well

Abstract

The logging cable roller comprises a roller body, the middle of the roller body is hollow, the two ends of the roller body are open, shaft head cover plates are embedded in the openings in the two ends of the roller body, the surfaces of the shaft head cover plates are flush with the surface of the roller body, and a shaft head is welded to the center of each shaft head cover plate; hub devices are welded to the side surfaces of the two ends of the roller body, hub sealing plates are connected to the peripheries of the hub devices and clamped to the periphery of the roller body, and a plurality of circular supporting plates are arranged in the roller body. The problems that in the prior art, a shaft head device and a drum body are not stably designed, and the situation that a drum deforms and cracks frequently occurs during well logging are solved.

Description

Technical Field

[0001] The invention belongs to the technical field of oilfield logging equipment, and in particular relates to a logging cable drum used in deep wells. Background Art

[0002] Logging equipment is of great significance to oil exploration and development. Logging cable drums are widely used in the logging industry. Oil logging operations require the use of cables to transport various instruments into the well and transmit logging signals. The cable is installed on the drum of the logging vehicle. The drum rotates to control the cable to be raised and lowered in the oil well.

[0003] With the requirements for logging depth in recent years, the measured depth is getting deeper and deeper, the strength of the logging cable is also increasing, and the cable diameter is thick and heavy. The tensile force on the logging drum will also increase. The drum often deforms and cracks during logging, which poses a great safety hazard to the logging operation. In addition, the drum is expensive to manufacture, has a long manufacturing cycle, and has a huge replacement cost. Therefore, the instability of the drum has a great impact on the logging cycle, seriously affecting the smooth completion and safety of the logging task.

[0004] In the prior art, Chinese patent publication number CN216406800U discloses an ultra-deep well logging drum. However, because it only uses a cage-type frame reinforcement member to strengthen the inside of the drum, and does not provide a stable box beam design for the shaft head device and the drum body, the logging drum may be damaged during long-term operation. Summary of the invention

[0005] The purpose of the present invention is to provide a logging cable drum for deep wells, which solves the problem in the prior art that there is no stable design for the shaft head device and the drum body, and the drum is often deformed and cracked during logging.

[0006] The technical solution adopted by the present invention is a logging cable drum for deep wells, comprising a drum body, which is hollow in the middle and open at both ends. The openings at both ends of the drum body are inlaid with shaft head covers, and the surface of the shaft head cover is flush with the surface of the drum body. A shaft head is welded at the center of each shaft head cover, and hub devices are welded on the side surfaces at both ends of the drum body. The outer periphery of the hub device is connected to a hub sealing plate, which is clamped on the outer periphery of the drum body, and a plurality of circular support plates are arranged inside the drum body.

[0007] The present invention is also characterized in that:

[0008] The wheel hub device comprises a circular vertical plate, a first enclosure plate is welded to the outer wall of the vertical plate, a plurality of evenly distributed first rib plates are welded to the inner side of the first enclosure plate, a circular second enclosure plate is welded to one end of the first rib plate away from the first enclosure plate, a plurality of evenly distributed second rib plates are welded to the inner wall of the second enclosure plate, the first rib plates and the second rib plates are arranged correspondingly, and the outer wall of the first enclosure plate is connected to the wheel hub sealing plate;

[0009] A laser distance sensor and a pressure sensor are installed in sequence from top to bottom on a side wall of the vertical plate away from the first enclosure plate;

[0010] The outer surface of the drum body is paved with an anti-skid layer;

[0011] A number of evenly distributed weight-reducing holes are provided on the surface of each support plate.

[0012] The beneficial effects of the present invention are:

[0013] (1) The logging cable drum for deep wells of the present invention has a box beam type stabilizing structure and a support plate provided on the drum body, so that the drum body has a strong drum body strength and a high anti-deformation ability. During the logging operation, the operation can be stable and continuous for a long time, saving a lot of time, economic and labor costs;

[0014] (2) The present invention is designed with a laser distance sensor, a pressure sensor and an anti-skid layer, which enhances the safety of the drum rope winding and makes the logging operation safer and faster. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic structural diagram of a logging cable drum used in a deep well according to the present invention;

[0016] Figure 2 It is a disassembled diagram of the logging cable drum used in deep wells of the present invention;

[0017] Figure 3 It is a structural schematic diagram of the hub device in the logging cable drum of the present invention;

[0018] Figure 4 It is a cross-sectional view of the logging cable drum of the present invention.

[0019] In the figure, 1. drum body, 2. shaft head cover plate, 3. shaft head, 4. hub device, 401. vertical plate, 402. first enclosure plate, 403. first rib plate, 404. second enclosure plate, 405. second rib plate, 5. hub sealing plate, 6. support plate, 7. laser ranging sensor, 8. pressure sensor, 9. anti-skid layer, 10. weight reduction hole. DETAILED DESCRIPTION

[0020] The present invention is described in detail below with reference to the accompanying drawings and specific embodiments.

[0021] like Figure 1 , Figure 2As shown, the present invention provides a logging cable drum for deep wells, including a drum body 1, the drum body 1 is hollow in the middle and open at both ends, and shaft head covers 2 are inlaid at both ends of the openings of the drum body 1, and the surface of the shaft head cover 2 is flush with the surface of the drum body 1. A shaft head 3 is welded at the center of each shaft head cover 2, and the length of the shaft head 3 on one side is greater than that of the shaft head 3 on the other side, and is used to install a sprocket for power transmission. The shaft head 3, the shaft head cover 2 and the drum body 1 are welded in sequence to form a relatively stable box beam structure. The shaft head 3 mainly serves as the connection between the drum body and the bearing seat, and bears the weight of the entire drum and the cable, as well as the force when the cable is pulled;

[0022] The side surfaces at both ends of the drum body 1 are welded with a hub device 4, and the outer periphery of the hub device 4 is connected to a hub sealing plate 5, which is clamped on the outer periphery of the drum body 1. The hub device 4 includes a circular vertical plate 401, and the outer wall of the vertical plate 401 is welded with a first enclosure plate 402, and the inner side of the first enclosure plate 402 is welded with a plurality of evenly distributed first ribs 403, and a circular second enclosure plate 404 is welded to the end of the first rib plate 403 away from the first enclosure plate 402, and the inner wall of the second enclosure plate 404 is welded with a plurality of evenly distributed second ribs 405, the first rib plates 403 and the second rib plates 405 are arranged correspondingly, and the outer wall of the first enclosure plate 402 is connected to the hub sealing plate 5. The vertical plate 401 is the part of the hub device 4 used to bear the lateral force of the cable; the first enclosure plate 402 is used for winding brakes to slow down and stop the drum; the second enclosure plate 404 is used to strengthen the strength of the vertical plate 401 to prevent the vertical plate 401 from tipping over and deforming; the first rib plate 403 and the second rib plate 405 are welded to the first enclosure plate 402 and the second enclosure plate 404 to further strengthen the ability of the vertical plate 401 to resist tipping over and deformation. The second enclosure plate 404, the hub sealing plate 5 and the drum body 1 form a relatively stable box beam structure;

[0023] Several circular support plates 6 are arranged inside the drum body 1. Several evenly distributed weight-reducing holes 10 are opened on the surface of the support plates 6 to reduce the weight. The drum body 1 is used to wind the cable and mainly bear the radial pressure of the cable. The support plates 6 are welded inside the drum body 1 to strengthen the radial force of the drum body 1 and enhance the strength of the drum body.

[0024] A laser distance measuring sensor 7 and a pressure sensor 8 are installed in sequence from top to bottom on the side wall of the vertical plate 401 away from the first enclosure plate 402, which are used to sense the opening deformation of the roller and the pressure of the roller body. It can better detect the opening deformation of the roller and the pressure on the roller body during the operation of the roller, change the logging state at any time, and prevent damage to the roller due to violent manipulation during logging.

[0025] The outer surface of the drum body 1 is paved with an anti-skid layer 9 to facilitate cable winding and prevent squeezing and damage to the cable.

[0026] The shaft head 3 and the hub device 4 are made of high-strength steel, and the drum body 1 is made of high-strength non-magnetic steel.

[0027] The working principle of the present invention is as follows: the present invention welds the shaft head 3, the shaft head cover plate 2 and the drum body 1 in sequence to form a relatively stable box beam structure, and then installs the hub device 4, the second enclosure plate 404, the hub cover plate 5 and the drum body 1 to form a relatively stable box beam structure. The first enclosure plate 402 in the hub device 4 is used for winding brakes to slow down and stop the drum. The laser ranging sensor 7 and the pressure sensor 8 sense the deformation of the drum when opening the gear and the pressure of the drum body. The interface at the shaft head 3 of the present invention is convenient for installation, replacement and debugging. Compared with the drum without a welded box beam structure, the present invention has a more obvious advantage when bearing the same load. After the structural stress analysis of the drum and the original drum, it can be concluded that the stress it is subjected to is significantly less than the stress of the original drum.

[0028] Example 1

[0029] The present embodiment provides a logging cable drum for deep wells, comprising a drum body 1, which is hollow in the middle and open at both ends. The openings at both ends of the drum body 1 are inlaid with shaft head cover plates 2, and the surface of the shaft head cover plates 2 is flush with the surface of the drum body 1. A shaft head 3 is welded at the center position of each shaft head cover plate 2, and hub devices 4 are welded to the side surfaces at both ends of the drum body 1. The outer periphery of the hub device 4 is connected to a hub sealing plate 5, which is clamped on the outer periphery of the drum body 1, and a plurality of circular support plates 6 are arranged inside the drum body 1.

[0030] Example 2

[0031] On the basis of Example 1, the wheel hub device 4 includes a circular vertical plate 401, the outer wall of the vertical plate 401 is welded with a first enclosure plate 402, the inner side of the first enclosure plate 402 is welded with a plurality of evenly distributed first ribs 403, a circular second enclosure plate 404 is welded to the end of the first rib plate 403 away from the first enclosure plate 402, the inner wall of the second enclosure plate 404 is welded with a plurality of evenly distributed second ribs 405, the first ribs 403 and the second ribs 405 are arranged correspondingly, and the outer wall of the first enclosure plate 402 is connected to the wheel hub sealing plate 5.

[0032] Example 3

[0033] On the basis of Example 1, a laser distance sensor 7 and a pressure sensor 8 are sequentially installed from top to bottom on the side wall of the vertical plate 401 away from the first enclosure plate 402. An anti-slip layer 9 is laid on the outer surface of the drum body 1. A plurality of evenly distributed weight-reducing holes 10 are opened on the surface of each support plate 6.

Claims

1. A logging cable drum for deep wells, characterized in that: The invention comprises a roller body (1), wherein the roller body (1) is hollow in the middle and open at both ends, shaft head covers (2) are inlaid at the openings at both ends of the roller body (1), the surface of the shaft head covers (2) is flush with the surface of the roller body (1), a shaft head (3) is welded at the center of each shaft head cover (2), wheel hub devices (4) are welded to the side surfaces at both ends of the roller body (1), the outer periphery of the wheel hub device (4) is connected to a wheel hub sealing plate (5), the wheel hub sealing plate (5) is clamped to the outer periphery of the roller body (1), and a plurality of circular support plates (6) are arranged inside the roller body (1).

2. The logging cable drum for deep wells according to claim 1, characterized in that: The wheel hub device (4) comprises a circular vertical plate (401), the outer wall of the vertical plate (401) is welded with a first enclosure plate (402), the inner side of the first enclosure plate (402) is welded with a plurality of evenly distributed first ribs (403), the end of the first rib plate (403) away from the first enclosure plate (402) is also welded with a circular second enclosure plate (404), the inner wall of the second enclosure plate (404) is welded with a plurality of evenly distributed second ribs (405), the first ribs (403) and the second ribs (405) are arranged correspondingly, and the outer wall of the first enclosure plate (402) is connected to the wheel hub sealing plate (5).

3. The logging cable drum for deep wells according to claim 2, characterized in that: A laser distance sensor (7) and a pressure sensor (8) are installed in sequence from top to bottom on a side wall of the vertical plate (401) away from the first enclosure plate (402).

4. The logging cable drum for deep wells according to claim 1, characterized in that: The outer surface of the drum body (1) is paved with an anti-slip layer (9).

5. The logging cable drum for deep wells according to claim 1, characterized in that: A plurality of evenly distributed weight-reducing holes (10) are provided on the surface of each support plate (6).

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